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 {SearchDatasetsService} from '../../services/searchDatasets.service';

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

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

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

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

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

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

@Component({

    selector: 'advanced-search-datasets',

    template: `

    <advanced-search-page pageTitle="Advanced Search for Research Data" entityType="dataset"

                 type = "research data"

                 [(results)] = "results"

                 [(searchUtils)] = "searchUtils"

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

                 (queryChange)="queryChanged($event)"

                 [csvParams]="csvParams" csvPath="datasets" simpleSearchLink="/search/find/datasets"

                 [disableForms]="disableForms"

                 [loadPaging]="loadPaging"

                 [oldTotalResults]="oldTotalResults">

    </advanced-search-page>

    `

 })

export class AdvancedSearchDatasetsComponent {

  private errorCodes: ErrorCodes;

  properties:EnvProperties;

  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[] =  [];

  @ViewChild (AdvancedSearchPageComponent) searchPage : AdvancedSearchPageComponent ;

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

  public csvParams: string;

  public disableForms: boolean = false;

  public loadPaging: boolean = true;

  public oldTotalResults: number = 0;

  public pagingLimit: number = 0;

  public isPiwikEnabled;

  constructor (private route: ActivatedRoute, private _searchDatasetsService: SearchDatasetsService ) {

    this.results =[];

    this.errorCodes = new ErrorCodes();

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

  }

  ngOnInit() {

    this.route.data

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

        this.properties= data.envSpecific;

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

         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.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(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 Research Data: Execute search query "+parameters);

      this._searchDatasetsService.advancedSearchDatasets(parameters, page, size, this.properties).subscribe(

        data => {

                this.searchUtils.totalResults = data[0];

                console.info("search Research Data 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;

        }

      );

    }

  }

  private setFilters(){

    //TODO set filters from

  }

  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);

  }

}