import { Injectable } from '@angular/core'; import { HttpClient } from '@angular/common/http'; import { delay, Observable, shareReplay } from 'rxjs'; @Injectable({ providedIn: 'root' }) export class UserService { constructor(private http: HttpClient) {} getUsers(): Observable { return this.http.get('https://jsonplaceholder.typicode.com/users').pipe( delay(1000) ) } getUser(id: number): Observable { return this.http.get(`https://jsonplaceholder.typicode.com/users/${id}`).pipe( delay(1000) ) } getTodos(userId: number): Observable { return this.http.get(`https://jsonplaceholder.typicode.com/todos?userId=${userId}`).pipe( delay(1000) ) } getTodo(id: number): Observable { return this.http.get(`https://jsonplaceholder.typicode.com/todos/${id}`).pipe( delay(1000) ) } }