import {ChangeDetectorRef, Component, Input, ViewChild} from '@angular/core';
import {ActivatedRoute, Router} from '@angular/router';
import {Meta, Title} from '@angular/platform-browser';

import {EnvProperties} from '../../utils/properties/env-properties';
import {Id, ResultLandingInfo} from '../../utils/entities/resultLandingInfo';
import {RouterHelper} from '../../utils/routerHelper.class';

import {PiwikService} from '../../utils/piwik/piwik.service';
import {ResultLandingService} from './resultLanding.service';
import {SEOService} from '../../sharedComponents/SEO/SEO.service';
import {HelperFunctions} from '../../utils/HelperFunctions.class';
import {HelperService} from '../../utils/helper/helper.service';
import {Location} from "@angular/common";
import {MetricsService} from "../../services/metrics.service";
import {RelationResult, ResultPreview} from "../../utils/result-preview/result-preview";
import {IndexInfoService} from "../../utils/indexInfo.service";
import {FormBuilder} from "@angular/forms";
import {StringUtils} from "../../utils/string-utils.class";
import {properties} from "../../../../environments/environment";
import {ISVocabulariesService} from "../../utils/staticAutoComplete/ISVocabularies.service";
import {Subscriber} from "rxjs";


@Component({
  selector: 'result-landing',
  templateUrl: 'resultLanding.component.html',
})
export class ResultLandingComponent {
  @Input() type: string = "publication";
  @Input() piwikSiteId = properties.piwikSiteId;
  @Input() communityId = null;
  @ViewChild('linkModal') linkModal;
  @ViewChild('citeModal') citeModal;
  @ViewChild('AlertModalDeletedByInference') alertModalDeletedByInference;
  @ViewChild('relationModal') relationModal;
  @ViewChild('organizationModal') organizationModal;
  public deleteByInferenceOpened: boolean = false;
  
  public resultLandingInfo: ResultLandingInfo;
  public supplementaryResults: RelationResult[];
  public relation: string = 'trust';
  public id: string;
  public title: string;
  
  /*Show all organizations*/
  public showAll: boolean = false;
  
  // Links for SEO
  public linkToLandingPage: string = null;
  public linkToSearchPage: string = null;
  
  public thresholdDescription: number = 670;
  public showNumDescription: number = 670;
  
  public citeThisClicked: boolean;
  
  // Metrics tab variables
  public metricsClicked: boolean;
  public hasAltMetrics: boolean = false;
  public viewsFrameUrl: string;
  public downloadsFrameUrl: string;
  public totalViews: number;
  public totalDownloads: number;
  public pageViews: number;
  
  // Custom tab paging variables
  public referencesPage: number = 1;
  public bioentitiesPage: number = 1;
  public relatedPage: number = 1;
  public similarPage: number = 1;
  public supplementaryPage: number = 1;
  public supplementedByPage: number = 1;
  public organizationsPage: number = 1;
  public openCitationsPage: number = 1;
  public pageSize: number = 10;
  
  // Map counting variables
  public bioentitiesNum: number = 0;
  public relatedResultsNum: number = 0;

  // Message variables
  public warningMessage = "";
  public errorMessage = "";
  public showLoading: boolean = true;
  public dashboard = properties.isDashboard;
  
  public routerHelper: RouterHelper = new RouterHelper();
  public activeTab: string = null;
  private doi: string;
  subscriptions = [];
  properties: EnvProperties = properties;
  public indexUpdateDate: Date;
  public pageContents = null;
  public divContents = null;
  public showFeedback: boolean = false;
  public feedbackFields: string [] = [
    'Title', 'Authors', 'Access rights',
    'Publisher information', 'Funding Information',
    'Persistent identifiers', 'Other'];
  
  constructor(private _resultLaningService: ResultLandingService,
              private _vocabulariesService: ISVocabulariesService,
              private _piwikService: PiwikService,
              private route: ActivatedRoute,
              private router: Router,
              private _meta: Meta,
              private _title: Title,
              private _router: Router,
              private helper: HelperService,
              private seoService: SEOService,
              private metricsService: MetricsService,
              private cdr: ChangeDetectorRef,
              private _location: Location,
              private indexInfoService: IndexInfoService,
              private fb: FormBuilder) {
  }
  
  ngOnInit() {
    if (typeof document !== 'undefined') {
      this.subscriptions.push(this.indexInfoService.getLastIndexDate(this.properties).subscribe(lastIndexUpdate => {
        if (lastIndexUpdate) {
          this.indexUpdateDate = new Date(lastIndexUpdate);
        }
      }));
    }
    //this.getDivContents();
    this.getPageContents();
    this.updateUrl(this.properties.domain +this.properties.baseLink +  this._router.url);
    this.subscriptions.push(this.route.queryParams.subscribe(data => {
      this.resultLandingInfo = null;
      if (data['articleId']) {
        this.type = "publication";
        this.updateTitle("Publication");
        this.linkToLandingPage = this.properties.searchLinkToPublication;
        this.linkToSearchPage = this.properties.searchLinkToPublications;
        this.id = data['articleId'];
        this.title = "Publication";
      } else if (data['datasetId']) {
        this.updateTitle("Dataset");
        this.type = "dataset";
        this.linkToLandingPage = this.properties.searchLinkToDataset;
        this.linkToSearchPage = this.properties.searchLinkToDatasets;
        this.id = data['datasetId'];
        this.title = "Research Data";
      } else if (data['softwareId']) {
        this.updateTitle("Software");
        this.type = "software";
        this.linkToLandingPage = this.properties.searchLinkToSoftwareLanding;
        this.linkToSearchPage = this.properties.searchLinkToSoftware;
        this.id = data['softwareId'];
        this.title = "Software";
      } else if (data['orpId']) {
        this.type = "orp";
        this.updateTitle("Other Research Product");
        this.linkToLandingPage = this.properties.searchLinkToOrp;
        this.linkToSearchPage = this.properties.searchLinkToOrps;
        this.id = data['orpId'];
        this.title = "Other Research Product";
      } else if (data["id"]){
        this.type = "result";
        this.id = data["id"];
        this.updateTitle("Research Result");
        this.linkToLandingPage = this.properties.searchLinkToResult;
        this.linkToSearchPage = this.properties.searchLinkToResults;
        this.title = "Research Result";
      }
      this.updateDescription("");
      
      this.metricsClicked = false;

      if (this.id && StringUtils.isOpenAIREID(this.id)) {
        this.getProvenanceVocabularyAndResultLandingInfo();
      } else {
        this.showLoading = false;
        
        this._router.navigate(['/error'], {
          queryParams: {
            "page": this._location.path(true),
            "page_type": this.type
          }
        });
      }
      
      this.viewsFrameUrl = this.properties.framesAPIURL + 'merge.php?com=query&data=[{"query":"resRepoViews", "resTitle":"' + this.id + '", "table":"","fields":[{"fld":"sum","agg":"sum","type":"column","yaxis":1,"c":false}],"xaxis":{"name":"month","agg":"sum"},"group":" ","color":"","type":"chart","size":200,"sort":"xaxis","xStyle":{"r":-30,"s":"6","l":"-","ft":"-","wt":"-"},"title":"","subtitle":"","xaxistitle":"Repository","yaxisheaders":["Monthly views"],"generalxaxis":"","theme":0,"in":[],"filters":[{"name":"","values":[""],"to":"-1"}]}]&info_types=["column"]&stacking=normal&steps=false&fontFamily=Courier&spacing=[5,0,0,0]&style=[{"color":"rgba(0, 0, 0, 1)","size":"18"},{"color":"rgba(0, 0, 0, 1)","size":"18"},{"color":"000000","size":""},{"color":"000000","size":""}]&backgroundColor=rgba(255,255,255,1)&colors[]=rgba(67, 67, 72, 1)&colors[]=rgba(144, 237, 125, 1)&colors[]=rgba(247, 163, 92, 1)&colors[]=rgba(128, 133, 233, 1)&colors[]=rgba(241, 92, 128, 1)&colors[]=rgba(228, 211, 84, 1)&colors[]=rgba(43, 144, 143, 1)&colors[]=rgba(244, 91, 91, 1)&colors[]=rgba(145, 232, 225, 1)&xlinew=0&ylinew=1&legends=true&tooltips=true&persistent=false';
      this.downloadsFrameUrl = this.properties.framesAPIURL + 'merge.php?com=query&data=[{"query":"resRepoDownloads", "resTitle":"' + this.id + '", "table":"","fields":[{"fld":"sum","agg":"sum","type":"column","yaxis":1,"c":false}],"xaxis":{"name":"month","agg":"sum"},"group":" ","color":"","type":"chart","size":200,"sort":"xaxis","xStyle":{"r":-30,"s":"6","l":"-","ft":"-","wt":"-"},"title":"","subtitle":"","xaxistitle":"Repository","yaxisheaders":["Monthly downloads"],"generalxaxis":"","theme":0,"in":[],"filters":[{"name":"","values":[""],"to":"-1"}]}]&info_types=["column"]&stacking=normal&steps=false&fontFamily=Courier&spacing=[5,0,0,0]&style=[{"color":"rgba(0, 0, 0, 1)","size":"18"},{"color":"rgba(0, 0, 0, 1)","size":"18"},{"color":"000000","size":""},{"color":"000000","size":""}]&backgroundColor=rgba(255,255,255,1)&colors[]=rgba(67, 67, 72, 1)&colors[]=rgba(144, 237, 125, 1)&colors[]=rgba(247, 163, 92, 1)&colors[]=rgba(128, 133, 233, 1)&colors[]=rgba(241, 92, 128, 1)&colors[]=rgba(228, 211, 84, 1)&colors[]=rgba(43, 144, 143, 1)&colors[]=rgba(244, 91, 91, 1)&colors[]=rgba(145, 232, 225, 1)&xlinew=0&ylinew=1&legends=true&tooltips=true&persistent=false';
      
      this.scroll();
    }));
  }
  
  private getPageContents() {
    if (this.communityId) {
      this.subscriptions.push(this.helper.getPageHelpContents(this.properties, this.communityId, this._router.url).subscribe(contents => {
        this.pageContents = contents;
      }));
    }
  }
  
  private getDivContents() {
    if (this.communityId) {
      this.subscriptions.push(this.helper.getDivHelpContents(this.properties, this.communityId, this._router.url).subscribe(contents => {
        this.divContents = contents;
      }));
    }
  }

  ngOnDestroy() {
    this.subscriptions.forEach(subscription => {
      if (subscription instanceof Subscriber) {
        subscription.unsubscribe();
      }
    });
    this._vocabulariesService.clearSubscriptions();
  }
  
  public getTypeName(): string {
    if (this.type === "dataset") {
      return "research data";
    } else if (this.type === "orp" || this.type === "other") {
      return "research product";
    } else {
      return this.type;
    }
  }
  
  public removeUnknown(array: string[], type: boolean = false): string[] {
    if (type) {
      return this.removeDuplicates(array).filter(value => value.toLowerCase() !== 'unknown');
    } else {
      return array.filter(value => value.toLowerCase() !== 'unknown');
    }
  }
  
  public removeDuplicates(array: string[]): string[] {
    let type = this.getTypeName();
    return array.filter(value => value.toLowerCase() !== type);
  }
  
  private getOpenCitations() {
    this.subscriptions.push(this._resultLaningService.getOpenCitations(this.id, this.properties).subscribe(
      data => {
        this.resultLandingInfo.openCitations = data[1];
      },
      err => {
        this.handleError("Error getting open citation for " + this.type + " with id: " + this.id, err);
      }
    ));
  }
  
  private getProvenanceVocabularyAndResultLandingInfo() {
    this.warningMessage = '';
    this.errorMessage = '';
    this.showLoading = true;
    
    this.resultLandingInfo = null;
    
    if (typeof document !== 'undefined') {
      this.subscriptions.push(this._vocabulariesService.getProvenanceActionVocabulary(this.properties).subscribe(
        provenanceActionVocabulary => {
          this.getResultLandingInfo(provenanceActionVocabulary);
        }, err => {
          this.getResultLandingInfo(null);
          this.handleError("Error getting provenance action vocabulary for " + this.type + " with id: " + this.id, err);
        }
      ));
    } else {
      this.getResultLandingInfo(null);
    }
    
  }
  
  private setActiveTab() {
    if (this.hasPrimaryInfo || this.hasSecondaryInfo) {
      this.activeTab = 'summary';
    } else if (this.resultLandingInfo.references && this.resultLandingInfo.references.length > 0) {
      this.activeTab = 'references';
    } else if ((this.resultLandingInfo.supplementaryResearchResults && this.resultLandingInfo.supplementaryResearchResults.length > 0) ||
      (this.resultLandingInfo.supplementedByResearchResults && this.resultLandingInfo.supplementedByResearchResults.length > 0)) {
      this.activeTab = 'supplementary';
    } else if ((this.resultLandingInfo.relatedResearchResults && this.resultLandingInfo.relatedResearchResults.length > 0) ||
      (this.resultLandingInfo.similarResearchResults && this.resultLandingInfo.similarResearchResults.length > 0)) {
      this.activeTab = 'related';
    } else if (this.resultLandingInfo.bioentities && this.bioentitiesNum > 0) {
      this.activeTab = 'bioentities';
    }
  }
  
  // private get numberOfTabs(): number {
  //   let numberOfTabs = 0;
  //   if(this.hasPrimaryInfo || this.hasSecondaryInfo) {
  //     numberOfTabs++;
  //   }
  //   if(this.resultLandingInfo.references && this.resultLandingInfo.references.length > 0) {
  //     numberOfTabs++;
  //   }
  //   if((this.resultLandingInfo.supplementaryResearchResults && this.resultLandingInfo.supplementaryResearchResults.length > 0) ||
  //     (this.resultLandingInfo.supplementedByResearchResults && this.resultLandingInfo.supplementedByResearchResults.length > 0)) {
  //     numberOfTabs++;
  //   }
  //   if((this.resultLandingInfo.relatedResearchResults && this.resultLandingInfo.relatedResearchResults.length > 0) ||
  //     (this.resultLandingInfo.similarResearchResults && this.resultLandingInfo.similarResearchResults.length > 0)) {
  //     numberOfTabs++;
  //   }
  //   if(this.resultLandingInfo.bioentities && this.bioentitiesNum > 0) {
  //     numberOfTabs++;
  //   }
  //   return numberOfTabs;
  // }
  
  private getResultLandingInfo(provenanceActionVocabulary: any) {
    this.subscriptions.push(this._resultLaningService.getResultLandingInfo(this.id, this.type, provenanceActionVocabulary, this.properties).subscribe(
      data => {
        this.resultLandingInfo = data;
        if (this.type == "result") { // no type was specified - update URL based this.resultLandingInfo.resultType
          this.updateUrlWithType();
        }
        this.seoService.createLinkForCanonicalURL(this.properties.domain+ properties.baseLink  + this.linkToLandingPage + this.resultLandingInfo.relcanId);
        if ((this.type == "publication") && (this.properties.environment == "beta" || this.properties.environment == "development") && (typeof document !== 'undefined')) {
          this.getOpenCitations();
        }
        
        if (this.resultLandingInfo.title) {
          this.updateTitle(this.resultLandingInfo.title);
          this.updateDescription((this.resultLandingInfo.description ? (this.resultLandingInfo.description) : ("," + this.resultLandingInfo.title)));
        }
        if (this.properties.enablePiwikTrack && (typeof document !== 'undefined')) {
          this.subscriptions.push(this._piwikService.trackView(this.properties, this.resultLandingInfo.title/*.name*/, this.piwikSiteId).subscribe());
        }
        
        let bioentitiesNum = 0;
        if (this.resultLandingInfo.bioentities != undefined) {
          this.resultLandingInfo.bioentities.forEach(function (value, key, map) {
            bioentitiesNum += value.size;
          });
        }
        this.bioentitiesNum = bioentitiesNum;
        if (typeof document !== 'undefined') {
          if (this.resultLandingInfo.identifiers != undefined && this.resultLandingInfo.identifiers.has('doi')) {
            this.doi = this.resultLandingInfo.identifiers.get('doi')[0];
            this.subscriptions.push(this.metricsService.hasAltMetrics(this.properties.altMetricsAPIURL, this.doi).subscribe(hasAltMetrics => {
              this.hasAltMetrics = hasAltMetrics;
            }, error => {
              this.hasAltMetrics = false;
            }));
          }
        }
        this.showLoading = false;
        this.setActiveTab();
      },
      err => {
        this.handleError("Error getting " + this.type + " for id: " + this.id, err);
        
        if (err.status == 404) {
          this._router.navigate(['/error'], {queryParams: {"page": this._location.path(true), "page_type": this.type}});
        }
        
        if (this.type == "publication" || this.type == "software") {
          this.errorMessage = 'No ' + this.type + ' found';
        } else if (this.type == "dataset") {
          this.errorMessage += "No research data found";
        } else if (this.type == "orp") {
          this.errorMessage += "No research product found";
        }
        this.showLoading = false;
        this.seoService.createLinkForCanonicalURL(this.properties.domain+ properties.baseLink  + this.linkToSearchPage);
      }
    ));
  }
  
  public metricsResults($event) {
    this.totalViews = $event.totalViews;
    this.totalDownloads = $event.totalDownloads;
    this.pageViews = $event.pageViews;
  }
  
  public get hasPrimaryInfo(): boolean {
    return !!this.resultLandingInfo && (!!this.resultLandingInfo.description || !!this.resultLandingInfo.identifiers || !!this.resultLandingInfo.subjects);
  }
  
  public get hasSecondaryInfo(): boolean {
    return (this.resultLandingInfo.fundedByProjects && this.resultLandingInfo.fundedByProjects.length > 0) ||
      (this.resultLandingInfo.contexts && this.resultLandingInfo.contexts.length > 0) ||
      (this.resultLandingInfo.hostedBy_collectedFrom && this.resultLandingInfo.hostedBy_collectedFrom.length > 0);
  }
  
  public get hasMetrics(): boolean {
    return !(this.totalViews && this.totalDownloads && this.pageViews) || this.totalViews > 0 || this.totalDownloads > 0 || this.pageViews > 0;
  }
  
  private updateDescription(description: string) {
    this._meta.updateTag({content: description.substring(0, 160)}, "name='description'");
    this._meta.updateTag({content: description.substring(0, 160)}, "property='og:description'");
  }
  
  private updateTitle(title: string) {
    var _prefix = "";
    // if(!this.communityId) {
    //   _prefix = "OpenAIRE | ";
    // }
    // var _title = _prefix + ((title.length > 50) ? title.substring(0, 50) : title);
    this._title.setTitle(title);
    this._meta.updateTag({content: title}, "property='og:title'");
  }
  
  private updateUrl(url: string) {
    this._meta.updateTag({content: url}, "property='og:url'");
  }
  
  public totalPages(totalResults: number): number {
    let totalPages: any = totalResults / this.pageSize;
    if (!(Number.isInteger(totalPages))) {
      totalPages = (parseInt(totalPages, this.pageSize) + 1);
    }
    return totalPages;
  }
  
  public updateReferencesPage($event) {
    this.referencesPage = $event.value;
  }
  
  public updateBioentitiesPage($event) {
    this.bioentitiesPage = $event.value;
  }
  
  public updateRelatedPage($event) {
    this.relatedPage = $event.value;
  }
  
  public updateSimilarPage($event) {
    this.similarPage = $event.value;
  }
  
  public updateSupplementaryPage($event) {
    this.supplementaryPage = $event.value;
  }
  
  public updateSupplementedByPage($event) {
    this.supplementedByPage = $event.value;
  }
  
  public updateOrganizationsPage($event) {
    this.organizationsPage = $event.value;
  }
  
  public updateOpenCitationsPage($event) {
    this.openCitationsPage = $event.value;
  }
  
  public accessClass(accessMode: string): string {
    if (accessMode.toLowerCase().indexOf('open') !== -1) {
      return 'open';
    } else if (accessMode.toLowerCase() === 'not available') {
      return 'unknown';
    } else {
      return 'closed';
    }
  }
  
  public keysToArray(bioentities: Map<string, string>): string[] {
    let keys: string[] = [];
    bioentities.forEach(function (value, key, map) {
      keys.push(key);
    });
    return keys;
  }
  
  public getKeys(map) {
    return Array.from(map.keys());
  }
  
  public scroll() {
    HelperFunctions.scroll();
  }
  
  private handleError(message: string, error) {
    if (this.type == "publication") {
      console.error("Publication Landing Page: " + message, error);
    } else if (this.type == "dataset") {
      console.error("Research Data Landing Page: " + message, error);
    } else if (this.type == "software") {
      console.error("Software Landing Page: " + message, error);
    } else if (this.type == "orp") {
      console.error("Other Research Product Landing Page: " + message, error);
    } else {
      console.error("Landing Page: " + message, error);
    }
  }
  
  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;
  }
  
  openDeletedByInference() {
    this.deleteByInferenceOpened = true;
    this.alertModalDeletedByInference.cancelButton = false;
    this.alertModalDeletedByInference.okButton = false;
    this.alertModalDeletedByInference.alertTitle = "Other versions of";
    this.alertModalDeletedByInference.open();
  }
  
  public getResultPreview(result: RelationResult): ResultPreview {
    return ResultPreview.relationResultConvert(result, this.relation);
  }
  
  updateUrlWithType() {
    this.type = this.resultLandingInfo.resultType;
    if (this.type == "publication") {
      this.linkToLandingPage = this.properties.searchLinkToPublication;
      this.linkToSearchPage = this.properties.searchLinkToPublications;
    } else if (this.type == "dataset") {
      this.linkToLandingPage = this.properties.searchLinkToDataset;
      this.linkToSearchPage = this.properties.searchLinkToDatasets;
    } else if (this.type == "software") {
      this.linkToLandingPage = this.properties.searchLinkToSoftwareLanding;
      this.linkToSearchPage = this.properties.searchLinkToSoftware;
    } else if (this.type == "other") {
      this.type = "orp";
      this.linkToLandingPage = this.properties.searchLinkToOrp;
      this.linkToSearchPage = this.properties.searchLinkToOrps;
    }
    this._location.go(this.linkToLandingPage + this.id);
  }
  
  public getReferenceUrl(id: Id): string {
    if (id.type === "doi") {
      return this.properties.doiURL + id.value;
    } else if (id.type === "pmc") {
      return this.properties.pmcURL + id.value;
    } else if (id.type === "pmid") {
      return this.properties.pmidURL + id.value;
    } else if (id.type === "handle") {
      return this.properties.handleURL + id.value;
    } else {
      return null;
    }
  }
  
  public getReferenceIdName(id: Id): string {
    if (id.type === "doi") {
      return 'DOI'
    } else if (id.type === "pmc") {
      return 'Europe PMC'
    } else if (id.type === "pmid") {
      return 'PubMed';
    } else if (id.type === "handle") {
      return 'Handle.NET';
    } else {
      return null;
    }
  }
  
  public openLinkModal() {
    this.linkModal.cancelButton = false;
    this.linkModal.okButton = false;
    this.linkModal.alertTitle = "Link this " + this.getTypeName() + " to";
    this.linkModal.open();
  }
  
  public openCiteModal() {
    this.citeThisClicked = true;
    this.citeModal.cancelButton = false;
    this.citeModal.okButton = false;
    this.citeModal.alertTitle = "Cite this " + this.getTypeName() + " to";
    this.citeModal.open();
  }
}