refactor to adapters

core/identity/application/use-cases/LoginUseCase.ts

@@ -0,0 +1,29 @@
+import { EmailAddress } from '../../domain/value-objects/EmailAddress';
+import { User } from '../../domain/entities/User';
+import { IAuthRepository } from '../../domain/repositories/IAuthRepository';
+import { IPasswordHashingService } from '../../domain/services/PasswordHashingService';
+
+/**
+ * Application Use Case: LoginUseCase
+ *
+ * Handles user login by verifying credentials.
+ */
+export class LoginUseCase {
+  constructor(
+    private authRepo: IAuthRepository,
+    private passwordService: IPasswordHashingService
+  ) {}
+
+  async execute(email: string, password: string): Promise<User> {
+    const emailVO = EmailAddress.create(email);
+    const user = await this.authRepo.findByEmail(emailVO);
+    if (!user || !user.getPasswordHash()) {
+      throw new Error('Invalid credentials');
+    }
+    const isValid = await this.passwordService.verify(password, user.getPasswordHash()!.value);
+    if (!isValid) {
+      throw new Error('Invalid credentials');
+    }
+    return user;
+  }
+}