using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading.Tasks;
using DG.Tweening;
using UnityEngine;
using UnityEngine.Splines;

public class TurnCardManager : MonoBehaviour
{
    [SerializeField] private Collider2D areaCollider2D;
    [SerializeField] private SplineContainer splineContainer;
    private Camera mainCamera;
    private TurnManagerSingleton turnSingleton;
    private CardManagerStateEnum cardManagerState;
    private readonly List<Card> handCardList = new List<Card>();
    private float moveAnimationDuration;
    private float dragAnimationDuration;
    private float dropAnimationDuration;
    private Transform handCardContainer;
    private bool isSetup;
    private bool lockOneCardBeingUsed = false; // 是否锁定一个卡牌正在使用
    private Vector3 dropCardWorldPosition;
    private CardManagerStateEnum actionRecordState;

    private enum CardManagerStateEnum
    {
        WAIT,
        DEAL_CARD,
        DROP_CARD,
        DRAG_CARD,
    }

    public void SetupCardManager(float moveDuration, Transform parentContainer, float dragDuration, RectTransform dropCardUI,
        float dropCardDuration)
    {
        if (isSetup) return;
        if (turnSingleton == null) turnSingleton = TurnManagerSingleton.Instance;
        if (mainCamera == null) mainCamera = Camera.main;
        moveAnimationDuration = moveDuration;
        handCardContainer = parentContainer;
        dragAnimationDuration = dragDuration;
        dropAnimationDuration = dropCardDuration;
        RectTransformUtility.ScreenPointToWorldPointInRectangle(
            rect: dropCardUI,
            screenPoint: dropCardUI.position,
            cam: mainCamera,
            out dropCardWorldPosition);
        isSetup = true;
    }

    public bool SetLockOneCardBeingUsed(bool isLock) => lockOneCardBeingUsed = isLock;
    public bool GetLockOneCardBeingUsed() => lockOneCardBeingUsed;

    private CardManagerStateEnum GetCardManagerState() => cardManagerState;

    public bool GetCardManagerStateIsWait()
    {
        if (GetCardManagerState() != CardManagerStateEnum.WAIT)
        {
            turnSingleton.PrintErrorMsg("CardManager", "Error", $"CardManagerState = [{GetCardManagerState()}], Need State = [Wait]");
            return false;
        }

        if (GetLockOneCardBeingUsed())
        {
            turnSingleton.PrintErrorMsg("CardManager", "Error", "One Card is being used");
            return false;
        }

        return true;
    }


    private void SetCardManagerState(CardManagerStateEnum state) => cardManagerState = state;

    public void DropCardAllFromHand()
    {
        if (turnSingleton.GetNeedDebugLog()) turnSingleton.PrintMsg("CardManager", "动作切换", "开始弃牌");
        StartCoroutine(coroutine());
        return;

        IEnumerator coroutine()
        {
            SetCardManagerState(CardManagerStateEnum.DROP_CARD);
            foreach (var card in handCardList)
            {
                Sequence tweenAnimation = card.CardGotoDrop(dropCardWorldPosition, dropAnimationDuration);
                yield return tweenAnimation.WaitForCompletion();
            }

            handCardList.Clear();
            SetCardManagerState(CardManagerStateEnum.WAIT);
            TurnManagerEvent.CallTurnManagerEnterEnemyTurn();
        }
    }

    public void TakeCard(int number)
    {
        if (turnSingleton.GetNeedDebugLog()) turnSingleton.PrintMsg("CardManager", "动作切换", $"开始抽卡:{number}");
        SetCardManagerState(CardManagerStateEnum.DEAL_CARD);
        StartCoroutine(enumerator());
        return;

        IEnumerator enumerator()
        {
            for (int i = 0; i < number; i++)
            {
                Card card = turnSingleton.TakeOutOneCard();
                card.SetAreaCollider2D(areaCollider2D, dragAnimationDuration);
                handCardList.Add(card);
                if (turnSingleton.GetNeedDebugLog()) print($"[CardManager][抽卡ID]: {card.GetID(isInstance: true)}");
                ReadjustCardPosition();
                yield return new WaitForSeconds(moveAnimationDuration);
            }

            SetCardManagerState(CardManagerStateEnum.WAIT);
            TurnManagerEvent.CallTurnManagerStaySelfTurn();
        }
    }


    private void ReadjustCardPosition() // 重新调整卡牌位置
    {
        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

        for (int i = 0; i < handCardList.Count; i++)
        {
            float position = firstCardPosition + i * cardSpacing;
            Vector3 cardWorldPosition = spline.EvaluatePosition(position); // 获取曲线指定位置的坐标
            cardWorldPosition += handCardContainer.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);
            Card handCard = handCardList[i];
            handCard.GetTweenMoveCardGoHand(movePosition: cardWorldPosition, doRotation: rotation,
                doDuration: moveAnimationDuration, doLayerSortOrder: i + 1, cardContainer: handCardContainer);
        }
    }
}