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


@Component({
    selector: 'search-dataproviders',
    template: `
 
    <new-search-page
      pageTitle="{{(simpleView?'':'Advanced ')}} Search for {{ pageTitle }}"
      entityType="dataprovider"
      type="content providers"
      [results]="results"
      [searchUtils]="searchUtils"
      [fieldIds]="fieldIds" [fieldIdsMap]="fieldIdsMap" [selectedFields]="selectedFields"
      [csvParams]="csvParams" csvPath="datasources"
      [simpleSearchLink]="simpleSearchLink" [advancedSearchLink]="advancedSearchLink"
      [disableForms]="disableForms"
      [loadPaging]="loadPaging"
      [oldTotalResults]="oldTotalResults"
      [openaireLink]=openaireLink
      [includeOnlyResultsAndFilter]="includeOnlyResultsAndFilter"
      [piwikSiteId]=piwikSiteId [hasPrefix]="hasPrefix"
      [searchFormClass]="type!='deposit'?'datasourcesSearchForm':''"
      [entitiesSelection]="type=='all'"  [showAdvancedSearchLink]="type=='all'" 
      [filters]="filters"
      [simpleView]="simpleView" formPlaceholderText="Search by name, description, subject..." 
      [showResultCount]="(type=='all' || type == 'deposit')" [showLastIndex]="type!='deposit'"
      [tableViewLink]="tableViewLink">
      
    </new-search-page>

    `
 })

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 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();
  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.route.data
      .subscribe((data: { envSpecific: EnvProperties }) => {
        this.properties= data.envSpecific;
        if (!this.simpleSearchLink) {
          this.simpleSearchLink = this.properties.searchLinkToDataProviders;
        }        this.advancedSearchLink = this.properties.searchLinkToAdvancedDataProviders;
        this.searchUtils.baseUrl = (this.simpleView)?this.simpleSearchLink:this.advancedSearchLink;
         this.pagingLimit = data.envSpecific.pagingLimit;
         this.isPiwikEnabled = data.envSpecific.enablePiwikTrack;

      });

    let firstLoad = true;
    this.filters = DatasourcesHelperClass.createFilters(this.type);
    this.sub =  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.searchUtils.page != ((params['page'] === undefined) ? 1 : +params['page']) && this.filters && !firstLoad) {
       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");
    this.getResults(this.searchPage.getSearchAPIQueryForAdvancedSearhFields(),  this.searchUtils.page, this.searchUtils.size, refine, this.searchPage.getSearchAPIQueryForRefineFields(params, firstLoad));
    });
  }
  ngOnDestroy() {
    this.sub.unsubscribe();
  }
  sub: any;
  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,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(
         data => {
            this.searchUtils.totalResults = data[0];
            this.results = data[1];
            //console.log(this.results);
           if (refine) {
             this.filters = this.searchPage.prepareFiltersToShow((this.type=="all" || this.type == "deposit")?data[2]:this.filters, this.searchUtils.totalResults);
           }else{
             this.searchPage.buildPageURLParameters(this.filters, [], false);
           }
            // this.searchPage.updateBaseUrlWithParameters();
            //var errorCodes:ErrorCodes = new ErrorCodes();
            this.searchUtils.status = this.errorCodes.DONE;
            if(this.searchUtils.totalResults == 0 ){
              this.searchUtils.status = this.errorCodes.NONE;
            }
            //this.searchPage.closeLoading();
            this.disableForms = false;
           this.searchPageUpdates.emit({disableForms: this.disableForms,searchUtils: this.searchUtils});

            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;
              }
            }
          },
          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,searchUtils: this.searchUtils});

          }
        );
      }
  }

  private handleError(message: string, error) {
    console.error("Content Providers advanced Search Page: "+message, error);
  }
}