using System.Collections;
using DG.Tweening;
using UnityEngine;
using AibisDream.FixSystem;
using AibisDream.MiniGame.Language;
using System.Collections.Generic;

namespace AibisDream
{
    /// <summary>
    /// 表达系统顶层管理器（原 ExpressionManager，现改为语言粒子系统）
    /// </summary>
    public class ExpressionManager : MonoBehaviour
    {
        [Header("系统组件")]
        [SerializeField] private LanguageParticleManager particleManager;
        [SerializeField] private GameObject expressionView;
        [SerializeField] private LogReleasePresentationController logReleasePresentation;

        [Header("默认配置")]
        [SerializeField] private List<string> defaultAnxietyPhrases = new List<string>
        {
            "哈哈",
            "嘿嘿",
            "呵呵"
        };
        [SerializeField] private string defaultTargetSentence = "这是一个测试示例";

        [Header("Sprite 淡入淡出")]
        [SerializeField] private SpriteRenderer screenOverlayRenderer;
        [SerializeField] private SpriteRenderer volcanoOverlayRenderer;
        [SerializeField, Range(0f, 1f)] private float spriteOverlayFadeInAlpha = 1f;
        [Tooltip("屏幕强制保持该 RGB（只动 alpha）")]
        [SerializeField] private Color lockedScreenRgb = Color.black;

        [Header("Glitch 噪波效果")]
        [Tooltip("噪波故障效果控制器，可选；置于 Expression View 子物体上")]
        [SerializeField] private SpriteNoiseGlitchController glitchController;

        public LogReleasePresentationController LogReleasePresentation => logReleasePresentation;

        void Start()
        {
            // 注册到系统字典
            FixSystemCenter.SystemDic.Register(this);
            
            // 查找并初始化表达视图
            if (expressionView == null)
            {
                expressionView = transform.Find("Expression View")?.gameObject;
            }
            
            if (expressionView != null)
            {
                expressionView.SetActive(false);
            }

            // 查找粒子管理器
            if (particleManager == null)
            {
                particleManager = GetComponentInChildren<LanguageParticleManager>(true);
            }

            if (glitchController == null)
            {
                glitchController = GetComponentInChildren<SpriteNoiseGlitchController>(true);
            }

            if (logReleasePresentation == null)
            {
                logReleasePresentation = GetComponent<LogReleasePresentationController>();
            }

            if (particleManager != null)
            {
                particleManager.SetPresentationController(logReleasePresentation);
            }
        }

        /// <summary>
        /// 打开表达视图（只显示美术背景，不启动粒子系统）
        /// 先设置所有初始状态，再打开视图
        /// </summary>
        public void OpenView()
        {
            // 先设置所有初始状态再打开
            if (particleManager != null)
            {
                particleManager.SetInitialStatesBeforeOpen();
            }

            if (expressionView != null)
            {
                expressionView.SetActive(true);
            }
        }

        /// <summary>
        /// 启动粒子系统（在打开视图后调用，通常通过 Yarn 对话控制）
        /// </summary>
        /// <param name="anxietyPhrases">干扰短句列表（笑话等，非目标粒子从中随机取字符）</param>
        /// <param name="targetSentence">目标句子</param>
        /// <param name="completionNodeName">完成时触发的对话节点名称（可选）</param>
        /// <param name="nonTargetParticleTotal">非目标候选粒子总数；&lt;0 时使用 Inspector 默认候选池大小</param>
        public void StartSystem(List<string> anxietyPhrases, string targetSentence, string completionNodeName = null, int nonTargetParticleTotal = -1)
        {
            if (particleManager != null)
            {
                particleManager.SetPresentationController(logReleasePresentation);
                // 使用传入的配置，如果没有则使用默认配置
                var phrases = anxietyPhrases ?? defaultAnxietyPhrases;
                var sentence = targetSentence ?? defaultTargetSentence;
                
                particleManager.InitializeSystem(phrases, sentence, completionNodeName, nonTargetParticleTotal);
            }
        }

        /// <summary>
        /// 启动粒子系统（字符串数组版本，方便 Yarn 调用）
        /// </summary>
        public void StartSystem(string[] anxietyPhrases, string targetSentence, string completionNodeName = null, int nonTargetParticleTotal = -1)
        {
            List<string> phrasesList = anxietyPhrases != null ? new List<string>(anxietyPhrases) : null;
            StartSystem(phrasesList, targetSentence, completionNodeName, nonTargetParticleTotal);
        }

        /// <summary>
        /// 若火山释放 log 界面已淡出，则先淡入再返回（start_expression 时调用）
        /// </summary>
        /// <param name="duration">淡入时长（秒）</param>
        public IEnumerator EnsureReleaseLogFadedIn(float duration = 1f)
        {
            if (particleManager == null) yield break;
            yield return particleManager.FadeInReleaseLogIfNeeded(duration);
        }

        /// <summary>
        /// 再次 <c>start_expression</c> 前淡出上一轮粒子与连线（若尚未初始化则立即结束）。
        /// duration≤0 时使用 LanguageParticleManager 上的默认时长。
        /// </summary>
        public IEnumerator FadeOutParticlesBeforeNewRound(float duration = 0f)
        {
            if (particleManager == null) yield break;
            yield return StartCoroutine(particleManager.FadeOutBeforeNewExpressionRound(duration));
        }

        public IEnumerator PreparePresentationForNextRound()
        {
            if (logReleasePresentation == null) yield break;
            yield return logReleasePresentation.PrepareForNextRound();
        }

        /// <summary>
        /// 等待表达流程就绪（开场表现 + 火山表达panel 播完）
        /// </summary>
        public IEnumerator WaitUntilExpressionFlowReady()
        {
            if (particleManager == null) yield break;
            yield return particleManager.WaitUntilExpressionFlowReady();
        }

        /// <summary>
        /// 从聚焦保持态触发稳定化（概率递增 → 文字锁定 → 排列）
        /// </summary>
        public void ResolveFocusSequence()
        {
            if (particleManager != null)
            {
                particleManager.ResolveFocusSequence();
            }
        }

        /// <summary>
        /// 触发聚焦稳定化并等待全流程完成
        /// </summary>
        public IEnumerator ResolveFocusAndWait()
        {
            if (particleManager == null) yield break;
            particleManager.ResolveFocusSequence();
            yield return particleManager.WaitUntilFocusFinished();
        }

        public IEnumerator PlayFocusInterferenceAndWait(
            string direction,
            float duration,
            string characterPool,
            string colorHex,
            float shakeAmplitude,
            float shakeSpeed,
            float changeInterval,
            float transitionRatio)
        {
            if (particleManager == null) yield break;
            yield return particleManager.PlayFocusInterferenceAndWait(
                direction,
                duration,
                characterPool,
                colorHex,
                shakeAmplitude,
                shakeSpeed,
                changeInterval,
                transitionRatio);
        }

        /// <summary>
        /// 开发预览：跳过玩法，直接进入 FocusHolding（目标字已就位）。
        /// </summary>
        public IEnumerator SkipToFocusHoldingPreview()
        {
            if (particleManager == null)
                yield break;

            if (!particleManager.IsInitialized)
                yield break;

            yield return particleManager.WaitUntilExpressionFlowReady();
            particleManager.DebugCompleteTargets();

            float timeout = 8f;
            float elapsed = 0f;
            while (elapsed < timeout &&
                   particleManager.CurrentCompletionPhase != CompletionPhase.FocusHolding &&
                   particleManager.CurrentCompletionPhase != CompletionPhase.Focusing)
            {
                elapsed += Time.deltaTime;
                yield return null;
            }

            while (particleManager.CurrentCompletionPhase == CompletionPhase.Focusing)
                yield return null;
        }

        /// <summary>
        /// 关闭表达系统
        /// </summary>
        public void CloseView()
        {
            if (logReleasePresentation != null)
            {
                logReleasePresentation.ForceCleanupImmediate(true);
            }

            if (expressionView != null)
            {
                expressionView.SetActive(false);
            }

            if (particleManager != null)
            {
                particleManager.StopSystem();
            }
        }

        /// <summary>
        /// 重置系统（保持当前配置）
        /// </summary>
        public void ResetSystem(bool playEntranceEffect = true)
        {
            if (logReleasePresentation != null)
            {
                logReleasePresentation.ForceCleanupImmediate(true);
            }

            if (particleManager != null)
            {
                particleManager.ResetGame(playEntranceEffect);
            }
        }

        /// <summary>
        /// 淡入 Sprite 图片（屏幕、火山同步）
        /// </summary>
        /// <param name="duration">淡入时长（秒）</param>
        public IEnumerator FadeInSpriteOverlay(float duration = 1f)
        {
            List<SpriteRenderer> renderers = CollectSpriteOverlayRenderers();
            if (renderers.Count == 0) yield break;

            float fadeDuration = Mathf.Max(0.01f, duration);
            float targetAlpha = Mathf.Clamp01(spriteOverlayFadeInAlpha);
            Sequence sequence = DOTween.Sequence().SetTarget(this);
            for (int i = 0; i < renderers.Count; i++)
            {
                SpriteRenderer sr = renderers[i];
                DOTween.Kill(sr);
                PrepareOverlayRendererForFade(sr, 0f);
                sr.enabled = true;
                sr.gameObject.SetActive(true);
                sequence.Join(sr.DOFade(targetAlpha, fadeDuration).SetEase(Ease.OutQuad));
            }

            yield return sequence.WaitForCompletion();

            for (int i = 0; i < renderers.Count; i++)
                LockScreenOverlayRgb(renderers[i], renderers[i] != null ? renderers[i].color.a : 0f);
        }

        /// <summary>
        /// 淡出 Sprite 图片（屏幕、火山同步）
        /// </summary>
        /// <param name="duration">淡出时长（秒）</param>
        public IEnumerator FadeOutSpriteOverlay(float duration = 1f)
        {
            List<SpriteRenderer> renderers = CollectSpriteOverlayRenderers();
            if (renderers.Count == 0) yield break;

            float fadeDuration = Mathf.Max(0.01f, duration);
            Sequence sequence = DOTween.Sequence().SetTarget(this);
            for (int i = 0; i < renderers.Count; i++)
            {
                SpriteRenderer sr = renderers[i];
                DOTween.Kill(sr);
                LockScreenOverlayRgb(sr, sr.color.a);
                sr.enabled = true;
                sr.gameObject.SetActive(true);
                sequence.Join(sr.DOFade(0f, fadeDuration).SetEase(Ease.InQuad));
            }

            yield return sequence.WaitForCompletion();

            for (int i = 0; i < renderers.Count; i++)
            {
                SpriteRenderer sr = renderers[i];
                if (sr == null) continue;
                LockScreenOverlayRgb(sr, 0f);
                sr.enabled = false;
                sr.gameObject.SetActive(false);
            }
        }

        private List<SpriteRenderer> CollectSpriteOverlayRenderers()
        {
            var result = new List<SpriteRenderer>();
            if (screenOverlayRenderer != null)
                result.Add(screenOverlayRenderer);
            if (volcanoOverlayRenderer != null && volcanoOverlayRenderer != screenOverlayRenderer)
                result.Add(volcanoOverlayRenderer);
            return result;
        }

        private bool IsScreenOverlayRenderer(SpriteRenderer sr)
        {
            return sr != null && sr == screenOverlayRenderer;
        }

        private void PrepareOverlayRendererForFade(SpriteRenderer sr, float alpha)
        {
            if (sr == null) return;
            if (IsScreenOverlayRenderer(sr))
            {
                SuppressScreenMaterialGlow(sr);
                LockScreenOverlayRgb(sr, alpha);
                return;
            }

            Color color = sr.color;
            color.a = alpha;
            sr.color = color;
        }

        private void LockScreenOverlayRgb(SpriteRenderer sr, float alpha)
        {
            if (!IsScreenOverlayRenderer(sr)) return;
            Color locked = lockedScreenRgb;
            locked.a = Mathf.Clamp01(alpha);
            sr.color = locked;
        }

        private static void SuppressScreenMaterialGlow(SpriteRenderer sr)
        {
            if (sr == null) return;
            Material mat = sr.material;
            if (mat == null) return;
            if (mat.HasProperty("_Glow"))
                mat.SetFloat("_Glow", 0f);
            if (mat.HasProperty("_GlowGlobal"))
                mat.SetFloat("_GlowGlobal", 1f);
        }

        /// <summary>
        /// Glitch 噪波过渡：从当前强度平滑过渡到 to，不瞬移（类似 DOTween）。
        /// </summary>
        public void TransitionGlitch(float to, float duration = 0f)
        {
            if (glitchController == null) return;
            glitchController.TransitionTo(to, duration);
        }

        /// <summary>
        /// Glitch 噪波过渡并等待完成：从当前强度平滑过渡到 to。
        /// </summary>
        public IEnumerator TransitionGlitchAndWait(float to, float duration = 0f)
        {
            if (glitchController == null) yield break;
            yield return glitchController.StartCoroutine(glitchController.TransitionToAndWait(to, duration));
        }

        /// <summary>
        /// Glitch 噪波过渡并等待完成：从当前强度平滑过渡到 to（from 忽略，保持丝滑连续）。
        /// </summary>
        public IEnumerator TransitionGlitchAndWait(float from, float to, float duration)
        {
            if (glitchController == null) yield break;
            yield return glitchController.StartCoroutine(glitchController.TransitionToAndWait(to, duration));
        }

        public IEnumerator BeginExpressionMemory(
            string memoryKey,
            float fadeDuration = -1f,
            float pushSpeed = -1f,
            float horizontalSpeed = -1f,
            bool preserveGlitch = false,
            float targetOpacity = 1f)
        {
            if (logReleasePresentation == null)
            {
                Debug.LogError("[ExpressionManager] LogReleasePresentationController 未配置；记忆命令安全结束。");
                yield break;
            }
            yield return logReleasePresentation.BeginMemory(
                memoryKey,
                fadeDuration,
                pushSpeed,
                horizontalSpeed,
                preserveGlitch,
                targetOpacity);
        }

        public IEnumerator BeginExpressionLie(string keyword, string preset)
        {
            if (logReleasePresentation == null)
            {
                Debug.LogError("[ExpressionManager] LogReleasePresentationController 未配置；谎话命令安全结束。");
                yield break;
            }
            yield return logReleasePresentation.BeginLie(keyword, preset);
        }

        public IEnumerator BreakExpressionLie()
        {
            if (logReleasePresentation == null) yield break;
            yield return logReleasePresentation.BreakLie();
        }

        public IEnumerator RevealExpressionTruth()
        {
            if (logReleasePresentation == null) yield break;
            yield return logReleasePresentation.RevealTruth();
        }

        public IEnumerator EndExpressionMemory()
        {
            if (logReleasePresentation == null) yield break;
            yield return logReleasePresentation.EndMemory();
        }

        public void ImpactExpressionTruth()
        {
            logReleasePresentation?.TruthImpact();
        }

        private void OnDisable()
        {
            if (logReleasePresentation != null)
                logReleasePresentation.ForceCleanupImmediate(true);
        }

    }
}