import {ChangeDetectorRef, Component, ViewChild} from '@angular/core';
import {Subscription, zip} from 'rxjs';
import {Router} from '@angular/router';
import {Meta, Title} from '@angular/platform-browser';
import {ConfigurationService} from '../openaireLibrary/utils/configuration/configuration.service';
import {RefineFieldResultsService} from '../openaireLibrary/services/refineFieldResults.service';
import {OpenaireEntities, SearchFields} from '../openaireLibrary/utils/properties/searchFields';
import {RouterHelper} from '../openaireLibrary/utils/routerHelper.class';
import {EnvProperties} from '../openaireLibrary/utils/properties/env-properties';
import {ErrorCodes} from '../openaireLibrary/utils/properties/errorCodes';
import {PiwikService} from '../openaireLibrary/utils/piwik/piwik.service';
import {SEOService} from '../openaireLibrary/sharedComponents/SEO/SEO.service';
import {HelperService} from "../openaireLibrary/utils/helper/helper.service";
import {Filter} from "../openaireLibrary/searchPages/searchUtils/searchHelperClasses.class";
import {AggregatorInfo, PortalAggregators} from "../utils/aggregators";
import {SearchCustomFilter} from "../openaireLibrary/searchPages/searchUtils/searchUtils.class";
import {properties} from "../../environments/environment";
import {portalProperties} from "../../environments/environment-aggregator";
import {StringUtils} from "../openaireLibrary/utils/string-utils.class";
import {ConnectHelper} from "../openaireLibrary/connect/connectHelper";
import {Numbers, NumbersComponent} from "../openaireLibrary/sharedComponents/numbers/numbers.component";

@Component({
  selector: 'home',
  templateUrl: 'home.component.html',
	styleUrls: ['home.component.less']
})
export class HomeComponent {
  public keyword:string = "";
  public searchFields:SearchFields = new SearchFields();
  public errorCodes:ErrorCodes = new ErrorCodes();
  public routerHelper:RouterHelper = new RouterHelper();
	public numbers: Numbers = {};
  properties: EnvProperties = properties;
	public openaireEntities = OpenaireEntities;
  public readMore: boolean = false;
	public funders = [];
  subs: Subscription[] = [];
  resultsQuickFilter: { filter: Filter, selected: boolean, filterId: string, value: string } = {
    filter: null,
    selected: true,
    filterId: "resultbestaccessright",
    value: "Open Access"
  };
  selectedEntity = "all";
  disableSelect;
  selectedEntitySimpleUrl;
  selectedEntityAdvancedUrl;
  resultTypes:Filter = {values:[],filterId:"type", countSelectedValues: 0, filterType: 'checkbox', originalFilterId: "", valueIsExact: true, title: "Result Types",filterOperator:"or"};
  public pageContents = null;
  customFilter:SearchCustomFilter= null;
  aggregatorId;
  aggregator:AggregatorInfo;
  @ViewChild('numbersComponent', { static: true }) numbersComponent: NumbersComponent;
  
  constructor (
    private _router: Router,
    private _refineFieldResultsService:RefineFieldResultsService,
    private _piwikService:PiwikService,
    private config: ConfigurationService, private _meta: Meta, private _title: Title, private seoService: SEOService,
    private helper: HelperService,
    private cdr: ChangeDetectorRef
  ) {
    this.aggregatorId = ConnectHelper.getCommunityFromDomain(properties.domain);
    this.aggregator =  PortalAggregators.getFilterInfoByMenuId(this.aggregatorId);
    this.customFilter = PortalAggregators.getSearchCustomFilterByAggregator(this.aggregator);
    let description = "OpenAIRE Explore: Over 100M of research deduplicated, 170K research software, 11M research data. One of the largest open scholarly records collection worldwide.";
    let title = "OpenAIRE - Explore | " +this.aggregator.title;
    this._title.setTitle(title);
    this._meta.updateTag({content:description},"name='description'");
    this._meta.updateTag({content:description},"property='og:description'");
    this._meta.updateTag({content:title},"property='og:title'");
  }

  private getPageContents() {
    this.subs.push(this.helper.getPageHelpContents(this.properties, 'openaire', this._router.url).subscribe(contents => {
      this.pageContents = contents;
    }));
  }

  public ceil(num: number) {
    return Math.ceil(num);
  }

  public ngOnInit() {
    this.seoService.createLinkForCanonicalURL(this.properties.domain + this.properties.baseLink+this._router.url, false);
    this.getPageContents();
    if(this.properties!=null){
      var url = this.properties.domain + this.properties.baseLink+this._router.url;
      this._meta.updateTag({content:url},"property='og:url'");
      if(this.properties.enablePiwikTrack && (typeof document !== 'undefined')){
        this.subs.push(this._piwikService.trackView(this.properties, "OpenAIRE").subscribe());
      }
			if(this.numbersComponent) {
				this.numbersComponent.showPublications = portalProperties.entities.publication.isEnabled;
				this.numbersComponent.showDatasets = portalProperties.entities.dataset.isEnabled;
				this.numbersComponent.showSoftware = portalProperties.entities.software.isEnabled;
				this.numbersComponent.showOrp = portalProperties.entities.other.isEnabled;
				this.numbersComponent.showOrganizations = portalProperties.entities.organization.isEnabled;
				this.numbersComponent.showProjects = portalProperties.entities.project.isEnabled;
				this.numbersComponent.showDataProviders = portalProperties.entities.datasource.isEnabled;
			}
      this.subs.push(this.config.communityInformationState.subscribe(data => {
          if(data) {
            var showEntity = {};
            for (var i = 0; i < data['entities'].length; i++) {
              showEntity["" + data['entities'][i]["pid"] + ""] = data['entities'][i]["isEnabled"];
            }
						if(this.numbersComponent) {
							this.numbersComponent.showPublications = !!showEntity["publication"];
							this.numbersComponent.showDatasets = !!showEntity["dataset"];
							this.numbersComponent.showSoftware = !!showEntity["software"];
							this.numbersComponent.showOrp = !!showEntity["orp"];
							this.numbersComponent.showProjects = !!showEntity["project"];
							this.numbersComponent.showDataProviders = !!showEntity["datasource"];
							this.numbersComponent.showOrganizations = !!showEntity["organization"];
						}
            if(this.numbersComponent && this.numbersComponent.showPublications){
              this.resultTypes.values.push({name: this.openaireEntities.PUBLICATIONS , id:"publications",selected:false, number:0});
            }
            if(this.numbersComponent && this.numbersComponent.showDatasets){
              this.resultTypes.values.push({name: this.openaireEntities.DATASETS , id:"datasets",selected:false, number:0});
            }
            if(this.numbersComponent && this.numbersComponent.showSoftware){
              this.resultTypes.values.push({name: this.openaireEntities.SOFTWARE , id:"software",selected:false, number:0});
            }
            if(this.numbersComponent && this.numbersComponent.showOrp){
              this.resultTypes.values.push({name: this.openaireEntities.OTHER , id:"other",selected:false, number:0});
            }
						if(this.numbersComponent) {
							this.numbersComponent.init(false, false, this.numbersComponent.showPublications, this.numbersComponent.showDatasets, this.numbersComponent.showSoftware, this.numbersComponent.showOrp, this.numbersComponent.showProjects, this.numbersComponent.showDataProviders, this.numbersComponent.showOrganizations,
								this.customFilter ? StringUtils.URIEncode(this.customFilter.queryFieldName + " exact " + StringUtils.quote((this.customFilter.valueId))) : '');
						}
						this.getFunders();
          }
        },
        error => {
          this.handleError("Error getting community information", error);
        }
      ));
    }

  }
  public ngOnDestroy() {
    for (let sub of this.subs) {
      sub.unsubscribe();
    }
  }

  private handleError(message: string, error) {
    console.error("Home Page: "+message, error);
  }
  entityChanged($event){
    this.selectedEntity = $event.entity;
    this.selectedEntitySimpleUrl = $event.simpleUrl;
    this.selectedEntityAdvancedUrl = $event.advancedUrl;
  }
  goTo(simple:boolean){
    let url = (simple)?this.selectedEntitySimpleUrl:this.selectedEntityAdvancedUrl;
    let parameterNames = [];
    let parameterValues = [];
    if (this.selectedEntity == "result") {
      if (this.resultTypes) {
        let values = [];
        for(let value of this.resultTypes.values){
          if (value.selected) {
            values.push(value.id);
          }
        }
        if (values.length > 0 && values.length !=4) {
          parameterNames.push("type");
          parameterValues.push(values.join(","));
        }
        if (this.resultsQuickFilter) {
          parameterNames.push("qf");
          parameterValues.push("" + this.resultsQuickFilter.selected);
        }
      }
    }else if(this.selectedEntity == "all"){
      if (this.resultsQuickFilter) {
        parameterNames.push("qf");
        parameterValues.push("true");
      }
    }
    if(this.keyword.length > 0) {
      parameterNames.push("fv0");
      parameterValues.push(this.keyword);
      parameterNames.push("f0");
      parameterValues.push("q");
    }
    if(this.customFilter){
      parameterNames.push(this.customFilter.queryFieldName);
      parameterValues.push(this.customFilter.valueId);
      parameterNames.push("cf");
      parameterValues.push("true");
    }
    this._router.navigate([url], {queryParams: this.routerHelper.createQueryParams(parameterNames, parameterValues)});
  }
  getQueryParamsForAdvancedSearch(entity){
    let params = {};
    if (entity == "result") {
      if (this.resultsQuickFilter) {
        params["qf"] = "" + this.resultsQuickFilter.selected;
      }
    }
    if(this.keyword.length > 0) {
      params["fv0"] = "" + this.keyword;
      params["f0"] = "q";
    }
    if(this.customFilter){
			params = this.customFilter.getParameters(params);
    }
    return params;
  }

	getFunders() {
		let refineParams1 = '&fq=country%20exact%20%22CA%22';
		let refineParams2 = '&fq=resultbestaccessright%20exact%20%22Open%20Access%22&fq=country%20exact%20%22CA%22%20';
		this.subs.push(zip(
			this._refineFieldResultsService.getRefineFieldsResultsByEntityName(['relfunder'], 'result', this.properties, refineParams1),
			this._refineFieldResultsService.getRefineFieldsResultsByEntityName(['relfunder'], 'result', this.properties, refineParams2)
		).subscribe((data: any[]) => {
			let queriedFunders1 = data[0][1][0].values;
			queriedFunders1.forEach(queriedFunder => {
				if(queriedFunder.id.includes('nserc')) {
					this.funders.push({
						"id": queriedFunder.id,
						"name": queriedFunder.name,
						"publications": queriedFunder.number,
						"openAccessPublications": null,
						"logo": 'assets/nserc_logo.png',
						"params": {
							relfunder: '"'+encodeURIComponent(queriedFunder.id)+'"'
						}
					});
				} else if(queriedFunder.id.includes('cihr')) {
					this.funders.push({
						"id": queriedFunder.id,
						"name": queriedFunder.name,
						"publications": queriedFunder.number,
						"openAccessPublications": null,
						"logo": 'assets/cihr_logo.png',
						"params": {
							relfunder: '"'+encodeURIComponent(queriedFunder.id)+'"'
						}
					});
				} else if(queriedFunder.id.includes('sshrc')) {
					this.funders.push({
						"id": queriedFunder.id,
						"name": queriedFunder.name,
						"publications": queriedFunder.number,
						"openAccessPublications": null,
						"logo": 'assets/sshrc_logo.png',
						"params": {
							relfunder: '"'+encodeURIComponent(queriedFunder.id)+'"'
						}
					});
				}
			});
			let queriedFunders2 = data[1][1][0].values;
			queriedFunders2.forEach(queriedFunder => {
				for(let funder of this.funders) {
					if(queriedFunder.id == funder.id) {
						funder.openAccessPublications = queriedFunder.number;
					}
				}
			});
		}));
	}

  isRouteAvailable(routeToCheck: string) {
    for (let i = 0; i < this._router.config.length; i++) {
      let routePath: string = this._router.config[i].path;
      if (routePath == routeToCheck) {
        return true;
      }
    }
    return false;
  }

  disableSelectChange(event: boolean) {
    this.disableSelect = event;
    this.cdr.detectChanges();
  }
}