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posts.service.ts
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/
posts.service.ts
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import { HttpClient, HttpParams } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable, map, filter, BehaviorSubject } from 'rxjs';
const BASE_URL = '/api/posts';
@Injectable({
providedIn: 'root',
})
export class PostsService {
private filter = new BehaviorSubject<boolean>(false);
constructor(private http: HttpClient) { }
getPosts(page: number): Observable<any> {
const params = new HttpParams()
.set('page', page)
.set('filter', this.filter.getValue());
return this.http.get(BASE_URL, { params }) as Observable<any>;
}
getUserPosts(page: number, username: string) {
const params = new HttpParams().set('page', page).set('username', username);
return this.http.get(BASE_URL, { params }) as Observable<any>;
}
upvotePost(id: number) {
return this.http.put(BASE_URL + '/upvotes/' + id, null);
}
downvotePost(id?: number) {
return this.http.put(BASE_URL + '/downvotes/' + id, null);
}
getPostById(id: number) {
return this.http.get(BASE_URL + '/' + id);
}
setFilter(filter: boolean) {
this.filter.next(filter);
}
getFilter() {
return this.filter.asObservable();
}
downloadImage(id: number): String {
return BASE_URL + '/images/' + id;
}
}