using System.Collections;
using UnityEngine;
using DG.Tweening;
using Yarn.Unity;
using AibisDream.Framework;
using AibisDream.Kit;
using UnityEngine.Rendering;
using UnityEngine.ResourceManagement.AsyncOperations;

namespace AibisDream.FixSystem
{
    public class MemoryProcess : MonoBehaviour
    {
        private const string MemorySpritePath = "Sprite/Memory/{0}.png";
        private const float FadeMaterialStartValue = -15f;
        private const float DefaultFadeDuration = 1f;
        private const float SearchStartDelay = 1f;
        private const float ProjectorMoveDuration = 2f;

        [SerializeField] private GameObject memoryView;
        [SerializeField] private GameObject projector;
        [SerializeField] private SpriteRenderer memoryFinishedSpriteRenderer; // 用于显示记忆处理结束的表现
        [SerializeField] private SpriteRenderer memoryFinishedImageNoColor; // 用于显示记忆处理结束的表现

        [SerializeField] private Volume mainEffect;
        [SerializeField] private Volume memoryClarityVolume;
        [SerializeField] private Volume memoryFrequencyVolume;
        [SerializeField] private Volume memoryProcessVolume;
        [SerializeField] private MemorySlider frequencySlider; // 频率调节滑动条
        [SerializeField] private MemorySlider claritySlider; // 清晰度调节滑动条

        [SerializeField] private CanvasGroup playBackground;

        [SerializeField] private GameObject memoryGroup;

        private bool isProcessing = false; // 新增变量来追踪是否正在处理记忆
        private bool isPlayingFaderSound = false; // 追踪音效是否正在播放

        private PunchTape _activePunchTape;

        [SerializeField] private MemoryPunchTapeSlot punchTapeSlot;

        [SerializeField] private Material fadeMaterial;

        public void OpenMemoryView()
        {
            memoryGroup.SetActive(true);
            memoryView.gameObject.SetActive(true);

        }

        public IEnumerator DropMemoryProjector()
        {
            DG.Tweening.Sequence zoomInSequence = DOTween.Sequence();
            zoomInSequence.Append(projector.transform.DOLocalMoveY(-5, ProjectorMoveDuration).SetEase(Ease.OutElastic, 0.5f));
            yield return zoomInSequence.WaitForCompletion();
        }

        public void PullMemoryProjector()
        {
            DG.Tweening.Sequence zoomOutSequence = DOTween.Sequence();
            zoomOutSequence.Append(projector.transform.DOLocalMoveY(0, ProjectorMoveDuration).SetEase(Ease.OutElastic, 0.5f));
        }

        public void CloseMemoryView()
        {
            memoryView.gameObject.SetActive(false);
            memoryGroup.SetActive(false);
        }

        public void OnEnter()
        {
            OpenMemoryView();
            PrepareMemoryView();
        }

        public void OnShow()
        {
            Debug.Log("memoryView showed.");
            PrepareMemoryView();
        }

        private void PrepareMemoryView()
        {
            EnsurePunchTapeSlotReference();
            PunchTapeManager.Instance.OpenFavoritesPanel();
            playBackground.gameObject.SetActive(false);
            playBackground.alpha = 0;
        }

        public void OnExit()
        {
            // 停止拉条音频
            if (isPlayingFaderSound)
            {
                AudioManager.Instance.StopSfx("event:/ActionFB/mem_fader");
                isPlayingFaderSound = false;
            }

            PunchTapeManager.Instance.CloseFavoritesPanel();
            CloseMemoryView();
            // 离开视图时的逻辑
            Debug.Log("MemoryView exited.");

            if (frequencySlider != null)
            {
                frequencySlider.SetInteractable(false);
                frequencySlider.LockSlider();
            }
            if (claritySlider != null)
            {
                claritySlider.SetInteractable(false);
                claritySlider.LockSlider();
            }
        }

        private void Awake()
        {
            InitSystem();
        }

        private void EnsurePunchTapeSlotReference()
        {
            if (punchTapeSlot != null) return;
            punchTapeSlot = MemoryPunchTapeSlot.ActiveInstance;
            if (punchTapeSlot == null)
            {
                Debug.LogWarning(
                    "[MemoryProcess] 未配置 MemoryPunchTapeSlot：请在 Inspector 将 punchTapeSlot 赋值为场景中的插槽，或确保存在 MemoryPunchTapeSlot。",
                    this);
            }
        }

        private void InitSystem()
        {
            FixSystemCenter.SystemDic.Register(this);
            if (memoryGroup != null)
                memoryGroup.SetActive(false);
        }


        private void Start()
        {
            frequencySlider.OnFound += CheckAllFound;
            claritySlider.OnFound += CheckAllFound;
            Init();
        }

        private void CheckAllFound()
        {
            if (frequencySlider.IsFound && claritySlider.IsFound)
                OnSearchComplete();
        }

        private float GetRandomNumber()
        {
            // 随机决定选择哪个区间
            if (UnityEngine.Random.value < 0.5f) // 50% 概率选择第一个区间
            {
                return UnityEngine.Random.Range(0.5f, 2f);
            }
            else // 50% 概率选择第二个区间
            {
                return UnityEngine.Random.Range(4f, 5.5f);
            }
        }

        private void OnSearchComplete()
        {
            Debug.Log("Memory search completed.");
            frequencySlider.SetInteractable(false);
            claritySlider.SetInteractable(false);

            // 停止拉条音频
            if (isPlayingFaderSound)
            {
                AudioManager.Instance.StopSfx("event:/ActionFB/mem_fader");
                isPlayingFaderSound = false;
            }

            AudioManager.Instance.SetSfxParam("event:/Amb/amb_mem_tuning", "is_mem_tuning", 0);
            StartCoroutine(PlayMemory());
        }

        public void TweenWeight(Volume postProcessingVolume, float targetWeight, float duration)
        {
            // 动态调整权重
            DOTween.To(() => postProcessingVolume.weight, x => postProcessingVolume.weight = x, targetWeight, duration);
        }

        public void Init()
        {
            isProcessing = false;

            // 停止拉条音频
            if (isPlayingFaderSound)
            {
                AudioManager.Instance.StopSfx("event:/ActionFB/mem_fader");
                isPlayingFaderSound = false;
            }

            if (frequencySlider != null)
                frequencySlider.Init(memoryFrequencyVolume);
            if (claritySlider != null)
                claritySlider.Init(memoryClarityVolume);

            ResetPresentationState();
        }

        /// <summary>
        /// 单条记忆播放结束后的复位：不调用 <see cref="MemorySlider.Init"/>（避免再次锁条并触发打开 Timeline），
        /// 仅禁用拖动；完整 <see cref="MemorySlider.LockSlider"/> 仅在退出 <see cref="MemoryCue"/> 时 <see cref="OnExit"/> 执行。
        /// </summary>
        private void ResetAfterMemoryFinished()
        {
            isProcessing = false;

            if (isPlayingFaderSound)
            {
                AudioManager.Instance.StopSfx("event:/ActionFB/mem_fader");
                isPlayingFaderSound = false;
            }

            if (frequencySlider != null)
                frequencySlider.SetInteractable(false);
            if (claritySlider != null)
                claritySlider.SetInteractable(false);

            ResetPresentationState();
        }

        private void ResetPresentationState()
        {
            if (fadeMaterial != null)
                fadeMaterial.SetFloat("_DirectionalDistortionFade", FadeMaterialStartValue);
            memoryFinishedSpriteRenderer.color = Color.black;
            memoryProcessVolume.weight = 0;
            _activePunchTape = null;

            playBackground.gameObject.SetActive(false);
            playBackground.alpha = 0;
        }

        [YarnCommand("MemoryFinished")]
        public IEnumerator MemoryFinished()
        {
            yield return playBackground.DOFade(0f, DefaultFadeDuration).WaitForCompletion();

            playBackground.gameObject.SetActive(false);

            PunchTapeManager.Instance.OpenFavoritesPanel();

            ResetAfterMemoryFinished();
            EnsurePunchTapeSlotReference();
            if (punchTapeSlot != null && punchTapeSlot.punchTape != null)
            {
                punchTapeSlot.punchTape.used = true;
                punchTapeSlot.ReleaseSlot();
            }
        }

        [YarnCommand("ColorFadeOut")]
        public IEnumerator ColorFadeOut()
        {
            if (fadeMaterial == null) yield break;

            fadeMaterial.SetFloat("_DirectionalDistortionFade", FadeMaterialStartValue);
            Tween tween = fadeMaterial.DOFloat(0, "_DirectionalDistortionFade", 3);
            yield return tween.WaitForCompletion();
        }

        [YarnCommand("PlayMemory")]
        public IEnumerator PlayMemory(bool useYarn = false, string memName = "")
        {
            memoryFinishedSpriteRenderer.color = Color.white;
            PunchTapeManager.Instance.CloseFavoritesPanel();

            if (useYarn)
            {
                if (fadeMaterial != null)
                    fadeMaterial.SetFloat("_DirectionalDistortionFade", FadeMaterialStartValue);
                var memoryKey = string.Format(MemorySpritePath, memName);
                var memoryHandle = ResourceSystem.LoadAsync<Sprite>(memoryKey);
                yield return memoryHandle;
                Sprite memSprite = memoryHandle.Status == AsyncOperationStatus.Succeeded ? memoryHandle.Result : null;
                memoryFinishedSpriteRenderer.sprite = memSprite;
                memoryFinishedImageNoColor.sprite = memSprite;
                if (memSprite == null)
                {
                    Debug.LogError("Memory not found: " + memoryKey);
                }
            }
            else
            {
                EnsurePunchTapeSlotReference();
                if (punchTapeSlot == null || punchTapeSlot.punchTape == null)
                {
                    Debug.LogError("[MemoryProcess] PlayMemory：未配置插槽或打孔带数据缺失。", this);
                    yield break;
                }
            }

            playBackground.gameObject.SetActive(true);
            playBackground.alpha = 0;
            AudioManager.Instance.PlaySfx("event:/ActionFB/mem_play");
            yield return playBackground.DOFade(1f, DefaultFadeDuration).WaitForCompletion();

            if (!useYarn)
            {
                DialogController.Instance.StartDialogNode(
                    LocalizationKit.GetL10NParamKey(punchTapeSlot.punchTape.ClueName));
            }
        }

        public IEnumerator SearchMemory(PunchTape punchTape, bool isSkipDialogue = false)
        {
            if (isPlayingFaderSound)
            {
                AudioManager.Instance.StopSfx("event:/ActionFB/mem_fader");
                isPlayingFaderSound = false;
            }

            frequencySlider.TargetValue = GetRandomNumber();
            claritySlider.TargetValue = GetRandomNumber();
            PunchTapeManager.Instance.CloseFavoritesPanel();

            if (punchTape == null)
            {
                Debug.Log("no punchTape");
                yield break;
            }

            _activePunchTape = punchTape;

            if (isProcessing)
            {
                Debug.LogWarning("Already processing a memory. Please wait until the process is finished.");
                yield break;
            }

            var searchMemoryKey = string.Format(MemorySpritePath, _activePunchTape.MemoryIndex);
            var searchMemoryHandle = ResourceSystem.LoadAsync<Sprite>(searchMemoryKey);
            yield return searchMemoryHandle;
            Sprite memorySprite = searchMemoryHandle.Status == AsyncOperationStatus.Succeeded
                ? searchMemoryHandle.Result
                : null;
            memoryFinishedSpriteRenderer.sprite = memorySprite;
            memoryFinishedImageNoColor.sprite = memorySprite;
            if (memorySprite == null)
            {
                Debug.LogError("Memory not found: " + searchMemoryKey);
            }

            memoryProcessVolume.weight = 1;
            AudioManager.Instance.PlaySfx("event:/Scriptal/mem_load");

            yield return new WaitForSeconds(SearchStartDelay);
            AudioManager.Instance.SetSfxParam("event:/Amb/amb_mem_tuning", "is_mem_tuning", 1);

            memoryFinishedSpriteRenderer.color = Color.white;
            memoryProcessVolume.weight = 0;
            isProcessing = true;
            frequencySlider.PrepareForSearch();
            claritySlider.PrepareForSearch();
            bool freqUnlocked = false;
            bool clarityUnlocked = false;
            frequencySlider.UnlockSlider(() => freqUnlocked = true);
            claritySlider.UnlockSlider(() => clarityUnlocked = true);
            yield return new WaitUntil(() => freqUnlocked && clarityUnlocked);
            frequencySlider.SetInteractable(true);
            claritySlider.SetInteractable(true);
        }


        public bool IsProcessing()
        {
            return isProcessing;
        }
    }
}