D-Net

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

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

import {EventEmitter}      from '@angular/core';

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

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

import {Title, Meta}                  from '@angular/platform-browser';

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

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

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

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

import {RouterHelper}                 from '../../utils/routerHelper.class';

import {ModalLoading}                 from '../../utils/modal/loading.component';

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

import {PiwikService}                 from '../../utils/piwik/piwik.service';

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

import { SEOService }                 from '../../sharedComponents/SEO/SEO.service';

import {HelperFunctions} from "../../utils/HelperFunctions.class";

import {ZenodoInformationClass} from "../../deposit/utils/zenodoInformation.class";

import {HelperService} from "../../utils/helper/helper.service";

@Component({

    selector: 'search-page',

    templateUrl: 'searchPage.component.html'

})

export class SearchPageComponent {

  @Input() piwikSiteId = null;

  @Input() pageTitle = "";

  @Input() formPlaceholderText = "Type Keywords...";

  @Input() results = [];

  @Input() filters = [];

  @Input() type:string = "";

  @Input() entityType: string = "";

  @Input() usedBy: string = "search";

  @Input() showMoreFilterValuesInline: boolean = false;

  @Input() filterValuesNum: number = 5;

  @Input() public zenodoInformation: ZenodoInformationClass = new ZenodoInformationClass();

  @Input() searchUtils:SearchUtilsClass = new SearchUtilsClass();

  @Output() queryChange  = new EventEmitter();

  @Input() baseUrl:string = '';

  @Input() showResultCount:boolean = true;

  @Input() showRefine:boolean = true;

  @Input() refineFields = [];

  @Input() csvParams: string;

  @Input() csvPath: string;

  @Input() advancedSearchLink: string = "";

  @Input() advancedSearchParameters;

  @Input() tableViewLink: string;

  @Input() disableForms: boolean = false;

  @Input() loadPaging: boolean = true;

  @Input() oldTotalResults: number = 0;

  @Input() tableView: boolean = false;

  @Input() searchFormClass: string = "searchForm";

  @Input() openaireLink: string;

  @Input() customFilter:SearchCustomFilter= null;

  @Input() sort: boolean = false;

  @Input() mapUrl: string = "";

  @Input() mapTooltipType: string ="content providers";

  @Input() newQueryButton: boolean = true;

  @Input() lastIndex: boolean = true;

  @Input() hasPrefix: boolean = true;

  //@Input() sortBy: string = "";

  @ViewChild (ModalLoading) loading : ModalLoading ;

  public fieldIdsMap;//:  { [key:string]:{ name:string, operator:string, type:string, indexField:string, equalityOperator:string  }};

  @Input() keywordFields = [];

  private searchFieldsHelper:SearchFields = new SearchFields();

  private queryParameters: Map<string, string>  = new Map<string,string>();

  private baseURLWithParameters:string = '';

  private sub: any; piwiksub: any;

  // public countFilters= 0;

  public parameterNames:string[] =[];

  public parameterValues:string[] =[];

  public showUnknownFilters:boolean = false; // when a filter exists in query but has no results, so no filters returned from the query

  //@ViewChild (SearchFilterModalComponent) searchFilterModal : SearchFilterModalComponent ;

  // public currentFilter: Filter;

  public csvLimit: number = 0;

  public pagingLimit: number = 0;

  public resultsPerPage: number = 10;

  public isPiwikEnabled;

  public pageContents = null;

  public divContents = null;

  properties:EnvProperties;

  public routerHelper:RouterHelper = new RouterHelper();

  public errorCodes:ErrorCodes = new ErrorCodes();

  constructor (private route: ActivatedRoute,

               private location: Location,

               private _meta: Meta,

               private _title: Title,

               private _piwikService:PiwikService,

               private router: Router,

               private seoService: SEOService,

               private helper: HelperService) {

   }

  ngOnInit() {

    this.route.data

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

        this.properties = data.envSpecific;

        //this.getDivContents();

        this.getPageContents();

        this.pagingLimit = data.envSpecific.pagingLimit;

        HelperFunctions.scroll();

        this.csvLimit = data.envSpecific.csvLimit;

        this.isPiwikEnabled = data.envSpecific.enablePiwikTrack;

        if(typeof window !== 'undefined') {

          this.updateUrl(data.envSpecific.baseLink+location.pathname);

        }

        if(typeof document !== 'undefined' && this.isPiwikEnabled){

          this.piwiksub = this._piwikService.trackView(this.properties, this.pageTitle, this.piwikSiteId).subscribe();

        }

      });

        // this.updateBaseUrlWithParameters(this.filters);

        this.updateTitle(this.pageTitle);

        var description = "Openaire, search, repositories, open access, type, content provider, funder, project, " + this.type + "," +this.pageTitle;

        this.updateDescription(description);

        this.seoService.createLinkForCanonicalURL(this.properties.baseLink+this.router.url,false);

  }

  private getPageContents() {

    this.helper.getPageHelpContents(this.router.url, this.properties, (this.customFilter)?this.customFilter.valueId:null).subscribe(contents => {

      this.pageContents = contents;

    })

  }

  private getDivContents() {

    this.helper.getDivHelpContents(this.router.url, this.properties, (this.customFilter)?this.customFilter.valueId:null).subscribe(contents => {

      this.divContents = contents;

    })

  }

  ngOnDestroy() {

    if(this.piwiksub){

      this.piwiksub.unsubscribe();

    }

  }

  updateDescription(description:string) {

    this._meta.updateTag({content:description},"name='description'");

    this._meta.updateTag({content:description},"property='og:description'");

  }

  updateTitle(title:string) {

    let _title: string;

    if(this.hasPrefix) {

      let _prefix ="OpenAIRE | ";

      _title = _prefix + ((title.length > 50) ? title.substring(0, 50) : title);

    } else {

      _title = ((title.length > 50) ? title.substring(0, 50) : title);

    }

    this._title.setTitle(_title);

    this._meta.updateTag({content:_title},"property='og:title'");

  }

  updateUrl(url:string) {

    this._meta.updateTag({content:url},"property='og:url'");

  }

  public getQueryParamsFromUrl(params) {

    this.queryParameters = new Map<string,string>();

    for(let i=0; i< this.refineFields.length ; i++) {

      let filterId = this.refineFields[i];

      if (params[filterId] != undefined) {

        this.queryParameters.set(filterId, StringUtils.URIDecode(params[filterId]));

      }

    }

    return this.queryParameters;

  }

  public getQueryParametersFromUrl(params){ // called by ngOnInit function of search find pages

    // var parameters = "";

    var allFqs = "";

    this.queryParameters = new Map<string,string>();

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

         var filterId =  this.refineFields[i];

          if(params[filterId] != undefined) {

             this.queryParameters.set(filterId, StringUtils.URIDecode(params[filterId]));

             let values = (StringUtils.URIDecode(this.queryParameters.get(filterId))).split(/,(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)/,-1);

             var countvalues = 0;

             var fq = "";

             for(let value of values) {

               countvalues++;

               var paramId = this.fieldIdsMap[filterId].param;

              // parameters+='&' + paramId+ '='+ value;//+"&" + this.fieldIdsMap[paramId].operator + "="+((countvalues == 1)?"and":"or");

              fq+=(fq.length > 0 ? " " + "or" + " ":"" ) + filterId +" exact " +(value);

             }

             if(countvalues > 0){

               fq="&fq="+StringUtils.URIEncode(fq);

             }

             allFqs += fq;

          }

   }

    if(this.customFilter){

      allFqs+= "&fq="+StringUtils.URIEncode(this.customFilter.queryFieldName + " exact " + StringUtils.quote((this.customFilter.valueId )));

    }

   var keyword = params['keyword'];

   var doiQuery = "";

   var keywordQuery = "";

   if((keyword && keyword.length > 0)){

      if((this.type == 'publications' ||this.type == 'research data' || this.type == 'software' || this.type == 'other research products')){

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

       var doisParams = "";

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

         doisParams+=(doisParams.length > 0?"&":"")+'doi="'+ DOIs[i]+'"';

       }

       if(doisParams.length > 0){

         doiQuery += "&"+doisParams;

       }else {

        keywordQuery += "&q="+StringUtils.URIEncode(keyword);

       }

     }else{

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

          if(this.keywordFields.length > 0) {

            keywordQuery = "&fq=";

          }

          for(let i=0; i< this.keywordFields.length ; i++) {

            if(i > 0) {

              keywordQuery += " or ";

            }

            let field = this.keywordFields[i];

            keywordQuery += field.name+field.equalityOperator+StringUtils.URIEncode(keyword);

          }

        } else {

          keywordQuery += "&q=" + StringUtils.URIEncode(keyword);

        }

     }

   }

   return (doiQuery.length > 0 ? doiQuery:keywordQuery) + allFqs;

 }

 public getIndexQueryParametersFromUrl(params){  // called by ngOnInit function of search pages that request 'resources'

  //  var parameters = "";

   var allFqs = "";

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

        var filterId =  this.refineFields[i];

        var fq = "";

         if(params[filterId] != undefined) {

            this.queryParameters.set(filterId,decodeURIComponent(params[filterId]));

            let values = (decodeURIComponent(this.queryParameters.get(filterId))).split(/,(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)/,-1);

            var countvalues = 0

            for(let value of values) {

              countvalues++;

              // parameters+= ((countvalues == 1)?" and (":" or ")+ filterId+ '='+ value;

              fq+=(fq.length > 0 ? " " + "or" + " ":"" ) + filterId + " exact " + value;//StringUtils.quote(value);

            }

            // parameters+= " ) ";

            if(countvalues > 0){

              fq="&fq="+StringUtils.URIEncode(fq);

            }

            allFqs += fq;

        }

  }

  var keyword = params['keyword'];

  var doiQuery = "";

  var keywordQuery = "";

  if((keyword && keyword.length > 0)){

    if((this.type == 'publications' ||this.type == 'research data' || this.type == 'software' || this.type == 'other research products')){

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

      var doisParams = "";

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

        doisParams+=(doisParams.length > 0?"&":"")+'doi="'+ DOIs[i]+'"';

      }

      if(doisParams.length > 0){

        doiQuery += "&"+doisParams;

      }

    }else{

       keywordQuery += "and ("+StringUtils.quote(StringUtils.URIEncode(keyword)) +")";

    }

  }

  return (doiQuery.length > 0 ? doiQuery:keywordQuery) + allFqs;

}

 /*

 * Mark as check the new filters that are selected, when you get them from search

 */

  public checkSelectedFilters(filters:Filter[]){

    this.filters = filters;

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

            var filter:Filter = filters[i];

            filter.countSelectedValues = 0;

              if(this.queryParameters.get(filter.filterId) != undefined) {

                let values = (decodeURIComponent(this.queryParameters.get(filter.filterId))).split(/,(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)/,-1);

                     for(let filterValue of filter.values) {

                       if(values.indexOf(StringUtils.quote(filterValue.id)) > -1) {

                            filterValue.selected = true;

                            filter.countSelectedValues++;

                         }else{

                           filterValue.selected = false;

                         }

                    }

            }else{

              for(let filterValue of filter.values) {

                 filterValue.selected = false;

              }

            }

        }

        this.filterFilterValues(this.filters);

        return filters;

  }

  /*

  * For Funder filters - if funder selected

  */

   public filterFilterValues(filters:Filter[]){

     var funders = [];

     var funder_prefix = [];

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

             var filter:Filter = filters[i];

            //  console.log(filter.filterId);

             if(filter.filterId.indexOf("funder")!=-1 && this.queryParameters.get(filter.filterId) != undefined) {

                 let funders = (decodeURIComponent(this.queryParameters.get(filter.filterId))).split(/,(?=(?:[^\"]*\"[^\"]*\")*[^\"]*$)/,-1);

                      for(let funder of funders) {

                        funder_prefix.push(StringUtils.unquote(funder).split("____")[0]);

                     }

                    //  console.log(funder_prefix );

             }else if(filter.filterId.indexOf("funding")!=-1){

              //  console.log(" funding: "+filter.filterId );

               var filteredValues = []

               for(let filterValue of filter.values) {

                 var value_prefix = filterValue.id.split("____")[0];

                //  console.log("Value prefix: "+value_prefix );

                 if(funder_prefix.indexOf(value_prefix)!=-1){

                  //  console.log("here" + value_prefix);

                   filteredValues.push(filterValue);

                 }

               }

               if(filteredValues.length > 0){

                 filter.values = filteredValues;

               }

             }

       }

         return filters;

   }

  /*

  * Update the url with proper parameters. This is used as base url in Paging Component

  */

  public updateBaseUrlWithParameters(filters:Filter[]){

    this.baseURLWithParameters = this.baseUrl + this.createUrlParameters(filters,false);

  }

  /*

  *Get The filters and create url parameters

  */

  private createUrlParameters(filters:Filter[], includePage:boolean){

    var allLimits="";//location.search.slice(1);

    this.queryParameters = new Map<string,string>();

    this.parameterNames.splice(0,this.parameterNames.length);

    this.parameterValues.splice(0,this.parameterValues.length);

    for (let filter of filters){

      var filterLimits="";

      if(filter.countSelectedValues > 0 ){

        for (let value of filter.values){

          if(value.selected == true){

            filterLimits+=((filterLimits.length == 0)?'':',') +'"'+ (value.id)+'"';

          }

        }

        this.queryParameters.set(filter.filterId,filterLimits);

        if(filterLimits.length > 0){

          this.parameterNames.push(filter.filterId);

          this.parameterValues.push(filterLimits);

        }

        allLimits+=(allLimits.length==0?"?":"&")+((filterLimits.length == 0 )?'':filter.filterId + '='+ filterLimits) ;

      }

    }

    if(this.searchUtils.keyword.length > 0 ){

       allLimits+=(allLimits.length==0?"?":"&")+'keyword=' + this.searchUtils.keyword;

      this.parameterNames.push("keyword");

      this.parameterValues.push(this.searchUtils.keyword);

     }

    if(this.searchUtils.page != 1 && includePage){

       allLimits+=((allLimits.length == 0)?'?':'&') + 'page=' + this.searchUtils.page;

    }

    if(this.searchUtils.size != this.resultsPerPage) {

      allLimits+=((allLimits.length == 0)?'?':'&') + 'size=' + this.searchUtils.size;

      this.parameterNames.push("size");

      this.parameterValues.push(""+this.searchUtils.size);

    }

    if(this.sort && this.searchUtils.sortBy) {

      allLimits+=((allLimits.length == 0)?'?':'&') + 'sortBy=' + this.searchUtils.sortBy;

      this.parameterNames.push("sortBy");

      this.parameterValues.push(this.searchUtils.sortBy);

    } /*else {

      let index: number = this.parameterNames.findIndex(function(element) {

        return element == "sortBy";

      });

      console.info("index of sortby: "+index);

      if(index >= 0) {

        console.info("------remove sortBy------");

        this.parameterNames.splice(index, 1);

        this.parameterValues.splice(index, 1);

      }

    }*/

    return allLimits;

  }

  /*

  *

  */

  private createSearchQueryParameters(filters:Filter[]){   // called by goTo, result emited to and used by search find pages

    var allFqs = "";

    for (let filter of filters){

      if(filter.countSelectedValues > 0 ){

        var fq = "";

        var count_selected=0;

        for (let value of filter.values){

          if(value.selected == true){

              count_selected++;

              fq+=(fq.length > 0 ? " " + filter.filterOperator + " ":"" ) + filter.filterId +  " exact " + StringUtils.quote((value.id));

           }

        }

        fq="&fq="+StringUtils.URIEncode(fq);

        allFqs += fq;

      }

    }

    var doiQuery = "";

    var keywordQuery = "";

    if((this.searchUtils.keyword && this.searchUtils.keyword.length > 0)){

      if((this.type == 'publications' ||this.type == 'research data' || this.type == 'software' || this.type == 'other research products')){

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

        var doisParams = "";

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

          doisParams+=(doisParams.length > 0?"&":"")+'doi="'+ DOIs[i]+'"';

        }

        if(doisParams.length > 0){

          doiQuery += "&"+doisParams;

        }else{

          keywordQuery += "&q="+StringUtils.URIEncode(this.searchUtils.keyword);

        }

      }else{

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

          if(this.keywordFields.length > 0) {

            keywordQuery = "&fq=";

          }

          for(let i=0; i< this.keywordFields.length ; i++) {

            if(i > 0) {

              keywordQuery += " or ";

            }

            let field = this.keywordFields[i];

            keywordQuery += field.name+field.equalityOperator+StringUtils.URIEncode(this.searchUtils.keyword);

          }

        } else {

          keywordQuery += "&q=" + StringUtils.URIEncode(this.searchUtils.keyword);

        }

      }

    }

    return (doiQuery.length > 0 ? doiQuery:keywordQuery) + allFqs;

  }

  private createIndexQueryParameters(filters:Filter[]){   // called by goTo, result emited to and used by search pages that request 'resources'

    var allFqs = "";

    for (let filter of filters){

      if(filter.countSelectedValues > 0){

        var count_selected=0;

        var fq = "";

        for (let value of filter.values){

          if(value.selected == true){

              count_selected++;

               fq+=(fq.length > 0 ? " " + filter.filterOperator + " ":"" ) + filter.filterId + " exact " + (StringUtils.quote(value.id));

           }

        }

        if(count_selected > 0){

          fq="&fq="+StringUtils.URIEncode(fq);

          allFqs += fq;

        }

      }

    }

    var doiQuery = "";

    var keywordQuery = "";

    if((this.searchUtils.keyword && this.searchUtils.keyword.length > 0)){

      if((this.type == 'publications' ||this.type == 'research data' || this.type == 'software' || this.type == 'other research products')){

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

        var doisParams = "";

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

          doisParams+=(doisParams.length > 0?"&":"")+'doi="'+ DOIs[i]+'"';

        }

        if(doisParams.length > 0){

          doiQuery += "&"+doisParams;

        }

      }else{

         keywordQuery += " and ("+StringUtils.quote(StringUtils.URIEncode(this.searchUtils.keyword)) +")"

      }

    }

    return (doiQuery.length > 0 ? doiQuery:keywordQuery) + allFqs;

  }

  public countFilters():number{

    var filters=0;

    this.showUnknownFilters = false;

    for (let filter of this.filters){

       if(filter.countSelectedValues > 0){

           filters+=filter.countSelectedValues;

       }

     }

    if(this.searchUtils.keyword.length > 0 ){

      filters++;

    }

    var errorCodes:ErrorCodes = new ErrorCodes();

    if(this.queryParameters.keys() && this.searchUtils.totalResults == 0 && this.searchUtils.status !=errorCodes.LOADING ){

      if(this.newQueryButton) {

        this.showUnknownFilters = true;

      }

    }

    return filters;

  }

  private clearKeywords(){

    if(this.searchUtils.keyword.length > 0 ){

      this.searchUtils.keyword ='';

    }

    this.goTo(1);

  }

  private clearFilters(){

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

         for (var j=0; j <  this.filters[i].countSelectedValues; j++){

          if(this.filters[i].values[j].selected){

            this.filters[i].values[j].selected = false;

           }

        this.filters[i].countSelectedValues = 0;

      }

    }

    this.clearKeywords();

  }

  private removeFilter(value:Value,filter:Filter){

    filter.countSelectedValues--;

    if(value.selected == true){

      value.selected = false;

     }

    this.goTo(1);

  }

  goTo(page:number = 1){

    this.searchUtils.page = page;

    var urlParameters = this.createUrlParameters(this.filters,true);

    //console.info("urlParams : "+urlParameters);

    this.updateBaseUrlWithParameters(this.filters);

    var queryParameters = this.createSearchQueryParameters(this.filters);

    //console.info("queryParams : "+queryParameters);

    var indexQuery = this.createIndexQueryParameters(this.filters);

    //this.location.go(location.pathname,urlParameters);

    this.router.navigate( [this.baseUrl], { queryParams: this.routerHelper.createQueryParams(this.parameterNames, this.parameterValues) } );

/* Code For Piwik*/

    if (typeof localStorage !== 'undefined') {

      localStorage.setItem('previousRoute', this.router.url);

    }

    if(this.isPiwikEnabled && (typeof document !== 'undefined')){

      this.piwiksub = this._piwikService.trackView(this.properties, this.pageTitle, this.piwikSiteId).subscribe();

    }

    /* End Piwik Code */

    this.queryChange.emit({

        value: queryParameters,

        index:indexQuery,

        params: this.queryParameters

    });

    HelperFunctions.scroll();

  }

  filterChanged($event){

       this.goTo(1);

  }

  keywordChanged($event) {

       this.searchUtils.keyword = $event.value;

       this.goTo(1);

  }

  sizeChanged($event) {

       this.searchUtils.size = $event.value;

       this.goTo(1);

  }

  sortByChanged($event) {

       this.searchUtils.sortBy = $event.value;

       this.goTo(1);

  }

  /*

  * Get A sub-array of this.refineFields array, which contains the ids of the selected filters

  */

  public getSelectedFilters():string[] {

    var selected:string[] = [];

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

      var filter:Filter = this.filters[i];

      if(filter.countSelectedValues > 0){

          selected.push(filter.filterId);

      }

    }

    return selected;

  }

  /*

  * Get A sub-array of this.refineFields array, which contains the ids of the selected parameters

  */

  private getSelectedParameters():string[] {

    var selected:string[] = [];

    var params:string[] = Object.keys(this.queryParameters);

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

       if(this.queryParameters.get(this.refineFields[i])!= undefined ){

          selected.push(this.refineFields[i]);

      }

    }

    return selected;

  }

  /*

  * Get A sub-array of this.refineFields array, which hides hidden fields (e.g Funding level 0,1,2,..), and contains those that depend on another fields (e.g  Funding level 0 if Funder is selected )

  */

  public getFields():string[] {

    var selected_filters:string[] = this.getSelectedFilters();

    if(selected_filters.length == 0){

      selected_filters = this.getSelectedParameters();

    }

    var fields:string[] = [];

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

      var dependentTo = this.searchFieldsHelper.DEPENDENT_FIELDS[this.refineFields[i]];

      //if filter is not marked as hidden OR it is hidden but it is dependent to a field that it IS selected

      if(this.searchFieldsHelper.HIDDEN_FIELDS.indexOf(this.refineFields[i]) == -1 || (selected_filters.indexOf(dependentTo) != -1) || (selected_filters.indexOf(this.refineFields[i]) != -1) ){

          fields.push(this.refineFields[i]);

       }

    }

    return fields;

  }

  /*

  * Get a query  string of all fields, that want to get from search (e.g. &fields=funderid&fields=projectstartyear&...))

  */

  public getRefineFieldsQuery():string{

    var fields:string[] = this.getFields();

    var fieldsStr = ""

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

        fieldsStr+="&fields="+fields[i];

    }

    return "&refine=true"+fieldsStr;

  }