feat(auth): Add external authentication (OAuth/OIDC & LDAP) with admin management, UI, and encryption support

ts/services/auth/strategies/strategy.factory.ts

@@ -0,0 +1,28 @@
+/**
+ * Auth Strategy Factory
+ * Creates the appropriate authentication strategy based on provider type
+ */
+
+import type { AuthProvider } from '../../../models/auth.provider.ts';
+import type { CryptoService } from '../../crypto.service.ts';
+import type { IAuthStrategy } from './auth.strategy.interface.ts';
+import { OAuthStrategy } from './oauth.strategy.ts';
+import { LdapStrategy } from './ldap.strategy.ts';
+
+export class AuthStrategyFactory {
+  constructor(private cryptoService: CryptoService) {}
+
+  /**
+   * Create the appropriate strategy for a provider
+   */
+  public create(provider: AuthProvider): IAuthStrategy {
+    switch (provider.type) {
+      case 'oidc':
+        return new OAuthStrategy(provider, this.cryptoService);
+      case 'ldap':
+        return new LdapStrategy(provider, this.cryptoService);
+      default:
+        throw new Error(`Unsupported provider type: ${provider.type}`);
+    }
+  }
+}