import {Component} from '@angular/core';
import {EnvProperties} from '../openaireLibrary/utils/properties/env-properties';
import {ActivatedRoute, Router} from "@angular/router";
import {CommunityService} from "../openaireLibrary/connect/community/community.service";
import {HelperService} from "../openaireLibrary/utils/helper/helper.service";
import {Meta, Title} from "@angular/platform-browser";
import {SEOService} from "../openaireLibrary/sharedComponents/SEO/SEO.service";
import {PiwikService} from "../openaireLibrary/utils/piwik/piwik.service";
import {StringUtils} from "../openaireLibrary/utils/string-utils.class";
import {Breadcrumb} from "../openaireLibrary/utils/breadcrumbs/breadcrumbs.component";
import {properties} from "../../environments/environment";
import {Subscriber, Subscription} from "rxjs";
@Component({
selector: 'subjects',
template: `
Subjects
-
{{groupedAllSubjects[indexAll].group}}
-
{{groupedSubjects[indexSubjects]?.group}}
-
{{groupedSdg[indexSdg].group}}
-
{{groupedFos[indexFos].group}}
`
})
export class SubjectsComponent {
properties: EnvProperties = properties;
breadcrumbs: Breadcrumb[] = [{name: 'Home', route: '/'}, {name: 'About - Subjects'}];
pageContents = null;
divContents = null;
url: string = null;
pageTitle: string = "Subjects";
communityId = null;
showLoading = true;
subs: Subscription[] = [];
displayedAllSubjects = [];
displayedSubjects = [];
displayedSdg = [];
displayedFos = [];
groupedAllSubjects = [];
groupedSubjects = [];
groupedSdg = [];
groupedFos = [];
subjectsColumns = [];
subjectsLimit: number = 6;
maxCharacters: number = 25;
activeTab: 'all' | 'freeText' | 'sdg' | 'fos' = 'all';
indexAll: number = 0;
indexSubjects: number = 0;
indexSdg: number = 0;
indexFos: number = 0;
viewAll: boolean = false;
constructor(private route: ActivatedRoute,
private communityService: CommunityService,
private _router: Router,
private helper: HelperService,
private _meta: Meta,
private _title: Title,
private seoService: SEOService,
private _piwikService: PiwikService) {
}
ngOnInit() {
this.showLoading = true;
this.url = this.properties.domain + this._router.url;
this.seoService.createLinkForCanonicalURL(this.url);
this.updateUrl(this.url);
this.updateTitle(this.pageTitle);
this.updateDescription("OpenAIRE - Connect, Community Gateway, research community");
this.subs.push(this.communityService.getCommunityAsObservable().subscribe(community => {
if (community) {
this.communityId = community.communityId;
this.subs.push(this._piwikService.trackView(this.properties, this.pageTitle).subscribe());
this.getPageContents();
this.displayedSubjects = community.subjects;
this.displayedSdg = community.sdg;
this.displayedFos = community.fos;
this.displayedSubjects.forEach(element => {
this.displayedAllSubjects.push({value: element, type: 'resultsubject'});
});
this.displayedSdg.forEach(element => {
this.displayedAllSubjects.push({value: element, type: 'sdg'});
});
this.displayedFos.forEach(element => {
this.displayedAllSubjects.push({value: element, type: 'fos'});
});
this.groupSubjects(this.displayedAllSubjects, 'all');
this.showLoading = false;
}
}));
}
createParams(param) {
return StringUtils.URIEncode(param);
}
ngOnDestroy() {
for (let sub of this.subs) {
if (sub instanceof Subscriber) {
sub.unsubscribe();
}
}
}
private getPageContents() {
this.subs.push(this.helper.getPageHelpContents(this.properties, this.communityId, this._router.url).subscribe(contents => {
this.pageContents = contents;
}));
}
public groupSubjects(subjects: string[], type: string) {
if(subjects.length === 0) {
return [];
}
if(type === 'all') {
subjects.sort((a, b) => a['value'].localeCompare(b['value']));
this.indexAll = 0;
this.activeTab = 'all';
this.groupedAllSubjects = Object.values(
subjects.reduce((acc, subject) => {
let firstLetter = subject['value'][0].toLocaleUpperCase();
if(!acc[firstLetter]) {
acc[firstLetter] = {group: firstLetter, data: [subject]};
} else {
acc[firstLetter].data.push(subject);
}
return acc;
},{})
)
if(subjects.length > 1) {
this.groupedAllSubjects.unshift({group: 'All', data: subjects});
}
}
if(type === 'freeText') {
subjects.sort((a, b) => a.localeCompare(b));
this.indexSubjects = 0;
this.activeTab = 'freeText';
this.groupedSubjects = Object.values(
subjects.reduce((acc, subject) => {
let firstLetter = subject[0].toLocaleUpperCase();
if(!acc[firstLetter]) {
acc[firstLetter] = {group: firstLetter, data: [subject]};
} else {
acc[firstLetter].data.push(subject);
}
return acc;
},{})
)
if(subjects.length > 1) {
this.groupedSubjects.unshift({group: 'All', data: subjects});
}
}
if(type === 'sdg') {
subjects.sort((a, b) => a.localeCompare(b));
this.indexSdg = 0;
this.activeTab = 'sdg';
this.groupedSdg = Object.values(
subjects.reduce((acc, subject) => {
let firstLetter = subject[0].toLocaleUpperCase();
if(!acc[firstLetter]) {
acc[firstLetter] = {group: firstLetter, data: [subject]};
} else {
acc[firstLetter].data.push(subject);
}
return acc;
},{})
)
if(subjects.length > 1) {
this.groupedSdg.unshift({group: 'All', data: subjects});
}
}
if(type === 'fos') {
subjects.sort((a, b) => a.localeCompare(b));
this.indexFos = 0;
this.activeTab = 'fos';
this.groupedFos = Object.values(
subjects.reduce((acc, subject) => {
let key = subject.substring(0,2).toLocaleUpperCase();
if(!acc[key]) {
acc[key] = {group: key, data: [subject]};
} else {
acc[key].data.push(subject);
}
return acc;
},{})
)
if(subjects.length > 1) {
this.groupedFos.unshift({group: 'All', data: subjects});
}
}
}
public changeDisplayedSubjects(i, group) {
this.subjectsColumns = [];
if(this.activeTab === 'all') {
this.indexAll = i;
} else if(this.activeTab === 'freeText') {
this.indexSubjects = i;
} else if(this.activeTab === 'sdg') {
this.indexSdg = i;
} else if(this.activeTab === 'fos') {
this.indexFos = i;
}
if(group.data.length > this.subjectsLimit && group.group != 'All') {
this.divideSubjects(group);
}
}
public divideSubjects(group) {
let columns = [];
for(let i = 0; i < (group.data.length / this.subjectsLimit); i++) {
columns.push(group.data.slice(i * this.subjectsLimit, ((i + 1) * this.subjectsLimit)));
}
this.subjectsColumns = columns;
}
private updateDescription(description: string) {
this._meta.updateTag({content: description}, "name='description'");
this._meta.updateTag({content: description}, "property='og:description'");
}
private updateTitle(title: string) {
var _title = ((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'");
}
}