import {Component, Input, ViewChild} from '@angular/core';
import {ActivatedRoute} from '@angular/router';
import {AdvancedField} from '../searchUtils/searchHelperClasses.class';
import {SearchResearchResultsService} from '../../services/searchResearchResults.service';
import {ErrorCodes} from '../../utils/properties/errorCodes';
import {ErrorMessagesComponent}    from '../../utils/errorMessages.component';
import {AdvancedSearchPageComponent} from '../searchUtils/advancedSearchPage.component';
import {SearchFields} from '../../utils/properties/searchFields';
import {SearchCustomFilter, SearchUtilsClass} from '../searchUtils/searchUtils.class';
import {EnvProperties} from '../../utils/properties/env-properties';


@Component({
  selector: 'advanced-search-research-results',
  template: `
    <advanced-search-page 
           pageTitle="Advanced Search for {{ getEntityName(resultType, true, true) | titlecase }}" 
           [entityType]="resultType"
           [type]="getEntityName(resultType, true, true)"
           [(results)] = "results"
           [(searchUtils)] = "searchUtils"
           [(fieldIds)]="fieldIds" [(fieldIdsMap)]="fieldIdsMap"   [(selectedFields)]="selectedFields"
           [csvParams]="csvParams" [csvPath]="getEntityName(resultType, true, false)" 
           [simpleSearchLink]="simpleSearchLink"
           [disableForms]="disableForms"
           [loadPaging]="loadPaging"
           [oldTotalResults]="oldTotalResults"
           [(openaireLink)]=openaireLink
           [piwikSiteId]=piwikSiteId [hasPrefix]="hasPrefix"
           searchFormClass="publicationsSearchForm"
           [(sort)]=sort >
    </advanced-search-page>
    `
})

export class AdvancedSearchResearchResultsComponent {
  @Input() resultType: string = "publication";

  public simpleSearchLink: string = "";

  private errorCodes: ErrorCodes;
  private errorMessages: ErrorMessagesComponent;
  @Input() piwikSiteId = null;
  @Input() hasPrefix: boolean = true;
  public results =[];
  public filters =[];

  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 selectedFields:AdvancedField[] =  [];
  public resourcesQuery = "((oaftype exact result) and (resulttypeid exact "+this.resultType+"))";
  public csvParams: string;
  public disableForms: boolean = false;
  public loadPaging: boolean = true;
  public oldTotalResults: number = 0;
  @Input() openaireLink: string ;
  @Input() customFilter:SearchCustomFilter= null;
  public pagingLimit: number = 0;
  public isPiwikEnabled;
  public sort: boolean = true;
  properties:EnvProperties;

  @ViewChild (AdvancedSearchPageComponent) searchPage : AdvancedSearchPageComponent ;


  constructor (private route: ActivatedRoute, private _searchResearchResultsService: SearchResearchResultsService ) {
    this.results =[];
    this.errorCodes = new ErrorCodes();
    this.errorMessages = new ErrorMessagesComponent();
    this.searchUtils.status = this.errorCodes.LOADING;
  }
  ngOnInit() {
    this.route.data.subscribe((data: { envSpecific: EnvProperties }) => {
        this.properties= data.envSpecific;
        this.pagingLimit = data.envSpecific.pagingLimit;
        this.isPiwikEnabled = data.envSpecific.enablePiwikTrack;

        if(this.resultType == "publication") {
          this.simpleSearchLink = this.properties.searchLinkToPublications;
          this.searchUtils.baseUrl = this.properties.searchLinkToAdvancedPublications;
        } else if(this.resultType == "dataset") {
          this.simpleSearchLink = this.properties.searchLinkToDatasets;
          this.searchUtils.baseUrl = this.properties.searchLinkToAdvancedDatasets;
        } else if(this.resultType == "software") {
          this.simpleSearchLink = this.properties.searchLinkToSoftware;
          this.searchUtils.baseUrl = this.properties.searchLinkToAdvancedSoftware;
        } else if(this.resultType == "other") {
          this.simpleSearchLink = this.properties.searchLinkToOrps;
          this.searchUtils.baseUrl = this.properties.searchLinkToAdvancedOrps;
        }
    });

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

      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.searchPage.fieldIds = this.fieldIds;
      this.selectedFields =[];
      this.searchPage.selectedFields = this.selectedFields;
      this.searchPage.fieldIdsMap = this.fieldIdsMap;
      this.searchPage.customFilter = this.customFilter;
      this.searchPage.getSelectedFiltersFromUrl(params);
      this.getResults(this.searchPage.createQueryParameters(),  this.searchUtils.page, this.searchUtils.size, this.searchUtils.sortBy);
    });
  }

  ngOnDestroy() {
    this.sub.unsubscribe();
  }

  sub: any;
  public getResults(parameters:string, page: number, size: number, sortBy: string){
    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.searchUtils.status = this.errorCodes.LOADING;
      this.disableForms = true;
      this.results = [];
      this.searchUtils.totalResults = 0;

      this._searchResearchResultsService.advancedSearch(this.resultType, parameters, page, size, sortBy, this.properties).subscribe(
        data => {
          this.searchUtils.totalResults = data[0];
          this.results = data[1];
          this.searchPage.updateBaseUrlWithParameters();
          this.searchUtils.status = this.errorCodes.DONE;
          if(this.searchUtils.totalResults == 0 ){
            this.searchUtils.status = this.errorCodes.NONE;
          }
          this.disableForms = false;

          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 => {
          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;

        }
      );
    }
  }



  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");
    }
  }
}