openaire-library/utils/fetchEntitiesClasses/fetchOrganizations.class.ts

 import {SearchOrganizationsService} from '../../services/searchOrganizations.service';
 import { ErrorCodes} from '../../utils/properties/openaireProperties';
 import {SearchUtilsClass } from '../../searchPages/searchUtils/searchUtils.class';
 import{EnvProperties} from '../../utils/properties/env-properties';

export class FetchOrganizations {
  private errorCodes: ErrorCodes;

  public results =[];

  public searchUtils:SearchUtilsClass = new SearchUtilsClass();
  public sub: any;
  public subResults: any;



  constructor ( private _searchOrganizationsService: SearchOrganizationsService ) {

    this.errorCodes = new ErrorCodes();
    this.searchUtils.status = this.errorCodes.LOADING;

  }


  public ngOnDestroy() {
    if(this.sub){
      this.sub.unsubscribe();
    }
    if(this.subResults){
      this.subResults.unsubscribe();
    }
  }


    public getResultsByKeyword(keyword:string , page: number, size: number, properties:EnvProperties){
      var parameters = "";
      if(keyword.length > 0){
        parameters = "q=" + keyword;
      }

      //var errorCodes:ErrorCodes = new ErrorCodes();
      this.searchUtils.status = this.errorCodes.LOADING;

      this.subResults = this._searchOrganizationsService.searchOrganizations(parameters, null, page, size, [], properties).subscribe(
          data => {
              this.searchUtils.totalResults = data[0];
              console.info("search Organizations: [Parameters:"+parameters+" ]  [total results:"+this.searchUtils.totalResults+"]");
              this.results = data[1];

              //var errorCodes:ErrorCodes = new ErrorCodes();
              this.searchUtils.status = this.errorCodes.DONE;
              if(this.searchUtils.totalResults == 0 ){
                this.searchUtils.status = this.errorCodes.NONE;
              }
           },
          err => {
              console.log(err);
               //TODO check erros (service not available, bad request)
              // if( ){
              //   this.searchUtils.status = ErrorCodes.ERROR;
              // }
              //var errorCodes:ErrorCodes = new ErrorCodes();
              //this.searchUtils.status = errorCodes.ERROR;

              if(err.status == '404') {
                this.searchUtils.status = this.errorCodes.NOT_FOUND;
              } else if(err.status == '500') {
                this.searchUtils.status = this.errorCodes.ERROR;
              } else {
                this.searchUtils.status = this.errorCodes.NOT_AVAILABLE;
              }
           }
      );
    }


}