Added cool down of setting items

src/main/java/io/github/fisher2911/hmccosmetics/gui/CosmeticGui.java

@@ -33,6 +33,10 @@ public class CosmeticGui {
     protected final Map<Integer, GuiItem> guiItemMap;
     protected Gui gui;
 
+    private long lastClicked;
+
+    private static final float COOL_DOWN = 0.5f;
+
     public CosmeticGui(
             final HMCCosmetics plugin,
             final String title,
@@ -72,6 +76,10 @@ public class CosmeticGui {
             final InventoryClickEvent event,
             final GuiAction<InventoryClickEvent> actionIfSet) {
 
+        final long current = System.currentTimeMillis();
+        if ((current - this.lastClicked) / 1000. < COOL_DOWN) return;
+        this.lastClicked = current;
+
         if (!(human instanceof final Player player)) {
             return;
         }
@@ -129,10 +137,6 @@ public class CosmeticGui {
 
         if (itemStack == null) return null;
 
-        guiItem.setItemStack(
-                ItemBuilder.from(itemStack.clone()).papiPlaceholders(player).build()
-        );
-
         if (guiItem instanceof final ArmorItem armorItem) {
 
             final String permission = armorItem.getPermission() == null ? "" : armorItem.getPermission();
@@ -159,6 +163,10 @@ public class CosmeticGui {
             );
         }
 
+        guiItem.setItemStack(
+                ItemBuilder.from(itemStack.clone()).papiPlaceholders(player).build()
+        );
+
         return guiItem;
     }
 
@@ -196,4 +204,13 @@ public class CosmeticGui {
                 papiPlaceholders(player).
                 build();
     }
+
+    public CosmeticGui copy() {
+        return new CosmeticGui(
+                this.plugin,
+                this.title,
+                this.rows,
+                new HashMap<>(this.guiItemMap)
+        );
+    }
 }

src/main/java/io/github/fisher2911/hmccosmetics/gui/CosmeticsMenu.java

@@ -9,6 +9,7 @@ import io.github.fisher2911.hmccosmetics.cosmetic.CosmeticManager;
 import io.github.fisher2911.hmccosmetics.user.User;
 import org.bukkit.entity.HumanEntity;
 import org.bukkit.entity.Player;
+import org.jetbrains.annotations.Nullable;
 import org.spongepowered.configurate.ConfigurateException;
 import org.spongepowered.configurate.ConfigurationNode;
 import org.spongepowered.configurate.yaml.YamlConfigurationLoader;
@@ -17,6 +18,7 @@ import java.io.File;
 import java.nio.file.Path;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.function.Supplier;
 
 public class CosmeticsMenu {
 
@@ -34,7 +36,7 @@ public class CosmeticsMenu {
     }
 
     public void openMenu(final String id, final HumanEntity humanEntity) {
-        final CosmeticGui cosmeticGui = this.guiMap.get(id);
+        final CosmeticGui cosmeticGui = this.getGui(id);
 
         if (cosmeticGui != null) {
             cosmeticGui.open(humanEntity);
@@ -59,13 +61,20 @@ public class CosmeticsMenu {
             return;
         }
 
-        final CosmeticGui gui = this.guiMap.get(DYE_MENU);
+        final CosmeticGui gui = this.getGui(DYE_MENU);
 
         if (gui instanceof final DyeSelectorGui dyeSelectorGui) {
             dyeSelectorGui.getGui(user, type).open(player);
         }
     }
 
+    @Nullable
+    private CosmeticGui getGui(final String id) {
+        final CosmeticGui gui = this.guiMap.get(id);
+        if (gui == null) return null;
+        return gui.copy();
+    }
+
     public void load() {
         this.guiMap.clear();
         final File file = Path.of(this.plugin.getDataFolder().getPath(),

src/main/java/io/github/fisher2911/hmccosmetics/gui/DyeSelectorGui.java

@@ -1,6 +1,7 @@
 package io.github.fisher2911.hmccosmetics.gui;
 
 import com.google.common.collect.BiMap;
+import com.google.common.collect.HashBiMap;
 import dev.triumphteam.gui.guis.Gui;
 import dev.triumphteam.gui.guis.GuiItem;
 import io.github.fisher2911.hmccosmetics.HMCCosmetics;
@@ -16,6 +17,7 @@ import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.HashMap;
 import java.util.Map;
 import java.util.Optional;
 
@@ -180,4 +182,15 @@ public class DyeSelectorGui extends CosmeticGui {
     protected Object clone() throws CloneNotSupportedException {
         return super.clone();
     }
+
+    public DyeSelectorGui copy() {
+        return new DyeSelectorGui(
+                this.plugin,
+                super.title,
+                super.rows,
+                new HashMap<>(super.guiItemMap),
+                HashBiMap.create(this.cosmeticsSlots),
+                this.selectedCosmetic
+        );
+    }
 }

src/main/java/io/github/fisher2911/hmccosmetics/user/UserManager.java

@@ -226,9 +226,11 @@ public class UserManager {
 
     public void setItem(final User user, final ArmorItem armorItem) {
         user.setItem(armorItem);
-        switch (armorItem.getType()) {
-            case HAT, OFF_HAND -> this.updateCosmetics(user);
-        }
+        Bukkit.getScheduler().runTaskAsynchronously(this.plugin, () -> {
+            switch (armorItem.getType()) {
+                case HAT, OFF_HAND -> this.updateCosmetics(user);
+            }
+        });
     }
 
     public void removeItem(final User user, final ArmorItem.Type type) {