#597: added email validator to reset form, show hint if the email isn…

app/webFrontend/src/app/auth/reset/reset.component.ts

@@ -7,6 +7,7 @@ import {MatSnackBar} from '@angular/material';
 import {ActivatedRoute, Router} from '@angular/router';
 import {isNullOrUndefined} from 'util';
 import {TitleService} from '../../shared/services/title.service';
+import {emailValidator} from '../../shared/validators/validators';
 
 @Component({
   templateUrl: './reset.component.html',
@@ -43,6 +44,11 @@ export class ResetComponent implements OnInit {
   }
 
   requestReset() {
+    if (!this.resetForm.valid) {
+      this.snackBar.open('The email address you entered is not valid.', 'Dismiss');
+      return;
+    }
+
     this.showProgress.toggleLoadingGlobal(true);
     this.loading = true;
     this.authenticationService.requestReset(this.resetForm.value.email.replace(/\s/g, '').toLowerCase())
@@ -80,7 +86,7 @@ export class ResetComponent implements OnInit {
       this.resetForm = this.formBuilder.group({});
     } else {
       this.resetForm = this.formBuilder.group({
-        email: ['', Validators.required]
+        email: ['', emailValidator ]
       });
     }
   }

app/webFrontend/src/app/shared/validators/validators.ts

@@ -1,4 +1,4 @@
-import {FormGroup} from '@angular/forms';
+import {FormControl, FormGroup} from '@angular/forms';
 
 export function matchPasswords(passwordKey: string, confirmPasswordKey: string) {
   return (group: FormGroup): { [key: string]: any } => {
@@ -12,3 +12,21 @@ export function matchPasswords(passwordKey: string, confirmPasswordKey: string)
     }
   };
 }
+
+/**
+ * A custom email validator which, in comparison to the default angular email validator,
+ * also checks if the email address has a top-level domain.
+ *
+ * @param {FormControl} formControl
+ * @returns {{emailValidator: {valid: boolean}}}
+ */
+export function emailValidator(formControl: FormControl) {
+  // Email Regex from: http://emailregex.com/
+  // tslint:disable-next-line:max-line-length
+  const EMAIL_REGEX = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
+  return EMAIL_REGEX.test(formControl.value) ? null : {
+    emailValidator: {
+      valid: false
+    }
+  };
+}