import {Injectable} from '@angular/core';
import {Http, Response} from '@angular/http';
import 'rxjs/add/operator/map';

import {AppConfig} from '../../app.config';
import {AwardingService} from '../army-management/awarding.service';
import {PromotionService} from '../army-management/promotion.service';
import {CookieService} from 'ngx-cookie-service';

@Injectable()
export class LoginService {
  constructor(private http: Http,
              private config: AppConfig,
              private cookieService: CookieService,
              private awardingService: AwardingService,
              private promotionService: PromotionService) {
  }

  login(username: string, password: string) {
    return this.http.post(this.config.apiAuthenticationPath, {username: username, password: password})
               .map((response: Response) => {
                 // login successful if there's a jwt token in the response
                 const user = response.json();
                 if (user && user.token) {
                   // store user details and jwt token in cookie
                   this.cookieService.set('currentUser', JSON.stringify(user));
                   if (user.permission >= 2) {
                     const fraction = user.squad.fraction;
                     this.awardingService.checkUnprocessedAwards(fraction);
                     this.promotionService.checkUnconfirmedPromotions(fraction);
                   }
                 }
               });
  }

  signUp(username: string, password: string, secret: string) {
    return this.http.post(this.config.apiSignupPath, {username: username, password: password, secret: secret})
               .map((response: Response) => {
               });
  }

  logout() {
    this.cookieService.delete('currentUser');
  }

  isLoggedIn() {
    return !!this.cookieService.get('currentUser');
  }

  hasPermission(level: number) {
    return this.isLoggedIn() && this.getCurrentUser().permission >= level;
  }

  getCurrentUser() {
    return JSON.parse(this.cookieService.get('currentUser'));
  }

  hasSquad() {
    return this.getCurrentUser().squad != null;
  }

}