using System;
using System.Collections.Generic;
using System.Linq;
using AibisDream.Framework;
using AibisDream.Kit;
using AibisDream.Utility;
using DG.Tweening;
using Febucci.UI;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace AibisDream.FixSystem
{
    public class ScreenSystem : MonoBehaviour, IDialogView
    {
        #region 索引

        [SerializeField] private TMP_Text title;
        [SerializeField] private RectTransform textRoot;
        [SerializeField] private TMP_Text textForEstimation;
        private GameObject _textItemPrefab;
        private Queue<TypewriterByCharacter> _lineQueue;

        public BubbleSlotGroup BubbleSlotGroup { get; private set; }

        public TaskScreen TaskScreen { get; private set; }

        public int maxLineNum = 10;

        #endregion

        private void Awake()
        {
            InitComponentRefs();
            Register();
        }

        private void InitComponentRefs()
        {
            TaskScreen = GetComponentInChildren<TaskScreen>();
            _lineQueue = new Queue<TypewriterByCharacter>();
            _textItemPrefab = ResourceKit.LoadAssetSync<GameObject>(ConstRef.ScreenTextName);
            BubbleSlotGroup = GetComponentInChildren<BubbleSlotGroup>();
        }

        private void Register()
        {
            FixSystemCenter.SystemDic.Register(this);
            DialogCanvasManager.Instance.RegisterDialogView(DialogViewType.Screen, this);
            DialogCanvasManager.Instance.RegisterDialogView(DialogViewType.Task, TaskScreen);
        }

        private void OnDestroy()
        {
            FixSystemCenter.SystemDic.Unregister<ScreenSystem>();
            DialogCanvasManager.Instance.UnregisterDialogView(DialogViewType.Screen);
            DialogCanvasManager.Instance.UnregisterDialogView(DialogViewType.Task);
        }

        #region 基础功能

        private void ShowTitle(string targetTitle)
        {
            title.text = targetTitle;
        }
        
        public void ClearTextScreen()
        {
            while (_lineQueue.Count > 0)
            {
                var text = _lineQueue.Dequeue();
                Destroy(text.gameObject);
            }
            
            ShowTitle(string.Empty);
        }

        public void ShowTaskPanel()
        {
            TaskScreen.transform.DOLocalMoveX(-7.12f, 1f);
        }

        #endregion

        #region 对话框功能实现

        public void ShowLine(string dialogLine, CharacterVo character, Action nextStep, string lineId, bool isAutoSkip = false)
        {
            Debug.Log($"[ScreenSystem] ShowLine - 原始文本: '{dialogLine}'");
            
            if (string.IsNullOrWhiteSpace(dialogLine))
            {
                dialogLine = "        ";
                // Debug.Log("[ScreenSystem] ShowLine - 空文本被替换为空格");
            }
            
            ShowTitle(character.GetActorName());
            // 生成新文本组件
            var textItem = Instantiate(_textItemPrefab, textRoot);
            var textItemTypewriter = textItem.GetComponent<TypewriterByCharacter>();
            // 估算文本高度
            var newLineNum = EstimateLineNum(dialogLine);
            var oldLineNum = CalcTotalLineNum();
            if (newLineNum + oldLineNum > maxLineNum)
            {
                Destroy(_lineQueue.Dequeue().gameObject);
            }
            _lineQueue.Enqueue(textItemTypewriter);
            
            // 播放文本
            textItemTypewriter.ShowText(dialogLine);
            textItemTypewriter.onTextShowed.AddListener(() => AfterLineShown(textItemTypewriter, nextStep));
            
            // 强制更新布局
            LayoutRebuilder.ForceRebuildLayoutImmediate(textRoot);
            
            Debug.Log($"[ScreenSystem] ShowLine - 文本播放开始，nextStep是否为null: {nextStep == null}");
        }

        private void AfterLineShown(TypewriterByCharacter typewriter, Action nextStop)
        {
            Debug.Log("[ScreenSystem] AfterLineShown - 文本显示完成");
            Debug.Log($"[ScreenSystem] AfterLineShown - nextStop是否为null: {nextStop == null}");
            
            EnumEventSystem.Global.Send(DialogEventEnum.LineShown);
            ActionKit.Delay(0.1f, () =>
            {
                Debug.Log("[ScreenSystem] AfterLineShown - 延迟结束，调用回调");
                EnumEventSystem.Global.Send(DialogEventEnum.LineEnd);
                nextStop.Invoke();
                Debug.Log("[ScreenSystem] AfterLineShown - 回调调用完成");
            }).StartGlobal();
            typewriter.onTextShowed.RemoveAllListeners();
        }

        public void ShowOptions(DialogOption[] dialogueOptions)
        {
            Debug.Log("不能在显示屏显示对话");
        }

        public void HideDialog()
        {
            // HideDialog应该由其他函数控制
        }

        public bool TrySkipLine(bool isAutoSkip)
        {
            // 这里不能跳过对话
            return true;
        }

        public void NextStep()
        {
            // 这里不能手动跳到下一行
        }
        
        public void OnLocalizationChanged(string value)
        {
            // 屏幕不需要本地化
        }

        #endregion
        
        private int EstimateLineNum(string text)
        {
            textForEstimation.text = text;
            textForEstimation.ForceMeshUpdate();
            return textForEstimation.textInfo.lineCount;
        }

        private int CalcTotalLineNum()
        {
            return _lineQueue.Select(x => x.GetComponent<TMP_Text>().textInfo.lineCount).Sum();
        }
    }
}