using System;
using System.Threading.Tasks;
using AibisDream.Kit;
using AibisDream.Utility;
using UnityEngine;
using Yarn.Unity;

namespace AibisDream
{
    public class LineViewNew : DialogueViewBase
    {
        [SerializeField] private LineAdvanceInput advanceInput;
        // [SerializeField] private BubbleCenter bubbleCenter;
        
        public override void RunLine(LocalizedLine dialogueLine, Action onDialogueLineFinished)
        {
            // 预处理Line和Event
            var lineSyncEvent = new LineSyncToken(dialogueLine, onDialogueLineFinished);
            // bubbleCenter.RunLine(lineSyncEvent);
            advanceInput.RunLine(lineSyncEvent);
        }
    }

    public class LineSyncToken
    {
        public LineInfo lineInfo;
        public LineSyncState state;

        public Action nextStep;
        public event Action SkipTextAnima;
        
        public LineSyncToken(LocalizedLine lineInfo, Action nextStep)
        {
            this.lineInfo = LineInfo.Generate(lineInfo);
            this.nextStep = nextStep;
            state = LineSyncState.PlayText;
        }

        public bool TrySkip()
        {
            if (state == LineSyncState.PlayText)
            {
                SkipTextAnima?.Invoke();
                SkipTextAnima = null;
                return true;
            }
            else
            {
                Debug.Log($"line{lineInfo.lineId} 状态为{state.ToString()}, 不能跳过文本");
                return false;
            }
        }

        public bool TryAdvance()
        {
            if (state == LineSyncState.WaitForAdvance)
            {
                nextStep?.Invoke();
                state = LineSyncState.Advanced;
                Dispose();
                return true;
            }
            else
            {
                Debug.Log($"line{lineInfo.lineId} 状态为{state.ToString()}, 不能向前推进");
                return false;
            }
        }

        private void Dispose()
        {
            nextStep = null;
            SkipTextAnima = null;
        }
        
        public void TextStart()
        {
            state = LineSyncState.PlayText;
        }
        
        public void TextShown()
        {
            state = LineSyncState.AdvanceDelay;
            // 延时
            
            state = LineSyncState.WaitForAdvance;
        }
    }

    public struct LineInfo
    {
        public string lineId;
        public string lineText;
        public CharacterVo character;
        public bool isAutoSkip;
        
        public static LineInfo Generate(LocalizedLine dialogueLine)
        {
            return new LineInfo
            {
                lineId = dialogueLine.TextID,
                lineText = dialogueLine.TextWithoutCharacterName.Text,
                character = dialogueLine.GetCharacterVo(),
                isAutoSkip = dialogueLine.IsAutoSkipLine()
            };
        }
    }

    public enum LineSyncState
    {
        PlayText,
        AdvanceDelay,
        WaitForAdvance,
        Advanced
    }
}