Added in support for economy via vault

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

@@ -0,0 +1,90 @@
+package com.willfp.eco.core.integrations.economy;
+
+import lombok.experimental.UtilityClass;
+import org.bukkit.OfflinePlayer;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Class to handle economy.
+ */
+@UtilityClass
+public class EconomyManager {
+    /**
+     * A set of all registered integrations.
+     */
+    private final Set<EconomyWrapper> registered = new HashSet<>();
+
+    /**
+     * Register a new integration.
+     *
+     * @param integration The integration to register.
+     */
+    public void register(@NotNull final EconomyWrapper integration) {
+        registered.add(integration);
+    }
+
+    /**
+     * Get if a player has a certain amount.
+     *
+     * @param player The player.
+     * @param amount The amount.
+     * @return If the player has the amount.
+     */
+    boolean hasAmount(@NotNull final OfflinePlayer player,
+                      final double amount) {
+        for (EconomyWrapper wrapper : registered) {
+            return wrapper.hasAmount(player, amount);
+        }
+
+        return false;
+    }
+
+    /**
+     * Give money to a player.
+     *
+     * @param player The player.
+     * @param amount The amount to give.
+     * @return If the transaction was a success.
+     */
+    boolean giveMoney(@NotNull final OfflinePlayer player,
+                      final double amount) {
+        for (EconomyWrapper wrapper : registered) {
+            return wrapper.giveMoney(player, amount);
+        }
+
+        return false;
+    }
+
+    /**
+     * Remove money from a player.
+     *
+     * @param player The player.
+     * @param amount The amount to remove.
+     * @return If the transaction was a success.
+     */
+    boolean removeMoney(@NotNull final OfflinePlayer player,
+                        final double amount) {
+        for (EconomyWrapper wrapper : registered) {
+            return wrapper.removeMoney(player, amount);
+        }
+
+        return false;
+    }
+
+    /**
+     * Get the balance of a player.
+     *
+     * @param player The player.
+     * @return The balance.
+     */
+    double getBalance(@NotNull final OfflinePlayer player) {
+        for (EconomyWrapper wrapper : registered) {
+            return wrapper.getBalance(player);
+        }
+
+        return 0;
+    }
+}

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

@@ -0,0 +1,48 @@
+package com.willfp.eco.core.integrations.economy;
+
+import com.willfp.eco.core.integrations.Integration;
+import org.bukkit.OfflinePlayer;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Wrapper class for economy integrations.
+ */
+public interface EconomyWrapper extends Integration {
+    /**
+     * Get if a player has a certain amount.
+     *
+     * @param player The player.
+     * @param amount The amount.
+     * @return If the player has the amount.
+     */
+    boolean hasAmount(@NotNull OfflinePlayer player,
+                      double amount);
+
+    /**
+     * Give money to a player.
+     *
+     * @param player The player.
+     * @param amount The amount to give.
+     * @return If the transaction was a success.
+     */
+    boolean giveMoney(@NotNull OfflinePlayer player,
+                      double amount);
+
+    /**
+     * Remove money from a player.
+     *
+     * @param player The player.
+     * @param amount The amount to remove.
+     * @return If the transaction was a success.
+     */
+    boolean removeMoney(@NotNull OfflinePlayer player,
+                        double amount);
+
+    /**
+     * Get the balance of a player.
+     *
+     * @param player The player.
+     * @return The balance.
+     */
+    double getBalance(@NotNull OfflinePlayer player);
+}