client/src/app/login/login.component.ts

   1 import { Component, OnInit } from '@angular/core';
   2 import { FormBuilder, FormGroup, Validators } from '@angular/forms';
   3 import { Router } from '@angular/router';
   4
   5 import { AuthService, FormReactive } from '../shared';
   6
   7 @Component({
   8   selector: 'my-login',
   9   template: require('./login.component.html')
  10 })
  11
  12 export class LoginComponent extends FormReactive implements OnInit {
  13   error: string = null;
  14
  15   form: FormGroup;
  16   formErrors = {
  17     'username': '',
  18     'password': ''
  19   };
  20   validationMessages = {
  21     'username': {
  22       'required': 'Username is required.',
  23     },
  24     'password': {
  25       'required': 'Password is required.'
  26     }
  27   };
  28
  29   constructor(
  30     private authService: AuthService,
  31     private formBuilder: FormBuilder,
  32     private router: Router
  33   ) {
  34     super();
  35   }
  36
  37   buildForm() {
  38     this.form = this.formBuilder.group({
  39       username: [ '', Validators.required ],
  40       password: [ '', Validators.required ],
  41     });
  42
  43     this.form.valueChanges.subscribe(data => this.onValueChanged(data));
  44   }
  45
  46   ngOnInit() {
  47     this.buildForm();
  48   }
  49
  50   login() {
  51     this.error = null;
  52
  53     const { username, password } = this.form.value;
  54
  55     this.authService.login(username, password).subscribe(
  56       result => this.router.navigate(['/videos/list']),
  57
  58       error => {
  59         console.error(error.json);
  60
  61         if (error.json.error === 'invalid_grant') {
  62           this.error = 'Credentials are invalid.';
  63         } else {
  64           this.error = `${error.json.error}: ${error.json.error_description}`;
  65         }
  66       }
  67     );
  68   }
  69 }