using DG.Tweening;
using System.Collections.Generic;
using UnityEngine;

namespace vnxbqy.UI
{
    public class FairySiegeStoryWin : Window
    {
        [SerializeField] ClickScreenOtherSpace clickScreenOtherSpace;
        [SerializeField] List<FairySiegeStoryInfoItem> fairySiegeStoryInfoItems = new List<FairySiegeStoryInfoItem>();
        TextGenerator generator;
        [SerializeField] ImageEx imgBk;
        [SerializeField] Transform tranTitle;
        [SerializeField] TextEx txtContinue;
        [SerializeField] RichText txtSkip;
        [SerializeField] TextEx txtTemp;
        [SerializeField] TextEx txtTitle;
        int currentLineIndex;
        FairySiegeActModel model { get { return ModelCenter.Instance.GetModel<FairySiegeActModel>(); } }

        #region Build-in

        protected override void AddListeners()
        {
            clickScreenOtherSpace.RemoveAllListeners();
            clickScreenOtherSpace.AddListener(OnClickScreenOtherSpace);
        }

        protected override void BindController()
        {
        }

        protected override void OnPreOpen()
        {
            model.fairySiegeStoryShowAllAction += OnFairySiegeStoryShowAll;
            model.fairySiegeStoryExitAction += OnFairySiegeStoryExit;
            DisPlay();
        }

        protected override void OnPreClose()
        {
            model.fairySiegeStoryShowAllAction -= OnFairySiegeStoryShowAll;
            model.fairySiegeStoryExitAction -= OnFairySiegeStoryExit;
        }

        protected override void OnAfterOpen()
        {
        }

        protected override void OnAfterClose()
        {
        }

        #endregion

        private void OnFairySiegeStoryExit()
        {
            Exit();
        }

        private void OnFairySiegeStoryShowAll()
        {
            ShowAll();
        }

        private void DisPlay()
        {
            InitInfo();
            Reset();
            PlayBkSeq();
            PlayRowSeq();
        }

        private void InitInfo()
        {
            var str = Language.Get("FairySiegeStoryInfo");
            txtTemp.text = str;
            txtTemp.SetActive(false);

            generator = new TextGenerator();
            var settings = txtTemp.GetGenerationSettings(txtTemp.rectTransform.rect.size);
            generator.Populate(str, settings);

            if (fairySiegeStoryInfoItems.Count < generator.lines.Count)
            {
                DebugEx.LogError("行数不足，展示不全");
                CloseClick();
                return;
            }

            for (var i = 0; i < fairySiegeStoryInfoItems.Count; i++)
                if (i < generator.lines.Count)
                {
                    fairySiegeStoryInfoItems[i].SetActive(true);
                    var line = generator.lines[i];
                    var charCount = i < generator.lines.Count - 1
                        ? generator.lines[i + 1].startCharIdx - line.startCharIdx
                        : str.Length - line.startCharIdx;
                    var subStr = str.Substring(line.startCharIdx, charCount);
                    fairySiegeStoryInfoItems[i].txtInfo.text = subStr;
                    fairySiegeStoryInfoItems[i].canvasGroup.alpha = 0;
                }
                else
                {
                    fairySiegeStoryInfoItems[i].SetActive(false);
                }
        }

        private void Reset()
        {
            ResetRowSeq();
            ResetBkSeq();
            txtContinue.SetActive(true);
            currentLineIndex = 0; // 重置行索引
            txtTitle.text = Language.Get("FairySiegeStoryTitle");
            model.isFairySiegeStoryPlaying = true;
        }

        #region 播放行动画

        private void PlayRowSeq()
        {
            if (currentLineIndex >= generator.lines.Count) return;

            StopRowSeq();

            var currentItem = fairySiegeStoryInfoItems[currentLineIndex];
            currentItem.SetActive(true);
            currentItem.canvasGroup.alpha = 0; // 重置为新动画起点

            txtContinue.SetActive(currentLineIndex + 1 == generator.lines.Count);
            if (currentLineIndex + 1 == generator.lines.Count)
            {
                model.isFairySiegeStoryPlaying = false;
            }

            seqRow.Append(currentItem.canvasGroup.DOFade(1, 1f)).SetEase(Ease.OutQuad).OnComplete(() =>
            {
                currentLineIndex++;
                PlayRowSeq();
            });
        }

        float lastClickTime;

        private void OnClickScreenOtherSpace()
        {
            if (Time.time - lastClickTime < 0.2f)
                return;
            lastClickTime = Time.time;

            StopRowSeq();

            // 立即完成当前行动画
            if (currentLineIndex < generator.lines.Count)
            {
                var currentItem = fairySiegeStoryInfoItems[currentLineIndex];
                currentItem.canvasGroup.alpha = 1;
            }

            // 计算有效下一行
            var nextLine = currentLineIndex + 1;
            if (nextLine < generator.lines.Count)
            {
                currentLineIndex = nextLine;
                PlayRowSeq();
            }
            else
            {
                Exit();
            }
        }

        private void Exit()
        {
            model.isFairySiegeStoryPlaying = false;
            currentLineIndex = generator.lines.Count;
            CloseClick();
        }

        private void ShowAll()
        {
            Reset();
            for (var i = 0; i < fairySiegeStoryInfoItems.Count; i++)
            {
                if (i < generator.lines.Count)
                {
                    fairySiegeStoryInfoItems[i].SetActive(true);
                    fairySiegeStoryInfoItems[i].canvasGroup.alpha = 1;
                }
                else
                {
                    fairySiegeStoryInfoItems[i].SetActive(false);
                }
            }

            currentLineIndex = generator.lines.Count - 1;
            txtContinue.SetActive(true);
            model.isFairySiegeStoryPlaying = false;
        }

        Sequence seqRow;

        private void StopRowSeq(bool complete = false)
        {
            seqRow?.Kill(complete);
            seqRow = DOTween.Sequence();
        }

        private void ResetRowSeq()
        {
            StopRowSeq();
            for (var i = 0; i < fairySiegeStoryInfoItems.Count; i++)
            {
                fairySiegeStoryInfoItems[i].SetActive(false);
                fairySiegeStoryInfoItems[i].canvasGroup.alpha = 0;
            }
        }

        #endregion

        #region 背景图移动

        Sequence seqBk;

        private void PlayBkSeq()
        {
            seqBk.Append(imgBk.rectTransform.DOAnchorPosY(240, 10f).SetEase(Ease.OutQuad));
        }

        private void StopBkSeq(bool complete = false)
        {
            seqBk?.Kill(complete);
            seqBk = DOTween.Sequence();
        }

        private void ResetBkSeq()
        {
            StopBkSeq();
            imgBk.rectTransform.anchoredPosition = new Vector3(0, 0, 0);
        }

        #endregion
    }
}