Charge money/give money when buying/selling

src/main/java/com/alttd/GUI/windows/BuyGUI.java

@@ -1,12 +1,14 @@
 package com.alttd.GUI.windows;
 
 import com.alttd.GUI.GUIMerchant;
+import com.alttd.VillagerUI;
 import com.alttd.config.Config;
 import com.alttd.objects.Price;
 import com.alttd.objects.VillagerType;
 import com.alttd.util.Utilities;
 import net.kyori.adventure.text.minimessage.MiniMessage;
 import net.kyori.adventure.text.minimessage.Template;
+import net.milkbowl.vault.economy.Economy;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
@@ -35,11 +37,21 @@ public class BuyGUI extends GUIMerchant {
 
     private void buy(Player player, Material material, int amount, double price)
     {
-        player.sendMessage(MiniMessage.get().parse(
+        Economy econ = VillagerUI.getEcon();
-                "Hi! you bought: " + amount +
+        double balance = econ.getBalance(player);
-                        " " + material.name() +
+
-                        " for " + price +
+        price *= amount;
-                        "."));
+        if (balance < amount) {
+            player.sendMessage(MiniMessage.get().parse(Config.NOT_ENOUGH_MONEY,
+                    Template.of("money", String.valueOf(Utilities.round(balance, 2))),
+                    Template.of("price", String.valueOf(price))));
+            return;
+        }
+        econ.withdrawPlayer(player, price);
+        player.sendMessage(MiniMessage.get().parse(Config.PURCHASED_ITEM,
+                    Template.of("amount", String.valueOf(amount)),
+                    Template.of("item", material.toString()),
+                    Template.of("price", String.valueOf(price))));
     }
 
     private ItemStack getPriceItem(double price) {

src/main/java/com/alttd/GUI/windows/SellGUI.java

@@ -1,12 +1,14 @@
 package com.alttd.GUI.windows;
 
 import com.alttd.GUI.GUIMerchant;
+import com.alttd.VillagerUI;
 import com.alttd.config.Config;
 import com.alttd.objects.Price;
 import com.alttd.objects.VillagerType;
 import com.alttd.util.Utilities;
 import net.kyori.adventure.text.minimessage.MiniMessage;
 import net.kyori.adventure.text.minimessage.Template;
+import net.milkbowl.vault.economy.Economy;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
@@ -35,11 +37,14 @@ public class SellGUI extends GUIMerchant {
 
     private void sell(Player player, Material material, int amount, double price)
     {
-        player.sendMessage(MiniMessage.get().parse(
+        Economy econ = VillagerUI.getEcon();
-                "Hi! you sold: " + amount +
+        price *= amount;
-                        " " + material.name() +
+
-                        " for " + price +
+        econ.depositPlayer(player, price);
-                        "."));
+        player.sendMessage(MiniMessage.get().parse(Config.PURCHASED_ITEM,
+                Template.of("amount", String.valueOf(amount)),
+                Template.of("item", material.toString()),
+                Template.of("price", String.valueOf(price))));
     }
 
     private ItemStack getPriceItem(double price) {

src/main/java/com/alttd/VillagerUI.java

@@ -8,16 +8,23 @@ import com.alttd.config.VillagerConfig;
 import com.alttd.config.WorthConfig;
 import com.alttd.events.VillagerInteract;
 import com.alttd.util.Logger;
+import net.milkbowl.vault.economy.Economy;
+import org.bukkit.plugin.RegisteredServiceProvider;
 import org.bukkit.plugin.java.JavaPlugin;
 
 public class VillagerUI extends JavaPlugin {
 
     public static VillagerUI instance;
+    private static Economy econ = null;
 
     public static VillagerUI getInstance() {
         return instance;
     }
 
+    public static Economy getEcon() {
+        return econ;
+    }
+
     @Override
     public void onLoad() {
         instance = this;
@@ -30,6 +37,11 @@ public class VillagerUI extends JavaPlugin {
         Config.reload();
         VillagerConfig.reload();
         WorthConfig.reload();
+        if (!setupEconomy()) {
+            Logger.severe("% - Unable to find vault", getDescription().getName());
+            getServer().getPluginManager().disablePlugin(this);
+            return;
+        }
         Database.init();
         Logger.info("--------------------------------------------------");
         Logger.info("Villager UI started");
@@ -41,4 +53,13 @@ public class VillagerUI extends JavaPlugin {
         getServer().getPluginManager().registerEvents(new VillagerInteract(), this);
     }
 
+    private boolean setupEconomy() {
+        if (getServer().getPluginManager().getPlugin("Vault") == null) return false;
+        RegisteredServiceProvider<Economy> rsp = getServer().getServicesManager().getRegistration(Economy.class);
+        if (rsp == null) return false;
+        econ = rsp.getProvider();
+
+        return econ != null;
+    }
+
 }

src/main/java/com/alttd/config/Config.java

@@ -80,6 +80,12 @@ public final class Config extends AbstractConfig {
         VILLAGER_NAME = config.getString("idkyet.villager-name", VILLAGER_NAME); //TODO change path
     }
 
+    public static final String NOT_ENOUGH_MONEY = "<red>You only have $<money>, you need at least $<price> for this purchase.</red>";
+    public static final String PURCHASED_ITEM = "<green>You bought <amount> <item> for <price>!</green>";
+    private static void loadMessages() {
+
+    }
+
     private static void loadVillagerTypes() {
         VillagerType.clearVillagerTypes();
         ConfigurationSection configurationSection = config.getConfigurationSection("villager-types");