import { director, SceneAsset, sys } from 'cc'
import { Logger } from '../../engine/utils/Logger'
import LoadingScenePrefab from '../../engine/uicomponent/LoadingScenePrefab'
import CommonTips from '../../engine/uicomponent/CommonTips'
import EventManager from '../../engine/utils/EventManager'
import CommonEvent from '../../engine/config/CommonEvent'

export default class SceneManager {
  public static instance: SceneManager = new SceneManager()

  private loadingSceneName: string

  public currentSceneName: string

  public initFullScreenPrefab(isShow: boolean = false) {
    if (sys.isBrowser && !sys.isMobile) {
      if (isShow) {
        // FullscreenPrefab.show();
      } else {
        // FullscreenPrefab.close();
      }
    }
  }

  public async sceneSwitch(name: string, showProgress: boolean = false) {
    if (this.loadingSceneName == name) return
    Logger.log(this, 'sceneSwitch==', name)
    if (sys.isBrowser) {
      // showProgress = true;
    }
    this.initFullScreenPrefab(false)
    this.loadingSceneName = name
    if (showProgress) {
      await LoadingScenePrefab.show()
      director.preloadScene(
        name,
        (completedCount: number, totalCount: number, item: any) => {
          LoadingScenePrefab.updateLoading(completedCount, totalCount)
        },
        (error: Error, asset: SceneAsset) => {
          if (error) {
            Logger.warn(this, 'preloadScene=error', error.message)
            CommonTips.showMsg('加载场景失败')
          } else {
            //director.getScene().destroy();//director.getScene().cleanup();
            director.loadScene(name, this.loadSceneOK.bind(this))
          }
        }
      )
    } else {
      //director.getScene().destroy();//director.getScene().cleanup();
      director.loadScene(name, this.loadSceneOK.bind(this))
    }
  }

  private loadSceneOK() {
    LoadingScenePrefab.close()
    this.initFullScreenPrefab(true)
    this.currentSceneName = this.loadingSceneName
    this.loadingSceneName = ''
    Logger.log(this, 'scene load ok=', this.currentSceneName)
    EventManager.instance.dispatchEvent(CommonEvent.Event_Scene_Switch)
  }

  public preloadScene(
    sceneName: string,
    onProgressCallback: any = null,
    onLoadedCallback: any = null
  ) {
    director.preloadScene(sceneName, onProgressCallback, onLoadedCallback)
  }
}