using UnityEngine;
using Yarn.Unity;
using System;
using System.Collections;
using AibisDream;
using System.Linq;
using UnityEngine.UI;
using DG.Tweening;

public class BookManager : MonoBehaviour
{
    public Book book; // Reference to the book script
    private AutoFlip flipmanager;

    public Button CloseBookButton;

    public Button OepnBookButton;

    private RectTransform bookPos;

    public event Action OnBookClosed;

    public event Action OnBookOpen;

    void Start()
    {
        CloseBookButton.onClick.RemoveAllListeners(); // 确保不会重复绑定
        CloseBookButton.onClick.AddListener(() =>
        {
            // 仅关闭书本，不执行额外操作
            CloseBook();
        });
        
        OepnBookButton.onClick.RemoveAllListeners(); // 确保不会重复绑定
        OepnBookButton.onClick.AddListener(() =>
        {
            // 打开书本
            ButtonOpenBook();
        });
        
        DialogController.Instance.RegisterOptionCommand("listen_closeBook", CombineCloseBook);
        flipmanager = book.gameObject.GetComponent<AutoFlip>();
        bookPos = book.gameObject.GetComponent<RectTransform>();
        // Initially, the book is closed
        CloseBook();
    }
    // Open the book and flip to a specific page

    public void CombineCloseBook(YarnOption[] options)
    {
        var optionDic = options.ToDictionary(item => item.Text, item => item);
        Debug.Log("Option dictionary keys: " + string.Join(", ", optionDic.Keys));

        if (optionDic.ContainsKey("CloseBook"))
        {
            // 监听书关闭事件
            OnBookClosed -= TriggerCloseBookOption; // 避免重复监听
            OnBookClosed += TriggerCloseBookOption;

            // 内部方法：当书关闭时触发该选项的逻辑
            void TriggerCloseBookOption()
            {
                optionDic["CloseBook"].SelectOption();
            }
        }
    }

    public void ButtonOpenBook()
    {
        StartCoroutine(OpenBook());
    }

    [YarnCommand("OpenBook")]
    public IEnumerator OpenBook()
    {
        if(book.gameObject.activeInHierarchy)
        {
            yield break;
        }
        AudioManager.RandomPlayInteraction("book");
        OnBookOpen?.Invoke();
        // 如果书还没有激活，先激活它
        if (!book.gameObject.activeInHierarchy)
        {
            book.gameObject.SetActive(true);
        }

        // 使用 DoTween 创建一个动画序列
        Sequence sequence = DOTween.Sequence();

        // 设置初始位置为屏幕外或者其他你想要的位置（根据需求自行设置）
        bookPos.anchoredPosition =
            new Vector2(bookPos.anchoredPosition.x, -(Screen.height + bookPos.sizeDelta.y) / 2);

        // 移动到目标位置
        sequence.Append(bookPos.DOAnchorPos(Vector2.zero, 0.5f).SetEase(Ease.OutQuad));

        // 等待序列完成
        yield return sequence.WaitForCompletion();
    }

    [YarnCommand("Flip")]
    public IEnumerator FlipToPageYarnCommand(int parameters)
    {
        // Parse the target page from the parameters
        int targetPage = parameters;
        book.interactable=false;
        // Start the FlipToPageCoroutine and wait for it to finish
        yield return StartCoroutine(flipmanager.FlipToPageCoroutine(targetPage));
        book.interactable=true;
    }

    // Close the book
    public void CloseBook(Action onCloseCallback = null)
    {
        AudioManager.RandomPlayInteraction("book");
        StartCoroutine(CloseBookCoroutine(onCloseCallback));
    }

    private IEnumerator CloseBookCoroutine(Action onCloseCallback = null)
    {
        // 使用 DoTween 创建一个动画序列
        Sequence sequence = DOTween.Sequence();

        // 动画：将 book 移动回初始位置
        sequence.Append(bookPos
            .DOAnchorPos(
                new Vector2(bookPos.anchoredPosition.x, -(Screen.height + bookPos.sizeDelta.y) / 2), 0.5f)
            .SetEase(Ease.InQuad));

        // 等待动画完成
        yield return sequence.WaitForCompletion();

        // 动画完成后隐藏 book
        book.gameObject.SetActive(false);

        OnBookClosed?.Invoke();
    }
}