D-Net

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

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

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

import {SearchDataprovidersService} from '../services/searchDataproviders.service';

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

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

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

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

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

import {NewSearchPageComponent} from "./searchUtils/newSearchPage.component";

import {DatasourcesHelperClass} from "./searchUtils/datasourcesHelper.class";

import {properties} from "../../../environments/environment";

@Component({

    selector: 'search-dataproviders',

    template: `

    <new-search-page

      pageTitle="{{(simpleView?'':'Advanced ')}} Find research {{ pageTitle }}"

      entityType="dataprovider"

      type="content providers"

      [results]="results"

      [searchUtils]="searchUtils"

      [sortedByChanged]="searchUtils.sortBy" [resultsPerPageChanged]="searchUtils.size"

      [fieldIds]="fieldIds" [fieldIdsMap]="fieldIdsMap" [selectedFields]="selectedFields"

      [csvParams]="csvParams" csvPath="datasources"

      [simpleSearchLink]="simpleSearchLink" [advancedSearchLink]="advancedSearchLink"

      [disableForms]="disableForms"

      [disableRefineForms]="disableRefineForms"

      [loadPaging]="loadPaging"

      [oldTotalResults]="oldTotalResults"

      [openaireLink]=openaireLink

      [includeOnlyResultsAndFilter]="includeOnlyResultsAndFilter"

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

      [searchFormClass]="type!='deposit'?'datasourcesSearchForm':''"

      [entitiesSelection]="type=='all'"  [showSwitchSearchLink]="showSwitchSearchLink"  

      [filters]="filters"

      [simpleView]="simpleView" formPlaceholderText="Search by name, description, subject..." 

      [showResultCount]="(type=='all' || type == 'deposit')" [showIndexInfo]="type!='deposit'"

      [tableViewLink]="tableViewLink"

      [sort]="false" [showBreadcrumb]="showBreadcrumb" [basicMetaDescription]="metaDescription">

    </new-search-page>

<!--    [filters]="filters"-->

    `

 })

export class SearchDataProvidersComponent {

  private errorCodes: ErrorCodes;

  private errorMessages: ErrorMessagesComponent;

  @Input() piwikSiteId = null;

  @Input() customFilter:SearchCustomFilter= null;

  @Input() tableViewLink;

  public results =[];

  public filters =[];

  public searchUtils:SearchUtilsClass = new SearchUtilsClass();

  public searchFields:SearchFields = new SearchFields();

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

  public fieldIdsMap= this.searchFields.DATASOURCE_FIELDS;

  public selectedFields:AdvancedField[] =  [];

  public resourcesQuery = "(oaftype exact datasource)";

  public csvParams: string;

  public disableForms: boolean = false;

  public disableRefineForms: boolean = false;

  public loadPaging: boolean = true;

  public oldTotalResults: number = 0;

  public pagingLimit: number = 0;

  public isPiwikEnabled;

  properties:EnvProperties;

  @Input() type: "all" | "registries" | "journals" | "compatible" | "deposit" = "all";

  public refineFields: string[];

  pageTitle;

  @ViewChild(NewSearchPageComponent) searchPage: NewSearchPageComponent;

  @Input() simpleView: boolean = true;

  @Input() simpleSearchLink: string = "";

  advancedSearchLink: string = "";

  @Input() hasPrefix: boolean = true;

  @Input() openaireLink: string;

  @Input() includeOnlyResultsAndFilter: boolean = false;

  @Output() searchPageUpdates = new EventEmitter();

  @Input() showSwitchSearchLink:boolean;

  @Input() showBreadcrumb: boolean = false;

  subs: any[] = [];

  searchResultsSub: any;

  searchFiltersSub: any;

  metaDescription = [];

  constructor (private route: ActivatedRoute, private _searchDataProvidersService: SearchDataprovidersService ) {

    this.results =[];

    this.errorCodes = new ErrorCodes();

    this.errorMessages = new ErrorMessagesComponent();

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

  }

  ngOnInit() {

    this.refineFields = DatasourcesHelperClass.getrefineFields(this.type);

    this.pageTitle = DatasourcesHelperClass.getTitle(this.type);

    this.metaDescription = DatasourcesHelperClass.getDescription(this.type)

    if(this.showSwitchSearchLink == null){

      this.showSwitchSearchLink = (this.type == "all");

    }

    this.properties= properties;

    if (!this.simpleSearchLink) {

      this.simpleSearchLink = this.properties.searchLinkToDataProviders;

    }        this.advancedSearchLink = this.properties.searchLinkToAdvancedDataProviders;

    this.searchUtils.baseUrl = (this.simpleView)?this.simpleSearchLink:this.advancedSearchLink;

     this.pagingLimit = properties.pagingLimit;

     this.isPiwikEnabled = properties.enablePiwikTrack;

    let firstLoad = true;

    this.subs.push(this.route.queryParams.subscribe(params => {

     this.loadPaging = true;

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

       this.loadPaging = false;

       this.oldTotalResults = this.searchUtils.totalResults;

     }

     var refine = true;

      if(this.searchPage.searchUtils.refineStatus == this.errorCodes.DONE) {

        if (params['page'] != undefined && this.filters && !firstLoad && this.searchUtils.page != +params['page']) {

          refine = false;

        }

        if (params['size'] != undefined && this.filters && !firstLoad && this.searchUtils.size != params['size']) {

          refine = false;

        }

      }

      let page = (params['page']=== undefined)?0:+params['page'];

      this.searchUtils.page = ( page < 1 ) ? 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.searchPage.fieldIds = this.fieldIds;

      this.selectedFields =[];

      if(this.type == "deposit"){

        this.searchPage.keywordFields = this.searchFields.DEPOSIT_DATASOURCE_KEYWORD_FIELDS;

        this.searchPage.usedBy = "deposit";

      }

      // console.log(this.refineFields)

      this.searchPage.prepareSearchPage(this.fieldIds, this.selectedFields, this.refineFields, [], this.fieldIdsMap,this.customFilter,params, "dataprovider");

      if(refine && (this.type == "all" || this.type == "deposit")) {

        this._getFilters(this.searchPage.getSearchAPIQueryForAdvancedSearhFields(), this.searchUtils.page, 0, true, this.searchPage.getSearchAPIQueryForRefineFields(params, firstLoad));

      } else if(refine) { // static filters

        this.searchUtils.refineStatus = this.errorCodes.LOADING;

        this.filters = DatasourcesHelperClass.createFilters(this.type);

      } else {

        this.searchUtils.refineStatus = this.errorCodes.DONE;

      }

      this.getResults(this.searchPage.getSearchAPIQueryForAdvancedSearhFields(),  this.searchUtils.page, this.searchUtils.size, refine, this.searchPage.getSearchAPIQueryForRefineFields(params, firstLoad));

      firstLoad = false;

    }));

  }

  ngOnDestroy() {

    if(this.searchResultsSub) {

      this.searchResultsSub.unsubscribe();

    }

    if(this.searchFiltersSub) {

      this.searchFiltersSub.unsubscribe();

    }

    for (let sub of this.subs) {

      sub.unsubscribe();

    }

  }

  public _getFilters(parameters:string, page: number, size: number, refine: boolean, refineFieldsFilterQuery = null){

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

      this.searchUtils.refineStatus = this.errorCodes.LOADING;

      this.disableRefineForms = true;

      this.searchPageUpdates.emit({disableForms: this.disableForms, disableRefineForms: this.disableRefineForms, searchUtils: this.searchUtils});

      let datasourceQueryPrefix = DatasourcesHelperClass.getQueryPrefix(this.type);

      this.searchFiltersSub = this._searchDataProvidersService.advancedSearchDataproviders( datasourceQueryPrefix +(datasourceQueryPrefix.length > 0 && parameters.length > 0 ?' and (':'') + parameters +(datasourceQueryPrefix.length > 0 && parameters.length > 0 ?' ) ':''),  page, size, this.properties, (refine && (this.type=="all" || this.type == "deposit")) ? this.searchPage.getRefineFieldsQuery() : null, this.searchPage.getFields(), refineFieldsFilterQuery, (this.type == "deposit"))

      //.switchMap(

        .subscribe(

          data => {

            let totalResults = data[0];

            let filters = data[2];

            this.filtersReturned(refine, filters, totalResults, page);

          },

          err => {

            this.filters = this.searchPage.prepareFiltersToShow([], 0);

            this.handleError("Error getting refine filters for content providers: ", err);

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

            this.disableRefineForms = false;

            this.searchPageUpdates.emit({disableForms: this.disableForms, disableRefineForms: this.disableRefineForms, searchUtils: this.searchUtils})

          }

        );

    }

  }

  public filtersReturned(refine: boolean, filters: Filter[], totalResults, page: number) {

    if (refine) {

      this.filters = this.searchPage.prepareFiltersToShow(filters, totalResults);

    }

    this.searchUtils.refineStatus = this.errorCodes.DONE;

    if(totalResults == 0) {

      this.searchUtils.refineStatus = this.errorCodes.NONE;

    }

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

      // Page out of limit!!!

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

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

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

      }

      if (totalPages < page) {

        this.searchUtils.refineStatus = this.errorCodes.OUT_OF_BOUND;

      }

    }

    if(this.searchUtils.refineStatus != this.errorCodes.DONE && this.searchUtils.status != this.searchUtils.refineStatus) {

      if (this.searchResultsSub) {

        this.searchResultsSub.unsubscribe();

      }

      this.resultsReturned(refine, [], totalResults, page);

    }

    this.disableRefineForms = false;

    this.searchPageUpdates.emit({disableForms: this.disableForms, disableRefineForms: this.disableRefineForms, searchUtils: this.searchUtils})

  }

  public getResults(parameters:string, page: number, size: number, refine: boolean, refineFieldsFilterQuery = null){

    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;

      // }

      // this.csvParams += (refineFieldsFilterQuery?refineFieldsFilterQuery:'');

      this.csvParams = (parameters ? ("&fq=("+parameters) : "") + (parameters ? ")" : "");

      this.csvParams += (refineFieldsFilterQuery ? refineFieldsFilterQuery : "");

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

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

      //this.searchPage.openLoading();

      this.disableForms = true;

      this.searchPageUpdates.emit({disableForms: this.disableForms, disableRefineForms: this.disableRefineForms, searchUtils: this.searchUtils});

      this.results = [];

      this.searchUtils.totalResults = 0;

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

      let datasourceQueryPrefix = DatasourcesHelperClass.getQueryPrefix(this.type);

      //this._searchDataProvidersService.advancedSearchDataproviders( datasourceQueryPrefix +(datasourceQueryPrefix.length > 0 && parameters.length > 0 ?' and (':'') + parameters +(datasourceQueryPrefix.length > 0 && parameters.length > 0 ?' ) ':''),  page, size, this.properties, (refine && (this.type=="all" || this.type == "deposit")) ? this.searchPage.getRefineFieldsQuery() : null, this.searchPage.getFields(), refineFieldsFilterQuery, (this.type == "deposit")).subscribe(

      this.searchResultsSub = this._searchDataProvidersService.advancedSearchDataproviders( datasourceQueryPrefix +(datasourceQueryPrefix.length > 0 && parameters.length > 0 ?' and (':'') + parameters +(datasourceQueryPrefix.length > 0 && parameters.length > 0 ?' ) ':''),  page, size, this.properties, null, this.searchPage.getFields(), refineFieldsFilterQuery, (this.type == "deposit")).subscribe(

        data => {

          let totalResults = data[0];

          let results = data[1];

          if(refine && !(this.type == "all" || this.type == "deposit")){

            this.filtersReturned(refine, this.filters, totalResults, page);

          }

          this.resultsReturned(refine, results, totalResults, page);

          },

          err => {

              //console.log(err);

              this.handleError("Error getting content providers", 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;

            this.searchPageUpdates.emit({disableForms: this.disableForms, disableRefineForms: this.disableRefineForms, searchUtils: this.searchUtils});

            this.searchPage.hideFilters = false;

          }

        );

      }

  }

  public resultsReturned(refine: boolean, results: any, totalResults, page: number) {

    this.searchUtils.totalResults = totalResults;

    this.results = results;

    if(!refine) {

      this.searchPage.buildPageURLParameters(this.filters, [], false);

    }

    this.searchPage.hideFilters = false;

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

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

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

    }

    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;

      }

    }

    if(this.searchUtils.status != this.errorCodes.DONE && this.searchUtils.refineStatus != this.searchUtils.status) {

      if(this.searchFiltersSub) {

        this.searchFiltersSub.unsubscribe();

      }

      this.filtersReturned(refine, [], totalResults, page);

    }

    this.disableForms = false;

    this.searchPageUpdates.emit({disableForms: this.disableForms, disableRefineForms: this.disableRefineForms, searchUtils: this.searchUtils});

  }

  private handleError(message: string, error) {

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

  }

}