import {Injectable} from '@angular/core';
import {HttpClient} from "@angular/common/http";

import {StringUtils} from '../string-utils.class';
import {EnvProperties} from '../properties/env-properties';
import {Observable} from "rxjs";


@Injectable()
export class PiwikService {
    constructor(private http: HttpClient ) {}
  trackViewForCustomUrl (properties:EnvProperties, title, pageparams, siteId = null):any {
    let piwikId= ((siteId!=null)?siteId:properties.piwikSiteId);
    if(typeof location !== 'undefined' && piwikId){
      return this.doTrackView(properties,title,piwikId,location.href.split("?")[0] + "?" + pageparams);
    }
  }
    trackView (properties:EnvProperties, title, siteId = null):any {
      let piwikId= ((siteId!=null)?siteId:properties.piwikSiteId);
      if(typeof location !== 'undefined' && piwikId){
       return this.doTrackView(properties,title,piwikId,location.href);
      }
    }
  private doTrackView (properties:EnvProperties, title, siteId, pageURL):any {

    let ua = this.getUserAgent();
    let referrer = this.getReferrer();
    let piwikId= ((siteId!=null)?siteId:properties.piwikSiteId);
    if(typeof location !== 'undefined' && piwikId){
      // console.log("Piwik - View: " + pageURL, title);
      var url = properties.piwikBaseUrl+piwikId+"&rec=1&url="+StringUtils.URIEncode(pageURL)+"&action_name="+StringUtils.URIEncode(title)+
        ((ua != null && ua.length > 0)?('&ua='+StringUtils.URIEncode(ua)):'')+
        ((referrer != null && referrer.length > 0)?('&urlref='+StringUtils.URIEncode(referrer)):'');
      // console.log("Piwik - View: " + url);
      // return Observable.of(new Object()); // for testing
      return this.http.get( url, {responseType: 'blob'});
      // .do(request => console.info("Piwik request completed" ));

    }
  }
    trackDownload (properties:EnvProperties, type = "", siteId = null):any {
      var ua = this.getUserAgent();
      var referrer = this.getReferrer();
      var url = properties.piwikBaseUrl+((siteId!=null)?siteId:properties.piwikSiteId)+"&rec=1&url="+StringUtils.URIEncode(location.href)+"&download="+StringUtils.URIEncode(location.href+"#"+type)+
      ((ua != null && ua.length > 0)?('&ua='+StringUtils.URIEncode(ua)):'')+
      ((referrer != null && referrer.length > 0)?('&urlref='+StringUtils.URIEncode(referrer)):'');
      //console.log("Piwik - trackDownload: "+url);

      return this.http.get( url, {responseType: 'blob'});
                    //.do(request => console.info("Piwik request completed" ));

    }
    private getUserAgent(){
      if (typeof navigator !== 'undefined') {
        //console.log("navigator.userAgent:" + navigator.userAgent);
        return navigator.userAgent;

      }else{
        return null;
      }
    }
    private getReferrer(){
      var referrer = "";
      if (typeof document !== 'undefined') {
        //console.log("document.referrer:" + document.referrer);
        referrer = document.referrer;

      }
      if((referrer == null || referrer.length == 0)&&typeof localStorage !== 'undefined'){

          referrer =localStorage.getItem('previousRoute');
       }
       return referrer;
    }
    parse(data:any){
    }

}