using System;
using System.Collections.Generic;
using Cielonos.MainGame.Effects.Feedback;
using MoreMountains.Feedbacks;
using SLSUtilities.Feedback;
using SLSUtilities.FeelAssistance;
using UnityEngine;

namespace Cielonos.MainGame.Characters.Inventory
{
    public class FeedbackSubcontroller : SubcontrollerBase<ItemBase>
    {
        // === 旧系统（Feel）—— 保留向后兼容 ===
        public Dictionary<string, FeedbackUnit> feedbacks;
        public FeedbackUnit this[string feedbackName] => feedbacks.GetValueOrDefault(feedbackName, null);

        // === 新系统（Feedback System）===
        public FeedbackDataCollection feedbackDataCollection;

        private CharacterFeedbackTimeProvider _timeProvider;
        private readonly List<FeedbackPlayer> _activePlayers = new List<FeedbackPlayer>(8);

        public override void Initialize()
        {
            base.Initialize();
            if (owner?.player != null)
            {
                _timeProvider = new CharacterFeedbackTimeProvider(owner.player);
            }
        }

        /// <summary>
        /// 通过新系统播放一个 FeedbackData。
        /// </summary>
        public FeedbackPlayer PlayFeedback(FeedbackData data, bool stopPrevious = false)
        {
            if (data == null) return null;

            if (stopPrevious)
            {
                StopFeedback(data);
            }

            Transform ownerTransform = owner?.player?.transform;
            var player = new FeedbackPlayer(data, _timeProvider, ownerTransform);
            player.Play();
            _activePlayers.Add(player);
            return player;
        }

        /// <summary>
        /// 通过名称从 FeedbackDataCollection 中查找并播放。
        /// </summary>
        public FeedbackPlayer PlayFeedback(string name, bool stopPrevious = false)
        {
            if (feedbackDataCollection == null)
            {
                Debug.LogWarning($"[Item.FeedbackSubcontroller] feedbackDataCollection is null on {owner?.name}.");
                return null;
            }

            if (!feedbackDataCollection.TryGet(name, out FeedbackData data))
            {
                Debug.LogWarning($"[Item.FeedbackSubcontroller] FeedbackData '{name}' not found on {owner?.name}.");
                return null;
            }

            return PlayFeedback(data, stopPrevious);
        }

        /// <summary>
        /// 停止指定 FeedbackData 的所有活跃播放器。
        /// </summary>
        public void StopFeedback(FeedbackData data)
        {
            for (int i = _activePlayers.Count - 1; i >= 0; i--)
            {
                if (_activePlayers[i].Data == data)
                {
                    _activePlayers[i].Stop();
                    _activePlayers.RemoveAt(i);
                }
            }
        }

        /// <summary>
        /// 停止所有活跃的新系统播放器。
        /// </summary>
        public void StopAllFeedbacks()
        {
            for (int i = _activePlayers.Count - 1; i >= 0; i--)
            {
                _activePlayers[i].Stop();
            }
            _activePlayers.Clear();
        }

        private void Update()
        {
            // 旧系统驱动
            if (feedbacks != null)
            {
                foreach (var feedbackUnit in feedbacks.Values)
                {
                    float timeScaleMultiplier = owner.player.selfTimeSm.TimeScale;
                    feedbackUnit.feedback.ExternalTimeScale = timeScaleMultiplier;
                    feedbackUnit.Update();
                }
            }

            // 新系统驱动
            float dt = Time.unscaledDeltaTime;
            for (int i = _activePlayers.Count - 1; i >= 0; i--)
            {
                FeedbackPlayer player = _activePlayers[i];
                player.Tick(dt);

                if (player.IsCompleted || !player.IsActive)
                {
                    _activePlayers.RemoveAt(i);
                }
            }
        }
    }
}