ItemEconomy/src/main/java/io/github/adrianvic/itemeconomy/Main.java

package io.github.adrianvic.itemeconomy;

import java.util.*;

import io.github.adrianvic.itemeconomy.commands.Balance;
import io.github.adrianvic.itemeconomy.commands.Pay;
import io.github.adrianvic.itemeconomy.commands.Reload;
import net.milkbowl.vault.economy.Economy;
import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.ServicePriority;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin {
    private static Main instance;
    private static Economy economy;

    public void onEnable() {
        instance = this;
        Config.loadConfig(new UnrealConfig(this, this.getDataFolder(), "config.yml"));
        getLogger().info(Messages.ENABLING.get(
                "ItemEconomy",
                getDescription().getVersion(),
                Config.getServerLocale()
        ));
        economy = new VaultLayer();
        Bukkit.getServicesManager().register(Economy.class, economy, this, ServicePriority.High);

        getCommand("itecoreload").setExecutor(new Reload());
        if (Config.safeIs("commands", "true")) {
            getCommand("balance").setExecutor(new Balance());
            getCommand("pay").setExecutor(new Pay());
        }
    }

    public void onDisable() {
        super.onDisable();
    }

    public static JavaPlugin getInstance() {
        return instance;
    }

    public static Economy getEconomy() {
        return economy;
    }

    public enum InventoryID {
        INVENTORY,
        ENDER_CHEST
    }

    public static Inventory getInventory(Player player, InventoryID inventory) {
        Inventory inv = player.getInventory();

        switch (inventory) {
            case INVENTORY -> inv = player.getInventory();
            case ENDER_CHEST -> {
                if (Config.is("ender_chest", "balance")) {
                    inv = player.getEnderChest();
                } else {
                    inv = getInstance().getServer().createInventory(null, 9);
                }
            }
        }

        return inv;
    }

    public static List<ItemStack> getInventoryList(Player player, InventoryID inventory) {
        Inventory inv = getInventory(player, inventory);
        return Arrays.stream(inv.getContents()).map((o) -> o == null ? new ItemStack(Material.AIR) : o).toList();
    }

    public static List<ItemStack> getInventoryList(Player player) {
        return getInventoryList(player, InventoryID.INVENTORY);
    }

    public static double getBalance(Player player, InventoryID inventory) {
        return getInventoryList(player, inventory).stream().filter(Objects::nonNull).filter((i) -> i.getType().equals(Config.ecoItem())).mapToInt(ItemStack::getAmount).sum();
    }

    public static double getBalance(Player player) {
        double total = 0.0D;

        for (InventoryID id : InventoryID.values()) {
            total += getBalance(player, id);
        }

        return total;
    }

    public static double getBalance(String player) {
        return getBalance(Bukkit.getPlayer(player));
    }

    public static boolean removeItems(Player player, Material type, int amount) {
        int remaining = amount;

        remaining = removeFrom(player.getInventory(), type, remaining);
        if (remaining > 0) {
            remaining = removeFrom(player.getEnderChest(), type, remaining);
        }

        return remaining == 0;
    }

    private static int removeFrom(Inventory inv, Material type, int amount) {
        if (amount <= 0) return 0;

        for (ItemStack stack : inv.all(type).values()) {
            int take = Math.min(stack.getAmount(), amount);
            stack.setAmount(stack.getAmount() - take);
            amount -= take;
            if (amount == 0) break;
        }

        return amount;
    }

    public static void addItems(Player player, Material type, int amount) {
        if (amount <= 0) return;

        HashMap<Integer, ItemStack> invOverflow =
                getInventory(player, InventoryID.INVENTORY)
                        .addItem(new ItemStack(type, amount));

        int overflowAmount = invOverflow.values()
                .stream()
                .mapToInt(ItemStack::getAmount)
                .sum();

        if (overflowAmount <= 0) {
            return;
        }

        HashMap<Integer, ItemStack> echestOverflow =
                getInventory(player, InventoryID.ENDER_CHEST)
                        .addItem(new ItemStack(type, overflowAmount));

        for (ItemStack overflow : echestOverflow.values()) {
            player.getWorld().dropItemNaturally(player.getLocation(), overflow);
        }
    }
}