fix(server): avoid server error for invalid email data type (#10978)

* fix(server): avoid server error for invalid email data type

* add e2e test

* fix e2e

server/src/dtos/auth.dto.ts

@@ -5,6 +5,7 @@ import { APIKeyEntity } from 'src/entities/api-key.entity';
 import { SessionEntity } from 'src/entities/session.entity';
 import { SharedLinkEntity } from 'src/entities/shared-link.entity';
 import { UserEntity } from 'src/entities/user.entity';
+import { toEmail } from 'src/validation';
 
 export enum ImmichCookie {
   ACCESS_TOKEN = 'immich_access_token',
@@ -41,7 +42,7 @@ export class AuthDto {
 
 export class LoginCredentialDto {
   @IsEmail({ require_tld: false })
-  @Transform(({ value }) => value?.toLowerCase())
+  @Transform(toEmail)
   @IsNotEmpty()
   @ApiProperty({ example: 'testuser@email.com' })
   email!: string;

server/src/dtos/user.dto.spec.ts

@@ -38,6 +38,22 @@ describe('create user DTO', () => {
     expect(errors).toHaveLength(0);
   });
 
+  it('validates invalid email type', async () => {
+    let dto = plainToInstance(UserAdminCreateDto, {
+      email: [],
+      password: 'some password',
+      name: 'some name',
+    });
+    expect(await validate(dto)).toHaveLength(1);
+
+    dto = plainToInstance(UserAdminCreateDto, {
+      email: {},
+      password: 'some password',
+      name: 'some name',
+    });
+    expect(await validate(dto)).toHaveLength(1);
+  });
+
   it('should allow emails without a tld', async () => {
     const someEmail = 'test@test';