import {EventEmitter, Injectable, OnDestroy, OnInit} from '@angular/core';
import { NotificationService } from '@progress/kendo-angular-notification';
import {HttpClient, HttpEvent, HttpHandler, HttpInterceptor, HttpRequest} from '@angular/common/http';
import {apiV1LoginResponse} from '../models/api-v1-login-response';
import {Observable} from 'rxjs';
import {AppComponent} from '../app.component';
import {Router} from '@angular/router';

@Injectable()
export class AuthService {

    public apiUrl = 'https://svr2021.lawipac.com:8080/api/v1/';
    public apiWsUrl = 'wss://svr2021.lawipac.com:8080/api/v1/ws';
    public loggedIn = new apiV1LoginResponse(false, '', '',0 );
    loginSuccess = new EventEmitter <apiV1LoginResponse>();

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


  // tslint:disable-next-line:typedef
    public AutoLogin() {
      const sfm: apiV1LoginResponse = JSON.parse(localStorage.getItem('sfm'));
      if (!sfm) {
        console.log('no auto login');
        return;
      }
      this.loggedIn = new apiV1LoginResponse(
        sfm.login,
        sfm.machineId,
        sfm.session,
        sfm.sessionExpire
      );
      this.loginSuccess.emit(this.loggedIn);
      //console.log ( 'auto login emit events',  this.loggedIn);
    }

  // tslint:disable-next-line:typedef
    isAuthenticated()  {
      return this.loggedIn.login;
    }

    allowEditLoan(): boolean{
      return true;
    }

  // tslint:disable-next-line:typedef
    login(email: string, password: string) {

      this.http.post<apiV1LoginResponse>(this.apiUrl + 'login', {u: email, p: password}).subscribe(
        responseData => {
           this.loggedIn.session = responseData['Biukop-Session'];
           this.loggedIn.login = responseData.login;
           this.loggedIn.machineId = responseData['Biukop-Mid'];
           this.loggedIn.sessionExpire = responseData.sessionExpire;
           localStorage.setItem('sfm', JSON.stringify(this.loggedIn));
           localStorage.setItem('mid', this.loggedIn.machineId);
           this.loginSuccess.emit(responseData);
         },
        error => {
          const fail = new apiV1LoginResponse(false,'','',0);
          this.loggedIn = fail;
          console.log('login error', error);
          this.loginSuccess.emit(this.loggedIn);
        }

      );
    }

  // tslint:disable-next-line:typedef
    logout() {
       this.loggedIn = new apiV1LoginResponse(false,'','',0);
       localStorage.removeItem('sfm');
       this.loginSuccess.emit(this.loggedIn);
       this.router.navigate(['/login']).then(r =>{
         console.log('prepare to log back in');
       } );
       this.http.post(`${this.apiUrl}logout`, '').subscribe(
          resp => {
            console.log('successfully logout from server');
          },
          event => {
            console.log('error logout from server', event);
          }
        );
    }


  // tslint:disable-next-line:variable-name
    public getUrl(key: string): string{
      const s = this.apiUrl + key;
      const kvPair: {key: string, value: string}[] = [
        {key: 'login',  value: this.apiUrl + 'login'},
        {key: 'logout', value: this.apiUrl + 'logout'}
      ];

      kvPair.forEach( item => {
          if  ( item.key === key) {
            return item.value;
          }
      });

      // not found if arrive here
      return s;
    }}