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 { AuthConnstants } from '../config/auth-constants';
import { HttpClient } from '@angular/common/http';
import { User } from '../models/user.model';
import { environment } from 'src/environments/environment';

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

  

  constructor(
    private storageService: StorageService, 
    private router: Router,
    private http: HttpClient
    ) { }

    public ValidatedUser:User;

    async login(user: User): Promise<boolean> {
      user.domainName = environment.domain;
      user.BasicAuthKey = 'Basic ' + btoa(user.domainName + '\\' + user.username + ':' + user.password); //conversão em base64 das credenciais inseridas

      const options = { headers: {'Authorization': user.BasicAuthKey }};
      const service = environment.apiURL + "userauthentication/GetValidateAuth";
      
      let result: boolean | PromiseLike<boolean>;

      try {
        result = await this.http.get<boolean>(service, options).toPromise();
      } catch(e) {
        result = false;
      }

      if (result)
        {
          this.ValidatedUser = user;
        } 

      return result;
    }

    logout(){
      this.ValidatedUser = null;
    }
}