refactor to adapters

testing/fakes/identity/IracingDemoIdentityProviderAdapter.ts

@@ -0,0 +1,50 @@
+import { randomUUID } from 'crypto';
+import { createStaticRacingSeed } from '@gridpilot/testing-support';
+import type { IdentityProviderPort } from '../../application/ports/IdentityProviderPort';
+import type { StartAuthCommandDTO } from '../../application/dto/StartAuthCommandDTO';
+import type { AuthCallbackCommandDTO } from '../../application/dto/AuthCallbackCommandDTO';
+import type { AuthenticatedUserDTO } from '../../application/dto/AuthenticatedUserDTO';
+
+export class IracingDemoIdentityProviderAdapter implements IdentityProviderPort {
+  private readonly seedDriverId: string;
+
+  constructor() {
+    const seed = createStaticRacingSeed(42);
+    this.seedDriverId = seed.drivers[0]?.id ?? 'driver-1';
+  }
+
+  async startAuth(command: StartAuthCommandDTO): Promise<{ redirectUrl: string; state: string }> {
+    const state = randomUUID();
+
+    const params = new URLSearchParams();
+    params.set('code', 'dummy-code');
+    params.set('state', state);
+    if (command.returnTo) {
+      params.set('returnTo', command.returnTo);
+    }
+
+    return {
+      redirectUrl: `/auth/iracing/callback?${params.toString()}`,
+      state,
+    };
+  }
+
+  async completeAuth(command: AuthCallbackCommandDTO): Promise<AuthenticatedUserDTO> {
+    if (!command.code) {
+      throw new Error('Missing auth code');
+    }
+    if (!command.state) {
+      throw new Error('Missing auth state');
+    }
+
+    const user: AuthenticatedUserDTO = {
+      id: 'demo-user',
+      displayName: 'GridPilot Demo Driver',
+      iracingCustomerId: '000000',
+      primaryDriverId: this.seedDriverId,
+      avatarUrl: `/api/avatar/${this.seedDriverId}`,
+    };
+
+    return user;
+  }
+}