Merge remote-tracking branch 'origin/master'

# Conflicts:
#	gradle.properties

build.gradle.kts

@@ -27,6 +27,7 @@ dependencies {
     implementation(project(path = ":eco-core:core-nms:v1_19_R1", configuration = "reobf"))
     implementation(project(path = ":eco-core:core-nms:v1_19_R2", configuration = "reobf"))
     implementation(project(path = ":eco-core:core-nms:v1_19_R3", configuration = "reobf"))
+    implementation(project(path = ":eco-core:core-nms:v1_20_R1", configuration = "reobf"))
 }
 
 allprojects {
@@ -82,6 +83,12 @@ allprojects {
 
         // UltraEconomy
         maven("https://repo.techscode.com/repository/maven-releases/")
+
+        // PlayerPoints
+        maven("https://repo.rosewooddev.io/repository/public/")
+
+        // Denizen
+        maven("https://maven.citizensnpcs.co/repo")
     }
 
     dependencies {

eco-api/src/main/java/com/willfp/eco/core/Eco.java

@@ -25,8 +25,8 @@ import com.willfp.eco.core.gui.menu.MenuType;
 import com.willfp.eco.core.gui.slot.SlotBuilder;
 import com.willfp.eco.core.gui.slot.functional.SlotProvider;
 import com.willfp.eco.core.items.TestableItem;
-import com.willfp.eco.core.math.MathContext;
 import com.willfp.eco.core.packet.Packet;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import com.willfp.eco.core.proxy.ProxyFactory;
 import com.willfp.eco.core.scheduling.Scheduler;
 import net.kyori.adventure.platform.bukkit.BukkitAudiences;
@@ -135,6 +135,14 @@ public interface Eco {
     @NotNull
     Logger createLogger(@NotNull EcoPlugin plugin);
 
+    /**
+     * Get NOOP logger.
+     *
+     * @return The logger.
+     */
+    @NotNull
+    Logger getNOOPLogger();
+
     /**
      * Create a PAPI integration.
      *
@@ -170,7 +178,7 @@ public interface Eco {
      * @return The PluginCommandBase implementation
      */
     @NotNull
-    PluginCommandBase createPluginCommand(@NotNull CommandBase parentDelegate,
+    PluginCommandBase createPluginCommand(@NotNull PluginCommandBase parentDelegate,
                                           @NotNull EcoPlugin plugin,
                                           @NotNull String name,
                                           @NotNull String permission,
@@ -393,15 +401,6 @@ public interface Eco {
     @NotNull
     ServerProfile getServerProfile();
 
-    /**
-     * Unload a player profile from memory.
-     * <p>
-     * This will not save the profile first.
-     *
-     * @param uuid The uuid.
-     */
-    void unloadPlayerProfile(@NotNull UUID uuid);
-
     /**
      * Create dummy entity - never spawned, exists purely in code.
      *
@@ -528,10 +527,11 @@ public interface Eco {
      *
      * @param expression The expression.
      * @param context    The context.
-     * @return The value of the expression, or zero if invalid.
+     * @return The value of the expression, or null if invalid.
      */
-    double evaluate(@NotNull String expression,
-                    @NotNull MathContext context);
+    @Nullable
+    Double evaluate(@NotNull String expression,
+                    @NotNull PlaceholderContext context);
 
     /**
      * Get the menu a player currently has open.
@@ -563,6 +563,30 @@ public interface Eco {
     void sendPacket(@NotNull Player player,
                     @NotNull Packet packet);
 
+    /**
+     * Translate placeholders in a string.
+     *
+     * @param text    The text.
+     * @param context The context.
+     * @return The translated text.
+     */
+    @NotNull
+    String translatePlaceholders(@NotNull String text,
+                                 @NotNull PlaceholderContext context);
+
+    /**
+     * Get the value of a placeholder.
+     *
+     * @param plugin  The plugin that owns the placeholder.
+     * @param args    The placeholder arguments.
+     * @param context The context.
+     * @return The value, or null if invalid.
+     */
+    @Nullable
+    String getPlaceholderValue(@Nullable EcoPlugin plugin,
+                               @NotNull String args,
+                               @NotNull PlaceholderContext context);
+
     /**
      * Get the instance of eco; the bridge between the api frontend and the implementation backend.
      *

eco-api/src/main/java/com/willfp/eco/core/EcoPlugin.java

@@ -33,6 +33,7 @@ import org.bukkit.plugin.java.JavaPlugin;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.io.File;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
@@ -125,7 +126,7 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
     /**
      * The logger for the plugin.
      */
-    private final Logger logger;
+    private Logger logger;
 
     /**
      * If the server is running an outdated version of the plugin.
@@ -163,6 +164,11 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
      */
     private final ListMap<LifecyclePosition, Runnable> afterLoad = new ListMap<>();
 
+    /**
+     * The tasks to run on task creation.
+     */
+    private final ListMap<LifecyclePosition, Runnable> createTasks = new ListMap<>();
+
     /**
      * Create a new plugin.
      * <p>
@@ -366,7 +372,6 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
     public final void onEnable() {
         super.onEnable();
 
-        this.getLogger().info("");
         this.getLogger().info("Loading " + this.getColor() + this.getName());
 
         if (this.getResourceId() != 0 && !Eco.get().getEcoPlugin().getConfigYml().getBool("no-update-checker")) {
@@ -406,7 +411,9 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
 
         this.loadedIntegrations.removeIf(pl -> pl.equalsIgnoreCase(this.getName()));
 
-        this.getLogger().info("Loaded integrations: " + String.join(", ", this.getLoadedIntegrations()));
+        if (!this.getLoadedIntegrations().isEmpty()) {
+            this.getLogger().info("Loaded integrations: " + String.join(", ", this.getLoadedIntegrations()));
+        }
 
         Prerequisite.update();
 
@@ -423,22 +430,35 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
 
         this.loadPluginCommands().forEach(PluginCommand::register);
 
-        this.getScheduler().runLater(this::afterLoad, 1);
+        // Run preliminary reload to resolve load order issues
+        this.getScheduler().runLater(() -> {
+            Logger before = this.getLogger();
+            // Temporary silence logger.
+            this.logger = Eco.get().getNOOPLogger();
+
+            this.reload(false);
+
+            this.logger = before;
+        }, 1);
+
+        this.getScheduler().runLater(this::afterLoad, 2);
 
         if (this.isSupportingExtensions()) {
             this.getExtensionLoader().loadExtensions();
 
-            if (this.getExtensionLoader().getLoadedExtensions().isEmpty()) {
-                this.getLogger().info("&cNo extensions found");
-            } else {
-                this.getLogger().info("Extensions Loaded:");
-                this.getExtensionLoader().getLoadedExtensions().forEach(extension -> this.getLogger().info("- " + extension.getName() + " v" + extension.getVersion()));
+            if (!this.getExtensionLoader().getLoadedExtensions().isEmpty()) {
+                List<String> loadedExtensions = this.getExtensionLoader().getLoadedExtensions().stream().map(
+                        extension -> extension.getName() + " v" + extension.getVersion()
+                ).toList();
+
+                this.getLogger().info(
+                        "Loaded extensions: " +
+                                String.join(", ", loadedExtensions)
+                );
             }
         }
 
         this.handleLifecycle(this.onEnable, this::handleEnable);
-
-        this.getLogger().info("");
     }
 
     /**
@@ -597,14 +617,30 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
      * Reload the plugin.
      */
     public final void reload() {
+        this.reload(true);
+    }
+
+    /**
+     * Reload the plugin.
+     *
+     * @param cancelTasks If tasks should be cancelled.
+     */
+    public final void reload(final boolean cancelTasks) {
         this.getConfigHandler().updateConfigs();
 
-        this.getScheduler().cancelAll();
+        if (cancelTasks) {
+            this.getScheduler().cancelAll();
+        }
+
         this.getConfigHandler().callUpdate();
         this.getConfigHandler().callUpdate(); // Call twice to fix issues
 
         this.handleLifecycle(this.onReload, this::handleReload);
 
+        if (cancelTasks) {
+            this.handleLifecycle(this.createTasks, this::createTasks);
+        }
+
         for (Extension extension : this.extensionLoader.getLoadedExtensions()) {
             extension.handleReload();
         }
@@ -718,6 +754,15 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
 
     }
 
+    /**
+     * The plugin-specific code to create tasks.
+     * <p>
+     * Override when needed.
+     */
+    protected void createTasks() {
+
+    }
+
     /**
      * The plugin-specific code to be executed after the server is up.
      * <p>
@@ -1082,7 +1127,7 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
      *
      * @return The config handler.
      */
-    public ConfigHandler getConfigHandler() {
+    public @NotNull ConfigHandler getConfigHandler() {
         return this.configHandler;
     }
 
@@ -1146,9 +1191,24 @@ public abstract class EcoPlugin extends JavaPlugin implements PluginLike, Regist
         return this.getMetadataValueFactory().create(value);
     }
 
+    /**
+     * Get if all {@link com.willfp.eco.core.data.keys.PersistentDataKey}'s for this
+     * plugin should be saved locally (via data.yml.) even if eco is using a database.
+     *
+     * @return If using local storage.
+     */
+    public boolean isUsingLocalStorage() {
+        return this.configYml.isUsingLocalStorage();
+    }
+
     @Override
     @NotNull
     public final String getID() {
         return Registry.tryFitPattern(this.getName());
     }
+
+    @Override
+    public @NotNull File getFile() {
+        return super.getFile();
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/PluginLike.java

@@ -1,6 +1,8 @@
 package com.willfp.eco.core;
 
 import com.willfp.eco.core.config.updating.ConfigHandler;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
 import java.util.logging.Logger;
@@ -13,12 +15,13 @@ import java.util.logging.Logger;
  */
 public interface PluginLike {
     /**
-     * Get the data folder of the object.
+     * Get the data folder.
      * <p>
      * Returns the plugin data folder for a plugin, or the extension's parent plugin's folder
      *
      * @return The data folder.
      */
+    @NotNull
     File getDataFolder();
 
     /**
@@ -26,6 +29,7 @@ public interface PluginLike {
      *
      * @return The config handler.
      */
+    @NotNull
     ConfigHandler getConfigHandler();
 
     /**
@@ -33,5 +37,16 @@ public interface PluginLike {
      *
      * @return The logger.
      */
+    @NotNull
     Logger getLogger();
+
+    /**
+     * Get the actual file.
+     *
+     * @return The file, i.e. the jar file.
+     */
+    @Nullable
+    default File getFile() {
+        return null;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/Prerequisite.java

@@ -37,11 +37,19 @@ public class Prerequisite {
             "Requires server to have ProtocolLib"
     );
 
+    /**
+     * Requires the server to be running 1.20.
+     */
+    public static final Prerequisite HAS_1_20 = new Prerequisite(
+            () -> ProxyConstants.NMS_VERSION.contains("20"),
+            "Requires server to be running 1.20+"
+    );
+
     /**
      * Requires the server to be running 1.19.4.
      */
     public static final Prerequisite HAS_1_19_4 = new Prerequisite(
-            () -> ProxyConstants.NMS_VERSION.contains("19_R3"),
+            () -> ProxyConstants.NMS_VERSION.contains("19_R3") || HAS_1_20.isMet(),
             "Requires server to be running 1.19.4+"
     );
 
@@ -49,7 +57,7 @@ public class Prerequisite {
      * Requires the server to be running 1.19.
      */
     public static final Prerequisite HAS_1_19 = new Prerequisite(
-            () -> ProxyConstants.NMS_VERSION.contains("19"),
+            () -> ProxyConstants.NMS_VERSION.contains("19") || HAS_1_20.isMet(),
             "Requires server to be running 1.19+"
     );
 

eco-api/src/main/java/com/willfp/eco/core/config/base/ConfigYml.java

@@ -9,6 +9,11 @@ import org.jetbrains.annotations.NotNull;
  * Default plugin config.yml.
  */
 public class ConfigYml extends BaseConfig {
+    /**
+     * The use local storage key.
+     */
+    public static final String KEY_USES_LOCAL_STORAGE = "use-local-storage";
+
     /**
      * Config.yml.
      *
@@ -52,4 +57,13 @@ public class ConfigYml extends BaseConfig {
                      final boolean removeUnused) {
         super(name, plugin, removeUnused, ConfigType.YAML);
     }
+
+    /**
+     * Get if the plugin is using local storage.
+     *
+     * @return The prefix.
+     */
+    public boolean isUsingLocalStorage() {
+        return this.getBool(KEY_USES_LOCAL_STORAGE);
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/config/interfaces/Config.java

@@ -6,6 +6,7 @@ import com.willfp.eco.core.config.Configs;
 import com.willfp.eco.core.placeholder.AdditionalPlayer;
 import com.willfp.eco.core.placeholder.InjectablePlaceholder;
 import com.willfp.eco.core.placeholder.PlaceholderInjectable;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import com.willfp.eco.util.NumberUtils;
 import com.willfp.eco.util.StringUtils;
 import org.bukkit.configuration.ConfigurationSection;
@@ -134,7 +135,7 @@ public interface Config extends Cloneable, PlaceholderInjectable {
      * @return The computed value, or 0 if not found or invalid.
      */
     default int getIntFromExpression(@NotNull String path) {
-        return getIntFromExpression(path, null);
+        return getIntFromExpression(path, PlaceholderContext.of(this));
     }
 
     /**
@@ -163,6 +164,18 @@ public interface Config extends Cloneable, PlaceholderInjectable {
         return Double.valueOf(getDoubleFromExpression(path, player, additionalPlayers)).intValue();
     }
 
+    /**
+     * Get a decimal value via a mathematical expression.
+     *
+     * @param path    The key to fetch the value from.
+     * @param context The placeholder context.
+     * @return The computed value, or 0 if not found or invalid.
+     */
+    default int getIntFromExpression(@NotNull String path,
+                                     @NotNull PlaceholderContext context) {
+        return Double.valueOf(getDoubleFromExpression(path, context)).intValue();
+    }
+
 
     /**
      * Get an integer from config.
@@ -256,6 +269,22 @@ public interface Config extends Cloneable, PlaceholderInjectable {
         return getString(path, true, option);
     }
 
+    /**
+     * Get a formatted string from config.
+     *
+     * @param path    The key to fetch the value from.
+     * @param context The placeholder context.
+     * @return The found value, or an empty string if not found.
+     */
+    @NotNull
+    default String getFormattedString(@NotNull String path,
+                                      @NotNull PlaceholderContext context) {
+        return Objects.requireNonNullElse(
+                getFormattedStringOrNull(path, context),
+                ""
+        );
+    }
+
     /**
      * Get a string from config.
      * <p>
@@ -288,7 +317,7 @@ public interface Config extends Cloneable, PlaceholderInjectable {
      * Get a formatted string from config.
      *
      * @param path The key to fetch the value from.
-     * @return The found value, or an empty string if not found.
+     * @return The found value, or null if not found.
      */
     @Nullable
     default String getFormattedStringOrNull(@NotNull String path) {
@@ -300,7 +329,7 @@ public interface Config extends Cloneable, PlaceholderInjectable {
      *
      * @param path   The key to fetch the value from.
      * @param option The format option.
-     * @return The found value, or an empty string if not found.
+     * @return The found value, or null if not found.
      */
     @Nullable
     default String getFormattedStringOrNull(@NotNull String path,
@@ -308,6 +337,25 @@ public interface Config extends Cloneable, PlaceholderInjectable {
         return getStringOrNull(path, true, option);
     }
 
+    /**
+     * Get a formatted string from config.
+     *
+     * @param path    The key to fetch the value from.
+     * @param context The placeholder context.
+     * @return The found value, or null if not found.
+     */
+    @Nullable
+    default String getFormattedStringOrNull(@NotNull String path,
+                                            @NotNull PlaceholderContext context) {
+        String nullable = getStringOrNull(path);
+
+        if (nullable == null) {
+            return null;
+        }
+
+        return StringUtils.format(nullable, context.withInjectableContext(this));
+    }
+
     /**
      * Get a string from config.
      * <p>
@@ -362,6 +410,24 @@ public interface Config extends Cloneable, PlaceholderInjectable {
         return getStrings(path, true, option);
     }
 
+    /**
+     * Get a list of strings from config.
+     * <p>
+     * Formatted.
+     *
+     * @param path    The key to fetch the value from.
+     * @param context The placeholder context.
+     * @return The found value, or a blank {@link java.util.ArrayList} if not found.
+     */
+    @NotNull
+    default List<String> getFormattedStrings(@NotNull String path,
+                                             @NotNull PlaceholderContext context) {
+        return Objects.requireNonNullElse(
+                getFormattedStringsOrNull(path, context),
+                new ArrayList<>()
+        );
+    }
+
     /**
      * Get a list of strings from config.
      * <p>
@@ -418,6 +484,30 @@ public interface Config extends Cloneable, PlaceholderInjectable {
         return getStringsOrNull(path, true, option);
     }
 
+    /**
+     * Get a list of strings from config.
+     * <p>
+     * Formatted.
+     *
+     * @param path    The key to fetch the value from.
+     * @param context The placeholder context.
+     * @return The found value, or null if not found.
+     */
+    @Nullable
+    default List<String> getFormattedStringsOrNull(@NotNull String path,
+                                                   @NotNull PlaceholderContext context) {
+        List<String> nullable = getStringsOrNull(path);
+
+        if (nullable == null) {
+            return null;
+        }
+
+        return StringUtils.formatList(
+                nullable,
+                context.withInjectableContext(this)
+        );
+    }
+
     /**
      * Get a list of strings from config.
      * <p>
@@ -463,7 +553,7 @@ public interface Config extends Cloneable, PlaceholderInjectable {
      * @return The computed value, or 0 if not found or invalid.
      */
     default double getDoubleFromExpression(@NotNull String path) {
-        return getDoubleFromExpression(path, null);
+        return getDoubleFromExpression(path, PlaceholderContext.of(this));
     }
 
     /**
@@ -475,21 +565,38 @@ public interface Config extends Cloneable, PlaceholderInjectable {
      */
     default double getDoubleFromExpression(@NotNull String path,
                                            @Nullable Player player) {
-        return NumberUtils.evaluateExpression(this.getString(path), player, this);
+        return getDoubleFromExpression(path, player, Collections.emptyList());
     }
 
     /**
      * Get a decimal value via a mathematical expression.
      *
-     * @param path   The key to fetch the value from.
-     * @param player The player to evaluate placeholders with respect to.
+     * @param path              The key to fetch the value from.
+     * @param player            The player to evaluate placeholders with respect to.
      * @param additionalPlayers The additional players to evaluate placeholders with respect to.
      * @return The computed value, or 0 if not found or invalid.
      */
     default double getDoubleFromExpression(@NotNull String path,
                                            @Nullable Player player,
                                            @NotNull Collection<AdditionalPlayer> additionalPlayers) {
-        return NumberUtils.evaluateExpression(this.getString(path), player, this, additionalPlayers);
+        return getDoubleFromExpression(path, new PlaceholderContext(
+                player,
+                null,
+                this,
+                additionalPlayers
+        ));
+    }
+
+    /**
+     * Get a decimal value via a mathematical expression.
+     *
+     * @param path    The key to fetch the value from.
+     * @param context The placeholder context.
+     * @return The computed value, or 0 if not found or invalid.
+     */
+    default double getDoubleFromExpression(@NotNull String path,
+                                           @NotNull PlaceholderContext context) {
+        return NumberUtils.evaluateExpression(this.getString(path), context.withInjectableContext(this));
     }
 
     /**

eco-api/src/main/java/com/willfp/eco/core/data/ServerProfile.java

@@ -9,6 +9,22 @@ import org.jetbrains.annotations.NotNull;
  * Profiles save automatically, so there is no need to save after changes.
  */
 public interface ServerProfile extends Profile {
+    /**
+     * Get the server ID.
+     *
+     * @return The server ID.
+     */
+    @NotNull
+    String getServerID();
+
+    /**
+     * Get the local server ID.
+     *
+     * @return The local server ID.
+     */
+    @NotNull
+    String getLocalServerID();
+
     /**
      * Load the server profile.
      *

eco-api/src/main/java/com/willfp/eco/core/data/keys/PersistentDataKeyType.java

@@ -4,6 +4,7 @@ import com.willfp.eco.core.config.interfaces.Config;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
@@ -49,6 +50,11 @@ public final class PersistentDataKeyType<T> {
      */
     public static final PersistentDataKeyType<Config> CONFIG = new PersistentDataKeyType<>("CONFIG");
 
+    /**
+     * Big Decimal.
+     */
+    public static final PersistentDataKeyType<BigDecimal> BIG_DECIMAL = new PersistentDataKeyType<>("BIG_DECIMAL");
+
     /**
      * The name of the key type.
      */

eco-api/src/main/java/com/willfp/eco/core/extensions/Extension.java

@@ -135,20 +135,26 @@ public abstract class Extension implements PluginLike {
     }
 
     @Override
-    public File getDataFolder() {
+    public @NotNull File getDataFolder() {
         return this.plugin.getDataFolder();
     }
 
     @Override
-    public ConfigHandler getConfigHandler() {
+    public @NotNull ConfigHandler getConfigHandler() {
         return this.plugin.getConfigHandler();
     }
 
     @Override
-    public Logger getLogger() {
+    public @NotNull Logger getLogger() {
         return this.plugin.getLogger();
     }
 
+    @Override
+    public @NotNull File getFile() {
+        Validate.notNull(metadata, "Metadata cannot be null!");
+        return this.metadata.file();
+    }
+
     /**
      * Get the plugin for the extension.
      *

eco-api/src/main/java/com/willfp/eco/core/extensions/ExtensionLoadException.java

@@ -0,0 +1,17 @@
+package com.willfp.eco.core.extensions;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Generic exception in extension loading.
+ */
+public class ExtensionLoadException extends RuntimeException {
+    /**
+     * Create a new ExtensionLoadException.
+     *
+     * @param errorMessage The error message to show.
+     */
+    public ExtensionLoadException(@NotNull final String errorMessage) {
+        super(errorMessage);
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/extensions/ExtensionMetadata.java

@@ -1,7 +1,10 @@
 package com.willfp.eco.core.extensions;
 
+import com.willfp.eco.core.version.Version;
 import org.jetbrains.annotations.NotNull;
 
+import java.io.File;
+
 /**
  * The extension's metadata.
  * <p>
@@ -13,6 +16,23 @@ import org.jetbrains.annotations.NotNull;
  */
 public record ExtensionMetadata(@NotNull String version,
                                 @NotNull String name,
-                                @NotNull String author) {
-
+                                @NotNull String author,
+                                @NotNull File file,
+                                @NotNull Version minimumPluginVersion) {
+    /**
+     * Legacy constructor.
+     *
+     * @param version The extension version.
+     * @param name    The extension name.
+     * @param author  The extension's author.
+     * @deprecated Use {@link ExtensionMetadata#ExtensionMetadata(String, String, String, File, Version)} instead.
+     */
+    @SuppressWarnings("ConstantConditions")
+    @Deprecated(since = "6.57.0", forRemoval = true)
+    public ExtensionMetadata(@NotNull String version,
+                             @NotNull String name,
+                             @NotNull String author) {
+        this(version, name, author, null, null);
+        throw new UnsupportedOperationException("Legacy constructor is not supported.");
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/extensions/MalformedExtensionException.java

@@ -7,7 +7,7 @@ import org.jetbrains.annotations.NotNull;
  * Missing or invalid extension.yml.
  * Invalid filetype.
  */
-public class MalformedExtensionException extends RuntimeException {
+public class MalformedExtensionException extends ExtensionLoadException {
     /**
      * Create a new MalformedExtensionException.
      *

eco-api/src/main/java/com/willfp/eco/core/gui/menu/MenuBuilder.java

@@ -142,6 +142,26 @@ public interface MenuBuilder extends PageBuilder {
         return this.onRender((player, menu) -> menu.setState(player, Page.MAX_PAGE_KEY, pages.apply(player)));
     }
 
+    /**
+     * Set the default page.
+     *
+     * @param page The page.
+     * @return The builder.
+     */
+    default MenuBuilder defaultPage(final int page) {
+        return this.maxPages(player -> page);
+    }
+
+    /**
+     * Set the default page dynamically for a player.
+     *
+     * @param page The default page.
+     * @return The builder.
+     */
+    default MenuBuilder defaultPage(@NotNull final Function<Player, Integer> page) {
+        return this.onOpen((player, menu) -> menu.setState(player, Page.PAGE_KEY, page.apply(player)));
+    }
+
     /**
      * Add a menu close handler.
      *

eco-api/src/main/java/com/willfp/eco/core/gui/slot/CustomSlot.java

@@ -76,6 +76,15 @@ public abstract class CustomSlot implements Slot {
         return delegate;
     }
 
+    @Override
+    public boolean shouldRenderOnClick() {
+        if (delegate == null) {
+            throw new IllegalStateException("Custom Slot was not initialized!");
+        }
+
+        return delegate.shouldRenderOnClick();
+    }
+
     @Override
     public final int getRows() {
         return Slot.super.getRows();

eco-api/src/main/java/com/willfp/eco/core/gui/slot/Slot.java

@@ -92,6 +92,15 @@ public interface Slot extends GUIComponent {
         return false;
     }
 
+    /**
+     * If the slot should re-render the menu if clicked.
+     *
+     * @return If the slot should re-render.
+     */
+    default boolean shouldRenderOnClick() {
+        return true;
+    }
+
     @Override
     default int getRows() {
         return 1;

eco-api/src/main/java/com/willfp/eco/core/integrations/IntegrationRegistry.java

@@ -17,6 +17,13 @@ import java.util.function.Supplier;
  * @param <T> The type of integration.
  */
 public class IntegrationRegistry<T extends Integration> extends Registry<T> {
+    /**
+     * Create a new integration registry.
+     */
+    public IntegrationRegistry() {
+        super();
+    }
+
     @Override
     public @NotNull T register(@NotNull final T element) {
         return executeSafely(() -> super.register(element), element);
@@ -114,7 +121,7 @@ public class IntegrationRegistry<T extends Integration> extends Registry<T> {
             Eco.get().getEcoPlugin().getLogger().warning("Integration for " + integration.getPluginName() + " threw an exception!");
             Eco.get().getEcoPlugin().getLogger().warning("The integration will be disabled.");
             e.printStackTrace();
-            this.remove(integration.getPluginName());
+            this.remove(integration);
             return defaultValue;
         }
     }

eco-api/src/main/java/com/willfp/eco/core/integrations/placeholder/PlaceholderIntegration.java

@@ -9,7 +9,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 /**
- * Wrapper class for placeholder integrations.
+ * Wrapper class for arguments integrations.
  */
 public interface PlaceholderIntegration extends Integration {
     /**

eco-api/src/main/java/com/willfp/eco/core/integrations/placeholder/PlaceholderManager.java

@@ -1,21 +1,15 @@
 package com.willfp.eco.core.integrations.placeholder;
 
-import com.github.benmanes.caffeine.cache.Cache;
-import com.github.benmanes.caffeine.cache.Caffeine;
-import com.github.benmanes.caffeine.cache.LoadingCache;
+import com.google.common.collect.ImmutableSet;
+import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.map.DefaultMap;
 import com.willfp.eco.core.placeholder.AdditionalPlayer;
-import com.willfp.eco.core.placeholder.DynamicPlaceholder;
 import com.willfp.eco.core.placeholder.InjectablePlaceholder;
 import com.willfp.eco.core.placeholder.Placeholder;
 import com.willfp.eco.core.placeholder.PlaceholderInjectable;
-import com.willfp.eco.core.placeholder.PlayerDynamicPlaceholder;
-import com.willfp.eco.core.placeholder.PlayerPlaceholder;
-import com.willfp.eco.core.placeholder.PlayerStaticPlaceholder;
-import com.willfp.eco.core.placeholder.PlayerlessPlaceholder;
-import com.willfp.eco.core.placeholder.StaticPlaceholder;
-import com.willfp.eco.util.StringUtils;
-import org.apache.commons.lang.Validate;
+import com.willfp.eco.core.placeholder.RegistrablePlaceholder;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -23,58 +17,34 @@ import org.jetbrains.annotations.Nullable;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
-import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
-import java.util.Map;
-import java.util.Optional;
+import java.util.Objects;
 import java.util.Set;
-import java.util.concurrent.TimeUnit;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 /**
- * Class to handle placeholder integrations.
+ * Class to handle arguments integrations.
  */
 public final class PlaceholderManager {
     /**
      * All registered placeholders.
      */
-    private static final Map<EcoPlugin, Map<Pattern, Placeholder>> REGISTERED_PLACEHOLDERS = new HashMap<>();
+    private static final DefaultMap<EcoPlugin, Set<Placeholder>> REGISTERED_PLACEHOLDERS = new DefaultMap<>(HashSet::new);
 
     /**
-     * All registered placeholder integrations.
+     * All registered arguments integrations.
      */
     private static final Set<PlaceholderIntegration> REGISTERED_INTEGRATIONS = new HashSet<>();
 
-    /**
-     * Placeholder Lookup Cache.
-     */
-    private static final Cache<PlaceholderLookup, Optional<Placeholder>> PLACEHOLDER_LOOKUP_CACHE = Caffeine.newBuilder()
-            .expireAfterWrite(1, TimeUnit.SECONDS)
-            .build();
-
-    /**
-     * Placeholder Cache.
-     */
-    private static final LoadingCache<EntryWithPlayer, String> PLACEHOLDER_CACHE = Caffeine.newBuilder()
-            .expireAfterWrite(50, TimeUnit.MILLISECONDS)
-            .build(key -> key.entry.getValue(key.player));
-
-    /**
-     * Dynamic Placeholder Cache.
-     */
-    private static final LoadingCache<DynamicEntryWithPlayer, String> DYNAMIC_PLACEHOLDER_CACHE = Caffeine.newBuilder()
-            .expireAfterWrite(50, TimeUnit.MILLISECONDS)
-            .build(key -> key.entry.getValue(key.args, key.player));
-
     /**
      * The default PlaceholderAPI pattern; brought in for compatibility.
      */
     private static final Pattern PATTERN = Pattern.compile("%([^% ]+)%");
 
     /**
-     * Empty injectable object.
+     * Empty injectableContext object.
      */
     public static final PlaceholderInjectable EMPTY_INJECTABLE = new PlaceholderInjectable() {
         @Override
@@ -105,97 +75,69 @@ public final class PlaceholderManager {
     }
 
     /**
-     * Register a placeholder.
+     * Register a arguments.
      *
-     * @param placeholder The placeholder to register.
+     * @param placeholder The arguments to register.
+     * @deprecated Use {@link #registerPlaceholder(RegistrablePlaceholder)} instead.
      */
+    @Deprecated(since = "6.56.0", forRemoval = true)
     public static void registerPlaceholder(@NotNull final Placeholder placeholder) {
-        if (placeholder instanceof StaticPlaceholder || placeholder instanceof PlayerStaticPlaceholder) {
-            throw new IllegalArgumentException("Static placeholders cannot be registered!");
+        if (!(placeholder instanceof RegistrablePlaceholder)) {
+            throw new IllegalArgumentException("Placeholder must be RegistrablePlaceholder!");
         }
 
-        Map<Pattern, Placeholder> pluginPlaceholders = REGISTERED_PLACEHOLDERS
-                .getOrDefault(placeholder.getPlugin(), new HashMap<>());
-
-        pluginPlaceholders.put(placeholder.getPattern(), placeholder);
-
-        REGISTERED_PLACEHOLDERS.put(placeholder.getPlugin(), pluginPlaceholders);
+        registerPlaceholder((RegistrablePlaceholder) placeholder);
     }
 
     /**
-     * Get the result of a placeholder with respect to a player.
+     * Register a arguments.
      *
-     * @param player     The player to get the result from.
-     * @param identifier The placeholder identifier.
-     * @return The value of the placeholder.
-     * @deprecated Specify a plugin to get the result from.
+     * @param placeholder The arguments to register.
      */
-    @Deprecated(since = "6.52.2", forRemoval = true)
-    @SuppressWarnings("unused")
-    public static String getResult(@Nullable final Player player,
-                                   @NotNull final String identifier) {
-        throw new UnsupportedOperationException("Please specify a plugin to get the result from!");
+    public static void registerPlaceholder(@NotNull final RegistrablePlaceholder placeholder) {
+        // Storing as immutable set leads to slower times to register placeholders, but much
+        // faster times to access registrations.
+        Set<Placeholder> pluginPlaceholders = new HashSet<>(REGISTERED_PLACEHOLDERS.get(placeholder.getPlugin()));
+        pluginPlaceholders.removeIf(p -> p.getPattern().equals(placeholder.getPattern()));
+        pluginPlaceholders.add(placeholder);
+        REGISTERED_PLACEHOLDERS.put(placeholder.getPlugin(), ImmutableSet.copyOf(pluginPlaceholders));
     }
 
     /**
      * Get the result of a placeholder with respect to a player.
      *
      * @param player     The player to get the result from.
-     * @param identifier The placeholder identifier.
-     * @param plugin     The plugin for the placeholder.
-     * @return The value of the placeholder.
+     * @param identifier The placeholder args.
+     * @param plugin     The plugin for the arguments.
+     * @return The value of the arguments.
      */
     @NotNull
     public static String getResult(@Nullable final Player player,
                                    @NotNull final String identifier,
-                                   @NotNull final EcoPlugin plugin) {
-        Validate.notNull(plugin, "Plugin cannot be null!");
+                                   @Nullable final EcoPlugin plugin) {
+        return Objects.requireNonNullElse(
+                getResult(
+                        plugin,
+                        identifier,
+                        new PlaceholderContext(player)
+                ),
+                ""
+        );
+    }
 
-        // This is really janky, and it sucks, but it works so?
-        // Compensating for regex being slow so that's why we get it.
-        Placeholder placeholder = PLACEHOLDER_LOOKUP_CACHE.get(
-                new PlaceholderLookup(identifier, plugin),
-                (it) -> {
-                    // I hate the streams API.
-                    return REGISTERED_PLACEHOLDERS
-                            .getOrDefault(plugin, new HashMap<>())
-                            .entrySet()
-                            .stream().filter(entry -> entry.getKey().matcher(identifier).matches())
-                            .map(Map.Entry::getValue)
-                            .findFirst();
-                }
-        ).orElse(null);
-
-        if (placeholder == null) {
-            return "";
-        }
-
-        /*
-        This code here is *really* not very good. It's mega externalized logic hacked
-        together and made worse by the addition of dynamic placeholders. But it works,
-        and it means I don't have to rewrite the whole placeholder system. So it's
-        good enough for me.
-         */
-
-        if (placeholder instanceof PlayerPlaceholder playerPlaceholder) {
-            if (player == null) {
-                return "";
-            } else {
-                return PLACEHOLDER_CACHE.get(new EntryWithPlayer(playerPlaceholder, player));
-            }
-        } else if (placeholder instanceof PlayerlessPlaceholder playerlessPlaceholder) {
-            return playerlessPlaceholder.getValue();
-        } else if (placeholder instanceof PlayerDynamicPlaceholder playerDynamicPlaceholder) {
-            if (player == null) {
-                return "";
-            } else {
-                return DYNAMIC_PLACEHOLDER_CACHE.get(new DynamicEntryWithPlayer(playerDynamicPlaceholder, identifier, player));
-            }
-        } else if (placeholder instanceof DynamicPlaceholder dynamicPlaceholder) {
-            return dynamicPlaceholder.getValue(identifier);
-        } else {
-            return "";
-        }
+    /**
+     * Get the result of a placeholder given a plugin and arguments.
+     *
+     * @param plugin  The plugin for the placeholder.
+     * @param args    The arguments.
+     * @param context The context.
+     * @return The value of the arguments.
+     */
+    @Nullable
+    public static String getResult(@Nullable final EcoPlugin plugin,
+                                   @NotNull final String args,
+                                   @NotNull final PlaceholderContext context) {
+        return Eco.get().getPlaceholderValue(plugin, args, context);
     }
 
     /**
@@ -204,7 +146,10 @@ public final class PlaceholderManager {
      * @param text   The text that may contain placeholders to translate.
      * @param player The player to translate the placeholders with respect to.
      * @return The text, translated.
+     * @deprecated Use {@link #translatePlaceholders(String, PlaceholderContext)} instead.
      */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
     public static String translatePlaceholders(@NotNull final String text,
                                                @Nullable final Player player) {
         return translatePlaceholders(text, player, EMPTY_INJECTABLE);
@@ -215,9 +160,12 @@ public final class PlaceholderManager {
      *
      * @param text    The text that may contain placeholders to translate.
      * @param player  The player to translate the placeholders with respect to.
-     * @param context The injectable context.
+     * @param context The injectableContext parseContext.
      * @return The text, translated.
+     * @deprecated Use {@link #translatePlaceholders(String, PlaceholderContext)} instead.
      */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
     public static String translatePlaceholders(@NotNull final String text,
                                                @Nullable final Player player,
                                                @NotNull final PlaceholderInjectable context) {
@@ -229,84 +177,50 @@ public final class PlaceholderManager {
      *
      * @param text              The text that may contain placeholders to translate.
      * @param player            The player to translate the placeholders with respect to.
-     * @param context           The injectable context.
+     * @param context           The injectableContext parseContext.
      * @param additionalPlayers Additional players to translate placeholders for.
      * @return The text, translated.
+     * @deprecated Use {@link #translatePlaceholders(String, PlaceholderContext)} instead.
      */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
     public static String translatePlaceholders(@NotNull final String text,
                                                @Nullable final Player player,
                                                @NotNull final PlaceholderInjectable context,
                                                @NotNull final Collection<AdditionalPlayer> additionalPlayers) {
-        String processed = text;
+        return translatePlaceholders(
+                text,
+                new PlaceholderContext(
+                        player,
+                        null,
+                        context,
+                        additionalPlayers
+                )
+        );
+    }
 
-        /*
+    /**
+     * Translate all placeholders without a placeholder context.
+     *
+     * @param text The text that may contain placeholders to translate.
+     * @return The text, translated.
+     */
+    @NotNull
+    public static String translatePlaceholders(@NotNull final String text) {
+        return Eco.get().translatePlaceholders(text, PlaceholderContext.EMPTY);
+    }
 
-        Why am I doing statics at the start, but player statics at the end?
-
-        Additional players let you use something like victim as a player to parse in relation to,
-        for example doing %victim_player_health%, which would parse the health of the victim.
-
-        However, something like libreforge will also inject %victim_max_health%, which is unrelated
-        to additional players, and instead holds a constant value. So, eco saw this, smartly thought
-        "ah, it's an additional player, let's parse it", and then tried to parse %max_health% with
-        relation to the victim, which resolved to zero. So, we have to parse statics and player statics
-        that might include a prefix first, then additional players, then player statics with the support
-        of additional players.
-
-        This was a massive headache and took so many reports before I clocked what was going on.
-
-        Oh well, at least it's fixed now.
-
-         */
-
-
-        for (InjectablePlaceholder injection : context.getPlaceholderInjections()) {
-            if (injection instanceof StaticPlaceholder placeholder) {
-                processed = processed.replace("%" + placeholder.getIdentifier() + "%", placeholder.getValue());
-            } else if (injection instanceof PlayerStaticPlaceholder placeholder && player != null) {
-                processed = processed.replace("%" + placeholder.getIdentifier() + "%", placeholder.getValue(player));
-            }
-        }
-
-        // Prevent running 2 scans if there are no additional players.
-        if (!additionalPlayers.isEmpty()) {
-            List<String> found = findPlaceholdersIn(text);
-
-            for (AdditionalPlayer additionalPlayer : additionalPlayers) {
-                for (String placeholder : found) {
-                    String prefix = "%" + additionalPlayer.getIdentifier() + "_";
-
-                    if (placeholder.startsWith(prefix)) {
-                        processed = processed.replace(
-                                placeholder,
-                                translatePlaceholders(
-                                        "%" + StringUtils.removePrefix(prefix, placeholder),
-                                        additionalPlayer.getPlayer()
-                                )
-                        );
-                    }
-                }
-            }
-        }
-
-        // Only run jank code if there are no integrations.
-        if (REGISTERED_INTEGRATIONS.isEmpty()) {
-            processed = setWithoutIntegration(processed, player);
-        }
-
-        for (PlaceholderIntegration integration : REGISTERED_INTEGRATIONS) {
-            processed = integration.translate(processed, player);
-        }
-
-        // DON'T REMOVE THIS, IT'S NOT DUPLICATE CODE.
-        for (InjectablePlaceholder injection : context.getPlaceholderInjections()) {
-            // Do I know this is a bad way of doing this? Yes.
-            if (injection instanceof PlayerStaticPlaceholder placeholder && player != null) {
-                processed = processed.replace("%" + placeholder.getIdentifier() + "%", placeholder.getValue(player));
-            }
-        }
-
-        return processed;
+    /**
+     * Translate all placeholders in a translation context.
+     *
+     * @param text    The text that may contain placeholders to translate.
+     * @param context The translation context.
+     * @return The text, translated.
+     */
+    @NotNull
+    public static String translatePlaceholders(@NotNull final String text,
+                                               @NotNull final PlaceholderContext context) {
+        return Eco.get().translatePlaceholders(text, context);
     }
 
     /**
@@ -331,108 +245,22 @@ public final class PlaceholderManager {
     }
 
     /**
-     * Set placeholders without any integrations.
-     * <p>
-     * This is fallback if for some reason you don't have PAPI installed.
-     * It's a cut-down version of the actual PAPI code, and I don't
-     * really know how it works.
-     * <p>
-     * Original source
-     * <a href="https://github.com/PlaceholderAPI/PlaceholderAPI/blob/master/src/main/java/me/clip/placeholderapi/replacer/CharsReplacer.java">here</a>.
+     * Get all registered placeholder integrations.
      *
-     * @param text   The text.
-     * @param player The player.
-     * @return The text.
+     * @return The integrations.
      */
-    private static String setWithoutIntegration(@NotNull final String text,
-                                                @Nullable final Player player) {
-        char[] chars = text.toCharArray();
-        StringBuilder builder = new StringBuilder(text.length());
-        StringBuilder identifier = new StringBuilder();
-        StringBuilder parameters = new StringBuilder();
-
-        for (int i = 0; i < chars.length; i++) {
-            char currentChar = chars[i];
-            if (currentChar == '%' && i + 1 < chars.length) {
-                boolean identified = false;
-                boolean badPlaceholder = true;
-                boolean hadSpace = false;
-
-                while (true) {
-                    i++;
-                    if (i >= chars.length) {
-                        break;
-                    }
-
-                    char p = chars[i];
-                    if (p == ' ' && !identified) {
-                        hadSpace = true;
-                        break;
-                    }
-
-                    if (p == '%') {
-                        badPlaceholder = false;
-                        break;
-                    }
-
-                    if (p == '_' && !identified) {
-                        identified = true;
-                    } else if (identified) {
-                        parameters.append(p);
-                    } else {
-                        identifier.append(p);
-                    }
-                }
-
-                String pluginName = identifier.toString().toLowerCase();
-                EcoPlugin plugin = EcoPlugin.getPlugin(pluginName);
-                String placeholderIdentifier = parameters.toString();
-                identifier.setLength(0);
-                parameters.setLength(0);
-                if (badPlaceholder) {
-                    builder.append('%').append(pluginName);
-                    if (identified) {
-                        builder.append('_').append(placeholderIdentifier);
-                    }
-
-                    if (hadSpace) {
-                        builder.append(' ');
-                    }
-                } else {
-                    if (plugin == null) {
-                        builder.append('%').append(pluginName);
-
-                        if (identified) {
-                            builder.append('_');
-                        }
-
-                        builder.append(placeholderIdentifier).append('%');
-                    } else {
-                        builder.append(getResult(player, placeholderIdentifier, plugin));
-                    }
-                }
-            } else {
-                builder.append(currentChar);
-            }
-        }
-
-        return builder.toString();
+    public static Set<PlaceholderIntegration> getRegisteredIntegrations() {
+        return Set.copyOf(REGISTERED_INTEGRATIONS);
     }
 
-    private record PlaceholderLookup(@NotNull String identifier,
-                                     @Nullable EcoPlugin plugin) {
-
-    }
-
-    private record EntryWithPlayer(@NotNull PlayerPlaceholder entry,
-                                   @NotNull Player player) {
-
-    }
-
-    private record DynamicEntryWithPlayer(@NotNull PlayerDynamicPlaceholder entry,
-                                          @NotNull String args,
-                                          @NotNull Player player) {
-
+    /**
+     * Get all registered placeholders for a plugin.
+     *
+     * @param plugin The plugin.
+     * @return The placeholders.
+     */
+    public static Set<Placeholder> getRegisteredPlaceholders(@NotNull final EcoPlugin plugin) {
+        return REGISTERED_PLACEHOLDERS.get(plugin);
     }
 
     private PlaceholderManager() {

eco-api/src/main/java/com/willfp/eco/core/items/CustomItem.java

@@ -1,7 +1,6 @@
 package com.willfp.eco.core.items;
 
 import com.willfp.eco.core.Eco;
-import org.bukkit.Bukkit;
 import org.bukkit.NamespacedKey;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -55,7 +54,7 @@ public class CustomItem implements TestableItem {
          */
         Eco.get().getEcoPlugin().getScheduler().runLater(() -> {
             if (!matches(getItem())) {
-                Bukkit.getLogger().severe("Item with key " + key + " is invalid!");
+                Eco.get().getEcoPlugin().getLogger().severe("Item with key " + key + " is invalid!");
             }
         }, 1);
     }

eco-api/src/main/java/com/willfp/eco/core/map/DefaultMap.java

@@ -150,7 +150,7 @@ public class DefaultMap<K, V> implements Map<K, V> {
      */
     @NotNull
     public static <K, K1, V> DefaultMap<K, Map<K1, V>> createNestedMap() {
-        return new DefaultMap<>(new HashMap<>());
+        return new DefaultMap<>(HashMap::new);
     }
 
     /**
@@ -163,6 +163,6 @@ public class DefaultMap<K, V> implements Map<K, V> {
      */
     @NotNull
     public static <K, K1, V> DefaultMap<K, ListMap<K1, V>> createNestedListMap() {
-        return new DefaultMap<>(new ListMap<>());
+        return new DefaultMap<>(ListMap::new);
     }
 }

eco-api/src/main/java/com/willfp/eco/core/math/MathContext.java

@@ -3,27 +3,25 @@ package com.willfp.eco.core.math;
 import com.willfp.eco.core.integrations.placeholder.PlaceholderManager;
 import com.willfp.eco.core.placeholder.AdditionalPlayer;
 import com.willfp.eco.core.placeholder.PlaceholderInjectable;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Objects;
 
 /**
- * Represents a context to do math in.
+ * Represents a context to parse math in.
  *
- * @param injectableContext The PlaceholderInjectable context.
- * @param player            The player.
- * @param additionalPlayers The additional players.
+ * @deprecated Use {@link PlaceholderContext} instead.
  */
-public record MathContext(
-        @NotNull PlaceholderInjectable injectableContext,
-        @Nullable Player player,
-        @NotNull Collection<AdditionalPlayer> additionalPlayers
-) {
+@SuppressWarnings("DeprecatedIsStillUsed")
+@Deprecated(since = "6.56.0", forRemoval = true)
+public class MathContext {
     /**
-     * Empty math context.
+     * Returns an empty math parseContext.
      */
     public static final MathContext EMPTY = new MathContext(
             PlaceholderManager.EMPTY_INJECTABLE,
@@ -32,9 +30,157 @@ public record MathContext(
     );
 
     /**
-     * Create MathContext of a PlaceholderInjectable context.
+     * The PlaceholderInjectable parse context.
+     */
+    @NotNull
+    private final PlaceholderInjectable injectableContext;
+
+    /**
+     * The player.
+     */
+    @Nullable
+    private final Player player;
+
+    /**
+     * The additional players.
+     */
+    @NotNull
+    private final Collection<AdditionalPlayer> additionalPlayers;
+
+    /**
+     * Constructs a new MathContext with the given parameters.
      *
-     * @param injectableContext The PlaceholderInjectable context.
+     * @param injectableContext The PlaceholderInjectable parseContext.
+     * @param player            The player.
+     * @param additionalPlayers The additional players.
+     */
+    public MathContext(@NotNull PlaceholderInjectable injectableContext,
+                       @Nullable Player player,
+                       @NotNull Collection<AdditionalPlayer> additionalPlayers) {
+        this.injectableContext = injectableContext;
+        this.player = player;
+        this.additionalPlayers = additionalPlayers;
+    }
+
+    /**
+     * Returns the PlaceholderInjectable parse context.
+     * <p>
+     * Duplicate method because MathContext used to be a record.
+     *
+     * @return The injectable context.
+     * @deprecated Use {@link #getInjectableContext()} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    public PlaceholderInjectable injectableContext() {
+        return injectableContext;
+    }
+
+    /**
+     * Returns the PlaceholderInjectable parse context.
+     *
+     * @return The injectable context.
+     */
+    @NotNull
+    public PlaceholderInjectable getInjectableContext() {
+        return injectableContext;
+    }
+
+    /**
+     * Returns the player.
+     * <p>
+     * Duplicate method because MathContext used to be a record.
+     *
+     * @return The player.
+     * @deprecated Use {@link #getPlayer()} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @Nullable
+    public Player player() {
+        return player;
+    }
+
+    /**
+     * Returns the player.
+     *
+     * @return The player.
+     */
+    @Nullable
+    public Player getPlayer() {
+        return player;
+    }
+
+    /**
+     * Returns the additional players.
+     * <p>
+     * Duplicate method because MathContext used to be a record.
+     *
+     * @return The additional players.
+     * @deprecated Use {@link #getAdditionalPlayers()} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
+    public Collection<AdditionalPlayer> additionalPlayers() {
+        return additionalPlayers;
+    }
+
+    /**
+     * Returns the additional players.
+     *
+     * @return The additional players.
+     */
+    @NotNull
+    public Collection<AdditionalPlayer> getAdditionalPlayers() {
+        return additionalPlayers;
+    }
+
+    /**
+     * Convert to PlaceholderContext.
+     *
+     * @return The PlaceholderContext.
+     */
+    @NotNull
+    public PlaceholderContext toPlaceholderContext() {
+        return new PlaceholderContext(
+                this.player,
+                null,
+                this.injectableContext,
+                this.additionalPlayers
+        );
+    }
+
+    @Override
+    public String toString() {
+        return "MathContext{" +
+                "injectableContext=" + injectableContext +
+                ", player=" + player +
+                ", additionalPlayers=" + additionalPlayers +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof MathContext that)) {
+            return false;
+        }
+
+        return injectableContext.equals(that.injectableContext) &&
+                Objects.equals(player, that.player) &&
+                additionalPlayers.equals(that.additionalPlayers);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(injectableContext, player, additionalPlayers);
+    }
+
+    /**
+     * Create MathContext of a PlaceholderInjectable parseContext.
+     *
+     * @param injectableContext The PlaceholderInjectable parseContext.
      * @return The MathContext.
      */
     public static MathContext of(@NotNull final PlaceholderInjectable injectableContext) {
@@ -48,16 +194,16 @@ public record MathContext(
     /**
      * Copy a MathContext with a player.
      *
-     * @param context The context.
+     * @param context The parseContext.
      * @param player  The player.
      * @return The new MathContext.
      */
     public static MathContext copyWithPlayer(@NotNull final MathContext context,
                                              @Nullable final Player player) {
         return new MathContext(
-                context.injectableContext(),
+                context.injectableContext,
                 player,
-                context.additionalPlayers()
+                context.additionalPlayers
         );
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/DynamicPlaceholder.java

@@ -1,7 +1,7 @@
 package com.willfp.eco.core.placeholder;
 
 import com.willfp.eco.core.EcoPlugin;
-import com.willfp.eco.core.integrations.placeholder.PlaceholderManager;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -12,24 +12,24 @@ import java.util.regex.Pattern;
 /**
  * A placeholder that does not require a player and supports dynamic styles.
  */
-public final class DynamicPlaceholder implements Placeholder {
+public final class DynamicPlaceholder implements RegistrablePlaceholder {
     /**
-     * The placeholder pattern.
+     * The arguments pattern.
      */
     private final Pattern pattern;
 
     /**
-     * The function to retrieve the output of the placeholder.
+     * The function to retrieve the output of the arguments.
      */
-    private final Function<String, String> function;
+    private final Function<@NotNull String, @Nullable String> function;
 
     /**
-     * The plugin for the placeholder.
+     * The plugin for the arguments.
      */
     private final EcoPlugin plugin;
 
     /**
-     * Create a new dynamic placeholder.
+     * Create a new dynamic arguments.
      *
      * @param plugin   The plugin.
      * @param pattern  The pattern.
@@ -37,31 +37,33 @@ public final class DynamicPlaceholder implements Placeholder {
      */
     public DynamicPlaceholder(@NotNull final EcoPlugin plugin,
                               @NotNull final Pattern pattern,
-                              @NotNull final Function<String, String> function) {
+                              @NotNull final Function<@NotNull String, @Nullable String> function) {
         this.plugin = plugin;
         this.pattern = pattern;
         this.function = function;
     }
 
-    /**
-     * Get the value of the placeholder.
-     *
-     * @param args The args.
-     * @return The value.
-     */
-    @NotNull
-    public String getValue(@NotNull final String args) {
+    @Override
+    @Nullable
+    public String getValue(@NotNull final String args,
+                           @NotNull final PlaceholderContext context) {
         return function.apply(args);
     }
 
     /**
-     * Register the placeholder.
+     * Get the value of the arguments.
      *
-     * @return The placeholder.
+     * @param args The args.
+     * @return The value.
+     * @deprecated Use {@link #getValue(String, PlaceholderContext)} instead.
      */
-    public DynamicPlaceholder register() {
-        PlaceholderManager.registerPlaceholder(this);
-        return this;
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
+    public String getValue(@NotNull final String args) {
+        return Objects.requireNonNullElse(
+                function.apply(args),
+                ""
+        );
     }
 
     @Override
@@ -69,18 +71,17 @@ public final class DynamicPlaceholder implements Placeholder {
         return this.plugin;
     }
 
-    @Override
-    @Deprecated
-    public @NotNull String getIdentifier() {
-        return "dynamic";
-    }
-
     @NotNull
     @Override
     public Pattern getPattern() {
         return this.pattern;
     }
 
+    @Override
+    public @NotNull DynamicPlaceholder register() {
+        return (DynamicPlaceholder) RegistrablePlaceholder.super.register();
+    }
+
     @Override
     public boolean equals(@Nullable final Object o) {
         if (this == o) {
@@ -97,6 +98,6 @@ public final class DynamicPlaceholder implements Placeholder {
 
     @Override
     public int hashCode() {
-        return Objects.hash(this.getIdentifier(), this.getPlugin());
+        return Objects.hash(this.getPattern(), this.getPlugin());
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/InjectablePlaceholder.java

@@ -1,15 +1,20 @@
 package com.willfp.eco.core.placeholder;
 
-import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.EcoPlugin;
-import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 /**
  * Placeholders that can be injected into {@link PlaceholderInjectable} objects.
  */
-public sealed interface InjectablePlaceholder extends Placeholder permits PlayerStaticPlaceholder, StaticPlaceholder {
+public interface InjectablePlaceholder extends Placeholder {
+    /**
+     * Get the plugin that holds the arguments.
+     *
+     * @return The plugin.
+     */
+    @Nullable
     @Override
-    default @NotNull EcoPlugin getPlugin() {
-        return Eco.get().getEcoPlugin();
+    default EcoPlugin getPlugin() {
+        return null;
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/Placeholder.java

@@ -1,38 +1,64 @@
 package com.willfp.eco.core.placeholder;
 
 import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.regex.Pattern;
 
 /**
  * A placeholder represents a string that can hold a value.
  */
-public sealed interface Placeholder permits PlayerPlaceholder, PlayerlessPlaceholder,
-        DynamicPlaceholder, PlayerDynamicPlaceholder, InjectablePlaceholder {
+public interface Placeholder {
     /**
-     * Get the plugin that holds the placeholder.
+     * Get the plugin that holds the arguments.
      *
      * @return The plugin.
      */
-    @NotNull
+    @Nullable
     EcoPlugin getPlugin();
 
     /**
-     * Get the identifier for the placeholder.
+     * Get the value of the arguments.
      *
-     * @return The identifier.
+     * @param args    The args.
+     * @param context The context.
+     * @return The value.
      */
-    @NotNull
-    String getIdentifier();
+    @Nullable
+    String getValue(@NotNull String args,
+                    @NotNull PlaceholderContext context);
 
     /**
-     * Get the pattern for the placeholder.
+     * Get the pattern for the arguments.
      *
      * @return The pattern.
      */
     @NotNull
-    default Pattern getPattern() {
-        return Pattern.compile(this.getIdentifier());
+    Pattern getPattern();
+
+    /**
+     * Try to translate all instances of this placeholder in text quickly.
+     *
+     * @param text    The text to translate.
+     * @param context The context.
+     * @return The translated text.
+     */
+    default String tryTranslateQuickly(@NotNull final String text,
+                                       @NotNull final PlaceholderContext context) {
+        return text;
+    }
+
+    /**
+     * Get the identifier for the arguments.
+     *
+     * @return The identifier.
+     * @deprecated Some arguments may not have an identifier. Use {@link #getPattern()} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
+    default String getIdentifier() {
+        return this.getPattern().pattern();
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/PlaceholderInjectable.java

@@ -9,7 +9,7 @@ import java.util.List;
  */
 public interface PlaceholderInjectable {
     /**
-     * Inject placeholder.
+     * Inject arguments.
      *
      * @param placeholders The placeholders.
      */
@@ -18,7 +18,7 @@ public interface PlaceholderInjectable {
     }
 
     /**
-     * Inject placeholder.
+     * Inject arguments.
      *
      * @param placeholders The placeholders.
      */
@@ -29,7 +29,7 @@ public interface PlaceholderInjectable {
     /**
      * Inject placeholders.
      * <p>
-     * When implementing a PlaceholderInjectable object, override this method.
+     * If a placeholder already has the same pattern, it should be replaced.
      *
      * @param placeholders The placeholders.
      */
@@ -43,7 +43,7 @@ public interface PlaceholderInjectable {
     /**
      * Get injected placeholders.
      * <p>
-     * Override this method in implementations.
+     * This method should always return an immutable list.
      *
      * @return Injected placeholders.
      */

eco-api/src/main/java/com/willfp/eco/core/placeholder/PlayerDynamicPlaceholder.java

@@ -1,7 +1,7 @@
 package com.willfp.eco.core.placeholder;
 
 import com.willfp.eco.core.EcoPlugin;
-import com.willfp.eco.core.integrations.placeholder.PlaceholderManager;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -11,26 +11,26 @@ import java.util.function.BiFunction;
 import java.util.regex.Pattern;
 
 /**
- * A placeholder that does not require a player and supports dynamic styles.
+ * A arguments that does not require a player and supports dynamic styles.
  */
-public final class PlayerDynamicPlaceholder implements Placeholder {
+public final class PlayerDynamicPlaceholder implements RegistrablePlaceholder {
     /**
-     * The placeholder pattern.
+     * The arguments pattern.
      */
     private final Pattern pattern;
 
     /**
-     * The function to retrieve the output of the placeholder.
+     * The function to retrieve the output of the arguments.
      */
-    private final BiFunction<String, Player, String> function;
+    private final BiFunction<@NotNull String, @NotNull Player, @Nullable String> function;
 
     /**
-     * The plugin for the placeholder.
+     * The plugin for the arguments.
      */
     private final EcoPlugin plugin;
 
     /**
-     * Create a new dynamic placeholder.
+     * Create a new dynamic arguments.
      *
      * @param plugin   The plugin.
      * @param pattern  The pattern.
@@ -38,33 +38,40 @@ public final class PlayerDynamicPlaceholder implements Placeholder {
      */
     public PlayerDynamicPlaceholder(@NotNull final EcoPlugin plugin,
                                     @NotNull final Pattern pattern,
-                                    @NotNull final BiFunction<String, Player, String> function) {
+                                    @NotNull final BiFunction<@NotNull String, @NotNull Player, @Nullable String> function) {
         this.plugin = plugin;
         this.pattern = pattern;
         this.function = function;
     }
 
-    /**
-     * Get the value of the placeholder.
-     *
-     * @param args   The args.
-     * @param player The player.
-     * @return The value.
-     */
-    @NotNull
-    public String getValue(@NotNull final String args,
-                           @NotNull final Player player) {
+    @Override
+    public @Nullable String getValue(@NotNull final String args,
+                                     @NotNull final PlaceholderContext context) {
+        Player player = context.getPlayer();
+
+        if (player == null) {
+            return null;
+        }
+
         return function.apply(args, player);
     }
 
     /**
-     * Register the placeholder.
+     * Get the value of the arguments.
      *
-     * @return The placeholder.
+     * @param args   The args.
+     * @param player The player.
+     * @return The value.
+     * @deprecated Use {@link #getValue(String, PlaceholderContext)} instead.
      */
-    public PlayerDynamicPlaceholder register() {
-        PlaceholderManager.registerPlaceholder(this);
-        return this;
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
+    public String getValue(@NotNull final String args,
+                           @NotNull final Player player) {
+        return Objects.requireNonNullElse(
+                function.apply(args, player),
+                ""
+        );
     }
 
     @Override
@@ -72,18 +79,17 @@ public final class PlayerDynamicPlaceholder implements Placeholder {
         return this.plugin;
     }
 
-    @Override
-    @Deprecated
-    public @NotNull String getIdentifier() {
-        return "dynamic";
-    }
-
     @NotNull
     @Override
     public Pattern getPattern() {
         return this.pattern;
     }
 
+    @Override
+    public @NotNull PlayerDynamicPlaceholder register() {
+        return (PlayerDynamicPlaceholder) RegistrablePlaceholder.super.register();
+    }
+
     @Override
     public boolean equals(@Nullable final Object o) {
         if (this == o) {
@@ -100,6 +106,6 @@ public final class PlayerDynamicPlaceholder implements Placeholder {
 
     @Override
     public int hashCode() {
-        return Objects.hash(this.getIdentifier(), this.getPlugin());
+        return Objects.hash(this.getPattern(), this.getPlugin());
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/PlayerPlaceholder.java

@@ -1,7 +1,8 @@
 package com.willfp.eco.core.placeholder;
 
 import com.willfp.eco.core.EcoPlugin;
-import com.willfp.eco.core.integrations.placeholder.PlaceholderManager;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -11,31 +12,26 @@ import java.util.function.Function;
 import java.util.regex.Pattern;
 
 /**
- * A placeholder that requires a player.
+ * A arguments that requires a player.
  */
-public final class PlayerPlaceholder implements Placeholder {
+public final class PlayerPlaceholder implements RegistrablePlaceholder {
     /**
-     * The name of the placeholder.
-     */
-    private final String identifier;
-
-    /**
-     * The placeholder pattern.
+     * The arguments pattern.
      */
     private final Pattern pattern;
 
     /**
-     * The function to retrieve the output of the placeholder given a player.
+     * The function to retrieve the output of the arguments given a player.
      */
-    private final Function<Player, String> function;
+    private final Function<@NotNull Player, @Nullable String> function;
 
     /**
-     * The plugin for the placeholder.
+     * The plugin for the arguments.
      */
     private final EcoPlugin plugin;
 
     /**
-     * Create a new player placeholder.
+     * Create a new player arguments.
      *
      * @param plugin     The plugin.
      * @param identifier The identifier.
@@ -43,32 +39,38 @@ public final class PlayerPlaceholder implements Placeholder {
      */
     public PlayerPlaceholder(@NotNull final EcoPlugin plugin,
                              @NotNull final String identifier,
-                             @NotNull final Function<Player, String> function) {
+                             @NotNull final Function<@NotNull Player, @Nullable String> function) {
         this.plugin = plugin;
-        this.identifier = identifier;
-        this.pattern = Pattern.compile(identifier);
+        this.pattern = PatternUtils.compileLiteral(identifier);
         this.function = function;
     }
 
-    /**
-     * Get the value of the placeholder for a given player.
-     *
-     * @param player The player.
-     * @return The value.
-     */
-    @NotNull
-    public String getValue(@NotNull final Player player) {
+    @Override
+    public @Nullable String getValue(@NotNull final String args,
+                                     @NotNull final PlaceholderContext context) {
+        Player player = context.getPlayer();
+
+        if (player == null) {
+            return null;
+        }
+
         return function.apply(player);
     }
 
     /**
-     * Register the placeholder.
+     * Get the value of the arguments for a given player.
      *
-     * @return The placeholder.
+     * @param player The player.
+     * @return The value.
+     * @deprecated Use {@link #getValue(String, PlaceholderContext)} instead.
      */
-    public PlayerPlaceholder register() {
-        PlaceholderManager.registerPlaceholder(this);
-        return this;
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
+    public String getValue(@NotNull final Player player) {
+        return Objects.requireNonNullElse(
+                function.apply(player),
+                ""
+        );
     }
 
     @Override
@@ -76,17 +78,17 @@ public final class PlayerPlaceholder implements Placeholder {
         return this.plugin;
     }
 
-    @Override
-    public @NotNull String getIdentifier() {
-        return this.identifier;
-    }
-
     @NotNull
     @Override
     public Pattern getPattern() {
         return this.pattern;
     }
 
+    @Override
+    public @NotNull PlayerPlaceholder register() {
+        return (PlayerPlaceholder) RegistrablePlaceholder.super.register();
+    }
+
     @Override
     public boolean equals(@Nullable final Object o) {
         if (this == o) {
@@ -95,12 +97,12 @@ public final class PlayerPlaceholder implements Placeholder {
         if (!(o instanceof PlayerPlaceholder that)) {
             return false;
         }
-        return Objects.equals(this.getIdentifier(), that.getIdentifier())
+        return Objects.equals(this.getPattern(), that.getPattern())
                 && Objects.equals(this.getPlugin(), that.getPlugin());
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(this.getIdentifier(), this.getPlugin());
+        return Objects.hash(this.getPattern(), this.getPlugin());
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/PlayerStaticPlaceholder.java

@@ -1,5 +1,8 @@
 package com.willfp.eco.core.placeholder;
 
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
+import com.willfp.eco.util.StringUtils;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -13,47 +16,72 @@ import java.util.regex.Pattern;
  */
 public final class PlayerStaticPlaceholder implements InjectablePlaceholder {
     /**
-     * The name of the placeholder.
+     * The identifier.
      */
     private final String identifier;
 
     /**
-     * The placeholder pattern.
+     * The arguments pattern.
      */
     private final Pattern pattern;
 
     /**
-     * The function to retrieve the output of the placeholder.
+     * The function to retrieve the output of the arguments.
      */
-    private final Function<Player, String> function;
+    private final Function<@NotNull Player, @Nullable String> function;
 
     /**
-     * Create a new player placeholder.
+     * Create a new player arguments.
      *
      * @param identifier The identifier.
      * @param function   The function to retrieve the value.
      */
     public PlayerStaticPlaceholder(@NotNull final String identifier,
-                                   @NotNull final Function<Player, String> function) {
-        this.identifier = identifier;
-        this.pattern = Pattern.compile(identifier);
+                                   @NotNull final Function<@NotNull Player, @Nullable String> function) {
+        this.identifier = "%" + identifier + "%";
+        this.pattern = PatternUtils.compileLiteral(identifier);
         this.function = function;
     }
 
+    @Override
+    public @Nullable String getValue(@NotNull final String args,
+                                     @NotNull final PlaceholderContext context) {
+        Player player = context.getPlayer();
+
+        if (player == null) {
+            return null;
+        }
+
+        return this.getValue(player);
+    }
+
     /**
-     * Get the value of the placeholder.
+     * Get the value of the arguments.
      *
      * @param player The player.
      * @return The value.
+     * @deprecated Use {@link #getValue(String, PlaceholderContext)} instead.
      */
+    @Deprecated(since = "6.56.0", forRemoval = true)
     @NotNull
     public String getValue(@NotNull final Player player) {
-        return function.apply(player);
+        return Objects.requireNonNullElse(
+                function.apply(player),
+                ""
+        );
     }
 
     @Override
-    public @NotNull String getIdentifier() {
-        return this.identifier;
+    public String tryTranslateQuickly(@NotNull final String text,
+                                      @NotNull final PlaceholderContext context) {
+        return StringUtils.replaceQuickly(
+                text,
+                this.identifier,
+                Objects.requireNonNullElse(
+                        this.getValue(identifier, context),
+                        ""
+                )
+        );
     }
 
     @NotNull
@@ -70,11 +98,11 @@ public final class PlayerStaticPlaceholder implements InjectablePlaceholder {
         if (!(o instanceof PlayerStaticPlaceholder that)) {
             return false;
         }
-        return Objects.equals(this.getIdentifier(), that.getIdentifier());
+        return Objects.equals(this.getPattern(), that.getPattern());
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(this.getIdentifier());
+        return Objects.hash(this.getPattern());
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/PlayerlessPlaceholder.java

@@ -1,7 +1,8 @@
 package com.willfp.eco.core.placeholder;
 
 import com.willfp.eco.core.EcoPlugin;
-import com.willfp.eco.core.integrations.placeholder.PlaceholderManager;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -10,31 +11,26 @@ import java.util.function.Supplier;
 import java.util.regex.Pattern;
 
 /**
- * A placeholder that does not require a player.
+ * A arguments that does not require a player.
  */
-public final class PlayerlessPlaceholder implements Placeholder {
+public final class PlayerlessPlaceholder implements RegistrablePlaceholder {
     /**
-     * The placeholder identifier.
-     */
-    private final String identifier;
-
-    /**
-     * The placeholder pattern.
+     * The arguments pattern.
      */
     private final Pattern pattern;
 
     /**
-     * The function to retrieve the output of the placeholder.
+     * The function to retrieve the output of the arguments.
      */
-    private final Supplier<String> function;
+    private final Supplier<@Nullable String> function;
 
     /**
-     * The plugin for the placeholder.
+     * The plugin for the arguments.
      */
     private final EcoPlugin plugin;
 
     /**
-     * Create a new player placeholder.
+     * Create a new player arguments.
      *
      * @param plugin     The plugin.
      * @param identifier The identifier.
@@ -42,30 +38,31 @@ public final class PlayerlessPlaceholder implements Placeholder {
      */
     public PlayerlessPlaceholder(@NotNull final EcoPlugin plugin,
                                  @NotNull final String identifier,
-                                 @NotNull final Supplier<String> function) {
+                                 @NotNull final Supplier<@Nullable String> function) {
         this.plugin = plugin;
-        this.identifier = identifier;
-        this.pattern = Pattern.compile(identifier);
+        this.pattern = PatternUtils.compileLiteral(identifier);
         this.function = function;
     }
 
-    /**
-     * Get the value of the placeholder.
-     *
-     * @return The value.
-     */
-    public String getValue() {
+    @Override
+    public @Nullable String getValue(@NotNull final String args,
+                                     @NotNull final PlaceholderContext context) {
         return function.get();
     }
 
     /**
-     * Register the placeholder.
+     * Get the value of the arguments.
      *
-     * @return The placeholder.
+     * @return The value.
+     * @deprecated Use {@link #getValue(String, PlaceholderContext)} instead.
      */
-    public PlayerlessPlaceholder register() {
-        PlaceholderManager.registerPlaceholder(this);
-        return this;
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
+    public String getValue() {
+        return Objects.requireNonNullElse(
+                this.function.get(),
+                ""
+        );
     }
 
     @Override
@@ -73,17 +70,17 @@ public final class PlayerlessPlaceholder implements Placeholder {
         return this.plugin;
     }
 
-    @Override
-    public @NotNull String getIdentifier() {
-        return this.identifier;
-    }
-
     @NotNull
     @Override
     public Pattern getPattern() {
         return this.pattern;
     }
 
+    @Override
+    public @NotNull PlayerlessPlaceholder register() {
+        return (PlayerlessPlaceholder) RegistrablePlaceholder.super.register();
+    }
+
     @Override
     public boolean equals(@Nullable final Object o) {
         if (this == o) {
@@ -92,12 +89,12 @@ public final class PlayerlessPlaceholder implements Placeholder {
         if (!(o instanceof PlayerlessPlaceholder that)) {
             return false;
         }
-        return Objects.equals(this.getIdentifier(), that.getIdentifier())
+        return Objects.equals(this.getPattern(), that.getPattern())
                 && Objects.equals(this.getPlugin(), that.getPlugin());
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(this.getIdentifier(), this.getPlugin());
+        return Objects.hash(this.getPattern(), this.getPlugin());
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/RegistrablePlaceholder.java

@@ -0,0 +1,31 @@
+package com.willfp.eco.core.placeholder;
+
+import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.integrations.placeholder.PlaceholderManager;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Represents a placeholder that can be registered.
+ */
+public interface RegistrablePlaceholder extends Placeholder {
+    /**
+     * Get the plugin that holds the arguments.
+     *
+     * @return The plugin.
+     */
+    @NotNull
+    @Override
+    EcoPlugin getPlugin();
+
+    /**
+     * Register the arguments.
+     *
+     * @return The arguments.
+     */
+    @NotNull
+    default RegistrablePlaceholder register() {
+        PlaceholderManager.registerPlaceholder(this);
+        return this;
+    }
+}
+

eco-api/src/main/java/com/willfp/eco/core/placeholder/StaticPlaceholder.java

@@ -1,5 +1,8 @@
 package com.willfp.eco.core.placeholder;
 
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
+import com.willfp.eco.util.StringUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -8,50 +11,66 @@ import java.util.function.Supplier;
 import java.util.regex.Pattern;
 
 /**
- * A placeholder that cannot be registered, and exists purely in injection.
+ * A arguments that cannot be registered, and exists purely in injection.
  */
 public final class StaticPlaceholder implements InjectablePlaceholder {
     /**
-     * The name of the placeholder.
+     * The name of the arguments.
      */
     private final String identifier;
 
     /**
-     * The placeholder pattern.
+     * The arguments pattern.
      */
     private final Pattern pattern;
 
     /**
-     * The function to retrieve the output of the placeholder.
+     * The function to retrieve the output of the arguments.
      */
-    private final Supplier<String> function;
+    private final Supplier<@Nullable String> function;
 
     /**
-     * Create a new player placeholder.
+     * Create a new player arguments.
      *
      * @param identifier The identifier.
      * @param function   The function to retrieve the value.
      */
     public StaticPlaceholder(@NotNull final String identifier,
-                             @NotNull final Supplier<String> function) {
-        this.identifier = identifier;
-        this.pattern = Pattern.compile(identifier);
+                             @NotNull final Supplier<@Nullable String> function) {
+        this.identifier = "%" + identifier + "%";
+        this.pattern = PatternUtils.compileLiteral(identifier);
         this.function = function;
     }
 
-    /**
-     * Get the value of the placeholder.
-     *
-     * @return The value.
-     */
-    @NotNull
-    public String getValue() {
+    @Override
+    public @Nullable String getValue(@NotNull final String args,
+                                     @NotNull final PlaceholderContext context) {
         return function.get();
     }
 
+    /**
+     * Get the value of the arguments.
+     *
+     * @return The value.
+     * @deprecated Use {@link #getValue(String, PlaceholderContext)} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @NotNull
+    public String getValue() {
+        return Objects.requireNonNullElse(
+                function.get(),
+                ""
+        );
+    }
+
     @Override
-    public @NotNull String getIdentifier() {
-        return this.identifier;
+    public String tryTranslateQuickly(@NotNull final String text,
+                                      @NotNull final PlaceholderContext context) {
+        return StringUtils.replaceQuickly(
+                text,
+                this.identifier,
+                Objects.requireNonNullElse(this.getValue(this.identifier, context), "")
+        );
     }
 
     @NotNull
@@ -68,11 +87,11 @@ public final class StaticPlaceholder implements InjectablePlaceholder {
         if (!(o instanceof StaticPlaceholder that)) {
             return false;
         }
-        return Objects.equals(this.getIdentifier(), that.getIdentifier());
+        return Objects.equals(this.getPattern(), that.getPattern());
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(this.getIdentifier());
+        return Objects.hash(this.getPattern());
     }
 }

eco-api/src/main/java/com/willfp/eco/core/placeholder/context/MergedInjectableContext.java

@@ -0,0 +1,92 @@
+package com.willfp.eco.core.placeholder.context;
+
+import com.willfp.eco.core.placeholder.InjectablePlaceholder;
+import com.willfp.eco.core.placeholder.PlaceholderInjectable;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+
+/**
+ * A merged injectable context.
+ */
+public class MergedInjectableContext implements PlaceholderInjectable {
+    /**
+     * The base context.
+     */
+    private final PlaceholderInjectable baseContext;
+
+    /**
+     * The additional context.
+     */
+    private final PlaceholderInjectable additionalContext;
+
+    /**
+     * Extra injections.
+     */
+    private final Set<InjectablePlaceholder> extraInjections = new HashSet<>();
+
+    /**
+     * Create a new merged injectable context.
+     *
+     * @param baseContext       The base context.
+     * @param additionalContext The additional context.
+     */
+    public MergedInjectableContext(@NotNull final PlaceholderInjectable baseContext,
+                                   @NotNull final PlaceholderInjectable additionalContext) {
+        this.baseContext = baseContext;
+        this.additionalContext = additionalContext;
+    }
+
+    @Override
+    public void addInjectablePlaceholder(@NotNull final Iterable<InjectablePlaceholder> placeholders) {
+        for (InjectablePlaceholder placeholder : placeholders) {
+            extraInjections.add(placeholder);
+        }
+    }
+
+    @Override
+    public void clearInjectedPlaceholders() {
+        baseContext.clearInjectedPlaceholders();
+        additionalContext.clearInjectedPlaceholders();
+        extraInjections.clear();
+    }
+
+    @Override
+    public @NotNull List<InjectablePlaceholder> getPlaceholderInjections() {
+        List<InjectablePlaceholder> base = baseContext.getPlaceholderInjections();
+        List<InjectablePlaceholder> additional = additionalContext.getPlaceholderInjections();
+
+        List<InjectablePlaceholder> injections = new ArrayList<>(base.size() + additional.size() + extraInjections.size());
+
+        injections.addAll(base);
+        injections.addAll(additional);
+        injections.addAll(extraInjections);
+
+        return injections;
+    }
+
+    @Override
+    public boolean equals(@Nullable final Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof MergedInjectableContext that)) {
+            return false;
+        }
+
+        return Objects.equals(baseContext, that.baseContext)
+                && Objects.equals(additionalContext, that.additionalContext)
+                && Objects.equals(extraInjections, that.extraInjections);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(baseContext, additionalContext, extraInjections);
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/placeholder/context/PlaceholderContext.java

@@ -0,0 +1,252 @@
+package com.willfp.eco.core.placeholder.context;
+
+import com.willfp.eco.core.placeholder.AdditionalPlayer;
+import com.willfp.eco.core.placeholder.InjectablePlaceholder;
+import com.willfp.eco.core.placeholder.PlaceholderInjectable;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * Represents a context to translate placeholders in.
+ */
+public class PlaceholderContext {
+    /**
+     * An empty injectable.
+     */
+    private static final PlaceholderInjectable EMPTY_INJECTABLE = new PlaceholderInjectable() {
+        @Override
+        public void addInjectablePlaceholder(@NotNull final Iterable<InjectablePlaceholder> placeholders) {
+            // Do nothing.
+        }
+
+        @Override
+        public void clearInjectedPlaceholders() {
+            // Do nothing.
+        }
+
+        @Override
+        public @NotNull List<InjectablePlaceholder> getPlaceholderInjections() {
+            return Collections.emptyList();
+        }
+    };
+
+    /**
+     * An empty context.
+     */
+    public static final PlaceholderContext EMPTY = new PlaceholderContext(
+            null,
+            null,
+            null,
+            Collections.emptyList()
+    );
+
+    /**
+     * The player.
+     */
+    @Nullable
+    private final Player player;
+
+    /**
+     * The ItemStack.
+     */
+    @Nullable
+    private final ItemStack itemStack;
+
+    /**
+     * The PlaceholderInjectable context.
+     */
+    @NotNull
+    private final PlaceholderInjectable injectableContext;
+
+    /**
+     * The additional players.
+     */
+    @NotNull
+    private final Collection<AdditionalPlayer> additionalPlayers;
+
+    /**
+     * Create an empty PlaceholderContext.
+     */
+    public PlaceholderContext() {
+        this(null, null, null, Collections.emptyList());
+    }
+
+    /**
+     * Create a PlaceholderContext for a player.
+     *
+     * @param player The player.
+     */
+    public PlaceholderContext(@Nullable final Player player) {
+        this(player, null, null, Collections.emptyList());
+    }
+
+    /**
+     * Constructs a new PlaceholderContext with the given parameters.
+     *
+     * @param player            The player.
+     * @param itemStack         The ItemStack.
+     * @param injectableContext The PlaceholderInjectable parseContext.
+     * @param additionalPlayers The additional players.
+     */
+    public PlaceholderContext(@Nullable final Player player,
+                              @Nullable final ItemStack itemStack,
+                              @Nullable final PlaceholderInjectable injectableContext,
+                              @NotNull final Collection<AdditionalPlayer> additionalPlayers) {
+        this.player = player;
+        this.itemStack = itemStack;
+        this.injectableContext = Objects.requireNonNullElse(injectableContext, EMPTY_INJECTABLE);
+        this.additionalPlayers = additionalPlayers;
+    }
+
+    /**
+     * Get the player.
+     *
+     * @return The player.
+     */
+    @Nullable
+    public Player getPlayer() {
+        return player;
+    }
+
+    /**
+     * Get the ItemStack.
+     *
+     * @return The ItemStack.
+     */
+    @Nullable
+    public ItemStack getItemStack() {
+        return itemStack;
+    }
+
+    /**
+     * Get the PlaceholderInjectable context.
+     *
+     * @return The PlaceholderInjectable context.
+     */
+    @NotNull
+    public PlaceholderInjectable getInjectableContext() {
+        return injectableContext;
+    }
+
+    /**
+     * Get the additional players.
+     *
+     * @return The additional players.
+     */
+    @NotNull
+    public Collection<AdditionalPlayer> getAdditionalPlayers() {
+        return additionalPlayers;
+    }
+
+    /**
+     * Convert to a {@link com.willfp.eco.core.math.MathContext}.
+     *
+     * @return The math context.
+     * @deprecated MathContext is deprecated, use {@link PlaceholderContext} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @SuppressWarnings({"removal", "DeprecatedIsStillUsed"})
+    public com.willfp.eco.core.math.MathContext toMathContext() {
+        return new com.willfp.eco.core.math.MathContext(this.getInjectableContext(), this.getPlayer(), this.getAdditionalPlayers());
+    }
+
+    /**
+     * Copy with a player.
+     *
+     * @param player The player.
+     * @return The new context.
+     */
+    public PlaceholderContext copyWithPlayer(@Nullable final Player player) {
+        return new PlaceholderContext(
+                player,
+                this.getItemStack(),
+                this.getInjectableContext(),
+                this.getAdditionalPlayers()
+        );
+    }
+
+    /**
+     * Copy with an item.
+     *
+     * @param itemStack The ItemStack.
+     * @return The new context.
+     */
+    public PlaceholderContext copyWithItem(@Nullable final ItemStack itemStack) {
+        return new PlaceholderContext(
+                this.getPlayer(),
+                itemStack,
+                this.getInjectableContext(),
+                this.getAdditionalPlayers()
+        );
+    }
+
+    /**
+     * Copy with an extra injectable context.
+     *
+     * @param injectableContext The injectable context to add.
+     * @return The new context.
+     */
+    public PlaceholderContext withInjectableContext(@NotNull final PlaceholderInjectable injectableContext) {
+        return new PlaceholderContext(
+                this.getPlayer(),
+                this.getItemStack(),
+                new MergedInjectableContext(this.getInjectableContext(), injectableContext),
+                this.getAdditionalPlayers()
+        );
+    }
+
+    @Override
+    public String toString() {
+        return "PlaceholderContext{" +
+                "player=" + player +
+                ", itemStack=" + itemStack +
+                ", injectableContext=" + injectableContext +
+                ", additionalPlayers=" + additionalPlayers +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof PlaceholderContext that)) {
+            return false;
+        }
+
+        return Objects.equals(
+                getPlayer(), that.getPlayer())
+                && Objects.equals(getItemStack(), that.getItemStack())
+                && getInjectableContext().equals(that.getInjectableContext())
+                && getAdditionalPlayers().equals(that.getAdditionalPlayers()
+        );
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(getPlayer(), getItemStack(), getInjectableContext(), getAdditionalPlayers());
+    }
+
+    /**
+     * Create PlaceholderContext of a PlaceholderInjectable parseContext.
+     *
+     * @param injectableContext The PlaceholderInjectable parseContext.
+     * @return The context.
+     */
+    public static PlaceholderContext of(@NotNull final PlaceholderInjectable injectableContext) {
+        return new PlaceholderContext(
+                null,
+                null,
+                injectableContext,
+                Collections.emptyList()
+        );
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/placeholder/context/PlaceholderContextSupplier.java

@@ -0,0 +1,19 @@
+package com.willfp.eco.core.placeholder.context;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * A supplier that takes a {@link PlaceholderContext} and returns a value.
+ *
+ * @param <T> The type of value to return.
+ */
+public interface PlaceholderContextSupplier<T> {
+    /**
+     * Get the value.
+     *
+     * @param context The context.
+     * @return The value.
+     */
+    @NotNull
+    T get(@NotNull PlaceholderContext context);
+}

eco-api/src/main/java/com/willfp/eco/core/placeholder/templates/DynamicInjectablePlaceholder.java

@@ -0,0 +1,57 @@
+package com.willfp.eco.core.placeholder.templates;
+
+import com.willfp.eco.core.placeholder.InjectablePlaceholder;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Objects;
+import java.util.regex.Pattern;
+
+/**
+ * A template class for dynamic placeholders.
+ */
+public abstract class DynamicInjectablePlaceholder implements InjectablePlaceholder {
+
+    /**
+     * The placeholder pattern.
+     */
+    private final Pattern pattern;
+
+    /**
+     * Create a new dynamic injectable placeholder.
+     *
+     * @param pattern The pattern.
+     */
+    protected DynamicInjectablePlaceholder(@NotNull final Pattern pattern) {
+        this.pattern = pattern;
+    }
+
+    @Override
+    public @NotNull Pattern getPattern() {
+        return pattern;
+    }
+
+    @Override
+    public String toString() {
+        return "DynamicInjectablePlaceholder{" +
+                "pattern='" + pattern + '\'' +
+                '}';
+    }
+
+    @Override
+    public boolean equals(@NotNull final Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof DynamicInjectablePlaceholder that)) {
+            return false;
+        }
+
+        return Objects.equals(pattern, that.getPattern());
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(pattern);
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/placeholder/templates/DynamicPlaceholder.java

@@ -0,0 +1,73 @@
+package com.willfp.eco.core.placeholder.templates;
+
+import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.placeholder.RegistrablePlaceholder;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Objects;
+import java.util.regex.Pattern;
+
+/**
+ * A template class for dynamic placeholders.
+ */
+public abstract class DynamicPlaceholder implements RegistrablePlaceholder {
+    /**
+     * The plugin.
+     */
+    private final EcoPlugin plugin;
+
+    /**
+     * The placeholder pattern.
+     */
+    private final Pattern pattern;
+
+    /**
+     * Create a new dynamic placeholder.
+     *
+     * @param plugin  The plugin.
+     * @param pattern The pattern.
+     */
+    protected DynamicPlaceholder(@NotNull final EcoPlugin plugin,
+                                 @NotNull final Pattern pattern) {
+        this.plugin = plugin;
+        this.pattern = pattern;
+    }
+
+    @Override
+    public @NotNull Pattern getPattern() {
+        return pattern;
+    }
+
+    @NotNull
+    @Override
+    public EcoPlugin getPlugin() {
+        return plugin;
+    }
+
+    @Override
+    public String toString() {
+        return "DynamicPlaceholder{" +
+                "plugin='" + plugin + '\'' +
+                "pattern='" + pattern + '\'' +
+                '}';
+    }
+
+    @Override
+    public boolean equals(@NotNull final Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof DynamicPlaceholder that)) {
+            return false;
+        }
+
+        return Objects.equals(pattern, that.getPattern())
+                && Objects.equals(plugin, that.getPlugin());
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(pattern, plugin);
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/placeholder/templates/SimpleInjectablePlaceholder.java

@@ -0,0 +1,73 @@
+package com.willfp.eco.core.placeholder.templates;
+
+import com.willfp.eco.core.placeholder.InjectablePlaceholder;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Objects;
+import java.util.regex.Pattern;
+
+/**
+ * A template class for simple placeholders.
+ */
+public abstract class SimpleInjectablePlaceholder implements InjectablePlaceholder {
+    /**
+     * The name of the placeholder.
+     */
+    private final String identifier;
+
+    /**
+     * The placeholder pattern.
+     */
+    private final Pattern pattern;
+
+    /**
+     * Create a new simple injectable placeholder.
+     *
+     * @param identifier The identifier.
+     */
+    protected SimpleInjectablePlaceholder(@NotNull final String identifier) {
+        this.identifier = identifier;
+        this.pattern = PatternUtils.compileLiteral(identifier);
+    }
+
+    @Override
+    public String tryTranslateQuickly(@NotNull final String text,
+                                      @NotNull final PlaceholderContext context) {
+        return text.replace(
+                "%" + this.identifier + "%",
+                Objects.requireNonNullElse(this.getValue(this.identifier, context), "")
+        );
+    }
+
+    @Override
+    public @NotNull Pattern getPattern() {
+        return pattern;
+    }
+
+    @Override
+    public String toString() {
+        return "SimpleInjectablePlaceholder{" +
+                "identifier='" + identifier + '\'' +
+                '}';
+    }
+
+    @Override
+    public boolean equals(@NotNull final Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof SimpleInjectablePlaceholder that)) {
+            return false;
+        }
+
+        return Objects.equals(identifier, that.identifier);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(identifier);
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/placeholder/templates/SimplePlaceholder.java

@@ -0,0 +1,90 @@
+package com.willfp.eco.core.placeholder.templates;
+
+import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.placeholder.RegistrablePlaceholder;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.util.PatternUtils;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Objects;
+import java.util.regex.Pattern;
+
+/**
+ * A template class for simple placeholders.
+ */
+public abstract class SimplePlaceholder implements RegistrablePlaceholder {
+    /**
+     * The plugin.
+     */
+    private final EcoPlugin plugin;
+
+    /**
+     * The name of the placeholder.
+     */
+    private final String identifier;
+
+    /**
+     * The placeholder pattern.
+     */
+    private final Pattern pattern;
+
+    /**
+     * Create a new simple placeholder.
+     *
+     * @param plugin     The plugin.
+     * @param identifier The identifier.
+     */
+    protected SimplePlaceholder(@NotNull final EcoPlugin plugin,
+                                @NotNull final String identifier) {
+        this.plugin = plugin;
+        this.identifier = identifier;
+        this.pattern = PatternUtils.compileLiteral(identifier);
+    }
+
+    @Override
+    public String tryTranslateQuickly(@NotNull final String text,
+                                      @NotNull final PlaceholderContext context) {
+        return text.replace(
+                "%" + this.identifier + "%",
+                Objects.requireNonNullElse(this.getValue(this.identifier, context), "")
+        );
+    }
+
+    @Override
+    public @NotNull Pattern getPattern() {
+        return pattern;
+    }
+
+    @NotNull
+    @Override
+    public EcoPlugin getPlugin() {
+        return plugin;
+    }
+
+    @Override
+    public String toString() {
+        return "SimplePlaceholder{" +
+                "plugin='" + plugin + '\'' +
+                "identifier='" + identifier + '\'' +
+                '}';
+    }
+
+    @Override
+    public boolean equals(@NotNull final Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (!(o instanceof SimplePlaceholder that)) {
+            return false;
+        }
+
+        return Objects.equals(pattern, that.getPattern())
+                && Objects.equals(plugin, that.getPlugin());
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(identifier, plugin);
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/price/ConfiguredPrice.java

@@ -1,7 +1,8 @@
 package com.willfp.eco.core.price;
 
+import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.config.interfaces.Config;
-import com.willfp.eco.core.math.MathContext;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import com.willfp.eco.core.price.impl.PriceFree;
 import com.willfp.eco.core.serialization.ConfigDeserializer;
 import com.willfp.eco.util.NumberUtils;
@@ -158,17 +159,32 @@ public final class ConfiguredPrice implements Price {
             if (!(
                     config.has("value")
                             && config.has("type")
-                            && config.has("display")
             )) {
                 return null;
             }
 
-            String formatString = config.getString("display");
+            String formatString;
+
+            String langConfig = Eco.get().getEcoPlugin().getLangYml()
+                    .getSubsections("price-display")
+                    .stream()
+                    .filter(section -> section.getString("type").equalsIgnoreCase(config.getString("type")))
+                    .findFirst()
+                    .map(section -> section.getString("display"))
+                    .orElse(null);
+
+            if (langConfig != null) {
+                formatString = langConfig;
+            } else if (config.has("display")) {
+                formatString = config.getString("display");
+            } else {
+                return null;
+            }
 
             Price price = Prices.create(
                     config.getString("value"),
                     config.getString("type"),
-                    MathContext.of(config)
+                    PlaceholderContext.of(config)
             );
 
             return new ConfiguredPrice(price, formatString);

eco-api/src/main/java/com/willfp/eco/core/price/PriceFactory.java

@@ -1,6 +1,7 @@
 package com.willfp.eco.core.price;
 
-import com.willfp.eco.core.math.MathContext;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.core.placeholder.context.PlaceholderContextSupplier;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 
@@ -10,7 +11,8 @@ import java.util.function.Function;
 /**
  * Create prices.
  * <p>
- * You must override one of the create methods.
+ * Override create(PlaceholderContext, PlaceholderContextSupplier), other methods
+ * are for backwards compatibility.
  */
 public interface PriceFactory {
     /**
@@ -27,20 +29,38 @@ public interface PriceFactory {
      *
      * @param value The value.
      * @return The price.
+     * @deprecated Use {@link #create(PlaceholderContext, PlaceholderContextSupplier)} instead.
      */
+    @Deprecated(since = "6.56.0", forRemoval = true)
     default @NotNull Price create(final double value) {
-        return create(MathContext.EMPTY, (ctx) -> value);
+        return create(PlaceholderContext.EMPTY, (ctx) -> value);
     }
 
     /**
      * Create the price.
      *
      * @param baseContext The base MathContext.
-     * @param function    The function to use. Should use {@link MathContext#copyWithPlayer(MathContext, Player)} on calls.
+     * @param function    The function to use. Should use {@link com.willfp.eco.core.math.MathContext#copyWithPlayer(com.willfp.eco.core.math.MathContext, Player)} on calls.
+     * @return The price.
+     * @deprecated Use {@link #create(PlaceholderContext, PlaceholderContextSupplier)} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @SuppressWarnings("removal")
+    default @NotNull Price create(@NotNull final com.willfp.eco.core.math.MathContext baseContext,
+                                  @NotNull final Function<com.willfp.eco.core.math.MathContext, Double> function) {
+        return create(baseContext.toPlaceholderContext(), (PlaceholderContext ctx) -> function.apply(ctx.toMathContext()));
+    }
+
+    /**
+     * Create the price.
+     *
+     * @param baseContext The base PlaceholderContext.
+     * @param function    The function to use. Should use {@link PlaceholderContext#copyWithPlayer(Player)} on calls.
      * @return The price.
      */
-    default @NotNull Price create(@NotNull final MathContext baseContext,
-                                  @NotNull final Function<MathContext, Double> function) {
-        return create(function.apply(baseContext));
+    @SuppressWarnings("removal")
+    default @NotNull Price create(@NotNull final PlaceholderContext baseContext,
+                                  @NotNull final PlaceholderContextSupplier<Double> function) {
+        return create(baseContext.toMathContext(), (com.willfp.eco.core.math.MathContext ctx) -> function.get(ctx.toPlaceholderContext()));
     }
 }

eco-api/src/main/java/com/willfp/eco/core/price/Prices.java

@@ -2,7 +2,8 @@ package com.willfp.eco.core.price;
 
 import com.willfp.eco.core.items.Items;
 import com.willfp.eco.core.items.TestableItem;
-import com.willfp.eco.core.math.MathContext;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.core.placeholder.context.PlaceholderContextSupplier;
 import com.willfp.eco.core.price.impl.PriceEconomy;
 import com.willfp.eco.core.price.impl.PriceFree;
 import com.willfp.eco.core.price.impl.PriceItem;
@@ -13,7 +14,6 @@ import org.jetbrains.annotations.Nullable;
 
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
-import java.util.function.Function;
 
 /**
  * Class to manage prices.
@@ -48,7 +48,28 @@ public final class Prices {
     @NotNull
     public static Price create(@NotNull final String expression,
                                @Nullable final String priceName) {
-        return create(expression, priceName, MathContext.EMPTY);
+        return create(expression, priceName, PlaceholderContext.EMPTY);
+    }
+
+    /**
+     * Create price from an expression (representing the value),
+     * and a price name. Uses a context to parse the expression.
+     * <p>
+     * Supports items as price names.
+     *
+     * @param expression The expression for the value.
+     * @param priceName  The price name.
+     * @param context    The math context to parse the expression.
+     * @return The price, or free if invalid.
+     * @deprecated Use {@link #create(String, String, PlaceholderContext)} instead.
+     */
+    @NotNull
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @SuppressWarnings("removal")
+    public static Price create(@NotNull final String expression,
+                               @Nullable final String priceName,
+                               @NotNull final com.willfp.eco.core.math.MathContext context) {
+        return create(expression, priceName, context.toPlaceholderContext());
     }
 
     /**
@@ -65,8 +86,8 @@ public final class Prices {
     @NotNull
     public static Price create(@NotNull final String expression,
                                @Nullable final String priceName,
-                               @NotNull final MathContext context) {
-        Function<MathContext, Double> function = (ctx) -> NumberUtils.evaluateExpression(
+                               @NotNull final PlaceholderContext context) {
+        PlaceholderContextSupplier<Double> function = (ctx) -> NumberUtils.evaluateExpression(
                 expression,
                 ctx
         );

eco-api/src/main/java/com/willfp/eco/core/price/impl/PriceEconomy.java

@@ -1,7 +1,8 @@
 package com.willfp.eco.core.price.impl;
 
 import com.willfp.eco.core.integrations.economy.EconomyManager;
-import com.willfp.eco.core.math.MathContext;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.core.placeholder.context.PlaceholderContextSupplier;
 import com.willfp.eco.core.price.Price;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
@@ -18,12 +19,12 @@ public final class PriceEconomy implements Price {
     /**
      * The value of the price.
      */
-    private final Function<MathContext, Double> function;
+    private final PlaceholderContextSupplier<Double> function;
 
     /**
-     * The base math context.
+     * The base placeholder context.
      */
-    private final MathContext baseContext;
+    private final PlaceholderContext baseContext;
 
     /**
      * The multipliers.
@@ -36,7 +37,21 @@ public final class PriceEconomy implements Price {
      * @param value The value.
      */
     public PriceEconomy(final double value) {
-        this(MathContext.EMPTY, ctx -> value);
+        this(PlaceholderContext.EMPTY, (PlaceholderContext ctx) -> value);
+    }
+
+    /**
+     * Create a new economy-based price.
+     *
+     * @param baseContext The base context.
+     * @param function    The function.
+     * @deprecated Use {@link #PriceEconomy(PlaceholderContext, PlaceholderContextSupplier)} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @SuppressWarnings("removal")
+    public PriceEconomy(@NotNull final com.willfp.eco.core.math.MathContext baseContext,
+                        @NotNull final Function<com.willfp.eco.core.math.MathContext, Double> function) {
+        this(baseContext.toPlaceholderContext(), (PlaceholderContext ctx) -> function.apply(ctx.toMathContext()));
     }
 
     /**
@@ -45,8 +60,8 @@ public final class PriceEconomy implements Price {
      * @param baseContext The base context.
      * @param function    The function.
      */
-    public PriceEconomy(@NotNull final MathContext baseContext,
-                        @NotNull final Function<MathContext, Double> function) {
+    public PriceEconomy(@NotNull final PlaceholderContext baseContext,
+                        @NotNull final PlaceholderContextSupplier<Double> function) {
         this.baseContext = baseContext;
         this.function = function;
     }
@@ -72,7 +87,7 @@ public final class PriceEconomy implements Price {
     @Override
     public double getValue(@NotNull final Player player,
                            final double multiplier) {
-        return this.function.apply(MathContext.copyWithPlayer(baseContext, player)) * getMultiplier(player) * multiplier;
+        return this.function.get(baseContext.copyWithPlayer(player)) * getMultiplier(player) * multiplier;
     }
 
     @Override

eco-api/src/main/java/com/willfp/eco/core/price/impl/PriceItem.java

@@ -3,7 +3,8 @@ package com.willfp.eco.core.price.impl;
 import com.willfp.eco.core.drops.DropQueue;
 import com.willfp.eco.core.items.HashedItem;
 import com.willfp.eco.core.items.TestableItem;
-import com.willfp.eco.core.math.MathContext;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
+import com.willfp.eco.core.placeholder.context.PlaceholderContextSupplier;
 import com.willfp.eco.core.price.Price;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
@@ -20,14 +21,14 @@ import java.util.function.Function;
  */
 public final class PriceItem implements Price {
     /**
-     * The base MathContext.
+     * The base PlaceholderContext.
      */
-    private final MathContext baseContext;
+    private final PlaceholderContext baseContext;
 
     /**
      * The amount of items.
      */
-    private final Function<MathContext, Double> function;
+    private final PlaceholderContextSupplier<Double> function;
 
     /**
      * The item.
@@ -47,7 +48,23 @@ public final class PriceItem implements Price {
      */
     public PriceItem(final int amount,
                      @NotNull final TestableItem item) {
-        this(MathContext.EMPTY, ctx -> (double) amount, item);
+        this(PlaceholderContext.EMPTY, (PlaceholderContext ctx) -> (double) amount, item);
+    }
+
+    /**
+     * Create a new item-based price.
+     *
+     * @param baseContext The base MathContext.
+     * @param function    The function to get the amount of items to remove.
+     * @param item        The item.
+     * @deprecated Use {@link #PriceItem(PlaceholderContext, PlaceholderContextSupplier, TestableItem)} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @SuppressWarnings("removal")
+    public PriceItem(@NotNull final com.willfp.eco.core.math.MathContext baseContext,
+                     @NotNull final Function<com.willfp.eco.core.math.MathContext, Double> function,
+                     @NotNull final TestableItem item) {
+        this(baseContext.toPlaceholderContext(), (PlaceholderContext ctx) -> function.apply(ctx.toMathContext()), item);
     }
 
     /**
@@ -57,8 +74,8 @@ public final class PriceItem implements Price {
      * @param function    The function to get the amount of items to remove.
      * @param item        The item.
      */
-    public PriceItem(@NotNull final MathContext baseContext,
-                     @NotNull final Function<MathContext, Double> function,
+    public PriceItem(@NotNull final PlaceholderContext baseContext,
+                     @NotNull final PlaceholderContextSupplier<Double> function,
                      @NotNull final TestableItem item) {
         this.baseContext = baseContext;
         this.function = function;
@@ -137,7 +154,7 @@ public final class PriceItem implements Price {
     public double getValue(@NotNull final Player player,
                            final double multiplier) {
         return Math.toIntExact(Math.round(
-                this.function.apply(MathContext.copyWithPlayer(baseContext, player))
+                this.function.get(baseContext.copyWithPlayer(player))
                         * getMultiplier(player) * multiplier
         ));
     }

eco-api/src/main/java/com/willfp/eco/core/proxy/ProxyConstants.java

@@ -23,7 +23,8 @@ public final class ProxyConstants {
             "v1_18_R2",
             "v1_19_R1",
             "v1_19_R2",
-            "v1_19_R3"
+            "v1_19_R3",
+            "v1_20_R1"
     );
 
     private ProxyConstants() {

eco-api/src/main/java/com/willfp/eco/core/recipe/Recipes.java

@@ -9,7 +9,6 @@ import com.willfp.eco.core.items.Items;
 import com.willfp.eco.core.recipe.recipes.CraftingRecipe;
 import com.willfp.eco.core.recipe.recipes.ShapedCraftingRecipe;
 import com.willfp.eco.util.NamespacedKeyUtils;
-import org.bukkit.Bukkit;
 import org.bukkit.NamespacedKey;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -127,8 +126,8 @@ public final class Recipes {
         }
 
         if (builder.isAir()) {
-            Bukkit.getLogger().warning("RECIPE ERROR! " + plugin.getName() + ":" + key + " consists only");
-            Bukkit.getLogger().warning("of air or invalid items! Please change that or disable this recipe.");
+            plugin.getLogger().warning("Crafting recipe " + plugin.getID() + ":" + key + " consists only");
+            plugin.getLogger().warning("of air or invalid items! It will not be registered.");
             return null;
         }
 

eco-api/src/main/java/com/willfp/eco/core/registry/Registry.java

@@ -149,6 +149,10 @@ public class Registry<T extends Registrable> implements Iterable<T> {
      * @param locker The locker.
      */
     public void lock(@Nullable final Object locker) {
+        if (this.isLocked && this.locker != locker) {
+            throw new IllegalArgumentException("Registry is already locked with a different locker!");
+        }
+
         this.locker = locker;
         isLocked = true;
     }
@@ -162,6 +166,8 @@ public class Registry<T extends Registrable> implements Iterable<T> {
         if (this.locker != locker) {
             throw new IllegalArgumentException("Cannot unlock registry!");
         }
+
+        this.locker = null;
         isLocked = false;
     }
 

eco-api/src/main/java/com/willfp/eco/util/NumberUtils.java

@@ -1,10 +1,9 @@
 package com.willfp.eco.util;
 
 import com.willfp.eco.core.Eco;
-import com.willfp.eco.core.integrations.placeholder.PlaceholderManager;
-import com.willfp.eco.core.math.MathContext;
 import com.willfp.eco.core.placeholder.AdditionalPlayer;
 import com.willfp.eco.core.placeholder.PlaceholderInjectable;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -13,6 +12,7 @@ import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Map;
+import java.util.Objects;
 import java.util.TreeMap;
 import java.util.concurrent.ThreadLocalRandom;
 
@@ -210,7 +210,7 @@ public final class NumberUtils {
      * @return The value of the expression, or zero if invalid.
      */
     public static double evaluateExpression(@NotNull final String expression) {
-        return evaluateExpression(expression, MathContext.EMPTY);
+        return evaluateExpression(expression, PlaceholderContext.EMPTY);
     }
 
     /**
@@ -222,7 +222,7 @@ public final class NumberUtils {
      */
     public static double evaluateExpression(@NotNull final String expression,
                                             @Nullable final Player player) {
-        return evaluateExpression(expression, player, PlaceholderManager.EMPTY_INJECTABLE);
+        return evaluateExpression(expression, player, null);
     }
 
     /**
@@ -230,12 +230,12 @@ public final class NumberUtils {
      *
      * @param expression The expression.
      * @param player     The player.
-     * @param context    The injectable placeholders.
+     * @param context    The injectableContext placeholders.
      * @return The value of the expression, or zero if invalid.
      */
     public static double evaluateExpression(@NotNull final String expression,
                                             @Nullable final Player player,
-                                            @NotNull final PlaceholderInjectable context) {
+                                            @Nullable final PlaceholderInjectable context) {
         return evaluateExpression(expression, player, context, new ArrayList<>());
     }
 
@@ -244,30 +244,65 @@ public final class NumberUtils {
      *
      * @param expression        The expression.
      * @param player            The player.
-     * @param context           The injectable placeholders.
+     * @param context           The injectableContext placeholders.
      * @param additionalPlayers Additional players to parse placeholders for.
      * @return The value of the expression, or zero if invalid.
      */
     public static double evaluateExpression(@NotNull final String expression,
                                             @Nullable final Player player,
-                                            @NotNull final PlaceholderInjectable context,
+                                            @Nullable final PlaceholderInjectable context,
                                             @NotNull final Collection<AdditionalPlayer> additionalPlayers) {
-        return Eco.get().evaluate(expression, new MathContext(
-                context,
-                player,
-                additionalPlayers
-        ));
+        return evaluateExpression(
+                expression,
+                new PlaceholderContext(
+                        player,
+                        null,
+                        context,
+                        additionalPlayers
+                )
+        );
     }
 
     /**
-     * Evaluate an expression with respect to a player (for placeholders).
+     * Evaluate an expression in a context.
      *
      * @param expression The expression.
-     * @param context    The math context.
+     * @param context    The context.
+     * @return The value of the expression, or zero if invalid.
+     * @deprecated Use {@link #evaluateExpression(String, PlaceholderContext)} instead.
+     */
+    @Deprecated(since = "6.56.0", forRemoval = true)
+    @SuppressWarnings({"removal", "DeprecatedIsStillUsed"})
+    public static double evaluateExpression(@NotNull final String expression,
+                                            @NotNull final com.willfp.eco.core.math.MathContext context) {
+        return evaluateExpression(expression, context.toPlaceholderContext());
+    }
+
+    /**
+     * Evaluate an expression in a context.
+     *
+     * @param expression The expression.
+     * @param context    The context.
      * @return The value of the expression, or zero if invalid.
      */
     public static double evaluateExpression(@NotNull final String expression,
-                                            @NotNull final MathContext context) {
+                                            @NotNull final PlaceholderContext context) {
+        return Objects.requireNonNullElse(
+                evaluateExpressionOrNull(expression, context),
+                0.0
+        );
+    }
+
+    /**
+     * Evaluate an expression in a context.
+     *
+     * @param expression The expression.
+     * @param context    The context.
+     * @return The value of the expression, or zero if invalid.
+     */
+    @Nullable
+    public static Double evaluateExpressionOrNull(@NotNull final String expression,
+                                                  @NotNull final PlaceholderContext context) {
         return Eco.get().evaluate(expression, context);
     }
 

eco-api/src/main/java/com/willfp/eco/util/PatternUtils.java

@@ -0,0 +1,35 @@
+package com.willfp.eco.util;
+
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.concurrent.TimeUnit;
+import java.util.regex.Pattern;
+
+/**
+ * Utilities / API methods for patterns.
+ */
+public final class PatternUtils {
+    /**
+     * Cache of compiled literal patterns.
+     */
+    private static final Cache<String, Pattern> LITERAL_PATTERN_CACHE = Caffeine.newBuilder()
+            .expireAfterAccess(1, TimeUnit.MINUTES)
+            .build();
+
+    /**
+     * Compile a literal pattern.
+     *
+     * @param pattern The pattern.
+     * @return The compiled pattern.
+     */
+    @NotNull
+    public static Pattern compileLiteral(@NotNull final String pattern) {
+        return LITERAL_PATTERN_CACHE.get(pattern, (it) -> Pattern.compile(it, Pattern.LITERAL));
+    }
+
+    private PatternUtils() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
+}

eco-api/src/main/java/com/willfp/eco/util/StringUtils.java

@@ -8,7 +8,10 @@ import com.google.common.collect.ImmutableMap;
 import com.google.gson.JsonSyntaxException;
 import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.integrations.placeholder.PlaceholderManager;
+import com.willfp.eco.core.placeholder.context.PlaceholderContext;
 import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.JoinConfiguration;
+import net.kyori.adventure.text.TextComponent;
 import net.kyori.adventure.text.format.TextDecoration;
 import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
 import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
@@ -200,6 +203,26 @@ public final class StringUtils {
         return translated;
     }
 
+    /**
+     * Format a list of strings.
+     * <p>
+     * Coverts color codes and placeholders.
+     *
+     * @param list    The messages to format.
+     * @param context The context.
+     * @return The message, format.
+     */
+    @NotNull
+    public static List<String> formatList(@NotNull final List<String> list,
+                                          @NotNull PlaceholderContext context) {
+        List<String> translated = new ArrayList<>();
+        for (String string : list) {
+            translated.add(format(string, context));
+        }
+
+        return translated;
+    }
+
     /**
      * Format a string.
      * <p>
@@ -242,7 +265,7 @@ public final class StringUtils {
     @NotNull
     public static String format(@NotNull final String message,
                                 @NotNull final FormatOption option) {
-        return format(message, null, option);
+        return format(message, (Player) null, option);
     }
 
     /**
@@ -287,7 +310,7 @@ public final class StringUtils {
     @NotNull
     public static Component formatToComponent(@NotNull final String message,
                                               @NotNull final FormatOption option) {
-        return formatToComponent(message, null, option);
+        return formatToComponent(message, (Player) null, option);
     }
 
     /**
@@ -321,10 +344,49 @@ public final class StringUtils {
     public static String format(@NotNull final String message,
                                 @Nullable final Player player,
                                 @NotNull final FormatOption option) {
-        String processedMessage = message;
         if (option == FormatOption.WITH_PLACEHOLDERS) {
-            processedMessage = PlaceholderManager.translatePlaceholders(processedMessage, player);
+            return format(
+                    message,
+                    new PlaceholderContext(player)
+            );
         }
+
+        return STRING_FORMAT_CACHE.get(message);
+    }
+
+    /**
+     * Format a string to a component.
+     * <p>
+     * Converts color codes and placeholders if specified.
+     *
+     * @param message The message to translate.
+     * @param context The placeholder context.
+     * @return The message, formatted, as a component.
+     * @see StringUtils#format(String, Player)
+     */
+    @NotNull
+    public static Component formatToComponent(@NotNull final String message,
+                                              @NotNull final PlaceholderContext context) {
+        return toComponent(format(message, context));
+    }
+
+    /**
+     * Format a string.
+     * <p>
+     * Coverts color codes and placeholders if specified.
+     *
+     * @param message The message to format.
+     * @param context The context to translate placeholders with respect to.
+     * @return The message, formatted.
+     */
+    @NotNull
+    public static String format(@NotNull final String message,
+                                @NotNull final PlaceholderContext context) {
+        String processedMessage = message;
+        processedMessage = PlaceholderManager.translatePlaceholders(
+                processedMessage,
+                context
+        );
         return STRING_FORMAT_CACHE.get(processedMessage);
     }
 
@@ -674,6 +736,177 @@ public final class StringUtils {
         return builder.toString();
     }
 
+    /**
+     * Fast implementation of {@link String#replace(CharSequence, CharSequence)}
+     *
+     * @param input       The input string.
+     * @param target      The target string.
+     * @param replacement The replacement string.
+     * @return The replaced string.
+     */
+    @NotNull
+    public static String replaceQuickly(@NotNull final String input,
+                                        @NotNull final String target,
+                                        @NotNull final String replacement) {
+        int targetLength = target.length();
+
+        // Count the number of original occurrences
+        int count = 0;
+        for (
+                int index = input.indexOf(target);
+                index != -1;
+                index = input.indexOf(target, index + targetLength)
+        ) {
+            count++;
+        }
+
+        if (count == 0) {
+            return input;
+        }
+
+        int replacementLength = replacement.length();
+        int inputLength = input.length();
+
+        // Pre-calculate the final size of the StringBuilder
+        int newSize = inputLength + (replacementLength - targetLength) * count;
+        StringBuilder result = new StringBuilder(newSize);
+
+        int start = 0;
+        for (
+                int index = input.indexOf(target);
+                index != -1;
+                index = input.indexOf(target, start)
+        ) {
+            result.append(input, start, index);
+            result.append(replacement);
+            start = index + targetLength;
+        }
+
+        result.append(input, start, inputLength);
+        return result.toString();
+    }
+
+    /**
+     * Line wrap a list of strings while preserving formatting.
+     *
+     * @param input      The input list.
+     * @param lineLength The length of each line.
+     * @return The wrapped list.
+     */
+    @NotNull
+    public static List<String> lineWrap(@NotNull final List<String> input,
+                                        final int lineLength) {
+        return lineWrap(input, lineLength, true);
+    }
+
+    /**
+     * Line wrap a list of strings while preserving formatting.
+     *
+     * @param input          The input list.
+     * @param lineLength     The length of each line.
+     * @param preserveMargin If the string has a margin, add it to the next line.
+     * @return The wrapped list.
+     */
+    @NotNull
+    public static List<String> lineWrap(@NotNull final List<String> input,
+                                        final int lineLength,
+                                        final boolean preserveMargin) {
+        return input.stream()
+                .flatMap(line -> lineWrap(line, lineLength, preserveMargin).stream())
+                .toList();
+    }
+
+    /**
+     * Line wrap a string while preserving formatting.
+     *
+     * @param input      The input list.
+     * @param lineLength The length of each line.
+     * @return The wrapped list.
+     */
+    @NotNull
+    public static List<String> lineWrap(@NotNull final String input,
+                                        final int lineLength) {
+        return lineWrap(input, lineLength, true);
+    }
+
+    /**
+     * Line wrap a string while preserving formatting.
+     *
+     * @param input          The input string.
+     * @param lineLength     The length of each line.
+     * @param preserveMargin If the string has a margin, add it to the start of each line.
+     * @return The wrapped string.
+     */
+    @NotNull
+    public static List<String> lineWrap(@NotNull final String input,
+                                        final int lineLength,
+                                        final boolean preserveMargin) {
+        int margin = preserveMargin ? getMargin(input) : 0;
+        TextComponent space = Component.text(" ");
+
+        Component asComponent = toComponent(input);
+
+        // The component contains the text as its children, so the child components
+        // are accessed like this:
+        List<TextComponent> children = new ArrayList<>();
+
+        if (asComponent instanceof TextComponent) {
+            children.add((TextComponent) asComponent);
+        }
+
+        for (Component child : asComponent.children()) {
+            children.add((TextComponent) child);
+        }
+
+        // Start by splitting the component into individual characters.
+        List<TextComponent> letters = new ArrayList<>();
+        for (TextComponent child : children) {
+            for (char c : child.content().toCharArray()) {
+                letters.add(Component.text(c).mergeStyle(child));
+            }
+        }
+
+        List<Component> lines = new ArrayList<>();
+        List<TextComponent> currentLine = new ArrayList<>();
+        boolean isFirstLine = true;
+
+        for (TextComponent letter : letters) {
+            if (currentLine.size() > lineLength && letter.content().isBlank()) {
+                lines.add(Component.join(JoinConfiguration.noSeparators(), currentLine));
+                currentLine.clear();
+                isFirstLine = false;
+            } else {
+                // Add margin if starting a new line.
+                if (currentLine.isEmpty() && !isFirstLine) {
+                    if (preserveMargin) {
+                        for (int i = 0; i < margin; i++) {
+                            currentLine.add(space);
+                        }
+                    }
+                }
+
+                currentLine.add(letter);
+            }
+        }
+
+        // Push last line.
+        lines.add(Component.join(JoinConfiguration.noSeparators(), currentLine));
+
+        // Convert back to legacy strings.
+        return lines.stream().map(StringUtils::toLegacy)
+                .collect(Collectors.toList());
+    }
+
+    /**
+     * Get a string's margin.
+     *
+     * @param input The input string.
+     * @return The margin.
+     */
+    public static int getMargin(@NotNull final String input) {
+        return input.indexOf(input.trim());
+    }
+
     /**
      * Options for formatting.
      */

eco-api/src/main/kotlin/com/willfp/eco/core/map/DefaultMap.kt

@@ -8,7 +8,7 @@ package com.willfp.eco.core.map
  * @see ListMap
  */
 @Suppress("RedundantOverride")
-class MutableListMap<K : Any, V : Any> : ListMap<K, V>() {
+class MutableListMap<K : Any, V> : ListMap<K, V>() {
     /**
      * Override with enforced MutableList type.
      */
@@ -18,7 +18,7 @@ class MutableListMap<K : Any, V : Any> : ListMap<K, V>() {
     /**
      * Override with enforced MutableList type.
      */
-    override fun getOrDefault(key: K, defaultValue: MutableList<V>?): MutableList<V> {
+    override fun getOrDefault(key: K, defaultValue: MutableList<V>): MutableList<V> {
         return super.getOrDefault(key, defaultValue)
     }
 }
@@ -29,6 +29,12 @@ class MutableListMap<K : Any, V : Any> : ListMap<K, V>() {
 fun <K : Any, V : Any> defaultMap(defaultValue: V) =
     DefaultMap<K, V>(defaultValue)
 
+/**
+ * @see DefaultMap
+ */
+fun <K : Any, V : Any> defaultMap(defaultValue: () -> V) =
+    DefaultMap<K, V>(defaultValue())
+
 /**
  * @see ListMap
  */
@@ -38,11 +44,13 @@ fun <K : Any, V : Any> listMap() =
 /**
  * @see DefaultMap.createNestedMap
  */
-fun <K : Any, K1 : Any, V : Any> nestedMap() =
+fun <K : Any, K1 : Any, V> nestedMap() =
     DefaultMap.createNestedMap<K, K1, V>()
 
 /**
  * @see DefaultMap.createNestedListMap
  */
-fun <K : Any, K1 : Any, V : Any> nestedListMap() =
-    DefaultMap<K, MutableListMap<K1, V>>(MutableListMap())
+fun <K : Any, K1 : Any, V> nestedListMap() =
+    DefaultMap<K, MutableListMap<K1, V>>() {
+        MutableListMap()
+    }

eco-api/src/main/kotlin/com/willfp/eco/core/placeholder/Placeholder.kt

@@ -0,0 +1,14 @@
+@file:JvmName("PlaceholderExtensions")
+
+package com.willfp.eco.core.placeholder
+
+import com.willfp.eco.core.integrations.placeholder.PlaceholderManager
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+
+/** @see PlaceholderManager.translatePlaceholders */
+fun String.translatePlaceholders(context: PlaceholderContext) =
+    PlaceholderManager.translatePlaceholders(this, context)
+
+/** @see PlaceholderManager.findPlaceholdersIn */
+fun String.findPlaceholders(): List<String> =
+    PlaceholderManager.findPlaceholdersIn(this)

eco-api/src/main/kotlin/com/willfp/eco/core/placeholder/context/PlaceholderContext.kt

@@ -0,0 +1,25 @@
+@file:JvmName("PlaceholderContextExtensions")
+
+package com.willfp.eco.core.placeholder.context
+
+import com.willfp.eco.core.placeholder.AdditionalPlayer
+import com.willfp.eco.core.placeholder.PlaceholderInjectable
+import org.bukkit.entity.Player
+import org.bukkit.inventory.ItemStack
+
+/** @see PlaceholderContext */
+@JvmOverloads
+fun placeholderContext(
+    player: Player? = null,
+    item: ItemStack? = null,
+    injectable: PlaceholderInjectable? = null,
+    additionalPlayers: Collection<AdditionalPlayer> = emptyList()
+): PlaceholderContext = PlaceholderContext(player, item, injectable, additionalPlayers)
+
+/** @see PlaceholderContext */
+fun PlaceholderContext.copy(
+    player: Player? = this.player,
+    item: ItemStack? = this.itemStack,
+    injectable: PlaceholderInjectable? = this.injectableContext,
+    additionalPlayers: Collection<AdditionalPlayer> = this.additionalPlayers
+): PlaceholderContext = PlaceholderContext(player, item, injectable, additionalPlayers)

eco-api/src/main/kotlin/com/willfp/eco/util/ListUtils.kt

@@ -15,5 +15,5 @@ fun <T> create2DList(rows: Int, columns: Int): MutableList<MutableList<T>> =
     ListUtils.create2DList(rows, columns)
 
 /** @see ListUtils.toSingletonList */
-fun <T> T.toSingletonList(): List<T> =
+fun <T> T?.toSingletonList(): List<T> =
     ListUtils.toSingletonList(this)

eco-api/src/main/kotlin/com/willfp/eco/util/NumberUtils.kt

@@ -2,6 +2,36 @@
 
 package com.willfp.eco.util
 
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+
 /** @see NumberUtils.toNumeral */
 fun Number.toNumeral(): String =
     NumberUtils.toNumeral(this.toInt())
+
+/** @see NumberUtils.fromNumeral */
+fun String.parseNumeral(): Int =
+    NumberUtils.fromNumeral(this)
+
+/** @see NumberUtils.randInt */
+fun randInt(min: Int, max: Int) =
+    NumberUtils.randInt(min, max)
+
+/** @see NumberUtils.randFloat */
+fun randDouble(min: Double, max: Double) =
+    NumberUtils.randFloat(min, max)
+
+/** @see NumberUtils.randFloat */
+fun randFloat(min: Float, max: Float) =
+    NumberUtils.randFloat(min.toDouble(), max.toDouble()).toFloat()
+
+/** @see NumberUtils.evaluateExpression */
+fun evaluateExpression(expression: String) =
+    NumberUtils.evaluateExpression(expression)
+
+/** @see NumberUtils.evaluateExpression */
+fun evaluateExpression(expression: String, context: PlaceholderContext) =
+    NumberUtils.evaluateExpression(expression, context)
+
+/** @see NumberUtils.evaluateExpressionOrNull */
+fun evaluateExpressionOrNull(expression: String, context: PlaceholderContext) =
+    NumberUtils.evaluateExpressionOrNull(expression, context)

eco-api/src/main/kotlin/com/willfp/eco/util/StringUtils.kt

@@ -2,6 +2,7 @@
 
 package com.willfp.eco.util
 
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
 import net.kyori.adventure.text.Component
 import org.bukkit.entity.Player
 
@@ -31,6 +32,14 @@ fun String.formatEco(
     if (formatPlaceholders) StringUtils.FormatOption.WITH_PLACEHOLDERS else StringUtils.FormatOption.WITHOUT_PLACEHOLDERS
 )
 
+/** @see StringUtils.format */
+fun String.formatEco(
+    context: PlaceholderContext
+) = StringUtils.format(
+    this,
+    context
+)
+
 /** @see StringUtils.formatList */
 fun List<String>.formatEco(
     player: Player? = null,
@@ -41,6 +50,14 @@ fun List<String>.formatEco(
     if (formatPlaceholders) StringUtils.FormatOption.WITH_PLACEHOLDERS else StringUtils.FormatOption.WITHOUT_PLACEHOLDERS
 )
 
+/** @see StringUtils.formatList */
+fun List<String>.formatEco(
+    context: PlaceholderContext
+): List<String> = StringUtils.formatList(
+    this,
+    context
+)
+
 /** @see StringUtils.splitAround */
 fun String.splitAround(separator: String): Array<String> =
     StringUtils.splitAround(this, separator)
@@ -48,3 +65,19 @@ fun String.splitAround(separator: String): Array<String> =
 /** @see StringUtils.toNiceString */
 fun Any?.toNiceString(): String =
     StringUtils.toNiceString(this)
+
+/** @see StringUtils.replaceQuickly */
+fun String.replaceQuickly(target: String, replacement: String): String =
+    StringUtils.replaceQuickly(this, target, replacement)
+
+/** @see StringUtils.lineWrap */
+fun String.lineWrap(width: Int, preserveMargin: Boolean = true): List<String> =
+    StringUtils.lineWrap(this, width, preserveMargin)
+
+/** @see StringUtils.lineWrap */
+fun List<String>.lineWrap(width: Int, preserveMargin: Boolean = true): List<String> =
+    StringUtils.lineWrap(this, width, preserveMargin)
+
+/** @see StringUtils.getMargin */
+val String.margin: Int
+    get() = StringUtils.getMargin(this)

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/command/DelegatedBukkitCommand.kt

@@ -8,10 +8,12 @@ import org.bukkit.command.TabCompleter
 
 class DelegatedBukkitCommand(
     private val delegate: EcoPluginCommand
-) : Command(delegate.name), TabCompleter, PluginIdentifiableCommand {
-    private var _aliases: List<String>? = null
-    private var _description: String? = null
-
+) : Command(
+    delegate.name,
+    delegate.description ?: "",
+    "/${delegate.name}",
+    delegate.aliases
+), TabCompleter, PluginIdentifiableCommand {
     override fun execute(sender: CommandSender, label: String, args: Array<out String>?): Boolean {
         return delegate.onCommand(sender, this, label, args)
     }
@@ -36,16 +38,4 @@ class DelegatedBukkitCommand(
 
     override fun getPlugin() = delegate.plugin
     override fun getPermission() = delegate.permission
-    override fun getDescription() = _description ?: delegate.description ?: ""
-    override fun getAliases(): List<String> = _aliases ?: delegate.aliases
-
-    override fun setDescription(description: String): Command {
-        this._description = description
-        return this
-    }
-
-    override fun setAliases(aliases: List<String>): Command {
-        this._aliases = aliases
-        return this
-    }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/command/EcoPluginCommand.kt

@@ -7,7 +7,7 @@ import com.willfp.eco.core.command.PluginCommandBase
 import org.bukkit.Bukkit
 
 class EcoPluginCommand(
-    parentDelegate: CommandBase,
+    private val parentDelegate: PluginCommandBase,
     plugin: EcoPlugin,
     name: String,
     permission: String,
@@ -39,6 +39,9 @@ class EcoPluginCommand(
 
         Eco.get().syncCommands()
     }
+
+    override fun getAliases(): List<String> = parentDelegate.aliases
+    override fun getDescription(): String? = parentDelegate.description
 }
 
 class EcoSubcommand(

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/ConfigUtils.kt

@@ -30,6 +30,8 @@ internal fun Any?.constrainConfigTypes(type: ConfigType): Any? = when (this) {
             this.toMutableList()
         }
     }
+
+    is Float -> this.toDouble() // Should prevent !!float from being written
     else -> this
 }
 

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/EcoConfig.kt

@@ -3,7 +3,8 @@ package com.willfp.eco.internal.config
 import com.willfp.eco.core.config.ConfigType
 import com.willfp.eco.core.config.interfaces.Config
 import com.willfp.eco.core.placeholder.InjectablePlaceholder
-import com.willfp.eco.core.placeholder.StaticPlaceholder
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+import com.willfp.eco.internal.fast.listView
 import com.willfp.eco.util.StringUtils
 import org.bukkit.configuration.file.YamlConfiguration
 import java.util.concurrent.ConcurrentHashMap
@@ -141,9 +142,7 @@ open class EcoConfig(
         var string = get(path)?.toString() ?: return null
         if (format && option == StringUtils.FormatOption.WITH_PLACEHOLDERS) {
             for (injection in placeholderInjections) {
-                if (injection is StaticPlaceholder) {
-                    string = string.replace("%${injection.identifier}%", injection.value)
-                }
+                string = injection.tryTranslateQuickly(string, PlaceholderContext.EMPTY)
             }
         }
         return if (format) StringUtils.format(string, option) else string
@@ -161,9 +160,7 @@ open class EcoConfig(
             strings.replaceAll {
                 var string = it
                 for (injection in placeholderInjections) {
-                    if (injection is StaticPlaceholder) {
-                        string = string.replace("%${injection.identifier}%", injection.value)
-                    }
+                    string = injection.tryTranslateQuickly(string, PlaceholderContext.EMPTY)
                 }
                 string
             }
@@ -181,12 +178,12 @@ open class EcoConfig(
 
     override fun addInjectablePlaceholder(placeholders: Iterable<InjectablePlaceholder>) {
         for (placeholder in placeholders) {
-            injections[placeholder.identifier] = placeholder
+            injections[placeholder.pattern.pattern()] = placeholder
         }
     }
 
     override fun getPlaceholderInjections(): List<InjectablePlaceholder> {
-        return injections.values.toList()
+        return injections.values.listView() // Faster than .toList()
     }
 
     override fun clearInjectedPlaceholders() {
@@ -209,14 +206,6 @@ open class EcoConfig(
         return bukkit
     }
 
-    override fun clone(): Config {
-        return EcoConfigSection(type, this.values.toMutableMap(), injections)
-    }
-
-    override fun toString(): String {
-        return this.toPlaintext()
-    }
-
     private inline fun <reified T> getList(path: String): List<T>? {
         val asIterable = get(path) as? Iterable<*> ?: return null
         val asList = asIterable.toList()
@@ -227,4 +216,44 @@ open class EcoConfig(
 
         return asList as List<T>
     }
+
+    override fun clone(): Config {
+        return EcoConfigSection(type, this.values.toMutableMap(), injections)
+    }
+
+    override fun toString(): String {
+        return this.toPlaintext()
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) {
+            return true
+        }
+
+        if (other !is EcoConfig) {
+            return false
+        }
+
+        // Hey! Don't care. This works.
+        return this.hashCode() == other.hashCode()
+    }
+
+    override fun hashCode(): Int {
+        /*
+        The keys are completely redundant, as they are only used to prevent
+        duplicate keys in the map. Therefore, we can ignore them and just
+        hash the actual placeholder values.
+         */
+
+        var injectionHash = 0
+
+        injections.forEachValue(5) {
+            injectionHash = injectionHash xor (it.hashCode() shl 5)
+        }
+
+        // hashCode() has to compute extremely quickly, so we're using bitwise, because why not?
+        // Fucking filthy to use identityHashCode here, but it should be extremely fast
+        val identityHash = System.identityHashCode(this)
+        return (identityHash shl 5) - (identityHash xor configType.hashCode()) + injectionHash
+    }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/EcoConfigSection.kt

@@ -7,7 +7,7 @@ import java.util.concurrent.ConcurrentHashMap
 class EcoConfigSection(
     type: ConfigType,
     values: Map<String, Any?> = emptyMap(),
-    injections: MutableMap<String, InjectablePlaceholder> = mutableMapOf()
+    injections: Map<String, InjectablePlaceholder> = emptyMap()
 ) : EcoConfig(type) {
     init {
         this.init(values)

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/config/EcoRepresenter.kt

@@ -1,12 +1,12 @@
 package com.willfp.eco.internal.config
 
 import com.willfp.eco.core.config.interfaces.Config
+import org.yaml.snakeyaml.DumperOptions
 import org.yaml.snakeyaml.nodes.Node
 import org.yaml.snakeyaml.representer.Represent
 import org.yaml.snakeyaml.representer.Representer
 
-@Suppress("DEPRECATION")
-class EcoRepresenter : Representer() {
+class EcoRepresenter : Representer(DumperOptions()) {
     init {
         multiRepresenters[Config::class.java] = RepresentConfig(multiRepresenters[Map::class.java]!!)
     }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/events/EcoEventManager.kt

@@ -20,7 +20,15 @@ private val listeners = mutableMapOf<PacketPriority, MutableList<RegisteredPacke
 fun PacketEvent.handleSend() {
     for (priority in PacketPriority.values()) {
         for (listener in listeners[priority] ?: continue) {
-            listener.listener.onSend(this)
+            try {
+                listener.listener.onSend(this)
+            } catch (e: Exception) {
+                listener.plugin.logger.warning(
+                    "Exception in packet listener ${listener.listener.javaClass.name}" +
+                            " for packet ${packet.handle.javaClass.name}!"
+                )
+                e.printStackTrace()
+            }
         }
     }
 }
@@ -28,7 +36,15 @@ fun PacketEvent.handleSend() {
 fun PacketEvent.handleReceive() {
     for (priority in PacketPriority.values()) {
         for (listener in listeners[priority] ?: continue) {
-            listener.listener.onReceive(this)
+            try {
+                listener.listener.onReceive(this)
+            } catch (e: Exception) {
+                listener.plugin.logger.warning(
+                    "Exception in packet listener ${listener.listener.javaClass.name}" +
+                            " for packet ${packet.handle.javaClass.name}!"
+                )
+                e.printStackTrace()
+            }
         }
     }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/extensions/EcoExtensionLoader.kt

@@ -5,9 +5,11 @@ import com.willfp.eco.core.Eco
 import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.config.toConfig
 import com.willfp.eco.core.extensions.Extension
+import com.willfp.eco.core.extensions.ExtensionLoadException
 import com.willfp.eco.core.extensions.ExtensionLoader
 import com.willfp.eco.core.extensions.ExtensionMetadata
 import com.willfp.eco.core.extensions.MalformedExtensionException
+import com.willfp.eco.core.version.Version
 import org.bukkit.configuration.file.YamlConfiguration
 import java.io.File
 import java.io.InputStreamReader
@@ -32,7 +34,7 @@ class EcoExtensionLoader(
             }
 
             runCatching { loadExtension(extensionJar) }.onFailure {
-                this.plugin.logger.warning(extensionJar.name + " caused an error!")
+                this.plugin.logger.warning(extensionJar.name + " caused an error: ${it.message ?: "Unknown error"}")
                 if (Eco.get().ecoPlugin.configYml.getBool("log-full-extension-errors")) {
                     it.printStackTrace()
                 }
@@ -54,7 +56,12 @@ class EcoExtensionLoader(
         var name = extensionYml.getStringOrNull("name")
         var version = extensionYml.getStringOrNull("version")
         var author = extensionYml.getStringOrNull("author")
+        val pluginVersion = Version(extensionYml.getStringOrNull("plugin-version") ?: "0.0.0")
+        val pluginName = extensionYml.getStringOrNull("plugin")
 
+        if (pluginName != null && !pluginName.equals(this.plugin.description.name, ignoreCase = true)) {
+            throw ExtensionLoadException("${extensionJar.name} is only compatible with $pluginName!")
+        }
 
         if (mainClass == null) {
             throw MalformedExtensionException("Invalid extension.yml found in " + extensionJar.name)
@@ -75,7 +82,11 @@ class EcoExtensionLoader(
             author = "Unnamed Author"
         }
 
-        val metadata = ExtensionMetadata(version, name, author)
+        if (Version(this.plugin.description.version) < pluginVersion) {
+            throw ExtensionLoadException("Plugin version is too low for ${extensionJar.name}!")
+        }
+
+        val metadata = ExtensionMetadata(version, name, author, extensionJar, pluginVersion)
 
         val cls: Class<*> = classLoader.loadClass(mainClass)
         val extension: Extension = cls.getConstructor(EcoPlugin::class.java).newInstance(this.plugin) as Extension
@@ -85,7 +96,7 @@ class EcoExtensionLoader(
         extensions[extension] = classLoader
     }
 
-    override fun getLoadedExtensions(): MutableSet<Extension> {
+    override fun getLoadedExtensions(): Set<Extension> {
         return ImmutableSet.copyOf(extensions.keys)
     }
 
@@ -97,4 +108,4 @@ class EcoExtensionLoader(
 
         extensions.clear()
     }
-}
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/fast/ListViewOfCollection.kt

@@ -0,0 +1,48 @@
+package com.willfp.eco.internal.fast
+
+class ListViewOfCollection<T>(private val collection: Collection<T>) : List<T> {
+    /*
+    The backing list is lazy-loaded because it provides a performance hit
+    to copy the contents of the contents of the collection into a list.
+
+    Since the only required operator for most use-cases is .iterator(),
+    we can just use the collection's iterator.
+     */
+
+    private val backingList: List<T> by lazy { collection.toList() }
+
+    override val size: Int
+        get() = collection.size
+
+    override fun containsAll(elements: Collection<T>) =
+        collection.containsAll(elements)
+
+    override fun get(index: Int): T =
+        backingList[index]
+
+    override fun indexOf(element: T): Int = backingList.indexOf(element)
+
+    override fun contains(element: T): Boolean = collection.contains(element)
+
+    override fun isEmpty() =
+        collection.isEmpty()
+
+    override fun iterator() =
+        collection.iterator()
+
+    override fun listIterator() =
+        backingList.listIterator()
+
+    override fun listIterator(index: Int) =
+        backingList.listIterator(index)
+
+    override fun subList(fromIndex: Int, toIndex: Int) =
+        backingList.subList(fromIndex, toIndex)
+
+    override fun lastIndexOf(element: T) =
+        backingList.lastIndexOf(element)
+}
+
+inline fun <reified T> Collection<T>.listView(): List<T> {
+    return ListViewOfCollection(this)
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/gui/slot/EcoSlot.kt

@@ -34,4 +34,6 @@ open class EcoSlot(
     }
 
     override fun getActionableSlot(player: Player, menu: Menu): EcoSlot = this
+
+    override fun shouldRenderOnClick() = handlers.values.any { it.isNotEmpty() }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/gui/slot/EcoSlotBuilder.kt

@@ -6,6 +6,7 @@ import com.willfp.eco.core.gui.slot.functional.CaptiveFilter
 import com.willfp.eco.core.gui.slot.functional.SlotHandler
 import com.willfp.eco.core.gui.slot.functional.SlotProvider
 import com.willfp.eco.core.gui.slot.functional.SlotUpdater
+import com.willfp.eco.core.map.listMap
 import org.bukkit.entity.Player
 import org.bukkit.event.inventory.ClickType
 import java.util.function.Predicate
@@ -15,14 +16,14 @@ class EcoSlotBuilder(private val provider: SlotProvider) : SlotBuilder {
     private var captiveFromEmpty = false
     private var updater: SlotUpdater = SlotUpdater { player, menu, _ -> provider.provide(player, menu) }
 
-    private val handlers = mutableMapOf<ClickType, MutableList<SlotHandler>>()
+    private val handlers = listMap<ClickType, SlotHandler>()
 
     private var captiveFilter =
         CaptiveFilter { _, _, _ -> true }
     private var notCaptiveFor: (Player) -> Boolean = { _ -> false}
 
     override fun onClick(type: ClickType, action: SlotHandler): SlotBuilder {
-        handlers.computeIfAbsent(type) { mutableListOf() } += action
+        handlers[type] += action
         return this
     }
 

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/integrations/PAPIExpansion.kt

@@ -2,6 +2,7 @@ package com.willfp.eco.internal.integrations
 
 import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.integrations.placeholder.PlaceholderManager
+import com.willfp.eco.core.placeholder.context.placeholderContext
 import me.clip.placeholderapi.expansion.PlaceholderExpansion
 import org.bukkit.entity.Player
 
@@ -33,7 +34,19 @@ class PAPIExpansion(private val plugin: EcoPlugin) : PlaceholderExpansion() {
     override fun onPlaceholderRequest(
         player: Player?,
         identifier: String
-    ): String {
-        return PlaceholderManager.getResult(player, identifier, plugin)
+    ): String? {
+        return PlaceholderManager.getResult(
+            plugin,
+            identifier,
+            placeholderContext(
+                player = player,
+                item = player?.inventory?.itemInMainHand
+            )
+        )
+    }
+
+    override fun getPlaceholders(): List<String> {
+        return PlaceholderManager.getRegisteredPlaceholders(plugin)
+            .map { "%${this.plugin.name.lowercase()}_${it.pattern.pattern()}%" }
     }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/items/ArgParserHead.kt

@@ -0,0 +1,53 @@
+package com.willfp.eco.internal.items
+
+import com.willfp.eco.core.items.args.LookupArgParser
+import org.bukkit.Bukkit
+import org.bukkit.inventory.ItemStack
+import org.bukkit.inventory.meta.ItemMeta
+import org.bukkit.inventory.meta.SkullMeta
+import java.util.function.Predicate
+
+object ArgParserHead : LookupArgParser {
+    override fun parseArguments(args: Array<out String>, meta: ItemMeta): Predicate<ItemStack>? {
+        if (meta !is SkullMeta) {
+            return null
+        }
+
+        var playerName: String? = null
+
+        for (arg in args) {
+            val argSplit = arg.split(":")
+            if (!argSplit[0].equals("head", ignoreCase = true)) {
+                continue
+            }
+            if (argSplit.size < 2) {
+                continue
+            }
+            playerName = argSplit[1]
+        }
+
+        playerName ?: return null
+
+        @Suppress("DEPRECATION")
+        val player = Bukkit.getOfflinePlayer(playerName)
+
+        meta.owningPlayer = player
+
+        return Predicate {
+            val testMeta = it.itemMeta as? SkullMeta ?: return@Predicate false
+            testMeta.owningPlayer?.uniqueId == player.uniqueId
+        }
+    }
+
+    override fun serializeBack(meta: ItemMeta): String? {
+        if (meta !is SkullMeta) {
+            return null
+        }
+
+        if (meta.owningPlayer == null) {
+            return null
+        }
+
+        return "head:${meta.owningPlayer?.name}"
+    }
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/logging/NOOPLogger.kt

@@ -0,0 +1,10 @@
+package com.willfp.eco.internal.logging
+
+import java.util.logging.LogRecord
+import java.util.logging.Logger
+
+object NOOPLogger : Logger("eco_noop", null as String?) {
+    override fun log(record: LogRecord?) {
+        return
+    }
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/placeholder/PlaceholderLookup.kt

@@ -0,0 +1,65 @@
+package com.willfp.eco.internal.placeholder
+
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.core.integrations.placeholder.PlaceholderManager
+import com.willfp.eco.core.placeholder.InjectablePlaceholder
+import com.willfp.eco.core.placeholder.Placeholder
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+import com.willfp.eco.core.placeholder.templates.SimpleInjectablePlaceholder
+import java.util.regex.Pattern
+
+/*
+
+A set of global placeholders that are always available.
+
+ */
+private val globalPlaceholders = setOf<Placeholder>(
+    object : SimpleInjectablePlaceholder("player") {
+        override fun getValue(args: String, context: PlaceholderContext): String? {
+            return context.player?.name
+        }
+    },
+)
+
+class PlaceholderLookup(
+    val args: String,
+    val plugin: EcoPlugin?,
+    private val injections: Collection<InjectablePlaceholder>?
+) {
+    fun findMatchingPlaceholder(): Placeholder? {
+        if (plugin != null) {
+            val pluginPlaceholders = PlaceholderManager.getRegisteredPlaceholders(plugin)
+            for (placeholder in pluginPlaceholders) {
+                if (placeholder.matches(this)) {
+                    return placeholder
+                }
+            }
+        }
+
+        if (injections != null) {
+            for (placeholder in injections) {
+                if (placeholder.matches(this)) {
+                    return placeholder
+                }
+            }
+        }
+
+        for (placeholder in globalPlaceholders) {
+            if (placeholder.matches(this)) {
+                return placeholder
+            }
+        }
+
+        return null
+    }
+
+    private fun Placeholder.matches(lookup: PlaceholderLookup): Boolean {
+        val pattern = this.pattern
+        val patternString = pattern.pattern()
+
+        val patternFlags = pattern.flags()
+        val isLiteral = Pattern.LITERAL and patternFlags != 0
+
+        return if (isLiteral) lookup.args == patternString else pattern.matcher(lookup.args).matches()
+    }
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/placeholder/PlaceholderParser.kt

@@ -0,0 +1,207 @@
+package com.willfp.eco.internal.placeholder
+
+import com.github.benmanes.caffeine.cache.Caffeine
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.core.integrations.placeholder.PlaceholderManager
+import com.willfp.eco.core.placeholder.InjectablePlaceholder
+import com.willfp.eco.core.placeholder.Placeholder
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+import com.willfp.eco.util.StringUtils
+import java.util.concurrent.TimeUnit
+
+/*
+
+A lot of methods here are centered around minimising calls to getPlaceholderInjections,
+which tends to be slow for things like configs. This was optimised with ListViewOfCollection,
+but it's still best to minimise the memory overhead.
+
+ */
+
+class PlaceholderParser {
+    private val placeholderRegex = Regex("%([^% ]+)%")
+
+    private val placeholderLookupCache = Caffeine.newBuilder()
+        .expireAfterWrite(1, TimeUnit.SECONDS)
+        .build<PlaceholderLookup, Placeholder?>()
+
+    fun translatePlacholders(text: String, context: PlaceholderContext): String {
+        return translatePlacholders(text, context, context.injectableContext.placeholderInjections)
+    }
+
+    private fun translatePlacholders(
+        text: String,
+        context: PlaceholderContext,
+        injections: Collection<InjectablePlaceholder>,
+        translateEcoPlaceholders: Boolean = true
+    ): String {
+        /*
+
+        Why am I doing injections at the start, and again at the end?
+
+        Additional players let you use something like victim as a player to parse in relation to,
+        for example doing %victim_player_health%, which would parse the health of the victim.
+
+        However, something like libreforge will also inject %victim_max_health%, which is unrelated
+        to additional players, and instead holds a constant value. So, eco saw this, smartly thought
+        "ah, it's an additional player, let's parse it", and then tried to parse %max_health% with
+        relation to the victim, which resolved to zero. So, we have to parse statics and player statics
+        that might include a prefix first, then additional players, then player statics with the support
+        of additional players.
+
+        This was a massive headache and took so many reports before I clocked what was going on.
+
+        Oh well, at least it's fixed now.
+
+         */
+
+        // Apply injections first
+        var processed = injections.fold(text) { acc, injection ->
+            injection.tryTranslateQuickly(acc, context)
+        }
+
+        // Prevent running 2 scans if there are no additional players.
+        if (context.additionalPlayers.isNotEmpty()) {
+            val found = PlaceholderManager.findPlaceholdersIn(text)
+            for (additionalPlayer in context.additionalPlayers) {
+                val prefix = "%${additionalPlayer.identifier}_"
+                processed = found.fold(processed) { acc, placeholder ->
+                    if (placeholder.startsWith(prefix)) {
+                        val newPlaceholder = "%${StringUtils.removePrefix(prefix, placeholder)}"
+                        val translation = translatePlacholders(
+                            newPlaceholder,
+                            context.copyWithPlayer(additionalPlayer.player),
+                            injections
+                        )
+                        acc.replace(placeholder, translation)
+                    } else {
+                        acc
+                    }
+                }
+            }
+        }
+
+        // Translate eco placeholders
+        if (translateEcoPlaceholders) {
+            processed = translateEcoPlaceholdersIn(processed, context, injections)
+        }
+
+        // Apply registered integrations
+        processed = PlaceholderManager.getRegisteredIntegrations().fold(processed) { acc, integration ->
+            integration.translate(acc, context.player)
+        }
+
+        // Apply injections again
+        return injections.fold(processed) { acc, injection ->
+            injection.tryTranslateQuickly(acc, context)
+        }
+    }
+
+    fun getPlaceholderResult(
+        plugin: EcoPlugin?,
+        args: String,
+        context: PlaceholderContext
+    ): String? {
+        // Only scan for injections if plugin is null.
+        val injections = if (plugin == null) context.injectableContext.placeholderInjections else null
+
+        return doGetResult(plugin, args, injections, context)
+    }
+
+    // Injections are sent separately here to prevent multiple calls to getPlaceholderInjections
+    private fun doGetResult(
+        plugin: EcoPlugin?,
+        args: String?,
+        injections: Collection<InjectablePlaceholder>?,
+        context: PlaceholderContext
+    ): String? {
+        if (args == null) {
+            return null
+        }
+
+        val lookup = PlaceholderLookup(args, plugin, injections)
+
+        val placeholder = placeholderLookupCache.get(lookup) {
+            it.findMatchingPlaceholder()
+        }
+
+        return placeholder?.getValue(args, context)
+    }
+
+    private fun translateEcoPlaceholdersIn(
+        text: String,
+        context: PlaceholderContext,
+        injections: Collection<InjectablePlaceholder>
+    ): String {
+        val output = StringBuilder()
+        var lastAppendPosition = 0
+
+        for (matchResult in placeholderRegex.findAll(text)) {
+            val placeholder = matchResult.groups[1]?.value ?: ""
+
+            val injectableResult = doGetResult(null, placeholder, injections, context)
+
+            val parts = placeholder.split("_", limit = 2)
+
+            var result: String? = null
+
+            if (injectableResult != null) {
+                result = injectableResult
+            } else if (parts.size == 2) {
+                val plugin = EcoPlugin.getPlugin(parts[0])
+
+                if (plugin != null) {
+                    result = doGetResult(plugin, parts[1], null, context)
+                }
+            }
+
+            output.append(text.substring(lastAppendPosition, matchResult.range.first))
+
+            output.append(result ?: matchResult.value)
+
+            lastAppendPosition = matchResult.range.last + 1
+        }
+
+        output.append(text.substring(lastAppendPosition))
+        return output.toString()
+    }
+
+    fun parseIndividualPlaceholders(strings: Collection<String>, context: PlaceholderContext): Collection<String> {
+        val injections = context.injectableContext.placeholderInjections
+
+        return strings.map {
+            parseIndividualEcoPlaceholder(it, context, injections)
+                ?: translatePlacholders(
+                    it,
+                    context,
+                    injections,
+                    translateEcoPlaceholders = false
+                ) // Default to slower translation
+        }
+    }
+
+    private fun parseIndividualEcoPlaceholder(
+        string: String,
+        context: PlaceholderContext,
+        injections: Collection<InjectablePlaceholder>
+    ): String? {
+        val placeholder = string.substring(1, string.length - 1)
+
+        val injectableResult = doGetResult(null, placeholder, injections, context)
+
+        if (injectableResult != null) {
+            return injectableResult
+        }
+
+        val parts = placeholder.split("_", limit = 2)
+
+        if (parts.size == 2) {
+            val plugin = EcoPlugin.getPlugin(parts[0])
+
+            if (plugin != null) {
+                return doGetResult(plugin, parts[1], null, context)
+            }
+        }
+
+        return null
+    }
+}

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/price/PriceFactoryEconomy.kt

@@ -1,10 +1,10 @@
 package com.willfp.eco.internal.price
 
-import com.willfp.eco.core.math.MathContext
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+import com.willfp.eco.core.placeholder.context.PlaceholderContextSupplier
 import com.willfp.eco.core.price.Price
 import com.willfp.eco.core.price.PriceFactory
 import com.willfp.eco.core.price.impl.PriceEconomy
-import java.util.function.Function
 
 object PriceFactoryEconomy : PriceFactory {
     override fun getNames() = listOf(
@@ -12,7 +12,7 @@ object PriceFactoryEconomy : PriceFactory {
         "$"
     )
 
-    override fun create(baseContext: MathContext, function: Function<MathContext, Double>): Price {
+    override fun create(baseContext: PlaceholderContext, function: PlaceholderContextSupplier<Double>): Price {
         return PriceEconomy(baseContext, function)
     }
 }

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/price/PriceFactoryXP.kt

@@ -1,11 +1,11 @@
 package com.willfp.eco.internal.price
 
-import com.willfp.eco.core.math.MathContext
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+import com.willfp.eco.core.placeholder.context.PlaceholderContextSupplier
 import com.willfp.eco.core.price.Price
 import com.willfp.eco.core.price.PriceFactory
 import org.bukkit.entity.Player
 import java.util.UUID
-import java.util.function.Function
 import kotlin.math.roundToInt
 
 object PriceFactoryXP : PriceFactory {
@@ -15,13 +15,13 @@ object PriceFactoryXP : PriceFactory {
         "experience"
     )
 
-    override fun create(baseContext: MathContext, function: Function<MathContext, Double>): Price {
-        return PriceXP(baseContext) { function.apply(it).roundToInt() }
+    override fun create(baseContext: PlaceholderContext, function: PlaceholderContextSupplier<Double>): Price {
+        return PriceXP(baseContext) { function.get(it).roundToInt() }
     }
 
     private class PriceXP(
-        private val baseContext: MathContext,
-        private val xp: (MathContext) -> Int
+        private val baseContext: PlaceholderContext,
+        private val xp: (PlaceholderContext) -> Int
     ) : Price {
         private val multipliers = mutableMapOf<UUID, Double>()
 
@@ -37,7 +37,7 @@ object PriceFactoryXP : PriceFactory {
         }
 
         override fun getValue(player: Player, multiplier: Double): Double {
-            return xp(MathContext.copyWithPlayer(baseContext, player)) * getMultiplier(player) * multiplier
+            return xp(baseContext.copyWithPlayer(player)) * getMultiplier(player) * multiplier
         }
 
         override fun getMultiplier(player: Player): Double {

eco-core/core-backend/src/main/kotlin/com/willfp/eco/internal/price/PriceFactoryXPLevels.kt

@@ -1,11 +1,11 @@
 package com.willfp.eco.internal.price
 
-import com.willfp.eco.core.math.MathContext
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
+import com.willfp.eco.core.placeholder.context.PlaceholderContextSupplier
 import com.willfp.eco.core.price.Price
 import com.willfp.eco.core.price.PriceFactory
 import org.bukkit.entity.Player
 import java.util.UUID
-import java.util.function.Function
 import kotlin.math.roundToInt
 
 object PriceFactoryXPLevels : PriceFactory {
@@ -16,13 +16,13 @@ object PriceFactoryXPLevels : PriceFactory {
         "explevels",
     )
 
-    override fun create(baseContext: MathContext, function: Function<MathContext, Double>): Price {
-        return PriceXPLevel(baseContext) { function.apply(it).roundToInt() }
+    override fun create(baseContext: PlaceholderContext, function: PlaceholderContextSupplier<Double>): Price {
+        return PriceXPLevel(baseContext) { function.get(it).roundToInt() }
     }
 
     private class PriceXPLevel(
-        private val baseContext: MathContext,
-        private val level: (MathContext) -> Int
+        private val baseContext: PlaceholderContext,
+        private val level: (PlaceholderContext) -> Int
     ) : Price {
         private val multipliers = mutableMapOf<UUID, Double>()
 
@@ -37,7 +37,7 @@ object PriceFactoryXPLevels : PriceFactory {
         }
 
         override fun getValue(player: Player, multiplier: Double): Double {
-            return level(MathContext.copyWithPlayer(baseContext, player)) * getMultiplier(player) * multiplier
+            return level(baseContext.copyWithPlayer(player)) * getMultiplier(player) * multiplier
         }
 
         override fun getMultiplier(player: Player): Double {

eco-core/core-nms/v1_20_R1/build.gradle.kts

@@ -0,0 +1,39 @@
+plugins {
+    id("io.papermc.paperweight.userdev")
+}
+
+group = "com.willfp"
+version = rootProject.version
+
+dependencies {
+    implementation(project(":eco-core:core-nms:nms-common"))
+    paperweight.paperDevBundle("1.20-R0.1-SNAPSHOT")
+
+    implementation("net.kyori:adventure-text-minimessage:4.11.0") {
+        version {
+            strictly("4.11.0")
+        }
+        exclude(group = "net.kyori", module = "adventure-api")
+    }
+}
+
+tasks {
+    build {
+        dependsOn(reobfJar)
+    }
+
+    reobfJar {
+        mustRunAfter(shadowJar)
+    }
+
+    shadowJar {
+        relocate(
+            "com.willfp.eco.internal.spigot.proxy.common",
+            "com.willfp.eco.internal.spigot.proxy.v1_20_R1.common"
+        )
+        relocate(
+            "net.kyori.adventure.text.minimessage",
+            "com.willfp.eco.internal.spigot.proxy.v1_20_R1.minimessage"
+        )
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/BukkitCommands.kt

@@ -0,0 +1,35 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.command.PluginCommandBase
+import com.willfp.eco.internal.spigot.proxy.BukkitCommandsProxy
+import org.bukkit.Bukkit
+import org.bukkit.command.Command
+import org.bukkit.command.SimpleCommandMap
+import org.bukkit.craftbukkit.v1_20_R1.CraftServer
+import java.lang.reflect.Field
+
+class BukkitCommands : BukkitCommandsProxy {
+    private val knownCommandsField: Field by lazy {
+        SimpleCommandMap::class.java.getDeclaredField("knownCommands")
+            .apply {
+                isAccessible = true
+            }
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    private val knownCommands: MutableMap<String, Command>
+        get() = knownCommandsField.get(getCommandMap()) as MutableMap<String, Command>
+
+    override fun getCommandMap(): SimpleCommandMap {
+        return (Bukkit.getServer() as CraftServer).commandMap
+    }
+
+    override fun syncCommands() {
+        (Bukkit.getServer() as CraftServer).syncCommands()
+    }
+
+    override fun unregisterCommand(command: PluginCommandBase) {
+        knownCommands.remove(command.name)
+        knownCommands.remove("${command.plugin.name.lowercase()}:${command.name}")
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/CommonsInitializer.kt

@@ -0,0 +1,159 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.internal.spigot.proxy.CommonsInitializerProxy
+import com.willfp.eco.internal.spigot.proxy.common.CommonsProvider
+import com.willfp.eco.internal.spigot.proxy.common.packet.PacketInjectorListener
+import com.willfp.eco.internal.spigot.proxy.common.toResourceLocation
+import net.minecraft.core.registries.BuiltInRegistries
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.Tag
+import net.minecraft.resources.ResourceLocation
+import net.minecraft.server.level.ServerPlayer
+import net.minecraft.world.entity.PathfinderMob
+import net.minecraft.world.item.Item
+import org.bukkit.Bukkit
+import org.bukkit.Material
+import org.bukkit.NamespacedKey
+import org.bukkit.craftbukkit.v1_20_R1.CraftServer
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftEntity
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftMob
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer
+import org.bukkit.craftbukkit.v1_20_R1.inventory.CraftItemStack
+import org.bukkit.craftbukkit.v1_20_R1.persistence.CraftPersistentDataContainer
+import org.bukkit.craftbukkit.v1_20_R1.persistence.CraftPersistentDataTypeRegistry
+import org.bukkit.craftbukkit.v1_20_R1.util.CraftMagicNumbers
+import org.bukkit.craftbukkit.v1_20_R1.util.CraftNamespacedKey
+import org.bukkit.entity.LivingEntity
+import org.bukkit.entity.Mob
+import org.bukkit.entity.Player
+import org.bukkit.inventory.ItemStack
+import org.bukkit.persistence.PersistentDataContainer
+import java.lang.reflect.Field
+
+class CommonsInitializer : CommonsInitializerProxy {
+    override fun init(plugin: EcoPlugin) {
+        CommonsProvider.setIfNeeded(CommonsProviderImpl)
+        plugin.onEnable {
+            plugin.eventManager.registerListener(PacketInjectorListener)
+        }
+    }
+
+    object CommonsProviderImpl : CommonsProvider {
+        private val cisHandle: Field = CraftItemStack::class.java.getDeclaredField("handle").apply {
+            isAccessible = true
+        }
+
+        private val pdcRegsitry = Class.forName("org.bukkit.craftbukkit.v1_20_R1.inventory.CraftMetaItem")
+            .getDeclaredField("DATA_TYPE_REGISTRY")
+            .apply { isAccessible = true }
+            .get(null) as CraftPersistentDataTypeRegistry
+
+        override val nbtTagString = CraftMagicNumbers.NBT.TAG_STRING
+
+        override fun toPathfinderMob(mob: Mob): PathfinderMob? {
+            val craft = mob as? CraftMob ?: return null
+            return craft.handle as? PathfinderMob
+        }
+
+        override fun toResourceLocation(namespacedKey: NamespacedKey): ResourceLocation =
+            CraftNamespacedKey.toMinecraft(namespacedKey)
+
+        override fun asNMSStack(itemStack: ItemStack): net.minecraft.world.item.ItemStack {
+            return if (itemStack !is CraftItemStack) {
+                CraftItemStack.asNMSCopy(itemStack)
+            } else {
+                cisHandle[itemStack] as net.minecraft.world.item.ItemStack? ?: CraftItemStack.asNMSCopy(itemStack)
+            }
+        }
+
+        override fun asBukkitStack(itemStack: net.minecraft.world.item.ItemStack): ItemStack {
+            return CraftItemStack.asCraftMirror(itemStack)
+        }
+
+        override fun mergeIfNeeded(itemStack: ItemStack, nmsStack: net.minecraft.world.item.ItemStack) {
+            if (itemStack !is CraftItemStack) {
+                itemStack.itemMeta = CraftItemStack.asCraftMirror(nmsStack).itemMeta
+            }
+        }
+
+        override fun toBukkitEntity(entity: net.minecraft.world.entity.LivingEntity): LivingEntity? =
+            CraftEntity.getEntity(Bukkit.getServer() as CraftServer, entity) as? LivingEntity
+
+        override fun makePdc(tag: CompoundTag, base: Boolean): PersistentDataContainer {
+            fun emptyPdc(): CraftPersistentDataContainer = CraftPersistentDataContainer(pdcRegsitry)
+
+            fun CompoundTag?.toPdc(): PersistentDataContainer {
+                val pdc = emptyPdc()
+                this ?: return pdc
+                val keys = this.allKeys
+                for (key in keys) {
+                    pdc.put(key, this[key])
+                }
+
+                return pdc
+            }
+
+            return if (base) {
+                tag.toPdc()
+            } else {
+                if (tag.contains("PublicBukkitValues")) {
+                    tag.getCompound("PublicBukkitValues").toPdc()
+                } else {
+                    emptyPdc()
+                }
+            }
+        }
+
+        override fun setPdc(
+            tag: CompoundTag,
+            pdc: PersistentDataContainer?,
+            item: net.minecraft.world.item.ItemStack?
+        ) {
+            fun CraftPersistentDataContainer.toTag(): CompoundTag {
+                val compound = CompoundTag()
+                val rawPublicMap: Map<String, Tag> = this.raw
+                for ((key, value) in rawPublicMap) {
+                    compound.put(key, value)
+                }
+
+                return compound
+            }
+
+            val container = when (pdc) {
+                is CraftPersistentDataContainer? -> pdc
+                else -> null
+            }
+
+            if (item != null) {
+                if (container != null && !container.isEmpty) {
+                    for (key in tag.allKeys.toSet()) {
+                        tag.remove(key)
+                    }
+
+                    tag.merge(container.toTag())
+                } else {
+                    item.tag = null
+                }
+            } else {
+                if (container != null && !container.isEmpty) {
+                    tag.put("PublicBukkitValues", container.toTag())
+                } else {
+                    tag.remove("PublicBukkitValues")
+                }
+            }
+        }
+
+        override fun materialToItem(material: Material): Item =
+            BuiltInRegistries.ITEM.getOptional(material.key.toResourceLocation())
+                .orElseThrow { IllegalArgumentException("Material is not item!") }
+
+        override fun itemToMaterial(item: Item) =
+            Material.getMaterial(BuiltInRegistries.ITEM.getKey(item).path.uppercase())
+                ?: throw IllegalArgumentException("Invalid material!")
+
+        override fun toNMS(player: Player): ServerPlayer {
+            return (player as CraftPlayer).handle
+        }
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/DummyEntityFactory.kt

@@ -0,0 +1,16 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.internal.entities.EcoDummyEntity
+import com.willfp.eco.internal.spigot.proxy.DummyEntityFactoryProxy
+import org.bukkit.Location
+import org.bukkit.craftbukkit.v1_20_R1.CraftWorld
+import org.bukkit.entity.Entity
+import org.bukkit.entity.EntityType
+
+class DummyEntityFactory : DummyEntityFactoryProxy {
+    override fun createDummyEntity(location: Location): Entity {
+        val world = location.world as CraftWorld
+        @Suppress("UsePropertyAccessSyntax")
+        return EcoDummyEntity(world.createEntity(location, EntityType.ZOMBIE.entityClass).getBukkitEntity())
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/EntityControllerFactory.kt

@@ -0,0 +1,12 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.entities.ai.EntityController
+import com.willfp.eco.internal.spigot.proxy.EntityControllerFactoryProxy
+import com.willfp.eco.internal.spigot.proxy.v1_20_R1.entity.EcoEntityController
+import org.bukkit.entity.Mob
+
+class EntityControllerFactory : EntityControllerFactoryProxy {
+    override fun <T : Mob> createEntityController(entity: T): EntityController<T> {
+        return EcoEntityController(entity)
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/ExtendedPersistentDataContainerFactory.kt

@@ -0,0 +1,82 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.data.ExtendedPersistentDataContainer
+import com.willfp.eco.internal.spigot.proxy.ExtendedPersistentDataContainerFactoryProxy
+import net.minecraft.nbt.Tag
+import org.bukkit.Material
+import org.bukkit.craftbukkit.v1_20_R1.inventory.CraftItemStack
+import org.bukkit.craftbukkit.v1_20_R1.persistence.CraftPersistentDataContainer
+import org.bukkit.craftbukkit.v1_20_R1.persistence.CraftPersistentDataTypeRegistry
+import org.bukkit.inventory.ItemStack
+import org.bukkit.persistence.PersistentDataContainer
+import org.bukkit.persistence.PersistentDataType
+
+class ExtendedPersistentDataContainerFactory : ExtendedPersistentDataContainerFactoryProxy {
+    private val registry: CraftPersistentDataTypeRegistry
+
+    init {
+        /*
+         Can't grab actual instance since it's in CraftMetaItem (which is package-private)
+         And getting it would mean more janky reflection
+         */
+        val item = CraftItemStack.asCraftCopy(ItemStack(Material.STONE))
+        val pdc = item.itemMeta!!.persistentDataContainer
+        this.registry = CraftPersistentDataContainer::class.java.getDeclaredField("registry")
+            .apply { isAccessible = true }.get(pdc) as CraftPersistentDataTypeRegistry
+    }
+
+    override fun adapt(pdc: PersistentDataContainer): ExtendedPersistentDataContainer {
+        return when (pdc) {
+            is CraftPersistentDataContainer -> EcoPersistentDataContainer(pdc)
+            else -> throw IllegalArgumentException("Custom PDC instance ims not supported!")
+        }
+    }
+
+    override fun newPdc(): PersistentDataContainer {
+        return CraftPersistentDataContainer(registry)
+    }
+
+    inner class EcoPersistentDataContainer(
+        private val handle: CraftPersistentDataContainer
+    ) : ExtendedPersistentDataContainer {
+        @Suppress("UNCHECKED_CAST")
+        private val customDataTags: MutableMap<String, Tag> =
+            CraftPersistentDataContainer::class.java.getDeclaredField("customDataTags")
+                .apply { isAccessible = true }.get(handle) as MutableMap<String, Tag>
+
+        override fun <T : Any, Z : Any> set(key: String, dataType: PersistentDataType<T, Z>, value: Z) {
+            customDataTags[key] =
+                registry.wrap(dataType.primitiveType, dataType.toPrimitive(value, handle.adapterContext))
+        }
+
+        override fun <T : Any, Z : Any> has(key: String, dataType: PersistentDataType<T, Z>): Boolean {
+            val value = customDataTags[key] ?: return false
+            return registry.isInstanceOf(dataType.primitiveType, value)
+        }
+
+        override fun <T : Any, Z : Any> get(key: String, dataType: PersistentDataType<T, Z>): Z? {
+            val value = customDataTags[key] ?: return null
+            return dataType.fromPrimitive(registry.extract(dataType.primitiveType, value), handle.adapterContext)
+        }
+
+        override fun <T : Any, Z : Any> getOrDefault(
+            key: String,
+            dataType: PersistentDataType<T, Z>,
+            defaultValue: Z
+        ): Z {
+            return get(key, dataType) ?: defaultValue
+        }
+
+        override fun remove(key: String) {
+            customDataTags.remove(key)
+        }
+
+        override fun getAllKeys(): MutableSet<String> {
+            return customDataTags.keys
+        }
+
+        override fun getBase(): PersistentDataContainer {
+            return handle
+        }
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/FastItemStackFactory.kt

@@ -0,0 +1,12 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.fast.FastItemStack
+import com.willfp.eco.internal.spigot.proxy.FastItemStackFactoryProxy
+import com.willfp.eco.internal.spigot.proxy.common.item.EcoFastItemStack
+import org.bukkit.inventory.ItemStack
+
+class FastItemStackFactory : FastItemStackFactoryProxy {
+    override fun create(itemStack: ItemStack): FastItemStack {
+        return EcoFastItemStack(itemStack)
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/MiniMessageTranslator.kt

@@ -0,0 +1,33 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.display.Display
+import com.willfp.eco.internal.spigot.proxy.MiniMessageTranslatorProxy
+import com.willfp.eco.util.toLegacy
+import net.kyori.adventure.text.minimessage.MiniMessage
+
+class MiniMessageTranslator : MiniMessageTranslatorProxy {
+    override fun format(message: String): String {
+        var mut = message
+
+        val startsWithPrefix = mut.startsWith(Display.PREFIX)
+        if (startsWithPrefix) {
+            mut = mut.substring(2)
+        }
+
+        mut = mut.replace('§', '&')
+
+        val miniMessage = runCatching {
+            MiniMessage.miniMessage().deserialize(
+                mut
+            ).toLegacy()
+        }.getOrNull() ?: mut
+
+        mut = if (startsWithPrefix) {
+            Display.PREFIX + miniMessage
+        } else {
+            miniMessage
+        }
+
+        return mut
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/PacketHandler.kt

@@ -0,0 +1,46 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.EcoPlugin
+import com.willfp.eco.core.packet.PacketListener
+import com.willfp.eco.internal.spigot.proxy.PacketHandlerProxy
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketAutoRecipe
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketHeldItemSlot
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketOpenWindowMerchant
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketSetCreativeSlot
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketSetSlot
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.PacketWindowItems
+import com.willfp.eco.internal.spigot.proxy.common.packet.display.frame.clearFrames
+import net.minecraft.network.protocol.Packet
+import org.bukkit.craftbukkit.v1_20_R1.entity.CraftPlayer
+import org.bukkit.entity.Player
+
+class PacketHandler : PacketHandlerProxy {
+    override fun sendPacket(player: Player, packet: com.willfp.eco.core.packet.Packet) {
+        if (player !is CraftPlayer) {
+            return
+        }
+
+        val handle = packet.handle
+
+        if (handle !is Packet<*>) {
+            return
+        }
+
+        player.handle.connection.send(handle)
+    }
+
+    override fun clearDisplayFrames() {
+        clearFrames()
+    }
+
+    override fun getPacketListeners(plugin: EcoPlugin): List<PacketListener> {
+        return listOf(
+            PacketAutoRecipe(plugin),
+            PacketHeldItemSlot,
+            PacketOpenWindowMerchant,
+            PacketSetCreativeSlot,
+            PacketSetSlot,
+            PacketWindowItems(plugin)
+        )
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/SNBTConverter.kt

@@ -0,0 +1,52 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.core.items.TestableItem
+import com.willfp.eco.core.recipe.parts.EmptyTestableItem
+import com.willfp.eco.internal.spigot.proxy.SNBTConverterProxy
+import net.minecraft.nbt.CompoundTag
+import net.minecraft.nbt.SnbtPrinterTagVisitor
+import net.minecraft.nbt.TagParser
+import org.bukkit.craftbukkit.v1_20_R1.inventory.CraftItemStack
+import org.bukkit.inventory.ItemStack
+
+class SNBTConverter : SNBTConverterProxy {
+    override fun fromSNBT(snbt: String): ItemStack? {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return null
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        return CraftItemStack.asBukkitCopy(nms)
+    }
+
+    override fun toSNBT(itemStack: ItemStack): String {
+        val nms = CraftItemStack.asNMSCopy(itemStack)
+        return SnbtPrinterTagVisitor().visit(nms.save(CompoundTag()))
+    }
+
+    override fun makeSNBTTestable(snbt: String): TestableItem {
+        val nbt = runCatching { TagParser.parseTag(snbt) }.getOrNull() ?: return EmptyTestableItem()
+        val nms = net.minecraft.world.item.ItemStack.of(nbt)
+        if (nms == net.minecraft.world.item.ItemStack.EMPTY) {
+            return EmptyTestableItem()
+        }
+
+        nbt.remove("Count")
+        return SNBTTestableItem(CraftItemStack.asBukkitCopy(nms), nbt)
+    }
+
+    class SNBTTestableItem(
+        private val item: ItemStack,
+        private val tag: CompoundTag
+    ) : TestableItem {
+        override fun matches(itemStack: ItemStack?): Boolean {
+            if (itemStack == null) {
+                return false
+            }
+
+            val nms = CraftItemStack.asNMSCopy(itemStack)
+            val nmsTag = nms.save(CompoundTag())
+            nmsTag.remove("Count")
+            return tag.copy().merge(nmsTag) == nmsTag && itemStack.type == item.type
+        }
+
+        override fun getItem(): ItemStack = item
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/Skull.kt

@@ -0,0 +1,18 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.internal.spigot.proxy.SkullProxy
+import com.willfp.eco.internal.spigot.proxy.common.texture
+import org.bukkit.inventory.meta.SkullMeta
+
+class Skull : SkullProxy {
+    override fun setSkullTexture(
+        meta: SkullMeta,
+        base64: String
+    ) {
+        meta.texture = base64
+    }
+
+    override fun getSkullTexture(
+        meta: SkullMeta
+    ): String? = meta.texture
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/TPS.kt

@@ -0,0 +1,11 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1
+
+import com.willfp.eco.internal.spigot.proxy.TPSProxy
+import org.bukkit.Bukkit
+import org.bukkit.craftbukkit.v1_20_R1.CraftServer
+
+class TPS : TPSProxy {
+    override fun getTPS(): Double {
+        return (Bukkit.getServer() as CraftServer).handle.server.recentTps[0]
+    }
+}

eco-core/core-nms/v1_20_R1/src/main/kotlin/com/willfp/eco/internal/spigot/proxy/v1_20_R1/entity/EcoEntityController.kt

@@ -0,0 +1,95 @@
+package com.willfp.eco.internal.spigot.proxy.v1_20_R1.entity
+
+import com.willfp.eco.core.entities.ai.CustomGoal
+import com.willfp.eco.core.entities.ai.EntityController
+import com.willfp.eco.core.entities.ai.EntityGoal
+import com.willfp.eco.core.entities.ai.TargetGoal
+import com.willfp.eco.internal.spigot.proxy.common.ai.CustomGoalFactory
+import com.willfp.eco.internal.spigot.proxy.common.ai.getGoalFactory
+import com.willfp.eco.internal.spigot.proxy.common.toPathfinderMob
+import net.minecraft.world.entity.PathfinderMob
+import net.minecraft.world.entity.ai.goal.Goal
+import org.bukkit.entity.Mob
+
+class EcoEntityController<T : Mob>(
+    private val handle: T
+) : EntityController<T> {
+    override fun addEntityGoal(priority: Int, goal: EntityGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        nms.goalSelector.addGoal(
+            priority,
+            goal.getGoalFactory()?.create(goal, nms) ?: return this
+        )
+
+        return this
+    }
+
+    override fun removeEntityGoal(goal: EntityGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        val predicate: (Goal) -> Boolean = if (goal is CustomGoal<*>) {
+            { CustomGoalFactory.isGoalOfType(it, goal) }
+        } else {
+            { goal.getGoalFactory()?.isGoalOfType(it) == true }
+        }
+
+        for (wrapped in nms.goalSelector.availableGoals.toSet()) {
+            if (predicate(wrapped.goal)) {
+                nms.goalSelector.removeGoal(wrapped.goal)
+            }
+        }
+
+        return this
+    }
+
+    override fun clearEntityGoals(): EntityController<T> {
+        val nms = getNms() ?: return this
+        nms.goalSelector.availableGoals.clear()
+        return this
+    }
+
+    override fun addTargetGoal(priority: Int, goal: TargetGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        nms.targetSelector.addGoal(
+            priority, goal.getGoalFactory()?.create(goal, nms) ?: return this
+        )
+
+        nms.targetSelector
+
+        return this
+    }
+
+    override fun removeTargetGoal(goal: TargetGoal<in T>): EntityController<T> {
+        val nms = getNms() ?: return this
+
+        val predicate: (Goal) -> Boolean = if (goal is CustomGoal<*>) {
+            { CustomGoalFactory.isGoalOfType(it, goal) }
+        } else {
+            { goal.getGoalFactory()?.isGoalOfType(it) == true }
+        }
+
+        for (wrapped in nms.targetSelector.availableGoals.toSet()) {
+            if (predicate(wrapped.goal)) {
+                nms.targetSelector.removeGoal(wrapped.goal)
+            }
+        }
+
+        return this
+    }
+
+    override fun clearTargetGoals(): EntityController<T> {
+        val nms = getNms() ?: return this
+        nms.targetSelector.availableGoals.clear()
+        return this
+    }
+
+    private fun getNms(): PathfinderMob? {
+        return handle.toPathfinderMob()
+    }
+
+    override fun getEntity(): T {
+        return handle
+    }
+}

eco-core/core-plugin/build.gradle.kts

@@ -52,12 +52,16 @@ dependencies {
     compileOnly("com.github.N0RSKA:ScytherAPI:55a")
     compileOnly("com.ticxo.modelengine:api:R3.0.1")
     compileOnly("me.TechsCode:UltraEconomyAPI:1.0.0")
+    compileOnly("org.black_ixx:playerpoints:3.2.5")
     compileOnly("com.github.Ssomar-Developement:SCore:3.4.7")
     compileOnly("io.lumine:Mythic:5.2.1")
     compileOnly("io.lumine:LumineUtils:1.19-SNAPSHOT")
     compileOnly("com.SirBlobman.combatlogx:CombatLogX-API:10.0.0.0-SNAPSHOT")
     compileOnly("com.github.sirblobman.combatlogx:api:11.0.0.0-SNAPSHOT")
     compileOnly("LibsDisguises:LibsDisguises:10.0.26")
+    compileOnly("com.denizenscript:denizen:1.2.7-SNAPSHOT") {
+        exclude(group = "*", module = "*")
+    }
 
     compileOnly(fileTree("../../lib") {
         include("*.jar")

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/EcoImpl.kt

@@ -13,8 +13,8 @@ import com.willfp.eco.core.gui.menu.Menu
 import com.willfp.eco.core.gui.menu.MenuType
 import com.willfp.eco.core.gui.slot.functional.SlotProvider
 import com.willfp.eco.core.items.Items
-import com.willfp.eco.core.math.MathContext
 import com.willfp.eco.core.packet.Packet
+import com.willfp.eco.core.placeholder.context.PlaceholderContext
 import com.willfp.eco.internal.EcoPropsParser
 import com.willfp.eco.internal.command.EcoPluginCommand
 import com.willfp.eco.internal.command.EcoSubcommand
@@ -37,6 +37,8 @@ import com.willfp.eco.internal.gui.menu.renderedInventory
 import com.willfp.eco.internal.gui.slot.EcoSlotBuilder
 import com.willfp.eco.internal.integrations.PAPIExpansion
 import com.willfp.eco.internal.logging.EcoLogger
+import com.willfp.eco.internal.logging.NOOPLogger
+import com.willfp.eco.internal.placeholder.PlaceholderParser
 import com.willfp.eco.internal.proxy.EcoProxyFactory
 import com.willfp.eco.internal.scheduling.EcoScheduler
 import com.willfp.eco.internal.spigot.data.DataYml
@@ -44,7 +46,9 @@ import com.willfp.eco.internal.spigot.data.KeyRegistry
 import com.willfp.eco.internal.spigot.data.ProfileHandler
 import com.willfp.eco.internal.spigot.data.storage.HandlerType
 import com.willfp.eco.internal.spigot.integrations.bstats.MetricHandler
-import com.willfp.eco.internal.spigot.math.evaluateExpression
+import com.willfp.eco.internal.spigot.math.DelegatedExpressionHandler
+import com.willfp.eco.internal.spigot.math.ImmediatePlaceholderTranslationExpressionHandler
+import com.willfp.eco.internal.spigot.math.LazyPlaceholderTranslationExpressionHandler
 import com.willfp.eco.internal.spigot.proxy.BukkitCommandsProxy
 import com.willfp.eco.internal.spigot.proxy.CommonsInitializerProxy
 import com.willfp.eco.internal.spigot.proxy.DummyEntityFactoryProxy
@@ -88,6 +92,15 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
         if (this.configYml.getBool("use-safer-namespacedkey-creation"))
             SafeInternalNamespacedKeyFactory() else FastInternalNamespacedKeyFactory()
 
+    private val placeholderParser = PlaceholderParser()
+
+    private val crunchHandler = DelegatedExpressionHandler(
+        this,
+        if (this.configYml.getBool("use-immediate-placeholder-translation-for-math"))
+            ImmediatePlaceholderTranslationExpressionHandler(placeholderParser)
+        else LazyPlaceholderTranslationExpressionHandler(placeholderParser),
+    )
+
     override fun createScheduler(plugin: EcoPlugin) =
         EcoScheduler(plugin)
 
@@ -113,6 +126,9 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
     override fun createLogger(plugin: EcoPlugin) =
         EcoLogger(plugin)
 
+    override fun getNOOPLogger() =
+        NOOPLogger
+
     override fun createPAPIIntegration(plugin: EcoPlugin) {
         PAPIExpansion(plugin)
     }
@@ -172,7 +188,7 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
     }
 
     override fun createPluginCommand(
-        parentDelegate: CommandBase,
+        parentDelegate: PluginCommandBase,
         plugin: EcoPlugin,
         name: String,
         permission: String,
@@ -246,6 +262,7 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
 
     override fun addNewPlugin(plugin: EcoPlugin) {
         loadedEcoPlugins[plugin.name.lowercase()] = plugin
+        loadedEcoPlugins[plugin.id] = plugin
     }
 
     override fun getLoadedPlugins(): List<String> =
@@ -269,9 +286,6 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
     override fun loadPlayerProfile(uuid: UUID) =
         profileHandler.load(uuid)
 
-    override fun unloadPlayerProfile(uuid: UUID) =
-        profileHandler.unloadPlayer(uuid)
-
     override fun createDummyEntity(location: Location): Entity =
         getProxy(DummyEntityFactoryProxy::class.java).createDummyEntity(location)
 
@@ -312,8 +326,8 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
     override fun getTPS() =
         getProxy(TPSProxy::class.java).getTPS()
 
-    override fun evaluate(expression: String, context: MathContext) =
-        evaluateExpression(expression, context)
+    override fun evaluate(expression: String, context: PlaceholderContext) =
+        crunchHandler.evaluate(expression, context)
 
     override fun getOpenMenu(player: Player) =
         player.renderedInventory?.menu
@@ -326,4 +340,10 @@ class EcoImpl : EcoSpigotPlugin(), Eco {
 
     override fun sendPacket(player: Player, packet: Packet) =
         this.getProxy(PacketHandlerProxy::class.java).sendPacket(player, packet)
+
+    override fun translatePlaceholders(text: String, context: PlaceholderContext) =
+        placeholderParser.translatePlacholders(text, context)
+
+    override fun getPlaceholderValue(plugin: EcoPlugin?, args: String, context: PlaceholderContext) =
+        placeholderParser.getPlaceholderResult(plugin, args, context)
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/EcoSpigotPlugin.kt

@@ -45,6 +45,7 @@ import com.willfp.eco.internal.items.ArgParserColor
 import com.willfp.eco.internal.items.ArgParserCustomModelData
 import com.willfp.eco.internal.items.ArgParserEnchantment
 import com.willfp.eco.internal.items.ArgParserFlag
+import com.willfp.eco.internal.items.ArgParserHead
 import com.willfp.eco.internal.items.ArgParserName
 import com.willfp.eco.internal.items.ArgParserTexture
 import com.willfp.eco.internal.items.ArgParserUnbreakable
@@ -95,6 +96,7 @@ import com.willfp.eco.internal.spigot.integrations.antigrief.AntigriefTowny
 import com.willfp.eco.internal.spigot.integrations.antigrief.AntigriefWorldGuard
 import com.willfp.eco.internal.spigot.integrations.customentities.CustomEntitiesMythicMobs
 import com.willfp.eco.internal.spigot.integrations.customitems.CustomItemsCustomCrafting
+import com.willfp.eco.internal.spigot.integrations.customitems.CustomItemsDenizen
 import com.willfp.eco.internal.spigot.integrations.customitems.CustomItemsExecutableItems
 import com.willfp.eco.internal.spigot.integrations.customitems.CustomItemsHeadDatabase
 import com.willfp.eco.internal.spigot.integrations.customitems.CustomItemsItemsAdder
@@ -110,11 +112,14 @@ import com.willfp.eco.internal.spigot.integrations.hologram.HologramHolographicD
 import com.willfp.eco.internal.spigot.integrations.mcmmo.McmmoIntegrationImpl
 import com.willfp.eco.internal.spigot.integrations.multiverseinventories.MultiverseInventoriesIntegration
 import com.willfp.eco.internal.spigot.integrations.placeholder.PlaceholderIntegrationPAPI
+import com.willfp.eco.internal.spigot.integrations.price.PriceFactoryPlayerPoints
+import com.willfp.eco.internal.spigot.integrations.price.PriceFactoryRoyaleEconomy
 import com.willfp.eco.internal.spigot.integrations.price.PriceFactoryUltraEconomy
 import com.willfp.eco.internal.spigot.integrations.shop.ShopDeluxeSellwands
 import com.willfp.eco.internal.spigot.integrations.shop.ShopEconomyShopGUI
 import com.willfp.eco.internal.spigot.integrations.shop.ShopShopGuiPlus
 import com.willfp.eco.internal.spigot.integrations.shop.ShopZShop
+import com.willfp.eco.internal.spigot.metrics.PlayerflowHandler
 import com.willfp.eco.internal.spigot.proxy.FastItemStackFactoryProxy
 import com.willfp.eco.internal.spigot.proxy.PacketHandlerProxy
 import com.willfp.eco.internal.spigot.recipes.CraftingRecipeListener
@@ -125,6 +130,7 @@ import com.willfp.eco.internal.spigot.recipes.stackhandlers.ShapedCraftingRecipe
 import com.willfp.eco.internal.spigot.recipes.stackhandlers.ShapelessCraftingRecipeStackHandler
 import com.willfp.eco.util.ClassUtils
 import me.TechsCode.UltraEconomy.UltraEconomy
+import me.qKing12.RoyaleEconomy.MultiCurrency.MultiCurrencyHandler
 import net.kyori.adventure.platform.bukkit.BukkitAudiences
 import net.milkbowl.vault.economy.Economy
 import org.bukkit.Bukkit
@@ -145,6 +151,7 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
         Items.registerArgParser(ArgParserFlag)
         Items.registerArgParser(ArgParserUnbreakable)
         Items.registerArgParser(ArgParserName)
+        Items.registerArgParser(ArgParserHead)
 
         Entities.registerArgParser(EntityArgParserName)
         Entities.registerArgParser(EntityArgParserNoAI)
@@ -217,8 +224,6 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
             this.logger.info("No conflicts found!")
         }
 
-
-        CollatedRunnable(this)
         CustomItemsManager.registerProviders() // Do it again here
 
         // Register events for ShopSellEvent
@@ -249,19 +254,23 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
         Eco.get().adventure?.close()
     }
 
-    override fun handleReload() {
+    override fun createTasks() {
         CollatedRunnable(this)
 
         this.scheduler.runLater(3) {
             profileHandler.migrateIfNeeded()
         }
 
-        ProfileSaver(this, profileHandler)
+        ProfileSaver(this, profileHandler).startTicking()
+
         this.scheduler.runTimer(
-            { getProxy(PacketHandlerProxy::class.java).clearDisplayFrames() },
             this.configYml.getInt("display-frame-ttl").toLong(),
-            this.configYml.getInt("display-frame-ttl").toLong()
-        )
+            this.configYml.getInt("display-frame-ttl").toLong(),
+        ) { getProxy(PacketHandlerProxy::class.java).clearDisplayFrames() }
+
+        if (this.configYml.getBool("playerflow")) {
+            PlayerflowHandler(this.scheduler).startTicking()
+        }
     }
 
     override fun handleAfterLoad() {
@@ -323,6 +332,7 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
             },
             IntegrationLoader("MythicMobs") { CustomItemsManager.register(CustomItemsMythicMobs(this)) },
             IntegrationLoader("Scyther") { CustomItemsManager.register(CustomItemsScyther()) },
+            IntegrationLoader("Denizen") { CustomItemsManager.register(CustomItemsDenizen()) },
 
             // Shop
             IntegrationLoader("ShopGUIPlus") { ShopManager.register(ShopShopGuiPlus()) },
@@ -355,6 +365,12 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
                     Prices.registerPriceFactory(PriceFactoryUltraEconomy(currency))
                 }
             },
+            IntegrationLoader("PlayerPoints") { Prices.registerPriceFactory(PriceFactoryPlayerPoints()) },
+            IntegrationLoader("RoyaleEconomy") {
+                for (currency in MultiCurrencyHandler.getCurrencies()) {
+                    Prices.registerPriceFactory(PriceFactoryRoyaleEconomy(currency))
+                }
+            },
 
             // Placeholder
             IntegrationLoader("PlaceholderAPI") { PlaceholderManager.addIntegration(PlaceholderIntegrationPAPI()) },
@@ -379,7 +395,7 @@ abstract class EcoSpigotPlugin : EcoPlugin() {
             GUIListener(this),
             ArrowDataListener(this),
             ArmorChangeEventListeners(this),
-            DataListener(this),
+            DataListener(this, profileHandler),
             PlayerBlockListener(this),
             ServerLocking
         )

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/DataListener.kt

@@ -1,6 +1,5 @@
 package com.willfp.eco.internal.spigot.data
 
-import com.willfp.eco.core.Eco
 import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.util.PlayerUtils
 import org.bukkit.event.EventHandler
@@ -11,11 +10,14 @@ import org.bukkit.event.player.PlayerLoginEvent
 import org.bukkit.event.player.PlayerQuitEvent
 
 class DataListener(
-    private val plugin: EcoPlugin
+    private val plugin: EcoPlugin,
+    private val handler: ProfileHandler
 ) : Listener {
     @EventHandler(priority = EventPriority.HIGHEST)
     fun onLeave(event: PlayerQuitEvent) {
-        Eco.get().unloadPlayerProfile(event.player.uniqueId)
+        val profile = handler.accessLoadedProfile(event.player.uniqueId) ?: return
+        handler.saveKeysFor(event.player.uniqueId, profile.data.keys)
+        handler.unloadPlayer(event.player.uniqueId)
     }
 
     @EventHandler
@@ -27,6 +29,6 @@ class DataListener(
 
     @EventHandler(priority = EventPriority.LOWEST)
     fun onLogin(event: PlayerLoginEvent) {
-        Eco.get().unloadPlayerProfile(event.player.uniqueId)
+        handler.unloadPlayer(event.player.uniqueId)
     }
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/EcoProfile.kt

@@ -1,24 +1,26 @@
 package com.willfp.eco.internal.spigot.data
 
+import com.willfp.eco.core.EcoPlugin
 import com.willfp.eco.core.data.PlayerProfile
 import com.willfp.eco.core.data.Profile
 import com.willfp.eco.core.data.ServerProfile
 import com.willfp.eco.core.data.keys.PersistentDataKey
+import com.willfp.eco.core.data.keys.PersistentDataKeyType
 import com.willfp.eco.internal.spigot.data.storage.DataHandler
+import com.willfp.eco.util.namespacedKeyOf
 import java.util.UUID
 import java.util.concurrent.ConcurrentHashMap
 
 abstract class EcoProfile(
     val data: MutableMap<PersistentDataKey<*>, Any>,
     val uuid: UUID,
-    private val handler: DataHandler
+    private val handler: DataHandler,
+    private val localHandler: DataHandler
 ) : Profile {
     override fun <T : Any> write(key: PersistentDataKey<T>, value: T) {
         this.data[key] = value
 
-        val changedKeys = CHANGE_MAP[uuid] ?: mutableSetOf()
-        changedKeys.add(key)
-        CHANGE_MAP[uuid] = changedKeys
+        CHANGE_MAP.add(uuid)
     }
 
     override fun <T : Any> read(key: PersistentDataKey<T>): T {
@@ -27,7 +29,12 @@ abstract class EcoProfile(
             return this.data[key] as T
         }
 
-        this.data[key] = handler.read(uuid, key) ?: key.defaultValue
+        this.data[key] = if (key.isLocal) {
+            localHandler.read(uuid, key)
+        } else {
+            handler.read(uuid, key)
+        } ?: key.defaultValue
+
         return read(key)
     }
 
@@ -44,25 +51,58 @@ abstract class EcoProfile(
     }
 
     companion object {
-        val CHANGE_MAP: MutableMap<UUID, MutableSet<PersistentDataKey<*>>> = ConcurrentHashMap()
+        val CHANGE_MAP: MutableSet<UUID> = ConcurrentHashMap.newKeySet()
     }
 }
 
 class EcoPlayerProfile(
     data: MutableMap<PersistentDataKey<*>, Any>,
     uuid: UUID,
-    handler: DataHandler
-) : EcoProfile(data, uuid, handler), PlayerProfile {
+    handler: DataHandler,
+    localHandler: DataHandler
+) : EcoProfile(data, uuid, handler, localHandler), PlayerProfile {
     override fun toString(): String {
         return "EcoPlayerProfile{uuid=$uuid}"
     }
 }
 
+private val serverIDKey = PersistentDataKey(
+    namespacedKeyOf("eco", "server_id"),
+    PersistentDataKeyType.STRING,
+    ""
+)
+
+private val localServerIDKey = PersistentDataKey(
+    namespacedKeyOf("eco", "local_server_id"),
+    PersistentDataKeyType.STRING,
+    ""
+)
+
 class EcoServerProfile(
     data: MutableMap<PersistentDataKey<*>, Any>,
-    handler: DataHandler
-) : EcoProfile(data, serverProfileUUID, handler), ServerProfile {
+    handler: DataHandler,
+    localHandler: DataHandler
+) : EcoProfile(data, serverProfileUUID, handler, localHandler), ServerProfile {
+    override fun getServerID(): String {
+        if (this.read(serverIDKey).isBlank()) {
+            this.write(serverIDKey, UUID.randomUUID().toString())
+        }
+
+        return this.read(serverIDKey)
+    }
+
+    override fun getLocalServerID(): String {
+        if (this.read(localServerIDKey).isBlank()) {
+            this.write(localServerIDKey, UUID.randomUUID().toString())
+        }
+
+        return this.read(localServerIDKey)
+    }
+
     override fun toString(): String {
         return "EcoServerProfile"
     }
 }
+
+private val PersistentDataKey<*>.isLocal: Boolean
+    get() = this == localServerIDKey || EcoPlugin.getPlugin(this.key.namespace)?.isUsingLocalStorage == true

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/KeyRegistry.kt

@@ -4,6 +4,7 @@ import com.willfp.eco.core.config.interfaces.Config
 import com.willfp.eco.core.data.keys.PersistentDataKey
 import com.willfp.eco.core.data.keys.PersistentDataKeyType
 import org.bukkit.NamespacedKey
+import java.math.BigDecimal
 
 object KeyRegistry {
     private val registry = mutableMapOf<NamespacedKey, PersistentDataKey<*>>()
@@ -44,6 +45,9 @@ object KeyRegistry {
             PersistentDataKeyType.CONFIG -> if (default !is Config) {
                 throw IllegalArgumentException("Invalid Data Type! Should be Config")
             }
+            PersistentDataKeyType.BIG_DECIMAL -> if (default !is BigDecimal) {
+                throw IllegalArgumentException("Invalid Data Type! Should be BigDecimal")
+            }
 
             else -> throw NullPointerException("Null value found!")
         }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/ProfileHandler.kt

@@ -9,7 +9,6 @@ import com.willfp.eco.internal.spigot.EcoSpigotPlugin
 import com.willfp.eco.internal.spigot.ServerLocking
 import com.willfp.eco.internal.spigot.data.storage.DataHandler
 import com.willfp.eco.internal.spigot.data.storage.HandlerType
-import com.willfp.eco.internal.spigot.data.storage.LegacyMySQLDataHandler
 import com.willfp.eco.internal.spigot.data.storage.MongoDataHandler
 import com.willfp.eco.internal.spigot.data.storage.MySQLDataHandler
 import com.willfp.eco.internal.spigot.data.storage.YamlDataHandler
@@ -22,24 +21,18 @@ class ProfileHandler(
     private val type: HandlerType,
     private val plugin: EcoSpigotPlugin
 ) {
-    private val loaded = mutableMapOf<UUID, Profile>()
+    private val loaded = mutableMapOf<UUID, EcoProfile>()
+
+    private val localHandler = YamlDataHandler(plugin, this)
 
     val handler: DataHandler = when (type) {
-        HandlerType.YAML -> YamlDataHandler(plugin, this)
+        HandlerType.YAML -> localHandler
         HandlerType.MYSQL -> MySQLDataHandler(plugin, this)
         HandlerType.MONGO -> MongoDataHandler(plugin, this)
-        HandlerType.LEGACY_MYSQL -> LegacyMySQLDataHandler(plugin, this)
     }
 
-    init {
-        if (handler.type == HandlerType.LEGACY_MYSQL) {
-            plugin.logger.warning("You're using the legacy MySQL handler!")
-            plugin.logger.warning("Some features will not work and you may get unfixable errors.")
-            plugin.logger.warning("Support cannot be given to data issues related to legacy MySQL.")
-            plugin.logger.warning("Change your data handler to mysql, mongo, or yaml to fix this!")
-            plugin.logger.warning("This can be done in /plugins/eco/config.yml")
-        }
-    }
+    fun accessLoadedProfile(uuid: UUID): EcoProfile? =
+        loaded[uuid]
 
     fun loadGenericProfile(uuid: UUID): Profile {
         val found = loaded[uuid]
@@ -50,7 +43,7 @@ class ProfileHandler(
         val data = mutableMapOf<PersistentDataKey<*>, Any>()
 
         val profile = if (uuid == serverProfileUUID)
-            EcoServerProfile(data, handler) else EcoPlayerProfile(data, uuid, handler)
+            EcoServerProfile(data, handler, localHandler) else EcoPlayerProfile(data, uuid, handler, localHandler)
 
         loaded[uuid] = profile
         return profile
@@ -65,7 +58,19 @@ class ProfileHandler(
     }
 
     fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-        handler.saveKeysFor(uuid, keys)
+        val profile = accessLoadedProfile(uuid) ?: return
+        val map = mutableMapOf<PersistentDataKey<*>, Any>()
+
+        for (key in keys) {
+            map[key] = profile.data[key] ?: continue
+        }
+
+        handler.saveKeysFor(uuid, map)
+
+        // Don't save to local handler if it's the same handler.
+        if (localHandler != handler) {
+            localHandler.saveKeysFor(uuid, map)
+        }
     }
 
     fun unloadPlayer(uuid: UUID) {
@@ -74,6 +79,10 @@ class ProfileHandler(
 
     fun save() {
         handler.save()
+
+        if (localHandler != handler) {
+            localHandler.save()
+        }
     }
 
     fun migrateIfNeeded() {
@@ -87,11 +96,7 @@ class ProfileHandler(
         }
 
 
-        var previousHandlerType = HandlerType.valueOf(plugin.dataYml.getString("previous-handler"))
-
-        if (previousHandlerType == HandlerType.MYSQL && !plugin.dataYml.has("new-mysql")) {
-            previousHandlerType = HandlerType.LEGACY_MYSQL
-        }
+        val previousHandlerType = HandlerType.valueOf(plugin.dataYml.getString("previous-handler"))
 
         if (previousHandlerType == type) {
             return
@@ -101,7 +106,6 @@ class ProfileHandler(
             HandlerType.YAML -> YamlDataHandler(plugin, this)
             HandlerType.MYSQL -> MySQLDataHandler(plugin, this)
             HandlerType.MONGO -> MongoDataHandler(plugin, this)
-            HandlerType.LEGACY_MYSQL -> LegacyMySQLDataHandler(plugin, this)
         }
 
         ServerLocking.lock("Migrating player data! Check console for more information.")
@@ -161,5 +165,8 @@ class ProfileHandler(
 
     fun initialize() {
         handler.initialize()
+        if (localHandler != handler) {
+            localHandler.initialize()
+        }
     }
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/DataHandler.kt

@@ -19,7 +19,7 @@ abstract class DataHandler(
     /**
      * Save a set of keys for a given UUID.
      */
-    abstract fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>)
+    abstract fun saveKeysFor(uuid: UUID, keys: Map<PersistentDataKey<*>, Any>)
 
     // Everything below this are methods that are only needed for certain implementations.
 

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/HandlerType.kt

@@ -3,6 +3,5 @@ package com.willfp.eco.internal.spigot.data.storage
 enum class HandlerType {
     YAML,
     MYSQL,
-    MONGO,
-    LEGACY_MYSQL
+    MONGO
 }

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/LegacyMySQLDataHandler.kt

@@ -1,315 +0,0 @@
-package com.willfp.eco.internal.spigot.data.storage
-
-import com.github.benmanes.caffeine.cache.Caffeine
-import com.google.common.util.concurrent.ThreadFactoryBuilder
-import com.willfp.eco.core.Eco
-import com.willfp.eco.core.EcoPlugin
-import com.willfp.eco.core.data.keys.PersistentDataKey
-import com.willfp.eco.core.data.keys.PersistentDataKeyType
-import com.willfp.eco.internal.spigot.EcoSpigotPlugin
-import com.willfp.eco.internal.spigot.data.ProfileHandler
-import com.willfp.eco.internal.spigot.data.serverProfileUUID
-import com.zaxxer.hikari.HikariConfig
-import com.zaxxer.hikari.HikariDataSource
-import org.jetbrains.exposed.dao.id.UUIDTable
-import org.jetbrains.exposed.sql.BooleanColumnType
-import org.jetbrains.exposed.sql.Column
-import org.jetbrains.exposed.sql.Database
-import org.jetbrains.exposed.sql.DoubleColumnType
-import org.jetbrains.exposed.sql.IntegerColumnType
-import org.jetbrains.exposed.sql.ResultRow
-import org.jetbrains.exposed.sql.SchemaUtils
-import org.jetbrains.exposed.sql.VarCharColumnType
-import org.jetbrains.exposed.sql.insert
-import org.jetbrains.exposed.sql.select
-import org.jetbrains.exposed.sql.transactions.transaction
-import org.jetbrains.exposed.sql.update
-import java.util.UUID
-import java.util.concurrent.Callable
-import java.util.concurrent.Executors
-import java.util.concurrent.TimeUnit
-
-/*
-
-The MySQL data handler is hot garbage for several reasons:
-- Using MySQL on unstructured data: it's being horrifically misused, but that's just how it has to be.
-- Can't remove un-needed keys, there's wasted space in the columns everywhere.
-- No native support for the STRING_LIST type, instead it 'serializes' the lists with semicolons as separators.
-- General lack of flexibility, it's too rigid.
-
-That's why I added the MongoDB handler, it's far, far better suited for what eco does - use it over
-MySQL if you can.
-
-Oh, also - I don't really know how this class works. I've rewritten it and hacked it together several ways
-in several sessions, and it's basically complete gibberish to me. Adding the STRING_LIST type is probably
-the worst bodge I've shipped in production.
-
- */
-
-@Suppress("UNCHECKED_CAST")
-class LegacyMySQLDataHandler(
-    plugin: EcoSpigotPlugin,
-    handler: ProfileHandler
-) : DataHandler(HandlerType.LEGACY_MYSQL) {
-    private val database: Database
-    private val playerHandler: ImplementedMySQLHandler
-    private val serverHandler: ImplementedMySQLHandler
-
-    init {
-        val config = HikariConfig()
-        config.driverClassName = "com.mysql.cj.jdbc.Driver"
-        config.username = plugin.configYml.getString("mysql.user")
-        config.password = plugin.configYml.getString("mysql.password")
-        config.jdbcUrl = "jdbc:mysql://" +
-                "${plugin.configYml.getString("mysql.host")}:" +
-                "${plugin.configYml.getString("mysql.port")}/" +
-                plugin.configYml.getString("mysql.database")
-        config.maximumPoolSize = plugin.configYml.getInt("mysql.connections")
-
-        database = Database.connect(HikariDataSource(config))
-
-        playerHandler = ImplementedMySQLHandler(
-            handler,
-            UUIDTable("eco_players"),
-            plugin
-        )
-
-        serverHandler = ImplementedMySQLHandler(
-            handler,
-            UUIDTable("eco_server"),
-            plugin
-        )
-    }
-
-    override fun <T : Any> read(uuid: UUID, key: PersistentDataKey<T>): T? {
-        return applyFor(uuid) {
-            it.read(uuid, key)
-        }
-    }
-
-    override fun <T : Any> write(uuid: UUID, key: PersistentDataKey<T>, value: T) {
-        applyFor(uuid) {
-            it.write(uuid, key, value)
-        }
-    }
-
-    override fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-        applyFor(uuid) {
-            it.saveKeysForRow(uuid, keys)
-        }
-    }
-
-    private inline fun <R> applyFor(uuid: UUID, function: (ImplementedMySQLHandler) -> R): R {
-        return if (uuid == serverProfileUUID) {
-            function(serverHandler)
-        } else {
-            function(playerHandler)
-        }
-    }
-
-    override fun initialize() {
-        playerHandler.initialize()
-        serverHandler.initialize()
-    }
-
-    @Suppress("UNCHECKED_CAST")
-    private inner class ImplementedMySQLHandler(
-        private val handler: ProfileHandler,
-        private val table: UUIDTable,
-        private val plugin: EcoPlugin
-    ) {
-        private val rows = Caffeine.newBuilder()
-            .expireAfterWrite(3, TimeUnit.SECONDS)
-            .build<UUID, ResultRow>()
-
-        private val threadFactory = ThreadFactoryBuilder().setNameFormat("eco-legacy-mysql-thread-%d").build()
-        private val executor = Executors.newFixedThreadPool(plugin.configYml.getInt("mysql.threads"), threadFactory)
-        val registeredKeys = mutableSetOf<PersistentDataKey<*>>()
-
-        init {
-            transaction(database) {
-                SchemaUtils.create(table)
-            }
-        }
-
-        fun initialize() {
-            transaction(database) {
-                SchemaUtils.createMissingTablesAndColumns(table, withLogs = false)
-            }
-        }
-
-        fun ensureKeyRegistration(key: PersistentDataKey<*>) {
-            if (table.columns.any { it.name == key.key.toString() }) {
-                registeredKeys.add(key)
-                return
-            }
-
-            registerColumn(key)
-            registeredKeys.add(key)
-        }
-
-        fun <T : Any> write(uuid: UUID, key: PersistentDataKey<T>, value: Any) {
-            getRow(uuid)
-            doWrite(uuid, key, key.type.constrainSQLTypes(value))
-        }
-
-        private fun doWrite(uuid: UUID, key: PersistentDataKey<*>, constrainedValue: Any) {
-            val column: Column<Any> = getColumn(key) as Column<Any>
-
-            executor.submit {
-                transaction(database) {
-                    table.update({ table.id eq uuid }) {
-                        it[column] = constrainedValue
-                    }
-                }
-            }
-        }
-
-        fun saveKeysForRow(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-            saveRow(uuid, keys)
-        }
-
-        private fun saveRow(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-            val profile = handler.loadGenericProfile(uuid)
-
-            executor.submit {
-                transaction(database) {
-                    getRow(uuid)
-
-                    for (key in keys) {
-                        doWrite(uuid, key, key.type.constrainSQLTypes(profile.read(key)))
-                    }
-                }
-            }
-        }
-
-        fun <T> read(uuid: UUID, key: PersistentDataKey<T>): T? {
-            val doRead = Callable<T?> {
-                transaction(database) {
-                    val row = getRow(uuid)
-                    val column = getColumn(key)
-                    val raw = row[column]
-                    key.type.fromConstrained(raw)
-                }
-            }
-
-            ensureKeyRegistration(key) // DON'T DELETE THIS LINE! I know it's covered in getColumn, but I need to do it here as well.
-
-            doRead.call()
-
-            return if (Eco.get().ecoPlugin.configYml.getBool("mysql.async-reads")) {
-                executor.submit(doRead).get()
-            } else {
-                doRead.call()
-            }
-        }
-
-        private fun <T> registerColumn(key: PersistentDataKey<T>) {
-            try {
-                transaction(database) {
-                    try {
-                        table.apply {
-                            if (table.columns.any { it.name == key.key.toString() }) {
-                                return@apply
-                            }
-
-                            when (key.type) {
-                                PersistentDataKeyType.INT -> registerColumn<Int>(key.key.toString(), IntegerColumnType())
-                                    .default(key.defaultValue as Int)
-
-                                PersistentDataKeyType.DOUBLE -> registerColumn<Double>(
-                                    key.key.toString(),
-                                    DoubleColumnType()
-                                ).default(key.defaultValue as Double)
-
-                                PersistentDataKeyType.BOOLEAN -> registerColumn<Boolean>(
-                                    key.key.toString(),
-                                    BooleanColumnType()
-                                ).default(key.defaultValue as Boolean)
-
-                                PersistentDataKeyType.STRING -> registerColumn<String>(
-                                    key.key.toString(),
-                                    VarCharColumnType(512)
-                                ).default(key.defaultValue as String)
-
-                                PersistentDataKeyType.STRING_LIST -> registerColumn<String>(
-                                    key.key.toString(),
-                                    VarCharColumnType(8192)
-                                ).default(PersistentDataKeyType.STRING_LIST.constrainSQLTypes(key.defaultValue as List<String>) as String)
-
-                                PersistentDataKeyType.CONFIG -> throw IllegalArgumentException(
-                                    "Config Persistent Data Keys are not supported by the legacy MySQL handler!"
-                                )
-
-                                else -> throw NullPointerException("Null value found!")
-                            }
-                        }
-
-                        SchemaUtils.createMissingTablesAndColumns(table, withLogs = false)
-                    } catch (e: Exception) {
-                        plugin.logger.info("MySQL Error 1!")
-                        e.printStackTrace()
-                        // What's that? Two enormous exception catches? That's right! This code sucks.
-                    }
-                }
-            } catch (e: Exception) {
-                plugin.logger.info("MySQL Error 2!")
-                e.printStackTrace()
-                // It might fail. Who cares? This is legacy.
-            }
-        }
-
-        private fun getColumn(key: PersistentDataKey<*>): Column<*> {
-            ensureKeyRegistration(key)
-
-            val name = key.key.toString()
-
-            return table.columns.first { it.name == name }
-        }
-
-        private fun getRow(uuid: UUID): ResultRow {
-            fun select(uuid: UUID): ResultRow? {
-                return transaction(database) {
-                    table.select { table.id eq uuid }.limit(1).singleOrNull()
-                }
-            }
-
-            return rows.get(uuid) {
-                val row = select(uuid)
-
-                return@get if (row != null) {
-                    row
-                } else {
-                    transaction(database) {
-                        table.insert { it[id] = uuid }
-                    }
-                    select(uuid)
-                }
-            }
-        }
-    }
-}
-
-private fun <T> PersistentDataKeyType<T>.constrainSQLTypes(value: Any): Any {
-    return if (this == PersistentDataKeyType.STRING_LIST) {
-        @Suppress("UNCHECKED_CAST")
-        value as List<String>
-        value.joinToString(separator = ";")
-    } else {
-        value
-    }
-}
-
-private fun <T> PersistentDataKeyType<T>.fromConstrained(constrained: Any?): T? {
-    if (constrained == null) {
-        return null
-    }
-
-    @Suppress("UNCHECKED_CAST")
-    return if (this == PersistentDataKeyType.STRING_LIST) {
-        constrained as String
-        constrained.split(";").toList()
-    } else {
-        constrained
-    } as T
-}

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MongoDataHandler.kt

@@ -1,6 +1,5 @@
 package com.willfp.eco.internal.spigot.data.storage
 
-import com.willfp.eco.core.data.Profile
 import com.willfp.eco.core.data.keys.PersistentDataKey
 import com.willfp.eco.internal.spigot.EcoSpigotPlugin
 import com.willfp.eco.internal.spigot.data.ProfileHandler
@@ -51,18 +50,16 @@ class MongoDataHandler(
         }
     }
 
-    override fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-        val profile = handler.loadGenericProfile(uuid)
-
+    override fun saveKeysFor(uuid: UUID, keys: Map<PersistentDataKey<*>, Any>) {
         scope.launch {
-            for (key in keys) {
-                saveKey(profile, uuid, key)
+            for ((key, value) in keys) {
+                saveKey(uuid, key, value)
             }
         }
     }
 
-    private suspend fun <T : Any> saveKey(profile: Profile, uuid: UUID, key: PersistentDataKey<T>) {
-        val data = profile.read(key)
+    private suspend fun <T : Any> saveKey(uuid: UUID, key: PersistentDataKey<T>, value: Any) {
+        val data = value as T
         doWrite(uuid, key, data)
     }
 
@@ -100,6 +97,18 @@ class MongoDataHandler(
             profile
         }
     }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) {
+            return true
+        }
+
+        return other is MongoDataHandler
+    }
+
+    override fun hashCode(): Int {
+        return type.hashCode()
+    }
 }
 
 private data class UUIDProfile(

eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MySQLDataHandler.kt

@@ -21,6 +21,7 @@ import org.jetbrains.exposed.sql.insert
 import org.jetbrains.exposed.sql.select
 import org.jetbrains.exposed.sql.transactions.transaction
 import org.jetbrains.exposed.sql.update
+import java.math.BigDecimal
 import java.util.UUID
 import java.util.concurrent.Executors
 import java.util.concurrent.TimeUnit
@@ -34,7 +35,7 @@ Whatever. At least it works.
 
 @Suppress("UNCHECKED_CAST")
 class MySQLDataHandler(
-    private val plugin: EcoSpigotPlugin,
+    plugin: EcoSpigotPlugin,
     private val handler: ProfileHandler
 ) : DataHandler(HandlerType.MYSQL) {
     private val database: Database
@@ -84,6 +85,9 @@ class MySQLDataHandler(
             PersistentDataKeyType.BOOLEAN -> data.getBoolOrNull(key.key.toString())
             PersistentDataKeyType.STRING_LIST -> data.getStringsOrNull(key.key.toString())
             PersistentDataKeyType.CONFIG -> data.getSubsectionOrNull(key.key.toString())
+            PersistentDataKeyType.BIG_DECIMAL -> if (data.has(key.key.toString()))
+                BigDecimal(data.getString(key.key.toString())) else null
+
             else -> null
         }
 
@@ -97,16 +101,15 @@ class MySQLDataHandler(
         setData(uuid, data)
     }
 
-    override fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>) {
-        val profile = handler.loadGenericProfile(uuid)
-
+    override fun saveKeysFor(uuid: UUID, keys: Map<PersistentDataKey<*>, Any>) {
         executor.submit {
             val data = getData(uuid)
-            for (key in keys) {
-                data.set(key.key.toString(), profile.read(key))
+
+            for ((key, value) in keys) {
+                data.set(key.key.toString(), value)
             }
 
-            setData(uuid, data)
+            doSetData(uuid, data)
         }
     }
 
@@ -136,10 +139,14 @@ class MySQLDataHandler(
 
     private fun setData(uuid: UUID, config: Config) {
         executor.submit {
-            transaction(database) {
-                table.update({ table.id eq uuid }) {
-                    it[dataColumn] = config.toPlaintext()
-                }
+            doSetData(uuid, config)
+        }
+    }
+
+    private fun doSetData(uuid: UUID, config: Config) {
+        transaction(database) {
+            table.update({ table.id eq uuid }) {
+                it[dataColumn] = config.toPlaintext()
             }
         }
     }
@@ -150,8 +157,15 @@ class MySQLDataHandler(
         }
     }
 
-    override fun save() {
-        plugin.dataYml.set("new-mysql", true)
-        plugin.dataYml.save()
+    override fun equals(other: Any?): Boolean {
+        if (this === other) {
+            return true
+        }
+
+        return other is MySQLDataHandler
+    }
+
+    override fun hashCode(): Int {
+        return type.hashCode()
     }
 }