package xyz.etztech.qol.listeners;

import com.nisovin.shopkeepers.api.ShopkeepersPlugin;
import com.nisovin.shopkeepers.api.shopkeeper.ShopkeeperRegistry;
import com.nisovin.shopkeepers.api.shopkeeper.admin.regular.RegularAdminShopkeeper;
import com.nisovin.shopkeepers.api.shopkeeper.offers.TradeOffer;
import org.bukkit.Material;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerJoinEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.SkullMeta;
import xyz.etztech.qol.QoL;

import java.util.ArrayList;
import java.util.List;

public class HeadShopListener implements Listener{

    private final QoL plugin;
    private final ShopkeepersPlugin shopkeepersAPI;

    public HeadShopListener(QoL plugin) {
        this.plugin = plugin;
        plugin.getServer().getPluginManager().registerEvents(this, plugin);

        this.shopkeepersAPI = ShopkeepersPlugin.getInstance();
    }

    @EventHandler
    public void onJoin(PlayerJoinEvent event) {
        final Player player = event.getPlayer();

        if (shopkeepersAPI != null && player.hasPermission("qol.head_shop")) {
            int shopKeeperID = plugin.getConfig().getInt("head_shop.id", -1);

            if (shopKeeperID != -1) {
                ShopkeeperRegistry shopkeeperRegistry = shopkeepersAPI.getShopkeeperRegistry();
                RegularAdminShopkeeper donorHeadShop =  (RegularAdminShopkeeper) shopkeeperRegistry.getShopkeeperById(shopKeeperID);

                if (donorHeadShop != null) {
                    // Remove the head if it already exists. This is done to refresh the skin of the head.
                    List<? extends TradeOffer> tradeOffers = new ArrayList<>(donorHeadShop.getOffers());
                    tradeOffers.removeIf(tradeOffer -> {
                        SkullMeta itemOfferMeta = (SkullMeta)tradeOffer.getResultItem().getItemMeta();
                        return itemOfferMeta.getOwningPlayer().getUniqueId() == player.getUniqueId();
                    });

                    donorHeadShop.setOffers(tradeOffers);

                    // Add the head to the shop
                    int diamondPrice = plugin.getConfig().getInt("head_shop.price", 2);
                    ItemStack playerHead = new ItemStack(Material.PLAYER_HEAD);
                    SkullMeta skullMeta = (SkullMeta) playerHead.getItemMeta();

                    skullMeta.setOwningPlayer(player);
                    skullMeta.setDisplayName(player.getDisplayName());
                    playerHead.setItemMeta(skullMeta);

                    TradeOffer donorHeadTrade = TradeOffer.create(playerHead, new ItemStack(Material.DIAMOND, diamondPrice), null);

                    donorHeadShop.addOffer(donorHeadTrade);
                }
            }
        }
    }
}