first commit

src/app/_api/user/user.service.spec.ts

@@ -0,0 +1,12 @@
+import { TestBed } from '@angular/core/testing';
+
+import { UserService } from './user.service';
+
+describe('UserService', () => {
+  beforeEach(() => TestBed.configureTestingModule({}));
+
+  it('should be created', () => {
+    const service: UserService = TestBed.get(UserService);
+    expect(service).toBeTruthy();
+  });
+});

src/app/_api/user/user.service.ts

@@ -0,0 +1,27 @@
+import { Injectable } from '@angular/core';
+import { AngularFirestore } from '@angular/fire/compat/firestore';
+import firebase from 'firebase/compat/app';
+import { Observable } from 'rxjs';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class UserService {
+  ref = firebase.firestore().collection('users');
+
+  constructor(private firestore: AngularFirestore) {
+  }
+
+  getUsers() {
+    return this.firestore.collection('users').snapshotChanges();
+  }
+
+  getCurrentUser(userId): Observable<any> {
+    return this.firestore.collection('users', ref => ref.where('uid', '==', userId)).snapshotChanges();
+  }
+
+  createUser(user) {
+    return this.ref.add(user);
+  }
+
+}