using Cysharp.Threading.Tasks;

using MessagePipe;

using PMaker.Await;
using PMaker.MessagePipe;

using System.Threading;
using System.Transactions;

using UniRx;

using UnityEngine;
using UnityEngine.UIElements;

namespace PMaker.UI
{
    public abstract partial class Page : BaseBehaviour, IPage
    {
        protected CancellationTokenSource _tokenSource;

        protected virtual void OnEnable()
        {
            _tokenSource = new CancellationTokenSource();
        }

        protected virtual void OnDisable()
        {
            _tokenSource?.Cancel();
        }

        public virtual void Hide()
        {
            this.gameObject.SetActive(false);
        }

        public virtual void Show()
        {
            this.gameObject.SetActive(true);
        }
    }

    // message
    public abstract partial class Page
    {
        protected virtual void Awake()
        {
            MessageKit.GetAsyncSubscriber<string, string>()
                      .Subscribe(this.GetType().Name, async (_, token) => {
                          await this.WaitUI(_, token);
                      })
                      .AddTo(this);

            MessageKit.GetSubscriber<string, (string name, bool value)>()
                      .Subscribe(this.GetType().Name, (_) => {
                          this.GetUI<Transform>(_.name).gameObject.SetActive(_.value);
                      })
                      .AddTo(this);

            MessageKit.GetFuncSubscriber<string, Page>()
                      .Subscribe(this.GetType().Name, _ => {
                          _.value = this;
                      })
                      .AddTo(this);
        }
    }
}