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import {Component, Input, ViewChild} from '@angular/core';
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import {Observable}       from 'rxjs';
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import { Router, ActivatedRoute} from '@angular/router';
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import {Filter, Value,AdvancedField} from '../searchUtils/searchHelperClasses.class';
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import {SearchProjectsService} from '../../services/searchProjects.service';
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import {SearchResult}     from '../../utils/entities/searchResult';
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import {ErrorCodes} from '../../utils/properties/errorCodes';
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import {ErrorMessagesComponent}    from '../../utils/errorMessages.component';
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import {AdvancedSearchPageComponent} from '../searchUtils/advancedSearchPage.component';
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import {SearchFields, FieldDetails} from '../../utils/properties/searchFields';
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import {SearchUtilsClass } from '../searchUtils/searchUtils.class';
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import{EnvProperties} from '../../utils/properties/env-properties';
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@Component({
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    selector: 'advanced-search-projects',
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    template: `
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    <advanced-search-page pageTitle="Advanced Search for Projects" entityType="project"
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                 type = "projects"
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                 [(results)] = "results"
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                 [(searchUtils)] = "searchUtils"
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                 [(fieldIds)]="fieldIds" [(fieldIdsMap)]="fieldIdsMap"   [(selectedFields)]="selectedFields"
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                 (queryChange)="queryChanged($event)"
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                 [csvParams]="csvParams" csvPath="projects" simpleSearchLink="/search/find/projects"
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                 [disableForms]="disableForms"
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                 [loadPaging]="loadPaging"
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                 [oldTotalResults]="oldTotalResults"  [piwikSiteId]=piwikSiteId
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                 searchFormClass="projectsSearchForm">
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    </advanced-search-page>
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    `
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 })
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export class AdvancedSearchProjectsComponent {
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  private errorCodes: ErrorCodes;
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  private errorMessages: ErrorMessagesComponent;
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@Input() piwikSiteId = null;
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  public results =[];
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  public filters =[];
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  public searchUtils:SearchUtilsClass = new SearchUtilsClass();
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  public searchFields:SearchFields = new SearchFields();
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  public fieldIds:  string[] = this.searchFields.PROJECT_ADVANCED_FIELDS;
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  public fieldIdsMap = this.searchFields.PROJECT_FIELDS;
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  public selectedFields:AdvancedField[] =  [];
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  properties:EnvProperties;
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  @ViewChild (AdvancedSearchPageComponent) searchPage : AdvancedSearchPageComponent ;
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  public resourcesQuery = "(oaftype exact project)";
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  public csvParams: string;
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  public disableForms: boolean = false;
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  public loadPaging: boolean = true;
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  public oldTotalResults: number = 0;
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  public pagingLimit: number = 0;
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  public isPiwikEnabled;
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  constructor (private route: ActivatedRoute, private _searchProjectsService: SearchProjectsService ) {
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    this.results =[];
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    this.errorCodes = new ErrorCodes();
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    this.errorMessages = new ErrorMessagesComponent();
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    this.searchUtils.status = this.errorCodes.LOADING;
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  }
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  ngOnInit() {
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    this.route.data
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      .subscribe((data: { envSpecific: EnvProperties }) => {
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        this.properties= data.envSpecific;
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        this.searchUtils.baseUrl = data.envSpecific.searchLinkToAdvancedProjects;
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         this.pagingLimit = data.envSpecific.pagingLimit;
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         this.isPiwikEnabled = data.envSpecific.enablePiwikTrack;
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      });
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    //var errorCodes:ErrorCodes = new ErrorCodes();
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    this.searchUtils.status = this.errorCodes.LOADING;
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    this.sub =  this.route.queryParams.subscribe(params => {
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      if(params['page'] && this.searchUtils.page != params['page']) {
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        this.loadPaging = false;
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        this.oldTotalResults = this.searchUtils.totalResults;
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      }
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      let page = (params['page']=== undefined)?1:+params['page'];
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      this.searchUtils.page = ( page <= 0 ) ? 1 : page;
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      this.searchUtils.size = (params['size']=== undefined)?10:+params['size'];
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      if(this.searchUtils.size != 5 && this.searchUtils.size != 10 && this.searchUtils.size != 20 && this.searchUtils.size != 50) {
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        this.searchUtils.size = 10;
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      }
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      this.searchPage.fieldIds = this.fieldIds;
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      this.selectedFields =[];
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      this.searchPage.selectedFields = this.selectedFields;
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      this.searchPage.fieldIdsMap = this.fieldIdsMap;
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      this.searchPage.getSelectedFiltersFromUrl(params);
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      this.getResults(this.searchPage.createQueryParameters(),  this.searchUtils.page, this.searchUtils.size);
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    });
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  }
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  ngOnDestroy() {
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    this.sub.unsubscribe();
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  }
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  sub: any;
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  public getResults(parameters:string, page: number, size: number){
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    if(page > this.pagingLimit) {
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      size=0;
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    }
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    if(page <= this.pagingLimit || this.searchUtils.status == this.errorCodes.LOADING) {
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      if(parameters!= null && parameters != ''  ) {
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        this.csvParams ="&fq=( "+this.resourcesQuery + "and (" + parameters + "))";
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      }else{
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        this.csvParams ="&fq="+this.resourcesQuery;
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      }
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      //var errorCodes:ErrorCodes = new ErrorCodes();
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      this.searchUtils.status = this.errorCodes.LOADING;
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      //this.searchPage.openLoading();
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      this.disableForms = true;
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      this.results = [];
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      this.searchUtils.totalResults = 0;
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      //console.info("Advanced Search for Publications: Execute search query "+parameters);
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       this._searchProjectsService.advancedSearchProjects(parameters,  page, size, this.properties).subscribe(
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          data => {
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              this.searchUtils.totalResults = data[0];
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              this.results = data[1];
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              this.searchPage.updateBaseUrlWithParameters();
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              //var errorCodes:ErrorCodes = new ErrorCodes();
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              this.searchUtils.status = this.errorCodes.DONE;
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              if(this.searchUtils.totalResults == 0 ){
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                this.searchUtils.status = this.errorCodes.NONE;
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              }
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              //this.searchPage.closeLoading();
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              this.disableForms = false;
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              if(this.searchUtils.status == this.errorCodes.DONE) {
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                // Page out of limit!!!
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                let totalPages:any = this.searchUtils.totalResults/(this.searchUtils.size);
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                if(!(Number.isInteger(totalPages))) {
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                    totalPages = (parseInt(totalPages, 10) + 1);
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                }
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                if(totalPages < page) {
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                  this.searchUtils.totalResults = 0;
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                  this.searchUtils.status = this.errorCodes.OUT_OF_BOUND;
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                }
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              }
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          },
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          err => {
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              //console.log(err);
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              this.handleError("Error getting projects", err);
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              this.searchUtils.status = this.errorMessages.getErrorCode(err.status);
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              //TODO check erros (service not available, bad request)
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              // if( ){
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              //   this.searchUtils.status = errorCodes.ERROR;
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              // }
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              //var errorCodes:ErrorCodes = new ErrorCodes();
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              //this.searchUtils.status = errorCodes.NOT_AVAILABLE;
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              /*if(err.status == '404') {
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                this.searchUtils.status = this.errorCodes.NOT_FOUND;
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              } else if(err.status == '500') {
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                this.searchUtils.status = this.errorCodes.ERROR;
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              } else {
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                this.searchUtils.status = this.errorCodes.NOT_AVAILABLE;
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              }*/
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              //this.searchPage.closeLoading();
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              this.disableForms = false;
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          }
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      );
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    }
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  }
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  private setFilters(){
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    //TODO set filters from
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  }
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  public queryChanged($event) {
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    this.loadPaging = true;
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    var parameters = $event.value;
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    //this.getResults(parameters, this.searchUtils.page,this.searchUtils.size);
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    //console.info("queryChanged: Execute search query "+parameters);
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  }
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  private handleError(message: string, error) {
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    console.error("Projects advanced Search Page: "+message, error);
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  }
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}