D-Net

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

import {Observable}       from 'rxjs/Observable';

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

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

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

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

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

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

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

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

import { Meta} from '../../../angular2-meta';

import{SearchFilterComponent} from './searchFilter.component';

import {SearchFilterModalComponent} from './searchFilterModal.component';

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

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

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

@Component({

    selector: 'search-page',

    templateUrl: 'searchPage.component.html'

})

export class SearchPageComponent {

  @Input() pageTitle = "";

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

  @Input() results = [];

  @Input() filters = [];

  @Input() type:string = "";

  @Input() entityType: string = "";

  @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() tableViewLink: string;

  @Input() disableForms: boolean = false;

  @Input() loadPaging: boolean = true;

  @Input() oldTotalResults: number = 0;

  @Input() tableView: boolean = false;

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

  @ViewChild (ModalLoading) loading : ModalLoading ;

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

  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;

  constructor (private location: Location , private _meta: Meta,private element: ElementRef,private _piwikService:PiwikService, private router: Router) {

   }

  ngOnInit() {

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

       this.element.nativeElement.scrollIntoView();

    }

        // this.updateBaseUrlWithParameters(this.filters);

        this.updateTitle(this.pageTitle);

        this.updateDescription("Openaire, search, repositories, open access, type, content provider, funder, project, " + this.type + "," +this.pageTitle);

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

          this.updateUrl(OpenaireProperties.getBaseLink()+location.pathname);

        }

        if(typeof document !== 'undefined' && OpenaireProperties.isPiwikTrackEnabled()){

          this.piwiksub = this._piwikService.trackView(this.pageTitle).subscribe();

        }

  }

  ngAfterViewChecked(){

  }

  ngOnDestroy() {

    if(this.piwiksub){

      this.piwiksub.unsubscribe();

    }

  }

  toggleModal($event) {

    this.currentFilter = $event.value;

    //this.searchFilterModal.open();

  }

  updateDescription(description:string){

    this._meta.updateMeta("description", description);

    this._meta.updateProperty("og:description", description);

  }

  updateTitle(title:string){

    var _prefix ="OpenAIRE | ";

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

    this._meta.setTitle(_title );

    this._meta.updateProperty("og:title",_title);

  }

  updateUrl(url:string){

    this._meta.updateProperty("og:url", url);

  }

  public getQueryParametersFromUrl(params){

    // 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 " +StringUtils.URIEncode(value);

             }

             if(countvalues > 0){

               fq="&fq="+fq;

             }

             allFqs += fq;

          }

   }

   var keyword = params['keyword'];

   var doiQuery = "";

   var keywordQuery = "";

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

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

        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{

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

     }

   }

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

 }

 public getIndexQueryParametersFromUrl(params){

  //  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="+fq;

            }

            allFqs += fq;

        }

  }

  var keyword = params['keyword'];

  var doiQuery = "";

  var keywordQuery = "";

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

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

      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) {

                        console.log(funder);

                        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);

                 }

               }

               console.log("From " +filter.values.length+ "to "+filteredValues.length);

               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)?'':',') +'"'+ StringUtils.URIEncode(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;

    }

    return allLimits;

  }

  /*

  *

  */

  private createSearchQueryParameters(filters:Filter[]){

    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(StringUtils.URIEncode(value.id));

           }

        }

        fq="&fq="+fq;

        allFqs += fq;

      }

    }

    var doiQuery = "";

    var keywordQuery = "";

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

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

        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{

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

      }

    }

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

  }

  private createIndexQueryParameters(filters:Filter[]){

    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(StringUtils.URIEncode(value.id));

           }

        }

        if(count_selected > 0){

          fq="&fq="+fq;

          allFqs += fq;

        }

      }

    }

    var doiQuery = "";

    var keywordQuery = "";

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

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

        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 isFiltered(){

    var filtered=false;

    this.showUnknownFilters = false;

    for (let filter of this.filters){

       if(filter.countSelectedValues > 0){

           filtered = true;

           break;

       }

     }

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

      filtered = true;

    }

    var errorCodes:ErrorCodes = new ErrorCodes();

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

      this.showUnknownFilters = true;

    }

    return filtered;

  }

  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;

    console.info("searchUtils.page goto = "+this.searchUtils.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);

/* Code For Piwik*/

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

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

    }

    if(OpenaireProperties.isPiwikTrackEnabled() && (typeof document !== 'undefined')){

      this.piwiksub = this._piwikService.trackView(this.pageTitle).subscribe();

    }

    /* End Piwik Code */

    this.queryChange.emit({

        value: queryParameters,

        index:indexQuery

    });

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

       this.element.nativeElement.scrollIntoView();

    }

  }

  filterChanged($event){

    console.info("filter Changed");

       this.goTo(1);

  }

  keywordChanged($event) {

       this.searchUtils.keyword = $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 <  params.length; i++){

       if(this.refineFields.indexOf(params[i]) > -1){

          selected.push(params[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;

  }

  // for loading

  public openLoading(){

    if(this.loading){

      this.loading.open();

    }

  }

  public closeLoading(){

    if(this.loading){

      this.loading.close();

    }

  }

  getSelectedValues(filter):any{

    var selected = [];

    if(filter.countSelectedValues >0){

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

        if(filter.values[i].selected){

          selected.push(filter.values[i]);

        }

      }

    }

    return selected;

  }

}