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

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

        [SerializeField] private TMP_Text title;
        [SerializeField] private RectTransform textRoot;
        [SerializeField] private TMP_Text textForEstimation;
        [SerializeField] private int maxLineNum = 10;

        private GameObject _textItemPrefab;
        private Queue<TypewriterByCharacter> _lineQueue;

        public BubbleSlotGroup BubbleSlotGroup { get; private set; }

        public TaskScreen TaskScreen { get; private set; }

        #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);
            DialogUIManager.Instance.RegisterScreenView(DialogViewType.Screen, this);
            DialogUIManager.Instance.RegisterScreenView(DialogViewType.Task, TaskScreen);
            // StorageSystem.Instance.RegisterData(this);
        }

        private void OnDestroy()
        {
            FixSystemCenter.SystemDic.Unregister<ScreenSystem>();
            DialogUIManager.Instance.UnRegisterScreenView(DialogViewType.Screen);
            DialogUIManager.Instance.UnRegisterScreenView(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

        public void RunLine(LineSyncToken token)
        {
            // 空格延长一点避免报错
            if (string.IsNullOrWhiteSpace(token.lineInfo.lineText))
            {
                token.lineInfo.lineText = "        ";
            }

            // 显示标题
            ShowTitle(token.lineInfo.character.GetActorName());
            // 显示文本
            TypewriterCore textItemTypewriter = AddText(token);
            
            token.TextStart();
            // 强制更新布局
            LayoutRebuilder.ForceRebuildLayoutImmediate(textRoot);
        }

        private float GetTextSpeedValue()
        {
            var textSpeedStr = SettingLoader.Instance.TryRead("TextSpeed", out string textSpeed) ? textSpeed : "1";
            return float.TryParse(textSpeedStr, NumberStyles.Float, CultureInfo.InvariantCulture, out float result) ? result : 1f;
        }

        private void OnTextShown(LineSyncToken syncToken, TypewriterCore typewriter)
        {
            typewriter.onTextShowed.RemoveAllListeners();
            syncToken.TextShown();
        }

        private TypewriterByCharacter AddText(LineSyncToken token)
        {
            // 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(token.lineInfo.lineText);
            var oldLineNum = CalcTotalLineNum();
            if (newLineNum + oldLineNum > maxLineNum)
            {
                Destroy(_lineQueue.Dequeue().gameObject);
            }
            _lineQueue.Enqueue(textItemTypewriter);

            // 播放文本
            textItemTypewriter.SetTypewriterSpeed(GetTextSpeedValue());
            textItemTypewriter.onTextShowed.AddListener(() => OnTextShown(token, textItemTypewriter));
            textItemTypewriter.ShowText(token.lineInfo.lineText);

            return textItemTypewriter;
        }

        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();
        }
    }
}