openaire-library/connect/communities/communities.service.ts

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import {Injectable} from '@angular/core';
import {HttpClient} from "@angular/common/http";
import {CommunityInfo} from '../community/communityInfo';
import {EnvProperties} from '../../utils/properties/env-properties';
import {BehaviorSubject, Subscriber} from "rxjs";
import {map} from "rxjs/operators";
@Injectable()
export class CommunitiesService {
public communities: BehaviorSubject<CommunityInfo[]> = null;
constructor(private http: HttpClient) {
this.communities = new BehaviorSubject([]);
}
sub;
ngOnDestroy() {
this.clearSubscriptions();
}
clearSubscriptions(){
if (this.sub instanceof Subscriber) {
this.sub.unsubscribe();
}
}
updateCommunities(properties: EnvProperties, url: string) {
this.sub = this.getCommunities(properties, url).subscribe(res => {
this.communities.next(res);
}, error => {
this.communities.error(error);
})
}
getCommunitiesState() {
return this.communities.asObservable();
}
getCommunities(properties: EnvProperties, url: string) {
return this.http.get((properties.useCache) ? (properties.cacheUrl + encodeURIComponent(url)) : url)
.pipe(map(res => this.parseCommunities(res)));
}
parseCommunities(data: any): CommunityInfo[] {
const communities: CommunityInfo[] = [];
const length = Array.isArray(data) ? data.length : 1;
for (let i = 0; i < length; i++) {
const resData = Array.isArray(data) ? data[i] : data;
const result: CommunityInfo = new CommunityInfo();
result['title'] = resData.name;
result['shortTitle'] = resData.shortName;
result['communityId'] = resData.id;
result['queryId'] = resData.queryId;
result['logoUrl'] = resData.logoUrl;
result['description'] = resData.description;
result['date'] = resData.creationDate;
result['status'] = 'all';
if (resData.hasOwnProperty('status')) {
result['status'] = resData.status;
const status = ['all', 'hidden', 'manager'];
if (status.indexOf(result['status']) === -1) {
result['status'] = 'hidden';
}
}
if (resData.type != null) {
result['type'] = resData.type;
}
if (resData.managers != null) {
if (result['managers'] === undefined) {
result['managers'] = new Array<string>();
}
const managers = resData.managers;
const lengthManagers = Array.isArray(managers) ? managers.length : 1;
for (let j = 0; j < lengthManagers; j++) {
const manager = Array.isArray(managers) ? managers[j] : managers;
result.managers[j] = manager;
}
}
if (resData.subjects != null) {
if (result['subjects'] === undefined) {
result['subjects'] = new Array<string>();
}
const subjects = resData.subjects;
const lengthSubjects = Array.isArray(subjects) ? subjects.length : 1;
for (let j = 0; j < lengthSubjects; j++) {
const subject = Array.isArray(subjects) ? subjects[i] : subjects;
result.subjects[j] = subject;
}
}
if (result['type'] === 'community' || result['type'] === 'ri') {
communities.push(result);
}
}
return communities;
}
}