using System.Collections;
using System.Collections.Generic;
using AibisDream.FixSystem;
using AibisDream;
using Yarn.Unity;

namespace AibisDream.MiniGame.Language
{
    /// <summary>
    /// 表达系统的 Yarn 命令接口（原语言系统）
    /// </summary>
    public static class LanguageYarnCommand
    {
        private static AibisDream.ExpressionManager ExpressionManager => FixSystemCenter.SystemDic.Get<AibisDream.ExpressionManager>();

        /// <summary>
        /// 启动表达粒子系统（在打开视图后调用），等待火山表达panel播完再返回
        /// <<start_expression "哈哈|嘿嘿|呵呵" "我很害怕" "ExpressionCompleted">>
        /// </summary>
        /// <param name="anxietyPhrasesStr">干扰短句（笑话等），用 | 分隔，用于非目标粒子字符池，如："哈哈|嘿嘿|呵呵"</param>
        /// <param name="targetSentence">目标句子</param>
        /// <param name="completionNode">完成时触发的对话节点（可选）</param>
        [YarnCommand("start_expression")]
        public static IEnumerator StartExpression(string anxietyPhrasesStr, string targetSentence, string completionNode = "")
        {
            if (ExpressionManager == null)
            {
                UnityEngine.Debug.LogError("ExpressionManager 未找到！请确保场景中有 ExpressionManager 组件。");
                yield break;
            }

            // 解析干扰短句（用 | 分隔）
            string[] phrases = null;
            if (!string.IsNullOrEmpty(anxietyPhrasesStr))
            {
                phrases = anxietyPhrasesStr.Split('|');
                for (int i = 0; i < phrases.Length; i++)
                {
                    phrases[i] = phrases[i].Trim();
                }
            }

            ExpressionManager.StartSystem(phrases, targetSentence, completionNode);
            yield return ExpressionManager.WaitUntilExpressionFlowReady();
        }

        /// <summary>
        /// 关闭表达系统
        /// <<close_expression>>
        /// </summary>
        [YarnCommand("close_expression")]
        public static void CloseExpression()
        {
            if (ExpressionManager == null)
            {
                UnityEngine.Debug.LogError("ExpressionManager 未找到！");
                return;
            }

            ExpressionManager.CloseView();
        }

        /// <summary>
        /// 重置表达系统（使用当前配置）
        /// <<reset_expression>>
        /// 或
        /// <<reset_expression false>> // 不播放入场动画
        /// </summary>
        /// <param name="playEntranceEffect">是否播放入场效果</param>
        [YarnCommand("reset_expression")]
        public static void ResetExpression(bool playEntranceEffect = true)
        {
            if (ExpressionManager == null)
            {
                UnityEngine.Debug.LogError("ExpressionManager 未找到！");
                return;
            }

            ExpressionManager.ResetSystem(playEntranceEffect);
        }

        /// <summary>
        /// 触发聚焦稳定化（从文字飘动保持态 → 概率递增 → 文字锁定 → 排列），等待全流程完成后返回
        /// <<resolve_expression_focus>>
        /// </summary>
        [YarnCommand("resolve_expression_focus")]
        public static IEnumerator ResolveExpressionFocus()
        {
            if (ExpressionManager == null)
            {
                UnityEngine.Debug.LogError("ExpressionManager 未找到！");
                yield break;
            }
            yield return ExpressionManager.StartCoroutine(ExpressionManager.ResolveFocusAndWait());
        }

        /// <summary>
        /// 重新启动表达系统（会重置并使用新配置，相当于 close + open + start）
        /// <<restart_expression "我好怕|怎么办|不行" "我能做到" "ExpressionCompleted">>
        /// </summary>
        /// <param name="anxietyPhrasesStr">干扰短句（笑话等），用 | 分隔</param>
        /// <param name="targetSentence">目标句子</param>
        /// <param name="completionNode">完成时触发的对话节点（可选）</param>
        [YarnCommand("restart_expression")]
        public static void RestartExpression(string anxietyPhrasesStr, string targetSentence, string completionNode = "")
        {
            if (ExpressionManager == null)
            {
                UnityEngine.Debug.LogError("ExpressionManager 未找到！");
                return;
            }

            // 停止当前系统
            ExpressionManager.CloseView();
            
            // 等一帧后重新启动
            UnityEngine.MonoBehaviour coroutineRunner = UnityEngine.Object.FindObjectOfType<UnityEngine.MonoBehaviour>();
            if (coroutineRunner != null)
            {
                coroutineRunner.StartCoroutine(RestartExpressionCoroutine(anxietyPhrasesStr, targetSentence, completionNode));
            }
            else
            {
                // 如果找不到 MonoBehaviour，直接启动
                ExpressionManager.OpenView();
                StartExpression(anxietyPhrasesStr, targetSentence, completionNode);
            }
        }

        private static IEnumerator RestartExpressionCoroutine(string anxietyPhrasesStr, string targetSentence, string completionNode)
        {
            yield return null; // 等一帧
            ExpressionManager.OpenView();
            StartExpression(anxietyPhrasesStr, targetSentence, completionNode);
        }

        /// <summary>
        /// 淡入 ExpressionManager 的 Sprite 图片
        /// <<expression_sprite_fade_in>>
        /// <<expression_sprite_fade_in 1.5>>
        /// </summary>
        /// <param name="duration">淡入时长（秒），默认 1</param>
        [YarnCommand("expression_sprite_fade_in")]
        public static IEnumerator ExpressionSpriteFadeIn(float duration = 1f)
        {
            if (ExpressionManager == null)
            {
                UnityEngine.Debug.LogError("ExpressionManager 未找到！");
                yield break;
            }
            yield return ExpressionManager.StartCoroutine(ExpressionManager.FadeInSpriteOverlay(duration));
        }

        /// <summary>
        /// 淡出 ExpressionManager 的 Sprite 图片
        /// <<expression_sprite_fade_out>>
        /// <<expression_sprite_fade_out 1.5>>
        /// </summary>
        /// <param name="duration">淡出时长（秒），默认 1</param>
        [YarnCommand("expression_sprite_fade_out")]
        public static IEnumerator ExpressionSpriteFadeOut(float duration = 1f)
        {
            if (ExpressionManager == null)
            {
                UnityEngine.Debug.LogError("ExpressionManager 未找到！");
                yield break;
            }
            yield return ExpressionManager.StartCoroutine(ExpressionManager.FadeOutSpriteOverlay(duration));
        }
    }
}