using Cysharp.Threading.Tasks;
using Cysharp.Threading.Tasks.Linq;
using Cysharp.Threading.Tasks.Triggers;
using PMaker.Await;
using PMaker.Extension;
using System.Linq;
using System.Threading;
using Script;
using UnityEngine;
using UnityEngine.UI;

public class UIBook : AwaitBehaviour
{
    [SerializeField] private GameObject[] _pages;

    [SerializeField] private IndexController _indexController;

    [SerializeField] private AsyncReactiveProperty<int> _index;

    [SerializeField] private Button _finishBtn;

    private void Reset()
    {
        //Debug.Log(this.transform.Find("学习完成Btn"));
        //this.transform.GetChild(2).gameObject.GetComponent<Button>();
        this.transform.GetComponentsInChildren<Button>().First(_ => _.name == "学习完成Btn");

        this._pages = this
            .transform
            .Find("root")
            .Children()
            //.Where(_ => _.GetComponent<BaseBehaviour>() == null)
            //.Where(_ => _.GetComponent<Selectable>() == null)
            .Select(_ => _.gameObject)
            .ToArray();
        this._indexController = this.GetComponentInChildren<IndexController>(true);
    }

    private void Start()
    {
        var token = this.GetCancellationTokenOnDestroy();
        _index = new AsyncReactiveProperty<int>(0);
        var max = _pages.Length - 1;
        _index
            .Where(_ => _ >= 0 && _ <= max)
            .Subscribe(_ =>
            {
                AudioManager.Instance.PlayMainSounds($"6-1/{StringConst.Model6_1Audio[_]}");

                if (_ == 0)
                {
                    _indexController.SetActive(0, false);
                }
                else
                {
                    _indexController.SetActive(0, true);
                }

                if (_ == max)
                {
                    _indexController.SetActive(1, false);
                    this._finishBtn.gameObject.SetActive(true);
                }
                else
                {
                    this._finishBtn.gameObject.SetActive(false);
                    _indexController.SetActive(1, true);
                }

                foreach (var item in _pages)
                {
                    item.SetActive(false);
                }

                _pages[_].SetActive(true);
            })
            .AddTo(token);
        _indexController.Bind(this._index, 0, max + 1, token);
    }

    public override async UniTask WaitAsync(CancellationToken cancellationToken = default)
    {
        this.gameObject.SetActive(true);
        await this.StartAsync();
        await this._finishBtn.OnClickAsync(cancellationToken);
        AudioManager.Instance.StopAllAudioSource();

        //var max = this._pages.Length - 1;
        //await this._index.FirstAsync(_ => _ >= max, cancellationToken);
        this.gameObject.SetActive(false);
    }
}