using System;
using System.Collections;
using System.Collections.Generic;
using DG.Tweening;
using UnityEngine;

public class Card : MonoBehaviour
{
    // ========= serializeField ========
    [SerializeField] private int ID;
    [SerializeField] private int instanceID;

    // ========= private =========
    private Collider2D areaCollider2D;
    private TurnManagerSingleton turnSingleton;
    private SpriteRenderer spriteRender;
    private Canvas canvas;
    private SpriteRenderer cardBackgroundUI;
    private CardTransformFromHand cardTransformFromHand = new CardTransformFromHand();
    private CardHandleState cardState;
    private bool isSetup = false;
    private Camera mainCamera;
    private readonly int zoomInLayerSortOrder = 100;
    private float zoomInAnimationDuration;
    private float dragTimer = 0f;
    private readonly float dragTriggerTimer = 0.3f;

    private struct CardTransformFromHand // 存储卡牌处于手中时的位置信息
    {
        public Vector3 POSITION;
        public Quaternion ROTATION;
        public Vector3 SCALE;
        public int LAYER_SORT_ORDER;
    }

    private enum CardHandleState
    {
        WAIT = 0,
        DRAG_BASIC = 1,
        DRAG_OUTSIDE_HAND = 2,
        DRAG_INSIDE_HAND = 3
    }

    public int GetID(bool isInstance) => isInstance ? instanceID : ID;

    public void SetAreaCollider2D(Collider2D collider2, float dragDuration)
    {
        areaCollider2D = collider2;
        zoomInAnimationDuration = dragDuration;
    }

    public void UnSetAreaCollider2D() => areaCollider2D = null;


    public void SetupCard(int id, Camera camera1)
    {
        if (isSetup) return;
        if (!turnSingleton) turnSingleton = TurnManagerSingleton.Instance;
        if (!spriteRender) spriteRender = GetComponent<SpriteRenderer>();
        if (!cardBackgroundUI) cardBackgroundUI = transform.GetChild(0).GetComponent<SpriteRenderer>();
        if (!canvas) canvas = transform.GetChild(1).GetComponent<Canvas>();
        cardTransformFromHand.SCALE = transform.localScale;
        transform.localScale = Vector3.zero;
        instanceID = id;
        cardState = CardHandleState.WAIT;
        mainCamera = camera1;
        isSetup = true;
    }

    private void OnMouseDown()
    {
        if (turnSingleton.GetCardManagerLockOneCardBeingUsed()) return;
        cardState = CardHandleState.DRAG_BASIC;
        turnSingleton.SetCardManagerLockOneCardBeingUsed(true);
        dragTimer = 0f;
    }

    private void OnMouseUp()
    {
        dragTimer = 0f;
        Sequence seq = DOTween.Sequence();
        seq.Join(transform.DOMove(cardTransformFromHand.POSITION, zoomInAnimationDuration));
        seq.Join(transform.DOScale(cardTransformFromHand.SCALE, zoomInAnimationDuration));
        seq.Join(transform.DORotateQuaternion(cardTransformFromHand.ROTATION, zoomInAnimationDuration));
        seq.OnComplete(() => turnSingleton.SetCardManagerLockOneCardBeingUsed(false));
        spriteRender.sortingOrder = cardTransformFromHand.LAYER_SORT_ORDER;
        cardBackgroundUI.sortingOrder = cardTransformFromHand.LAYER_SORT_ORDER - 1;
        canvas.sortingOrder = cardTransformFromHand.LAYER_SORT_ORDER + 1;
        cardState = CardHandleState.WAIT;
    }

    private void OnMouseDrag()
    {
        if (cardState == CardHandleState.WAIT) return;
        Vector3 mousePosition = mainCamera.ScreenToWorldPoint(Input.mousePosition);
        mousePosition.z = 0f;
        bool isInsideHandCardArea = areaCollider2D.OverlapPoint(mousePosition);
        if (isInsideHandCardArea)
            OnMouseDragInsideHandCardArea();
        else
            OnMouseDragOutsizeHandCardArea(mousePosition);
    }

    private void OnMouseDragInsideHandCardArea()
    {
        if (cardState == CardHandleState.DRAG_INSIDE_HAND) return;
        dragTimer += Time.deltaTime;
        if (dragTimer >= dragTriggerTimer)
        {
            cardState = CardHandleState.DRAG_INSIDE_HAND;
            Sequence seq = DOTween.Sequence();
            seq.Join(transform.DOMove(Vector3.zero, zoomInAnimationDuration));
            seq.Join(transform.DOScale(cardTransformFromHand.SCALE * 2f, zoomInAnimationDuration));
            seq.Join(transform.DORotateQuaternion(Quaternion.identity, zoomInAnimationDuration));
            spriteRender.sortingOrder = zoomInLayerSortOrder;
            cardBackgroundUI.sortingOrder = zoomInLayerSortOrder - 1;
            canvas.sortingOrder = zoomInLayerSortOrder + 1;
        }
    }

    private void OnMouseDragOutsizeHandCardArea(Vector3 mousePosition)
    {
        dragTimer = 0f;
        cardState = CardHandleState.DRAG_OUTSIDE_HAND;
        transform.localScale = cardTransformFromHand.SCALE / 3f;
        transform.position = mousePosition;
    }


    public Sequence GetTweenMoveCardGoDeck(Vector3 doGoPosition, Quaternion doGoRotation, Vector3 doGoScale, float doGoDuration)
    {
        transform.localScale = Vector3.zero;
        gameObject.SetActive(true);
        Sequence seq = DOTween.Sequence();
        seq.Pause();
        seq.Join(transform.DOMove(doGoPosition, doGoDuration));
        seq.Join(transform.DOScale(doGoScale, doGoDuration));
        seq.Join(transform.DORotateQuaternion(doGoRotation, doGoDuration));
        return seq;
    }


    public void GetTweenMoveCardGoHand(Vector3 movePosition, Quaternion doRotation, float doDuration, int doLayerSortOrder,
        Transform cardContainer)
    {
        transform.SetParent(cardContainer);
        gameObject.SetActive(true);
        movePosition.z = -doLayerSortOrder * 0.5f;
        spriteRender.sortingOrder = doLayerSortOrder * 3;
        cardBackgroundUI.sortingOrder = doLayerSortOrder * 3 - 1;
        canvas.sortingOrder = doLayerSortOrder * 3 + 1;
        Sequence seq = DOTween.Sequence();
        seq.Join(transform.DOMove(movePosition, doDuration));
        seq.Join(transform.DOScale(cardTransformFromHand.SCALE, doDuration));
        seq.Join(transform.DORotateQuaternion(doRotation, doDuration));
        seq.OnComplete(() => // 记录默认数值
        {
            cardTransformFromHand.POSITION = movePosition;
            cardTransformFromHand.ROTATION = doRotation;
            cardTransformFromHand.LAYER_SORT_ORDER = doLayerSortOrder * 3;
        });
    }
}