using BaseGames.Combat;
using BaseGames.Core;
using BaseGames.Core.Save;
using MoreMountains.Feedbacks;
using UnityEngine;

namespace BaseGames.World
{
    /// <summary>
    /// 假墙（秘密通道）。外观与普通墙相同，可通过攻击/接近揭示并穿越。
    /// 揭示后禁用碰撞体（不销毁），状态持久化到 WorldSaveData。
    /// </summary>
    [RequireComponent(typeof(Collider2D))]
    public class FalseWall : MonoBehaviour, IDamageable, ISaveable
    {
        public enum RevealCondition { Proximity, AttackOnce, AlwaysOpen }

        [Header("识别")]
        [SerializeField] private string          _wallId;

        [Header("揭示条件")]
        [SerializeField] private RevealCondition _revealCondition  = RevealCondition.AttackOnce;
        [SerializeField] private float           _proximityRadius  = 2.0f;

        [Header("组件引用")]
        [SerializeField] private Collider2D      _wallCollider;
        [SerializeField] private SpriteRenderer  _renderer;
        [SerializeField] private MMF_Player      _revealFeedback;

        private bool _isRevealed;

        // ── IDamageable ───────────────────────────────────────────────────────
        public bool IsInvincible => _isRevealed;
        public int  Defense      => 0;

        public void TakeDamage(DamageInfo info)
        {
            if (_isRevealed || _revealCondition != RevealCondition.AttackOnce) return;
            Reveal();
        }

        // ── Unity Lifecycle ───────────────────────────────────────────────────

        private void Awake()
        {
            ServiceLocator.GetOrDefault<ISaveableRegistry>()?.Register(this);
        }

        private void OnDestroy()
        {
            ServiceLocator.GetOrDefault<ISaveableRegistry>()?.Unregister(this);
        }

        private void Start()
        {
            if (_revealCondition == RevealCondition.AlwaysOpen)
            {
                SetPassThroughImmediate();
                _isRevealed = true;
                return;
            }
        }

        // ── ISaveable ─────────────────────────────────────────────────────────
        public void OnSave(SaveData data)
        {
            if (_isRevealed && !string.IsNullOrEmpty(_wallId)
                && !data.World.OpenedDoors.Contains(_wallId))
                data.World.OpenedDoors.Add(_wallId);
        }

        public void OnLoad(SaveData data)
        {
            if (string.IsNullOrEmpty(_wallId)) return;
            _isRevealed = data.World.OpenedDoors.Contains(_wallId);
            if (_isRevealed) SetPassThroughImmediate();
        }

        private void OnTriggerEnter2D(Collider2D other)
        {
            if (_isRevealed || _revealCondition != RevealCondition.Proximity) return;
            if (!other.CompareTag("Player")) return;
            // Proximity 模式：仅播放 Shimmer 暗示，碰撞仍启用
            _revealFeedback?.PlayFeedbacks();
        }

        // ── Implementation ────────────────────────────────────────────────────

        private void Reveal()
        {
            _isRevealed = true;
            _revealFeedback?.PlayFeedbacks();
            SetPassThroughImmediate();
        }

        private void SetPassThroughImmediate()
        {
            if (_wallCollider != null)
                _wallCollider.enabled = false;
            // 切换 Sprite 到透明/揭示帧（由子类或动画处理）
        }

#if UNITY_EDITOR
        private void OnDrawGizmosSelected()
        {
            Gizmos.color = new Color(0.6f, 0.2f, 1f, 0.8f);
            var col = GetComponent<Collider2D>();
            if (col != null)
                Gizmos.DrawWireCube(transform.position, col.bounds.size);

            if (_revealCondition == RevealCondition.Proximity)
            {
                Gizmos.color = new Color(0.6f, 0.2f, 1f, 0.2f);
                Gizmos.DrawWireSphere(transform.position, _proximityRadius);
            }
        }
#endif
    }
}