using System.Collections.Generic;
using System.Threading.Tasks;
using Kill.Base;
using UnityEngine;
namespace Kill.UI
{
    public class UIManager : MonoBehaviour
    {
        public enum PageName
        {
            nullPage = 0,
            MainPage = 1,
            TestPage = 2
        }
        [System.Serializable]
        public struct Page
        {
            public PageName pageName;
            public string bundleName;
        }
        public static UIManager Instance;
        public List<Page> pages;
        public GameObject nowPage;
        public PageName nowPageName = PageName.nullPage;
        void Awake()
        {
            Instance=this;
        }
        public void Init()
        {
            OpenPage(PageName.MainPage);
        }
        public async void OpenPage(PageName pageName)
        {
            switch (nowPageName)
            {
                case PageName.nullPage:
                    break;
                case PageName.MainPage:
                    Destroy(nowPage);
                    break;

            }
            int index = pages.FindIndex(x => x.pageName == pageName);
            switch (pageName)
            {
                case PageName.nullPage:
                    break;

                case PageName.MainPage:
                    GameObject prefab = await LoadRes.Instance.LoadAssetAsync<GameObject>(pages[index].bundleName, pageName.ToString()+".prefab");
                    nowPage = Instantiate(prefab, transform);
                    break;
            }
        }

    }
}