package dev.zontreck.ase.guis;

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

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.InventoryView;
import org.bukkit.inventory.ItemStack;

import dev.zontreck.ase.AriasServerEssentials;
import net.kyori.adventure.text.Component;

public class ChestGUI {
    // START STATIC REGISTRY
    public static final List<ChestGUI> GUI_LIST = new java.util.ArrayList<>();

    public static void register(ChestGUI gui) {
        GUI_LIST.add(gui);
    }

    public static void checkValidity() {
        Iterator<ChestGUI> it = GUI_LIST.iterator();

        while (it.hasNext()) {
            ChestGUI gui = it.next();
            if (!gui.valid()) {

                AriasServerEssentials.getSelf().getLogger().info("A gui has been invalidated, removing from caches");
                it.remove();
            }
        }
    }

    public static ChestGUI getGUIForPlayer(Player player) {
        for (ChestGUI gui : GUI_LIST) {
            if (gui.player != null && gui.player.getUniqueId().equals(player.getUniqueId())) {
                return gui;
            }
        }

        AriasServerEssentials.getSelf().getLogger().info("No such GUI, returning null");
        return null;
    }

    public static void onTick() {
        checkValidity();
    }
    // END STATIC REGISTRY

    public String guiTitle;
    public List<ItemStack> buttons = new ArrayList<>();
    public int totalSize;
    public Player player;
    public boolean closed = false;

    public ChestGUI(String title, int size) {
        this.guiTitle = title;
        this.totalSize = size;
    }

    public void setPlayer(Player player) {
        this.player = player;
    }

    public void fill(int amount, PrimitiveItem item) {
        for (int i = 0; i < amount; i++) {
            buttons.add(item.generate());
        }
    }

    public void add(PrimitiveItem item) {
        buttons.add(item.generate());
    }

    /**
     * This method presents the GUI to the player, using the defined layout above.
     */
    public void doPresentation() {
        Inventory inv = Bukkit.createInventory(null, totalSize, Component.text(guiTitle));

        for (int i = 0; i < buttons.size(); i++) {
            inv.setItem(i, buttons.get(i));
        }

        player.openInventory(inv);
        register(this);
    }

    public void close() {
        // Assume the player is still in this GUI if it has not been invalidated.
        if (valid()) {
            player.closeInventory();
            closed = true;
        } else {
            closed = true; // Ensure this is set to true.
        }
    }

    public boolean valid() {
        if (player == null) {
            return false;
        }

        if (closed)
            return false;

        InventoryView inv = player.getOpenInventory();
        if (inv == null) {
            return false;
        }

        if (inv.title().toString().contains(guiTitle)) {
            return true;
        } else {
            return false;
        }
    }
}