using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.UI;

public class CardArea : MonoBehaviour
{
    [SerializeField] private AudioManager audio;
    [SerializeField] private Card selectedCard;
    [SerializeField] private GameObject slotPrefab;

    [SerializeField] private Dictionary<Card, GameObject> _cardSlotMapping = new Dictionary<Card, GameObject>();
    
    private void OnTriggerEnter2D(Collider2D other)
    {
        if (other.gameObject.TryGetComponent(out Card card)
            && card.IsDragging
            && !_cardSlotMapping.Keys.Contains(card))
        {
            StartCoroutine(WaitTriggerEnter());
            card.HoveringArea = this;
        }
    }

    IEnumerator WaitTriggerEnter()
    {
        yield return 0;
    }

    private void OnTriggerExit2D(Collider2D other)
    {
        if (other.gameObject.TryGetComponent(out Card card)
            && card.IsDragging
            && !_cardSlotMapping.Keys.Contains(card))
        {
            card.HoveringArea = null;
        }
    }

    public void AddCardToArea(Card card)
    {
        GameObject slot = Instantiate(slotPrefab, transform);
        _cardSlotMapping[card] = slot;
        card.SetSlot(slot);
        card.SetParentArea(this);
        RefreshLayout();
        audio.Play("playcard");
    }

    public void RemoveCardFromArea(Card card)
    {
        Destroy(_cardSlotMapping[card]);
        _cardSlotMapping.Remove(card);
        RefreshLayout();
    }

    private void RefreshLayout()
    {
        LayoutRebuilder.ForceRebuildLayoutImmediate(GetComponent<RectTransform>());
        StartCoroutine(MoveCardsNextFrame());
    }
    
    private IEnumerator MoveCardsNextFrame()
    {
        yield return null; // Waits until the next frame
        foreach (Card card in _cardSlotMapping.Keys)
        {
            card.MoveToSlot();
        }
    }
}