import { Injectable, FactoryProvider } from '@angular/core';
import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';

import { Observable } from 'rxjs';

import { AuthService as MawAuthService } from './maw-auth.service';
import { environment } from '../../environments/environment';

const bomConfig = environment.bomConfig;

@Injectable()
export class AuthService {
  constructor(private http: HttpClient) {}

  /**
   * Login and authenticate user then set api token on success
   * @param email
   * @param password
   */
  public login(username: string, password: string): Observable<any> {
    const body = new HttpParams()
      .set('username', username)
      .set('password', password);

    const headers = new HttpHeaders().set(
      'Content-Type',
      'application/x-www-form-urlencoded'
    );

    return this.http.post('https://qa.arrow.com/login/loginlite', body, {
      headers
    });
  }
}

export function authFactory(http: HttpClient) {
  if (bomConfig.target === 'myarrow') {
    return new MawAuthService(http);
  }

  return new AuthService(http);
}

export const AuthProvider: FactoryProvider = {
  provide: AuthService,
  useFactory: authFactory,
  deps: [HttpClient]
};