using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using JCUnityLib;

public class ViewMgr : ViewManager<ViewMgr>
{
    protected override void OnInited()
    {
        //设置视图组
        SetViewGroup<HomeFrameView>(1);
        //场景监听
        SceneManager.sceneLoaded += (scene, mode) => {
            if (scene.name == "Home") {
                ResumeViews(dontDestroyViews);
            }
        };
        SceneManager.sceneUnloaded += (scene) => {
            if (scene.name == "Home") {
                DestroyAllViewsExcludeDontDestroy();
                HideViews(dontDestroyViews);
            }
        };
    }

    //以下名称的预制体通过SceneResourceManager获取
    HashSet<string> scenePrefabs = new HashSet<string>(new string[] {
        //Home
        "TopBarView", "HomeView", "GameStartView", "ChallengeOptionView", 
        "PKGameOptionView", "PKMatchView", "RoleSelectView"
    });
    protected override GameObject LoadViewPrefab(string viewName)
    {
        if (scenePrefabs.Contains(viewName)) return SceneResourceManager.Instance.GetPrefab(viewName);
        return base.LoadViewPrefab("Home/" + viewName);
    }

    //以下名称的界面不会随场景销毁而销毁
    HashSet<string> dontDestroyViews = new HashSet<string>(new string[] {
        //Home
        "GameStartView", "ChallengeOptionView", "RoleSelectView", "PKGameOptionView", "PKMatchView"
    });
    protected override void ShowView(ViewBase viewBase, object[] args)
    {
        base.ShowView(viewBase, args);
        string viewName = viewBase.GetType().Name;
        //主要是为了删除名称中的(Clone)
        viewBase.gameObject.name = viewName;
        //某些界面设置为不销毁
        if (dontDestroyViews.Contains(viewName)) viewBase.dontDestroy = true;
        //旧版ui适配新ui框架
        RectTransform rectTransform = (RectTransform) viewBase.transform;
        rectTransform.anchorMin = Vector2.zero;
        rectTransform.anchorMax = Vector2.one;
        rectTransform.pivot = Vector2.one / 2;
        rectTransform.localScale = Vector3.one;
        var canvasScaler = rectTransform.GetComponent<UnityEngine.UI.CanvasScaler>();
        if (canvasScaler) Destroy(canvasScaler);
        //特殊处理
        if (viewName == "HomeView") rectTransform.SetSiblingIndex(0);
    }

    public void ResumeViews(IEnumerable<string> viewNames, params object[] args) 
    {
        foreach (var viewName in viewNames)
        {
            ViewBase viewBase;
            if (viewDict.TryGetValue(viewName, out viewBase)) {
                ShowView(viewBase, args);
            }
        }
    }

    public void HideViews(IEnumerable<string> viewNames, params object[] args) 
    {
        foreach (var viewName in viewNames)
        {
            ViewBase viewBase;
            if (viewDict.TryGetValue(viewName, out viewBase)) {
                HideView(viewBase, false, args);
            }
        }
    }
}