reset password

src/app/modules/user/password/password.component.html

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+<app-card>
+  <div [formGroup]="form" class="form">
+    <mat-form-field appearance="outline">
+      <mat-label>E-Mail Addresse</mat-label>
+      <input (keyup.enter)="onResetPassword()" formControlName="user" matInput>
+    </mat-form-field>
+
+    <app-button-row>
+      <button (click)="onResetPassword()" mat-button>neues Passwort anfordern</button>
+      <p *ngIf="errorMessage" class="error">{{errorMessage|authMessage}}</p>
+    </app-button-row>
+
+  </div>
+
+</app-card>

src/app/modules/user/password/password.component.less

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+.form {
+  display: grid;
+}
+
+p.error {
+  margin: 8px 10px;
+  color: darkred;
+}

src/app/modules/user/password/password.component.spec.ts

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+import {async, ComponentFixture, TestBed} from '@angular/core/testing';
+
+import {PasswordComponent} from './password.component';
+
+describe('PasswordComponent', () => {
+  let component: PasswordComponent;
+  let fixture: ComponentFixture<PasswordComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [PasswordComponent]
+    })
+      .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(PasswordComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

src/app/modules/user/password/password.component.ts

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+import {Component, OnInit} from '@angular/core';
+import {FormControl, FormGroup, Validators} from '@angular/forms';
+import {Router} from '@angular/router';
+import {UserService} from '../../../services/user.service';
+
+@Component({
+  selector: 'app-password',
+  templateUrl: './password.component.html',
+  styleUrls: ['./password.component.less']
+})
+export class PasswordComponent implements OnInit {
+  public form: FormGroup;
+  public errorMessage: string;
+
+  constructor(public userService: UserService, private router: Router) {
+  }
+
+  public ngOnInit(): void {
+    this.form = new FormGroup({
+      user: new FormControl(null, [Validators.required, Validators.email])
+    });
+  }
+
+  public async onResetPassword() {
+    this.form.updateValueAndValidity();
+    if (this.form.valid) {
+      try {
+        await this.userService.changePassword(this.form.value.user);
+        await this.router.navigateByUrl('/user/password-send');
+      } catch (ex) {
+        this.errorMessage = ex.code;
+      }
+    }
+  }
+
+}