using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class TurnHandlerDropCard : MonoBehaviour
{
    // ======== serializeField ========
    [SerializeField] private RectTransform dropCardPlace;
    [SerializeField] private Camera mainCamera;
    [SerializeField] private float cardDropDuration = 0.2f;

    // ======== private ========
    private Vector3 drop_card_point_world_position;
    private CombatScenarioEventOS EventOS;

    private void Awake()
    {
        EventOS = CombatScenarioEventOS.Instance;
        REGISTER_EVENT_drop_card();
    }

    private void Start()
    {
        if (mainCamera == null) mainCamera = Camera.main;
        RectTransformUtility.ScreenPointToWorldPointInRectangle(
            rect: dropCardPlace,
            screenPoint: dropCardPlace.position,
            cam: mainCamera,
            out drop_card_point_world_position);
    }

    private void REGISTER_EVENT_drop_card() // 系统弃牌
    {
        EventOS.EVENT_REGISTER<bool>(EVENT_ENUM.EVENT_LET_OS_DROP_CARD, callback);
        return;

        void callback(bool placeholder)
        {
            if (EventOS.LOCK_GET(EVENT_EXCLUSIVE_LOCK.LOCK_OS_DEAL_CARD)) return; // 系统是否正在发牌
            if (!EventOS.LOCK_APPLY(EVENT_EXCLUSIVE_LOCK.LOCK_OS_DROP_CARD)) return; // 系统弃牌加锁失败
            StartCoroutine(coroutine());
            return;


            IEnumerator coroutine()
            {
                if (handCardList.Count > 0)
                {
                    // for (var i = handCardList.Count; i >= 0; i--)
                    for (var i = 0; i < handCardList.Count; i++)
                    {
                        EventOS.EVENT_TRIGGER(EventData.EVENT_REGISTER_EVENT_ENUM.EVENT_LET_CARD_DROP_SELF,
                            new EventStruct.STRUCT_EVENT_DROP_CARD
                            {
                                ID = i,
                                POSITION = drop_card_point_world_position,
                                DURATION = cardDropDuration,
                            });
                        yield return new WaitForSeconds(cardDropDuration);
                    }
                }

                handCardList.Clear(); // 清空
                EventOS.LOCK_RELEASE(EventLock.LOCK_EXCLUSIVE_CARD_ENUM.LOCK_OS_DROP_CARD);
                // REGISTER_EVENT_ENEMY_TURN_START();
            }
        }
    }
}