import { nextFrame } from "../animation/nextFrame";
import { OnAnimationFrame } from "../animation/OnAnimationFrame";
import { sleep } from "../animation/sleep";
import { DateMath } from "../date/DateMath";
import { ActivityAnalyser } from "../dom/ActivityAnalyser";
import { ClassFlag } from "../dom/ClassFlag";
import { Fullscreen } from "../dom/Fullscreen";
import { Insight } from "../dom/Insight";
import { LandscapeScale } from "../dom/LandscapeScale";
import { HashScroll } from "../dom/page-features/features/HashScroll";
import { PageHandler, PageHandlerMode } from "../dom/PageHandler";
import { UserAgentDeviceTypes } from "../dom/UserAgentDeviceType";
import { EventSlot } from "../events/EventSlot";
import { TemplatesManager, TemplatesManagerMode } from "../templates/TemplatesManager";
import { waitAround } from "../tools/sleep";
import { AppPathConverter } from "./AppPathConverter";

export class AppInitializerData
{
  localAdress:string;
  webAdress:string;
  templatesList:string[];
  addTemplateStyles:boolean = false;
  pageRoot:string;
  pagesPath?:string;
  disableForceHTTPS?:boolean;
  htmlMode?:boolean;
  allowWWWSubdomain?:boolean;
  
}

export class ElectronAppInitializerData
{
  appLocation:string;
  templatesList:string[];
  pageRoot:string;
  disableForceHTTPS?:boolean;
  htmlMode?:boolean;
  allowWWWSubdomain:boolean;
}

export class App
{
  readonly activityAnalyser = new ActivityAnalyser();
  readonly onAnimationFrame = new OnAnimationFrame();
  readonly templatesManager = new TemplatesManager();
  readonly insight = new Insight();
  readonly landscapeScale = new LandscapeScale();
  readonly pathConverter = new AppPathConverter( this );

  private _pageHandler:PageHandler;
  private _initializerData:AppInitializerData;
  private _electronInitializerData:ElectronAppInitializerData;

  protected _loaded = false;
  get loaded()
  {
    return this._loaded;
  }

  protected _loadedTime:Date = null;

  get timeElapsedSinceLoaded()
  {
    return DateMath.getDifferenceMs( new Date(), this._loadedTime ) / 1000;
  } 

  setLoaded()
  {
    this._loaded = true;
    this._loadedTime = new Date();
  }

  get initializerData(){ return this._initializerData; }

  get pageHandler(){ return this._pageHandler; }

  
  get webAdress()
  {
    return this._initializerData.webAdress;
  }

  get isHTMLMode()
  {
    return this._initializerData.htmlMode === true;
  }

  grabHash()
  {
    let hash = window.location.hash;
    return hash;
  }

  get isLocal()
  {
    return false;
  }   

  async initializeApp( data:AppInitializerData|ElectronAppInitializerData ):Promise<void>
  {    
    if ( document.readyState === "loading" )
    {
      document.addEventListener( 
        "DOMContentLoaded", 
        ()=>
        { 
          this.setLoaded();
        } 
      ); 
    }
    else
    {
      this.setLoaded();
    }

    setTimeout( ()=>{ this.setLoaded(); App.appReadyFlag.set( document.body ) }, 3000 )

    if ( ! data.allowWWWSubdomain  )
    { 
      let url = window.location + "";

      if ( url.startsWith( "https://www." ) )
      {
        let realURL = url.replace( /^https:\/\/www\./, "https://" );

        window.location.assign( realURL );

        return Promise.resolve();
      }
    }

    UserAgentDeviceTypes.setOnBody();

    if ( ( data as  ElectronAppInitializerData ).appLocation )
    {
      console.log( "ELECTRON APP" );
      this._electronInitializerData = data as ElectronAppInitializerData;

    }
    else
    {
      this._initializerData = data as AppInitializerData;
    }
    

    if ( data.templatesList )
    {
      let templatesList = data.templatesList;
      let templateStylesMode = this.initializerData.addTemplateStyles ? 
                                 TemplatesManagerMode.ADD_STYLES_TO_HEAD : 
                                 TemplatesManagerMode.IGNORE_STYLES;
                                 
      this.templatesManager.setMode( templateStylesMode );
      templatesList.forEach( c => this.templatesManager.addTemplateHTML( c ) );          
    }
    
    if ( this._initializerData )
    {
      //console.log( "PAGE HANDLER FOR WEB" );
      let appData = this._initializerData;
      this._pageHandler = new PageHandler( appData.localAdress, appData.webAdress, data.disableForceHTTPS );
    }
    else
    {
      //console.log( "PAGE HANDLER FOR APP" );
      let electronData = this._electronInitializerData;
      this._pageHandler = new PageHandler( electronData.appLocation, null, electronData.disableForceHTTPS, PageHandlerMode.ELECTRON );
    }
    

    this.pageHandler.setPageRootTag( data.pageRoot );

    if ( this._initializerData.pagesPath )
    {
      this.pageHandler.setPagesPath( this._initializerData.pagesPath );
    }

    
    this.onAnimationFrame.run();    

    this.onAnimationFrame.addListener(
      ()=>
      {
        this.landscapeScale.update();
        this.insight.update();
        
      } 
    ) 

    this.activityAnalyser.start();

    Fullscreen.setFlagOnChange();

    await this.pageHandler.initialize();

    await this.initializePage();    

    HashScroll.applyOnDocument( this.onAnimationFrame );

    await sleep( 300 );
    
    App.appReadyFlag.set( document.body );
  }

  static appReadyFlag = new ClassFlag( "app-ready" );

  async initializePage()
  {
    while ( ! this.loaded )
    {
      await nextFrame();
    }

    //console.log( "App.initializePage" );
    // this.insight.grabElements();
    this.templatesManager.processChildren( document.body );


    this.insight.grabElements();
    
    this.pageHandler.replaceLinks();
    this.pageHandler.resolveRootPaths( document );
    

    return Promise.resolve();
  } 

  static updateAll()
  {
    Insight.updateAll();
  }
}