doneit-web/src/app/services/auth.service.ts

import { Injectable } from '@angular/core';
import { StorageService } from './storage.service';
import { HttpService } from './http.service';
import { Router } from '@angular/router';
import { Observable } from 'rxjs';
import { AuthConnstants } from '../config/auth-constants';

@Injectable({
  providedIn: 'root'
})
export class AuthService {

  constructor(
    private httpService: HttpService, 
    private storageService: StorageService, 
    private router: Router
    ) { }

    login(postData: any): Observable<any> {
      return this.httpService.post('login', postData);
      }

      signup(postData: any): Observable<any> {
        return this.httpService.post('signup', postData);
        }

    logout(){
      this.storageService.removeStorageItem(AuthConnstants.AUTH).then(res =>{
        this.router.navigate([''])
      })

    }
}