D-Net

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

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

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

import {SearchResearchResultsService} from '../services/searchResearchResults.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 {RangeFilter} from "../utils/rangeFilter/rangeFilterHelperClasses.class";

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

import {ContextsService} from "../claims/claim-utils/service/contexts.service";

@Component({

  selector: 'search-research-results',

  template: `

    <new-search-page

        pageTitle="{{(simpleView?'':'Advanced ')}} Search for {{ getEntityName(resultType, true, true) | titlecase }}"

        [entityType]="resultType"

        [type]="getEntityName(resultType, true, true)"

        [results]="results"

        [searchUtils]="searchUtils"

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

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

        [csvParams]="csvParams" [csvPath]="getEntityName(resultType, true, false)"

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

        [disableForms]="disableForms"

        [disableRefineForms]="disableRefineForms"

        [loadPaging]="loadPaging"

        [oldTotalResults]="oldTotalResults"

        [openaireLink]=openaireLink

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

        searchFormClass="publicationsSearchForm"

        [filters]="filters" [quickFilter]="quickFilter"

        [rangeFilters]="rangeFilters" [rangeFields]="rangeFields"

        [simpleView]="simpleView" formPlaceholderText="Search by title, author, abstract, DOI, orcid..."

        [includeOnlyResultsAndFilter]="includeOnlyResultsAndFilter" [showBreadcrumb]="showBreadcrumb"

        [showSwitchSearchLink]="showSwitchSearchLink"

        [stickyForm]="stickyForm"

    >

    </new-search-page>

  `

})

export class SearchResearchResultsComponent {

  @Input() resultType: string = "result";

  @Input() simpleSearchLink: string = "";

  advancedSearchLink: string = "";

  private errorCodes: ErrorCodes;

  private errorMessages: ErrorMessagesComponent;

  @Input() piwikSiteId = properties.piwikSiteId;

  @Input() hasPrefix: boolean = true;

  public results = [];

  public filters = [];

  public rangeFilters: RangeFilter[] = [];

  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 rangeFields: string[][] = this.searchFields.RESULT_RANGE_FIELDS;

  public selectedFields: AdvancedField[] = [];

  public resourcesQuery = "((oaftype exact result) and (resulttypeid exact " + this.resultType + "))";

  public csvParams: string;

  public disableForms: boolean = false;

  public disableRefineForms: boolean = false;

  public loadPaging: boolean = true;

  public oldTotalResults: number = 0;

  @Input() openaireLink: string;

  @Input() customFilter: SearchCustomFilter = null;

  public pagingLimit: number = 0;

  public isPiwikEnabled;

  properties: EnvProperties = properties;

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

  @ViewChild(NewSearchPageComponent) searchPage: NewSearchPageComponent;

  @Input() simpleView: boolean = true;

  quickFilter: { filter: Filter, selected: boolean, filterId: string, value: string } = {

    filter: null,

    selected: true,

    filterId: "resultbestaccessright",

    value: "Open Access"

  };

  @Input() includeOnlyResultsAndFilter: boolean = false;

  @Input() showBreadcrumb: boolean = false;

  @Output() searchPageUpdates = new EventEmitter();

  @Input() showSwitchSearchLink: boolean = true;

  subs: any[] = [];

  searchResultsSub: any;

  searchFiltersSub: any;

  @Input() stickyForm:boolean = false;

  private timeoutId;

  private promise: Promise<boolean> = null;

  private publicCommunities = null;

  constructor(private route: ActivatedRoute, private _searchResearchResultsService: SearchResearchResultsService,

              private _contextService: ContextsService) {

    this.results = [];

    this.errorCodes = new ErrorCodes();

    this.errorMessages = new ErrorMessagesComponent();

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

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

    this.getPublicCommunities();

  }

  ngOnInit() {

    //TODO add checks about which result types are enabled!

    this.pagingLimit = this.properties.pagingLimit;

    this.isPiwikEnabled = this.properties.enablePiwikTrack;

    if (!this.simpleSearchLink) {

      this.simpleSearchLink = this.properties.searchLinkToResults;

    }

    this.advancedSearchLink = this.properties.searchLinkToAdvancedResults;

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

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

    var firstLoad = true;

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

    //this.subs.push(this.route.queryParams.switchMap(params => {

      this.loadPaging = true;

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

        this.loadPaging = false;

        this.oldTotalResults = this.searchUtils.totalResults;

      }

      var refine = true;

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

        refine = false;

      }

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

        refine = false;

      }

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

        refine = false;

      }

      let page = (params['page'] === undefined) ? 1 : +params['page'];

      this.searchUtils.page = (page <= 0) ? 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.searchUtils.sortBy = (params['sortBy']) ? params['sortBy'] : '';

      if (this.searchUtils.sortBy && this.searchUtils.sortBy != "resultdateofacceptance,descending" && this.searchUtils.sortBy != "resultdateofacceptance,ascending") {

        this.searchUtils.sortBy = "";

      }

      this.selectedFields = [];

      this.searchPage.prepareSearchPage(this.fieldIds, this.selectedFields, this.refineFields, this.rangeFields, this.fieldIdsMap,this.customFilter,params, this.resultType, this.quickFilter);

      if(refine) {

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

      } else {

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

      }

      this._getResults(this.searchPage.getSearchAPIQueryForAdvancedSearhFields(), this.searchUtils.page, this.searchUtils.size, this.searchUtils.sortBy, refine, this.searchPage.getSearchAPIQueryForRangeFields(params) + 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 getPublicCommunities() {

    this.promise = new Promise<any>(resolve => {

      this._contextService.getPublicCommunitiesByState().subscribe(

        data => {

          if(this.publicCommunities == null) {

            this.publicCommunities = data.map(value => value.id);

          }

          resolve();

        },

        error => {

          this.handleError("Error getting communities status", error);

          resolve();

        });

    });

  }

  racePromiseWithTimeout() {

    const timeoutPromise = new Promise((_, reject) => {

      this.timeoutId = setTimeout(() => {

        this.publicCommunities = [];

        reject(new Error('Request timed out'));

      }, 300);

    });

    return Promise.race([this.promise, timeoutPromise]);

  }

  public _getFilters(parameters: string, page: number, size: number, sortBy: string, 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});

        this.searchFiltersSub = this._searchResearchResultsService.advancedSearchResults(this.resultType, parameters, page, size, sortBy, this.properties, (refine) ? this.searchPage.getRefineFieldsQuery() : null, this.searchPage.getFields(), refineFieldsFilterQuery)

        // this.subs.push(this._searchResearchResultsService.advancedSearchResults(this.resultType, parameters, page, size, sortBy, this.properties, (refine) ? this.searchPage.getRefineFieldsQuery() : null, this.searchPage.getFields(), refineFieldsFilterQuery)

          //.switchMap(

          .subscribe(

            data => {

              let totalResults = data[0];

              let filters = data[2];

              // if (refine) {

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

              //   this.rangeFilters = this.searchPage.prepareRangeFiltersToShow();

              // }

              //

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

              //

              // this.disableRefineForms = false;

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

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

            },

            err => {

              this.handleError("Error getting " + this.getEntityName(this.resultType, true, true), 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 async filtersReturned(refine: boolean, filters: Filter[], totalResults, page: number) {

      if(!this.timeoutId) {

        try {

          await this.racePromiseWithTimeout();

        } catch (error) {

          this.handleError("Getting communities status was over 300ms - timeout", error);

        } finally {

          clearTimeout(this.timeoutId);

        }

      }

      let communitiesFilter = filters.find(filters => filters.filterId == "community");

      if(communitiesFilter && this.publicCommunities && this.publicCommunities.length > 0) {

        communitiesFilter.values = communitiesFilter.values.filter(value => {

          let valueId = "";

          if(value.id) {

            let idArray = value.id.split("||");

            if(idArray) {

              valueId = idArray[0];

            }

          }

          //for(let publicCom of this.publicCommunities) {

            //if(valueId && publicCom['id'] == valueId) {

          if(valueId && this.publicCommunities.includes(valueId)) {

              return true;

            //}

          }

        });

      }

      if (refine) {

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

        this.rangeFilters = this.searchPage.prepareRangeFiltersToShow();

      }

      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;

    }

  public _getResults(parameters: string, page: number, size: number, sortBy: string, 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 = (parameters ? ("&fq=(" + parameters) : "") + (parameters ? ")" : "");

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

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

      this.disableForms = true;

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

      this.results = [];

      this.searchUtils.totalResults = 0;

      //this.subs.push(this._searchResearchResultsService.advancedSearchResults(this.resultType, parameters, page, size, sortBy, this.properties, (refine) ? this.searchPage.getRefineFieldsQuery() : null, this.searchPage.getFields(), refineFieldsFilterQuery)

      this.searchResultsSub = this._searchResearchResultsService.advancedSearchResults(this.resultType, parameters, page, size, sortBy, this.properties, null, this.searchPage.getFields(), refineFieldsFilterQuery)

      //this.subs.push(this._searchResearchResultsService.advancedSearchResults(this.resultType, parameters, page, size, sortBy, this.properties, null, this.searchPage.getFields(), refineFieldsFilterQuery)

        .subscribe(

        data => {

          let totalResults = data[0];

          let results = data[1];

          // this.searchUtils.totalResults = totalResults;

          // this.results = results;

          // // if (refine) {

          // //   this.filters = this.searchPage.prepareFiltersToShow(data[2],this.searchUtils.totalResults);

          // //   this.rangeFilters = this.searchPage.prepareRangeFiltersToShow();

          // // } else {

          // if(!refine) {

          //   this.searchPage.buildPageURLParameters(this.filters, this.rangeFilters, false);

          // }

          //

          // this.searchPage.hideFilters = false;

          //

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

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

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

          // }

          // this.disableForms = false;

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

        },

        err => {

          this.handleError("Error getting " + this.getEntityName(this.resultType, true, true), 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, this.rangeFilters, 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(this.getEntityName(this.resultType, true, true) + " advanced Search Page: " + message, error);

  }

  public getEntityName(entityType: string, plural: boolean, full: boolean): string {

    if (entityType == "publication") {

      return "publication" + (plural ? "s" : "");

    } else if (entityType == "dataset") {

      return (full ? "research data" : ("dataset" + (plural ? "s" : "")));

    } else if (entityType == "software") {

      return "software";

    } else if (entityType == "other") {

      return (full ? ("other research product" + (plural ? "s" : "")) : "other");

    } else if (entityType == "result") {

      return (full ? ("research outcome" + (plural ? "s" : "")) : "result");

    }

  }

}