refactor to adapters

core/identity/domain/services/PasswordHashingService.ts

@@ -0,0 +1,26 @@
+import { PasswordHash } from '../value-objects/PasswordHash';
+
+/**
+ * Domain Service: PasswordHashingService
+ *
+ * Service for password hashing and verification.
+ */
+export interface IPasswordHashingService {
+  hash(plain: string): Promise<string>;
+  verify(plain: string, hash: string): Promise<boolean>;
+}
+
+/**
+ * Implementation using bcrypt via PasswordHash VO.
+ */
+export class PasswordHashingService implements IPasswordHashingService {
+  async hash(plain: string): Promise<string> {
+    const passwordHash = await PasswordHash.create(plain);
+    return passwordHash.value;
+  }
+
+  async verify(plain: string, hash: string): Promise<boolean> {
+    const passwordHash = PasswordHash.fromHash(hash);
+    return passwordHash.verify(plain);
+  }
+}