using System.Collections;
using UnityEngine;
using MoreMountains.Tools;
using BaseGames.Player;

namespace BaseGames.World
{
    /// <summary>
    /// 能力解锁触发物（Prefab）。
    /// 玩家进入触发区后播放解锁演出，然后调用 PlayerStats.UnlockAbility()。
    /// </summary>
    [RequireComponent(typeof(Collider2D))]
    public class AbilityUnlock : MonoBehaviour
    {
        [Header("解锁配置")]
        [SerializeField] private AbilityType _abilityToUnlock;
        [SerializeField] private bool        _destroyAfterUnlock = true;

        [Header("演出配置")]
        [SerializeField] private Component   _unlockFeedback;     // Assign MMF_Player or compatible component
        [SerializeField] private float       _cutsceneDuration = 1.5f;

        [Header("Event Channel")]
        [SerializeField] private AbilityTypeEventChannelSO _onAbilityUnlocked; // EVT_AbilityUnlocked

        private bool _used;

        private void OnTriggerEnter2D(Collider2D other)
        {
            if (_used || !other.CompareTag("Player")) return;
            var stats = other.GetComponentInParent<PlayerStats>();
            if (stats == null || stats.HasAbility(_abilityToUnlock)) return;
            StartCoroutine(UnlockSequence(stats));
        }

        private IEnumerator UnlockSequence(PlayerStats stats)
        {
            _used = true;

            PlayFeedback(_unlockFeedback);
            yield return new WaitForSeconds(_cutsceneDuration);

            stats.UnlockAbility(_abilityToUnlock);
            _onAbilityUnlocked?.Raise(_abilityToUnlock);

            if (_destroyAfterUnlock)
                Destroy(gameObject);
        }

        private static void PlayFeedback(Component feedback)
        {
            if (feedback == null) return;
            var method = feedback.GetType().GetMethod("PlayFeedbacks", System.Type.EmptyTypes);
            method?.Invoke(feedback, null);
        }
    }
}