graph/src/app/home/home.component.ts

import {Component} from '@angular/core';
import {Subscription} from 'rxjs';
import {ActivatedRoute, Router} from '@angular/router';
import {Location} from '@angular/common';
import "rxjs/add/observable/zip";
import {Title, Meta} from '@angular/platform-browser';
import {ConfigurationService} from '../openaireLibrary/utils/configuration/configuration.service';
import {SearchDataprovidersService} from '../openaireLibrary/services/searchDataproviders.service';
import {SearchProjectsService} from '../openaireLibrary/services/searchProjects.service';
import {SearchOrganizationsService} from '../openaireLibrary/services/searchOrganizations.service';
import {RefineFieldResultsService} from '../openaireLibrary/services/refineFieldResults.service';
import {NumberUtils} from '../openaireLibrary/utils/number-utils.class';

import {RouterHelper} from '../openaireLibrary/utils/routerHelper.class';
import {EnvProperties} from '../openaireLibrary/utils/properties/env-properties';
import {ErrorCodes} from '../openaireLibrary/utils/properties/errorCodes';
import {PiwikService} from '../openaireLibrary/utils/piwik/piwik.service';
import {SEOService} from '../openaireLibrary/sharedComponents/SEO/SEO.service';
import {SearchResearchResultsService} from "../openaireLibrary/services/searchResearchResults.service";
import {properties} from "../../environments/environment";
import {portals} from "./portals";

@Component({
  selector: 'home',
  templateUrl: 'home.component.html',
  styleUrls: ['home.component.css']
})
export class HomeComponent {
  public pageTitle = "OpenAIRE - Research Graph";
  
  public errorCodes: ErrorCodes = new ErrorCodes();
  public routerHelper: RouterHelper = new RouterHelper();
  
  public publicationsSize: any = null;
  public datasetsSize: any = null;
  public datasetsLinkedSize: any = null;
  public softwareLinkedSize: any = null;
  public softwareSize: any = null;
  public otherSize: any = null;
  public fundersSize: any = null;
  public projectsSize: any = null;
  public datasourcesSize: any = null;
  public portals: any[] = portals;
  public state: number = 0;
  private timeouts: any[] = [];
  
  properties: EnvProperties = properties;
  
  subs: Subscription[] = [];
  
  constructor(
    private route: ActivatedRoute,
    private _router: Router,
    private _searchResearchResultsService: SearchResearchResultsService,
    private _searchDataprovidersService: SearchDataprovidersService,
    private _searchProjectsService: SearchProjectsService,
    private _searchOrganizationsService: SearchOrganizationsService,
    private _refineFieldResultsService: RefineFieldResultsService,
    private location: Location, private _piwikService: PiwikService,
    private config: ConfigurationService, private _meta: Meta, private _title: Title, private seoService: SEOService
  ) {
    
    let description = "OpenAIRE Research Graph is an open resource that aggregates a collection of research data properties (metadata, links) available within the OpenAIRE Open Science infrastructure for funders, organizations, researchers, research communities and publishers to interlink information by using a semantic graph database approach.";
    
    this._title.setTitle(this.pageTitle);
    this._meta.updateTag({content: description}, "name='description'");
    this._meta.updateTag({content: description}, "property='og:description'");
    this._meta.updateTag({content: this.pageTitle}, "property='og:title'");
  }
  
  public ngOnInit() {
    if (this.properties) {
      let url = this.properties.domain + this.properties.baseLink + this._router.url;
      this.seoService.createLinkForCanonicalURL(url, false);
      this._meta.updateTag({content: url}, "property='og:url'");
      if (this.properties.enablePiwikTrack && (typeof document !== 'undefined')) {
        this.subs.push(this._piwikService.trackView(this.properties, this.pageTitle).subscribe());
      }
      this.getNumbers();
      this.animation();
    }
  }
  
  public ngOnDestroy() {
    for (let sub of this.subs) {
      sub.unsubscribe();
    }
    this.clearTimeouts();
  }
  
  private animation() {
    this.timeouts.push(setTimeout(() => {
      this.animation();
      if (this.state === (this.portals.length -1)) {
        this.state = 0
      } else {
        this.state++;
      }
    }, 4000));
  }
  
  private changeSlide(slide: number) {
    this.clearTimeouts();
    this.state = slide;
    this.animation();
  }
  
  private clearTimeouts() {
    this.timeouts.forEach(timeout => {
      clearTimeout(timeout);
    });
    this.state = 0;
  }
  
  private getNumbers() {
    this.subs.push(this._searchResearchResultsService.numOfSearchResults("publication", "", this.properties).subscribe(
      data => {
        if (data && data > 0) {
          this.publicationsSize = NumberUtils.roundNumber(data);
          
        }
      },
      err => {
        this.handleError("Error getting number of publications", err);
      }
    ));
    this.subs.push(this._searchResearchResultsService.numOfSearchResults("dataset", "", this.properties).subscribe(
      data => {
        if (data && data > 0) {
          this.datasetsSize = NumberUtils.roundNumber(data);
        }
      },
      err => {
        //console.log(err);
        this.handleError("Error getting number of research data", err);
      }
    ));
    this.subs.push(this._searchResearchResultsService.numOfSearchResultsLinkedToPub("dataset", this.properties).subscribe(
      data => {
        if (data && data > 0) {
          this.datasetsLinkedSize = NumberUtils.roundNumber(data);
        }
      },
      err => {
        this.handleError("Error getting number of linkedresearch data", err);
      }
    ));
    this.subs.push(this._searchResearchResultsService.numOfSearchResults("software", "", this.properties).subscribe(
      data => {
        if (data && data > 0) {
          this.softwareSize = NumberUtils.roundNumber(data);
        }
      },
      err => {
        this.handleError("Error getting number of software data", err);
      }
    ));
    this.subs.push(this._searchResearchResultsService.numOfSearchResultsLinkedToPub("software", this.properties).subscribe(
      data => {
        if (data && data > 0) {
          this.softwareLinkedSize = NumberUtils.roundNumber(data);
        }
      },
      err => {
        this.handleError("Error getting number of linked software", err);
      }
    ));
    this.subs.push(this._searchResearchResultsService.numOfSearchResults("other", "", this.properties).subscribe(
      data => {
        if (data && data > 0) {
          this.otherSize = NumberUtils.roundNumber(data);
        }
      },
      err => {
        this.handleError("Error getting number of software data", err);
      }
    ));
    this.subs.push(this._refineFieldResultsService.getRefineFieldsResultsByEntityName(["funder"], "project", this.properties).subscribe(
      data => {
        
        
        if (data[0] && data[0] > 0) {
          this.projectsSize = NumberUtils.roundNumber(data[0]);
        }
        if (data[1].length > 0 && data[1][0].filterId == "funder" && data[1][0].values) {
          this.fundersSize = NumberUtils.roundNumber(data[1][0].values.length);
        }
        
      },
      err => {
        this.handleError("Error getting 'funder' field results of projects", err);
      })
    );
    
    this.subs.push(this._searchDataprovidersService.numOfSearchDataproviders("", this.properties).subscribe(
      data => {
        if (data && data > 0) {
          this.datasourcesSize = NumberUtils.roundNumber(data);
        }
        
      },
      err => {
        this.handleError("Error getting number of content providers", err);
      }
    ));
  }
  
  private handleError(message: string, error) {
    console.error("Home Page: " + message, error);
  }
}