D-Net

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

import {Observable}       from 'rxjs';

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 {ErrorCodes} from '../../utils/properties/errorCodes';

import {ErrorMessagesComponent}    from '../../utils/errorMessages.component';

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

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

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

import{EnvProperties} from '../../utils/properties/env-properties';

@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="publications" simpleSearchLink="/search/find/publications"

                 [disableForms]="disableForms"

                 [loadPaging]="loadPaging"

                 [oldTotalResults]="oldTotalResults"

                 [(openaireLink)]=openaireLink

                 [piwikSiteId]=piwikSiteId [hasPrefix]="hasPrefix"

                 searchFormClass="publicationsSearchForm"

                 [(sort)]=sort >

    </advanced-search-page>

    `

 })

export class AdvancedSearchPublicationsComponent {

  private errorCodes: ErrorCodes;

  private errorMessages: ErrorMessagesComponent;

  @Input() piwikSiteId = null;

  @Input() hasPrefix: boolean = true;

  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;

  @Input() openaireLink: string ;

  @Input() customFilter:SearchCustomFilter= null;

  public pagingLimit: number = 0;

  public isPiwikEnabled;

  public sort: boolean = true;

  properties:EnvProperties;

  @ViewChild (AdvancedSearchPageComponent) searchPage : AdvancedSearchPageComponent ;

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

    this.results =[];

    this.errorCodes = new ErrorCodes();

    this.errorMessages = new ErrorMessagesComponent();

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

  }

  ngOnInit() {

    this.route.data

      .subscribe((data: { envSpecific: EnvProperties }) => {

        this.properties= data.envSpecific;

        this.searchUtils.baseUrl = data.envSpecific.searchLinkToAdvancedPublications;

         this.pagingLimit = data.envSpecific.pagingLimit;

         this.isPiwikEnabled = data.envSpecific.enablePiwikTrack;

      });

    //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.searchUtils.size = (params['size']=== undefined)?10:+params['size'];

      if(this.searchUtils.size != 5 && this.searchUtils.size != 10 && this.searchUtils.size != 20 && this.searchUtils.size != 50) {

        this.searchUtils.size = 10;

      }

      this.searchUtils.sortBy = (params['sortBy'])?params['sortBy']:'';

      if(this.searchUtils.sortBy && this.searchUtils.sortBy != "resultdateofacceptance,descending" && this.searchUtils.sortBy != "resultdateofacceptance,ascending") {

        this.searchUtils.sortBy = "";

      }

      this.searchPage.fieldIds = this.fieldIds;

      this.selectedFields =[];

      this.searchPage.selectedFields = this.selectedFields;

      this.searchPage.fieldIdsMap = this.fieldIdsMap;

      this.searchPage.customFilter = this.customFilter;

      this.searchPage.getSelectedFiltersFromUrl(params);

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

    });

  }

  ngOnDestroy() {

    this.sub.unsubscribe();

  }

  sub: any;

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

    if(page > this.pagingLimit) {

      size=0;

    }

    if(page <= this.pagingLimit || this.searchUtils.status == this.errorCodes.LOADING) {

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

        this.csvParams ="&fq=("+this.resourcesQuery +" and (" + parameters + "))";

      }else{

        this.csvParams ="&fq="+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, sortBy, this.properties).subscribe(

          data => {

              this.searchUtils.totalResults = data[0];

              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);

              this.handleError("Error getting publications", err);

              this.searchUtils.status = this.errorMessages.getErrorCode(err.status);

              //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, this.searchUtils.sortBy);

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

  }

  private handleError(message: string, error) {

    console.error("Publications advanced Search Page: "+message, error);

  }

}