D-Net

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

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

import {Location} from '@angular/common';

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

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

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

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

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

import {SearchPageComponent } from '../searchUtils/searchPage.component';

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

import {DOI} from '../../utils/string-utils.class';

@Component({

    selector: 'search-datasets',

    template: `

    <search-page pageTitle="Search Datasets" type="dataset" [(filters)] = "filters"

                 [(results)] = "results"   [(searchUtils)] = "searchUtils"

                 [baseUrl] = "baseUrl" (queryChange)="queryChanged($event)"  >

    </search-page>

    `

})

export class SearchDatasetsComponent {

  public results =[];

  public filters: Filter[] =[];

  // public totalResults:number  = 0 ;

  public baseUrl:string;

  public searchUtils:SearchUtilsClass = new SearchUtilsClass();

  private sub: any;

  private subResults: any;

  private searchFields:SearchFields = new SearchFields();

  public refineFields: string[] =  this.searchFields.RESULT_REFINE_FIELDS;

  public fieldIdsMap=this.searchFields.RESULT_FIELDS;

  private urlParams : Map<string, string>;

  private _location:Location;

  @ViewChild (SearchPageComponent) searchPage : SearchPageComponent ;

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

    var errorCodes:ErrorCodes = new ErrorCodes();

    this.searchUtils.status =errorCodes.LOADING;

    this.baseUrl = OpenaireProperties.getLinkToSearchDatasets();

  }

  public ngOnInit() {

    this.searchPage.refineFields = this.refineFields;

     this.searchPage.fieldIdsMap = this.fieldIdsMap;

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

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

      this.searchUtils.page = (params['page']=== undefined)?1:+params['page'];

      // this.getRefineResults();

      //this.getResults(this.searchUtils.keyword, this.searchUtils.page, this.searchUtils.size, "searchPage");

      var queryParameters = this.searchPage.getQueryParametersFromUrl(params);

       this._getResults(queryParameters, true, this.searchUtils.page, this.searchUtils.size);

    });

  }

  public ngOnDestroy() {

    if(this.sub){

      this.sub.unsubscribe();

    }

    if(this.subResults){

      this.subResults.unsubscribe();

    }

  }

public getResultsForEntity(entity:string, id:string, page: number, size: number){

  var parameters = "";

  if(entity == "project") {

    parameters = "projects/"+id;

  } else if(entity == "person") {

    parameters = "people/"+id;

  }

  if(parameters != "") {

      this._searchDatasetsService.searchDatasetsForEntity(parameters, page, size).subscribe(

          data => {

              this.searchUtils.totalResults = data[0];

              console.info("search Datasets for "+entity+": [Parameters:"+parameters+" ]  [total results:"+this.searchUtils.totalResults+"]");

              this.results = data[1];

              var errorCodes:ErrorCodes = new ErrorCodes();

              this.searchUtils.status = errorCodes.DONE;

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

                this.searchUtils.status = 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;

          }

      );

  }

}

public getResultsForDataproviders(id:string, resultsFrom:string, page: number, size: number){

  var parameters;

  if(resultsFrom == "collectedFrom") {

      parameters = "datasets?fq=collectedfromdatasourceid exact "+'"'+id+'"';

  } else if(resultsFrom == "hostedBy") {

      parameters = "datasets?fq=resulthostingdatasourceid exact "+'"'+id+'"';

  }

  if(parameters != "") {

      this._searchDatasetsService.searchDatasetsForDataproviders(parameters, page, size).subscribe(

          data => {

              this.searchUtils.totalResults = data[0];

              console.info("search Datasets for Dataproviders: [Parameters:"+parameters+" ]  [total results:"+this.searchUtils.totalResults+"]");

              this.results = data[1];

              var errorCodes:ErrorCodes = new ErrorCodes();

              this.searchUtils.status = errorCodes.DONE;

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

                this.searchUtils.status = 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;

          }

      );

  }

}

public getResults(keyword:string,refine:boolean, page: number, size: number){

  var parameters = "";

  if(keyword.length > 0){

    var DOIs:string[] = DOI.getDOIsFromString(keyword);

    var doisParams = "";

    for(var i =0 ;i < DOIs.length; i++){

      doisParams+=(doisParams.length > 0?" or ":"")+'((pidclassid exact doi) and (pid exact "'+ DOIs[i]+'"))';

    }

    if(doisParams.length > 0){

      parameters += "q=("+doisParams+")"

    }else{

      parameters = "q="+'"' + keyword + '"';

    }

  }

  this._getResults(parameters,refine,page,size);

}

private _getResults(parameters:string,refine:boolean, page: number, size: number){

  if(!refine && !this.searchPage){

      this.searchPage = new SearchPageComponent(this._location);

  }

  this.subResults = this._searchDatasetsService.searchDatasets(parameters,(refine)?this.searchPage.getRefineFieldsQuery():null, page, size, this.searchPage.getFields()).subscribe(

      data => {

          this.searchUtils.totalResults = data[0];

          console.info("search Datasets: [Parameters:"+parameters+" ]  [total results:"+this.searchUtils.totalResults+"]");

          this.results = data[1];

          this.filters = data[2];

          this.searchPage.checkSelectedFilters(this.filters);

          this.searchPage.updateBaseUrlWithParameters(this.filters);

          var errorCodes:ErrorCodes = new ErrorCodes();

          this.searchUtils.status = errorCodes.DONE;

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

            this.searchUtils.status = 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;

      }

  );

}

  private setFilters(){

    //TODO set filters from

  }

  public queryChanged($event) {

    var parameters = $event.value;

    //this.getResults(parameters, this.searchUtils.page, this.searchUtils.size, "searchPage");

    this._getResults(parameters, true, this.searchUtils.page, this.searchUtils.size);

  }

}