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

import {Observable}                     from 'rxjs/Observable';
import {Subject}                        from 'rxjs/Subject';

import {OrganizationService}            from '../../services/organization.service';
import {OrganizationInfo}               from '../../utils/entities/organizationInfo';
import {ReportsService}                 from '../../services/reports.service';
import {FetchPublications}              from '../../utils/fetchEntitiesClasses/fetchPublications.class';
// import {FetchDatasets}                  from '../../utils/fetchEntitiesClasses/fetchDatasets.class';
import {FetchProjects}                  from '../../utils/fetchEntitiesClasses/fetchProjects.class';
import {FetchDataproviders}             from '../../utils/fetchEntitiesClasses/fetchDataproviders.class';
import {SearchPublicationsService}      from '../../services/searchPublications.service';
// import {SearchDatasetsService}      from '../../services/searchDatasets.service';
import {SearchDataprovidersService}     from '../../services/searchDataproviders.service';
import {SearchProjectsService}          from '../../services/searchProjects.service';
import {ErrorCodes}                     from '../../utils/properties/errorCodes';
import {SearchingProjectsTabComponent}  from '../landing-utils/searchingProjectsInTab.component';
import {RouterHelper}                   from '../../utils/routerHelper.class';

import {ModalLoading}                   from '../../utils/modal/loading.component';
import {AlertModal}                     from '../../utils/modal/alert';
import {PiwikService}                   from '../../utils/piwik/piwik.service';
import {StringUtils}                    from '../../utils/string-utils.class';
import {EnvProperties}                  from '../../utils/properties/env-properties';
import { SEOService } from '../../sharedComponents/SEO/SEO.service';

@Component({
    selector: 'organization',
    templateUrl: 'organization.component.html',
})

export class OrganizationComponent {
  @Input() piwikSiteId = null;
    public organizationInfo: OrganizationInfo;
    public organizationId: string;

    // Message variables
    public warningMessage = "";
    public errorMessage = "";
    public showLoading: boolean = true;

    // CSV variables
    public downloadURLAPI: string;
    public csvProjectParamsHead: string;
    public csvPublicationParamsHead: string;
    public csvParamsTail: string;
    public csvAffiliatedPublications: string;

    // Active tab variable for responsiveness
    public activeTab: string = "Publications";

    // Variables for publications, research data, projects, dataproviders tabs
    public fetchPublications: FetchPublications;
    public linkToSearchPublications: string = "";
    // public fetchDatasets: FetchDatasets;
    // public linkToSearchDatasets: string = "";
    public fetchProjects: FetchProjects;
    public fetchDataproviders : FetchDataproviders;
    public linkToSearchDataproviders:string = "";
    //public projectFunders:string[] = [];

    // Variables for projects query (query results only if projects tab is clicked)
    public projectsClicked: boolean = false;
    @ViewChild (SearchingProjectsTabComponent) searchingProjectsTabComponent : SearchingProjectsTabComponent ;

    @ViewChild (ModalLoading) loading : ModalLoading ;
    // Alert box when CSV: Project Publications for a funder is requested
    @ViewChild('AlertModalApplyAll') alertApplyAll;
    // Alert box when something is wrong with CSV requests
    @ViewChild('AlertModalCsvError') alertCsvError;

    public routerHelper:RouterHelper = new RouterHelper();
    public errorCodes:ErrorCodes = new ErrorCodes();

    //private projectsNum: number = 0;
    //private fundersSet: Set<string>;
    //private emptyFundersSet: boolean = true;

    // Request results for publications, research data and content providers only the one time (first time tab is clicked)
    private reloadPublications: boolean = true;
    // private reloadDatasets: boolean = true;
    private reloadDataproviders: boolean = true;

    // Helper variables to specify funder in downloadPublicationsFile function
    private funder: string;
    private funderId: string;
    private funderCountPublications: number;
    sub: any;
    infoSub: any;
    piwiksub: any;
    downloadFileSub: any;
    downloadFilePiwikSub: any;
    countProjectsSub: any;
    countPublSub: any;
    downloadProjectPublSub: any;
    properties:EnvProperties;
    //private ngUnsubscribe: Subject<void> = new Subject<void>();

    constructor (private element: ElementRef,
                 private _organizationService: OrganizationService,
                 private _piwikService:PiwikService,
                 private  route: ActivatedRoute,
                 private _searchDataprovidersService: SearchDataprovidersService,
                 private _reportsService: ReportsService,
                 private _searchPublicationsService: SearchPublicationsService,
                 // private _searchDatasetsService: SearchDatasetsService,
                 private _searchProjectsService: SearchProjectsService,
                 private _meta: Meta,
                 private _title: Title,
                 private _router: Router,
               private seoService: SEOService) {

            this.fetchPublications = new FetchPublications(this._searchPublicationsService);
            // this.fetchDatasets = new FetchDatasets(this._searchDatasetsService);
            this.fetchProjects = new FetchProjects(this._searchProjectsService);
            this.fetchDataproviders = new FetchDataproviders(this._searchDataprovidersService);
    }

    ngOnInit() {
      this.route.data
        .subscribe((data: { envSpecific: EnvProperties }) => {
           this.properties = data.envSpecific;
           this.updateUrl(data.envSpecific.baseLink+this._router.url);
           this.seoService.createLinkForCanonicalURL(this.properties.baseLink+this._router.url);
        });
        this.sub =  this.route.queryParams.subscribe(params => {
            this.organizationInfo=null;
            this.updateTitle("Organization");
            this.updateDescription("");
            this.projectsClicked = false;

            this.organizationId = params['organizationId'];

            if(this.organizationId){
                this.getOrganizationInfo();
            }else{
                this.showLoading = false;
                this.warningMessage="No valid organization id";
            }

            if (typeof document !== 'undefined') {
               this.element.nativeElement.scrollIntoView();
            }

            this.csvParamsTail = '" and relorganizationid exact "'+this.organizationId+'" ))';

        });

        this.downloadURLAPI =this.properties.csvAPIURL;
        this.csvAffiliatedPublications = this.downloadURLAPI+"?format=csv&type=publications&fq=(((oaftype exact result) and (resulttypeid exact publication)) and (relorganizationid exact \""+this.organizationId+"\"))";
        this.csvProjectParamsHead = 'format=csv&type=projects&fq=( (oaftype exact project)and (funder exact "';
        //this.csvPublicationParamsHead = 'format=csv-special&type=publications&page=0&query=((((oaftype exact result) and (resulttypeid exact publication)) and (funderid exact ';
    }


    ngOnDestroy() {
      if(this.sub){
        this.sub.unsubscribe();
      }
      if(this.piwiksub){
        this.piwiksub.unsubscribe();
      }
      if(this.infoSub) {
        this.infoSub.unsubscribe();
      }
      if(this.downloadFileSub) {
        this.downloadFileSub.unsubscribe();
      }
      if(this.downloadFilePiwikSub) {
        this.downloadFilePiwikSub.unsubscribe();
      }
      if(this.countProjectsSub) {
        this.countProjectsSub.unsubscribe();
      }
      if(this.countPublSub) {
        this.countPublSub.unsubscribe();
      }
      if(this.downloadProjectPublSub) {
        this.downloadProjectPublSub.unsubscribe();
      }

      /*
      this.ngUnsubscribe.next();
      this.ngUnsubscribe.complete();
      */
    }

    private getOrganizationInfo ()  {

        this.warningMessage = '';
        this.errorMessage=""
        this.showLoading = true;

        this.organizationInfo = null;

        this.infoSub = this._organizationService.getOrganizationInfo(this.organizationId, this.properties).subscribe(
            data => {
                if(data == null) {
                    this.showLoading = false;
                    this.errorMessage = 'No organization found';
                } else {
                    this.organizationInfo = data;
                    this.updateTitle(this.organizationInfo.title.name);
                    this.updateDescription("Organization, country, "+this.organizationInfo.title.name +((this.organizationInfo.title.name && this.organizationInfo.title.name != this.organizationInfo.name)?(", "+this.organizationInfo.name):"") );
                    if(this.properties.enablePiwikTrack && (typeof document !== 'undefined')){
                      this.piwiksub = this._piwikService.trackView(this.properties, this.organizationInfo.title.name, this.piwikSiteId).subscribe();
                    }
                    var refineFields:string [] = ["funder"];

                    //this.searchPublications();
                    this.fetchPublications.getNumForEntity("organization", this.organizationId, this.properties);
                    // this.fetchDatasets.getNumForEntity("organization", this.organizationId, this.properties);
                    this.fetchProjects.getResultsForOrganizations(this.organizationId, "", 1, 0,refineFields,this.properties);

                    this.fetchDataproviders.getNumForEntity("organization", this.organizationId,this.properties);

                    this.showLoading = false;

                    /*let projectsNum = 0;

                    if(this.organizationInfo.projects != undefined) {
                         this.fundersSet = new Set<string>();
                        this.organizationInfo.projects.forEach(function (value, key, map) {
                            projectsNum += value.length;
                            this.fundersSet.add(key);
                        }.bind(this));
                    }

                    this.projectsNum = projectsNum;*/
                }
            },
            err => {
                //console.log(err)
                this.handleError("Error getting organization for id: "+this.organizationId, err);

                this.errorMessage = 'No organization found';
                this.showLoading = false;
            }
        );
    }

/*
    private handleClick(funder: string) {
         if(this.emptyFundersSet) {
             this.fundersSet.clear();
             this.emptyFundersSet = false;
         }

         if(this.fundersSet.has(funder)) {
             this.fundersSet.delete(funder);

             if(this.fundersSet.size == 0) {
                 this.organizationInfo.projects.forEach(function (value, key, map) {
                     this.fundersSet.add(key);
                 }.bind(this));
                 this.emptyFundersSet = true;
             }
             console.info(funder+" funder deleted");
         } else {
             this.fundersSet.add(funder);
             console.info(funder+" funder added");
         }
     }
*/
     //private getProjectsData(key: string): any {
         //return this.projectsData;
     //}

     private searchPublications() {
       this.fetchPublications.getResultsForEntity("organization", this.organizationId, 1, 10,this.properties);
       this.linkToSearchPublications = this.properties.searchLinkToAdvancedPublications;
       //if(this.fetchPublications.searchUtils.totalResults > 0) {
         this.reloadPublications = false;
         //this.activeTab = "Publications";
       //} else {
         //this.projectsClicked = true;
       //}
     }

     // private searchDatasets() {
     //   this.fetchDatasets.getResultsForEntity("organization", this.organizationId, 1, 10,this.properties);
     //   this.linkToSearchPublications = this.properties.searchLinkToAdvancedDatasets;
     //   this.reloadDatasets = false;
     // }

     private searchDataproviders() {
       this.fetchDataproviders.getResultsForEntity("organization", this.organizationId, 1, 10,this.properties);
       this.linkToSearchDataproviders = this.properties.searchLinkToAdvancedDataProviders;

       //if(this.fetchDataproviders.searchUtils.totalResults > 0) {
         this.reloadDataproviders = false;
         //this.activeTab = "Content Providers";
       //} else {

       //}
     }

     public searchPublicationsInit() {
         if(this.reloadPublications && this.fetchPublications.searchUtils.totalResults > 0) {
             this.searchPublications();
         }
     }

     // public searchDatasetsInit() {
     //   if(this.reloadDatasets && this.fetchDatasets.searchUtils.totalResults > 0) {
     //     this.searchDatasets();
     //   }
     // }

     public searchDataprovidersInit() {
         if(this.reloadDataproviders && this.fetchDataproviders.searchUtils.totalResults > 0) {
             this.searchDataproviders();
         }
     }

     public downloadFile(url:string, filename: string){

       this.openLoading();
       this.setMessageLoading("Downloading CSV file");

       this.downloadFileSub = this._reportsService.downloadCSVFile(url).subscribe(
           data => {
               this.closeLoading();

               var url = window.URL.createObjectURL(data);
               var a = window.document.createElement('a');
               window.document.body.appendChild(a);
               a.setAttribute('style', 'display: none');
               a.href = url;
               a.download = filename+".csv";
               a.click();
               window.URL.revokeObjectURL(url);
               a.remove(); // remove the element

               //window.open(window.URL.createObjectURL(data));
                if(this.properties.enablePiwikTrack && (typeof document !== 'undefined')){
                  this.downloadFilePiwikSub = this._piwikService.trackDownload(this.properties, url, this.piwikSiteId).subscribe();
                }
           },
           err => {
             //console.log("Error downloading the file.");
             this.handleError("Error downloading file: "+filename+".csv", err);

             this.closeLoading();
             this.confirmOpenCsvError();
           }/*,
           () => console.log('Completed file download.')*/
         );
     }

     private downloadPublicationsFile(funder: string, funderId:string, count:number){

       this.openLoading();
       this.setMessageLoading("Downloading CSV file");

       let response: string[] = [];
       let totalResponse: string = "";
       let projects = [];
       let counter: number = count;
       let title: boolean = false;

       let filename: string = 'funder-project-publications-report';

       this.countProjectsSub = this._searchProjectsService.getProjectsForOrganizations(this.organizationId,' and (funder exact "'+ funderId + '" ) ',1,count,[], this.properties).subscribe(
           data =>
               {
                 projects = data[1];
                  for(let index=0; index < projects.length; index++) {
                      this.countPublSub = this._searchPublicationsService.numOfEntityPublications(projects[index].id, "project", this.properties).subscribe(
                          data =>
                              {
                                  // let index: number = this.organizationInfo.projects.get(funder).indexOf(project);

                                  let url: string;
                                  if(!title) {
                                      //url = this.downloadURLAPI+"projects/"+projects[index].id+"?type=publications&format=csv-special";//&size="+data;
                                      url = this.downloadURLAPI+"?format=csv-special&type=publications&fq=(((oaftype exact result) and (resulttypeid exact publication)) and (relprojectid exact \""+projects[index].id+"\"))"
                                  } else {
                                      //url = this.downloadURLAPI+"projects/"+projects[index].id+"/publications?format=csv-special-notitle";//&size="+data;
                                      url = this.downloadURLAPI+"?format=csv-special-notitle&type=publications&fq=(((oaftype exact result) and (resulttypeid exact publication)) and (relprojectid exact \""+projects[index].id+"\"))"
                                  }

                                  if(data == 0 && (counter > 1 || title)) {   // if no publications for this project
                                      counter--;
                                      response[index] = "";
                                      if(counter == 0) {
                                          for(let i=0; i<count; i++) {
                                              if(response[i] != "") {
                                                  totalResponse += response[i];
                                              }
                                          }
                                          this.closeLoading();

                                          var csvurl = window.URL.createObjectURL(new Blob([totalResponse], { type: 'text/csv' }));
                                          var a = window.document.createElement('a');
                                          window.document.body.appendChild(a);
                                          a.setAttribute('style', 'display: none');
                                          a.href = csvurl;
                                          a.download = filename+".csv";
                                          a.click();
                                          window.URL.revokeObjectURL(csvurl);
                                          a.remove(); // remove the element

                                          //window.open(window.URL.createObjectURL(new Blob([totalResponse], { type: 'text/csv' })));
                                          // if(this.properties.enablePiwikTrack && (typeof document !== 'undefined')){
                                          //   this._piwikService.trackDownload(this.properties, url).subscribe();
                                          // }
                                      }
                                  } else {
                                      title = true;

                                      this.downloadProjectPublSub = this._reportsService.getCSVResponse(url).subscribe(
                                          data =>
                                              {
                                                  counter--;
                                                  response[index] = data;

                                                  if(counter == 0) {
                                                      for(let i=0; i<count; i++) {
                                                          if(response[i] != "") {
                                                              totalResponse += response[i];
                                                          }
                                                      }
                                                      this.closeLoading();

                                                      var csvurl = window.URL.createObjectURL(new Blob([totalResponse], { type: 'text/csv' }));
                                                      var a = window.document.createElement('a');
                                                      window.document.body.appendChild(a);
                                                      a.setAttribute('style', 'display: none');
                                                      a.href = csvurl;
                                                      a.download = filename+".csv";
                                                      a.click();
                                                      window.URL.revokeObjectURL(csvurl);
                                                      a.remove(); // remove the element

                                                      //window.open(window.URL.createObjectURL(new Blob([totalResponse], { type: 'text/csv' })));
                                                      // if(this.properties.enablePiwikTrack && (typeof document !== 'undefined')){
                                                      //   this._piwikService.trackDownload(this.properties, url).subscribe();
                                                      // }
                                                  }
                                              },
                                          err => {
                                            //console.log("Error downloading the file.");
                                            this.handleError("Error downloading file: "+filename, err);

                                            this.closeLoading();
                                            this.confirmOpenCsvError();
                                          }/*,
                                          () => console.log('Completed file download.')*/
                                      );
                                  }
                              },
                          err => {
                            //console.log("Error getting number of publications for project.")
                            this.handleError("Error getting number of publications for project with id: "+projects[index].id, err);
                          });
                  }//);

               },
          err => {
            //console.log("Error getting projects project.");
            this.handleError("Error getting projects for organization with id: "+this.organizationId, err);

            this.closeLoading();
            this.confirmOpenCsvError();
          }
        );

      //  let counter: number = this.organizationInfo.projects.get(funder).length;
       //
      //  for(let project of this.organizationInfo.projects.get(funder)) {
      //       this._searchPublicationsService.numOfEntityPublications(project.id, "projects/").subscribe(
      //           data =>
      //               {
      //                   let index: number = this.organizationInfo.projects.get(funder).indexOf(project);
       //
      //                   let url: string;
      //                   if(index == 0) {
      //                       url = this.downloadURLAPI+"projects/"+project.id+"/publications?format=csv-special&size="+data;
      //                   } else {
      //                       url = this.downloadURLAPI+"projects/"+project.id+"/publications?format=csv-special-notitle&size="+data;
      //                   }
       //
      //                   this._reportsService.getCSVResponse(url).subscribe(
      //                       data =>
      //                           {
      //                               counter--;
       //
      //                               response[index] = data;
       //
      //                               if(counter == 0) {
      //                                   for(let i=0; i<this.organizationInfo.projects.get(funder).length; i++) {
      //                                       totalResponse += response[i]+"\n";
      //                                   }
      //                                   window.open(window.URL.createObjectURL(new Blob([totalResponse], { type: 'text/csv' })));
      //                               }
      //                           },
      //                       error => console.log("Error downloading the file."),
      //                       () => console.log('Completed file download.'));
      //               },
      //           error => console.log("Error getting number of publications for project."));
        // }//);
    }

    private updateDescription(description:string) {
      this._meta.updateTag({content:description},"name='description'");
      this._meta.updateTag({content:description},"property='og:description'");
    }
    private updateTitle(title:string){
      var _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'");
    }

    private openLoading(){
      if(this.loading){
        this.loading.open();
      }
    }
    private closeLoading(){
      if(this.loading){
        this.loading.close();
      }
    }
    private setMessageLoading(message: string){
      if(this.loading){
        this.loading.message = message;
      }
    }

    public confirmOpenApplyAll(funder: string, funderId:string, funderCountPublications:number){
      this.alertApplyAll.cancelButton = true;
      this.alertApplyAll.okButton = true;
      this.alertApplyAll.alertTitle = "CSV FILE";
      this.alertApplyAll.message = "Do you wish to download a CSV file? Note that this process may take a while.";
      this.alertApplyAll.okButtonText = "Yes";
      this.alertApplyAll.cancelButtonText = "No";
      this.alertApplyAll.open();

      this.funder = funder;
      this.funderId = funderId;
      this.funderCountPublications = funderCountPublications;
    }
    public confirmCloseApplyAll(data){
         this.downloadPublicationsFile(this.funder, this.funderId, this.funderCountPublications);
    }

    public confirmOpenCsvError(){
      this.alertCsvError.cancelButton = false;
      this.alertCsvError.okButton = true;
      this.alertCsvError.alertTitle = "ERROR DOWNLOADING CSV FILE";
      this.alertCsvError.message = "There was an error in csv downloading. Please try again later.";
      this.alertCsvError.okButtonText = "OK";
      this.alertCsvError.open();
    }

    encodeURI(input: string): string {
      return StringUtils.URIEncode(input);
    }

    private handleError(message: string, error) {
        console.error("Organizaton Landing Page: "+message, error);
    }
}