using System;
using System.Collections;
using System.Collections.Generic;
using DG.Tweening;
using TMPro.EditorUtilities;
using UnityEngine;
using UnityEngine.Android;
using UnityEngine.Splines;

public class CardManager2 : MonoBehaviour
{
    // ======== serializeField ========
    [SerializeField] private int defaultDeckNumber = 21; // 默认牌组数量
    [SerializeField] private int defaultCardNumber = 5; // 默认手牌数量

    // [SerializeField] private int maxCardNumber = 9; // 最大卡牌数量
    [SerializeField] private List<GameObject> cardPrefabs;
    [SerializeField] private SplineContainer splineContainer;
    [SerializeField] private RectTransform dealCardPlace;
    [SerializeField] private Camera mainCamera;
    [SerializeField] private Transform cardContainer;
    [SerializeField] private float cardShuffleDuration = 0.25f;
    [SerializeField] private float cardDropDuration = 0.2f;

    // ======== private ========
    // private readonly List<CardHandler> hand_card_list = new List<CardHandler>();
    private readonly List<Card> handCardList = new();
    private Vector3 deal_card_point_world_position;

    private void Start()
    {
        RectTransformUtility.ScreenPointToWorldPointInRectangle(
            rect: dealCardPlace,
            screenPoint: dealCardPlace.position,
            cam: mainCamera,
            out deal_card_point_world_position);
        REGISTER_EVENT_SELF_TURN_START();
    }


    private void REGISTER_EVENT_SELF_TURN_START() // 系统开始乙方回合
    {
        StartCoroutine(coroutine());

        IEnumerator coroutine()
        {
            for (var i = 0; i < defaultCardNumber; i++)
            {
                create_a_card(0.25f);
                yield return new WaitForSeconds(0.25f);
            }
        }
    }


    private void create_a_card(float duration)
    {
        GameObject _card = Instantiate<GameObject>(
            cardPrefabs[UnityEngine.Random.Range(0, cardPrefabs.Count)],
            position: deal_card_point_world_position,
            rotation: Quaternion.identity,
            parent: cardContainer);
        _card.SetActive(true);
        _card.gameObject.name = $"Card_{handCardList.Count}";
        Card cardComponent = _card.GetComponent<Card>();
        handCardList.Add(cardComponent);
        draw_a_card(duration);
    }

    private void draw_a_card(float duration)
    {
        int handCardListCount = handCardList.Count;
        if (handCardListCount == 0) return;
        float cardSpacing = handCardListCount switch // 动态调整卡牌间距
        {
            <= 4 => 0.5f / (handCardListCount + 1),
            <= 5 => 0.75f / (handCardListCount + 1),
            _ => 1f / (handCardListCount + 1)
        };

        float firstCardPosition = 0.5f - (handCardListCount - 1) * cardSpacing / 2; // 获取第一个卡牌的位置
        Spline spline = splineContainer.Spline; // 获取曲线
        draw_card();
        return;

        void draw_card()
        {
            for (int i = 0; i < handCardListCount; i++)
            {
                float position = firstCardPosition + i * cardSpacing;
                Vector3 cardWorldPosition = spline.EvaluatePosition(position); // 获取曲线指定位置的坐标
                cardWorldPosition += cardContainer.position;
                Vector3 forward = spline.EvaluateTangent(position); // 获取曲线指定的切线方向
                Vector3 up = spline.EvaluateUpVector(position); // 获取曲线指定的UP向量
                Vector3 upwards = Vector3.Cross(up, forward).normalized; // 切线和向上的夹角计算方向
                Quaternion rotation = Quaternion.LookRotation(up, upwards);
                handCardList[i].GetComponent<Card>().GetTweenMoveCardGoHand(movePosition: cardWorldPosition, doRotation: rotation,
                    doDuration: duration, doLayerSortOrder: i + 1, cardContainer: cardContainer);
            }
        }
    }
}