D-Net

import {Component, Input, ViewChild} from '@angular/core';

import {Observable}       from 'rxjs/Observable';

import { Router, ActivatedRoute} from '@angular/router';

import {Filter, Value,AdvancedField} from '../searchUtils/searchHelperClasses.class';

import {SearchPublicationsService} from '../../services/searchPublications.service';

import {SearchResult}     from '../../utils/entities/searchResult';

import {OpenaireProperties, ErrorCodes} from '../../utils/properties/openaireProperties';

import {AdvancedSearchPageComponent} from '../searchUtils/advancedSearchPage.component';

import {SearchFields, FieldDetails} from '../../utils/properties/searchFields';

import {SearchUtilsClass } from '../searchUtils/searchUtils.class';

@Component({

    selector: 'advanced-search-publications',

    template: `

    <advanced-search-page pageTitle="Advanced Search for Publications" entityType="publication"

                 type="publications"

                 [(results)] = "results"

                 [(searchUtils)] = "searchUtils"

                 [(fieldIds)]="fieldIds" [(fieldIdsMap)]="fieldIdsMap"   [(selectedFields)]="selectedFields"

                 (queryChange)="queryChanged($event)"

                 [csvParams]="csvParams" csvPath="resources" simpleSearchLink="/search/find/publications"

                 [disableForms]="disableForms"

                 [loadPaging]="loadPaging"

                 [oldTotalResults]="oldTotalResults">

    </advanced-search-page>

    `

 })

export class AdvancedSearchPublicationsComponent {

  private errorCodes: ErrorCodes;

  public results =[];

  public filters =[];

  public searchUtils:SearchUtilsClass = new SearchUtilsClass();

  public searchFields:SearchFields = new SearchFields();

  public fieldIds:  string[] = this.searchFields.RESULT_ADVANCED_FIELDS;

  public fieldIdsMap= this.searchFields.RESULT_FIELDS;

  public selectedFields:AdvancedField[] =  [];

  public resourcesQuery = "((oaftype exact result) and (resulttypeid exact publication))";

  public csvParams: string;

  public disableForms: boolean = false;

  public loadPaging: boolean = true;

  public oldTotalResults: number = 0;

  @ViewChild (AdvancedSearchPageComponent) searchPage : AdvancedSearchPageComponent ;

  constructor (private route: ActivatedRoute, private _searchPublicationsService: SearchPublicationsService ) {

    this.results =[];

    this.errorCodes = new ErrorCodes();

    this.searchUtils.status = this.errorCodes.LOADING;

    this.searchUtils.baseUrl = OpenaireProperties.searchLinkToAdvancedPublications;

  }

  ngOnInit() {

    //var errorCodes:ErrorCodes = new ErrorCodes();

    this.searchUtils.status = this.errorCodes.LOADING;

    this.sub =  this.route.queryParams.subscribe(params => {

      if(params['page'] && this.searchUtils.page != params['page']) {

        this.loadPaging = false;

        this.oldTotalResults = this.searchUtils.totalResults;

      }

      let page = (params['page']=== undefined)?1:+params['page'];

      this.searchUtils.page = ( page <= 0 ) ? 1 : page;

      this.searchPage.fieldIds = this.fieldIds;

      this.selectedFields =[];

      this.searchPage.selectedFields = this.selectedFields;

      this.searchPage.fieldIdsMap = this.fieldIdsMap;

      this.searchPage.getSelectedFiltersFromUrl(params);

      this.getResults(this.searchPage.createQueryParameters(),  this.searchUtils.page, this.searchUtils.size);

    });

  }

  ngOnDestroy() {

    this.sub.unsubscribe();

  }

  sub: any;

  public getResults(parameters:string, page: number, size: number){

      if(parameters!= null && parameters != ''  ) {

        this.csvParams ="&type=publications&query=("+this.resourcesQuery +" and (" + parameters + "))";

      }else{

        this.csvParams ="&type=publications&query="+this.resourcesQuery;

      }

    //var errorCodes:ErrorCodes = new ErrorCodes();

    this.searchUtils.status = this.errorCodes.LOADING;

    //this.searchPage.openLoading();

    this.disableForms = true;

    this.results = [];

    this.searchUtils.totalResults = 0;

    console.info("Advanced Search for Publications: Execute search query "+parameters);

     this._searchPublicationsService.advancedSearchPublications(parameters, page, size).subscribe(

        data => {

            this.searchUtils.totalResults = data[0];

            console.info("searchPubl total="+this.searchUtils.totalResults);

            this.results = data[1];

            this.searchPage.updateBaseUrlWithParameters();

            //var errorCodes:ErrorCodes = new ErrorCodes();

            this.searchUtils.status = this.errorCodes.DONE;

            if(this.searchUtils.totalResults == 0 ){

              this.searchUtils.status = this.errorCodes.NONE;

            }

            //this.searchPage.closeLoading();

            this.disableForms = false;

            if(this.searchUtils.status == this.errorCodes.DONE) {

              // Page out of limit!!!

              let totalPages:any = this.searchUtils.totalResults/(this.searchUtils.size);

              if(!(Number.isInteger(totalPages))) {

                  totalPages = (parseInt(totalPages, 10) + 1);

              }

              if(totalPages < page) {

                this.searchUtils.totalResults = 0;

                this.searchUtils.status = this.errorCodes.OUT_OF_BOUND;

              }

            }

        },

        err => {

            console.log(err);

            console.info("error");

            //TODO check erros (service not available, bad request)

            // if( ){

            //   this.searchUtils.status = ErrorCodes.ERROR;

            // }

            //var errorCodes:ErrorCodes = new ErrorCodes();

            //this.searchUtils.status = errorCodes.NOT_AVAILABLE;

            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;

            }

            //this.searchPage.closeLoading();

            this.disableForms = false;

        }

    );

  }

  public queryChanged($event) {

    this.loadPaging = true;

    var parameters = $event.value;

    this.getResults(parameters, this.searchUtils.page,this.searchUtils.size);

    console.info("queryChanged: Execute search query "+parameters);

  }

}