Add Health/Recommendations/Request/Webhook controllers

test/app/controllers/HealthController.test.ts

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+import { describe, expect, it } from 'vitest';
+import Fastify from 'fastify';
+import { HealthController } from '../../../src/app/controllers/HealthController';
+import type { AppConfig } from '../../../src/app/config/AppConfig';
+
+describe('HealthController', () => {
+  it('reports status ok with llm/radarr flags from config', async () => {
+    const app = Fastify();
+    new HealthController({ LLM_ENABLED: true, RADARR_ENABLED: false } as AppConfig).register(app);
+
+    const res = await app.inject({ method: 'GET', url: '/health' });
+    expect(res.statusCode).toBe(200);
+    expect(res.json()).toEqual({ status: 'ok', llm: true, radarr: false });
+  });
+});

test/app/controllers/RecommendationsController.test.ts

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+import { describe, expect, it, vi } from 'vitest';
+import Fastify from 'fastify';
+import { RecommendationsController } from '../../../src/app/controllers/RecommendationsController';
+import type { AppConfig } from '../../../src/app/config/AppConfig';
+import type { RecommendationPipeline } from '../../../src/app/pipelines/RecommendationPipeline';
+
+function makeApp(config: Partial<AppConfig>, pipeline: Partial<RecommendationPipeline>) {
+  const app = Fastify();
+  new RecommendationsController(config as AppConfig, pipeline as RecommendationPipeline).register(app);
+  return app;
+}
+
+describe('RecommendationsController', () => {
+  it('GET /recommendations runs the pipeline with the configured count and LLM flag', async () => {
+    const runAsync = vi.fn().mockResolvedValue([{ title: 'Dune', year: 2021, tmdbId: 1, reason: 'r' }]);
+    const app = makeApp({ RECOMMEND_COUNT: 10, LLM_ENABLED: true }, { runAsync } as unknown as RecommendationPipeline);
+
+    const res = await app.inject({ method: 'GET', url: '/recommendations' });
+    expect(res.statusCode).toBe(200);
+    expect(runAsync).toHaveBeenCalledWith({ count: 10, useLlm: true });
+  });
+
+  it('GET /recommendations?count= and force_llm/force_tmdb override config', async () => {
+    const runAsync = vi.fn().mockResolvedValue([]);
+    const app = makeApp({ RECOMMEND_COUNT: 10, LLM_ENABLED: false }, { runAsync } as unknown as RecommendationPipeline);
+
+    await app.inject({ method: 'GET', url: '/recommendations?count=3&force_llm=true' });
+    expect(runAsync).toHaveBeenCalledWith({ count: 3, useLlm: true });
+  });
+
+  it('POST /recommendations/trigger auto-requests via Radarr when enabled', async () => {
+    const recs = [{ title: 'Dune', year: 2021, tmdbId: 1, reason: 'r' }];
+    const runAsync = vi.fn().mockResolvedValue(recs);
+    const autoRequest = vi.fn().mockResolvedValue(undefined);
+    const app = makeApp(
+      { RECOMMEND_COUNT: 10, LLM_ENABLED: true, RADARR_ENABLED: true },
+      { runAsync, autoRequest } as unknown as RecommendationPipeline
+    );
+
+    const res = await app.inject({ method: 'POST', url: '/recommendations/trigger' });
+    expect(res.statusCode).toBe(200);
+    expect(autoRequest).toHaveBeenCalledWith(recs);
+  });
+
+  it('POST /recommendations/search requires LLM to be enabled and a query body', async () => {
+    const app = makeApp({ LLM_ENABLED: false }, {} as RecommendationPipeline);
+    const res = await app.inject({ method: 'POST', url: '/recommendations/search', payload: { query: 'x' } });
+    expect(res.statusCode).toBe(400);
+  });
+
+  it('POST /recommendations/search runs pipeline.searchAsync and returns results', async () => {
+    const searchAsync = vi.fn().mockResolvedValue([{ title: 'Dune', year: 2021, tmdbId: 1, reason: 'r' }]);
+    const app = makeApp(
+      { LLM_ENABLED: true, RECOMMEND_COUNT: 10 },
+      { searchAsync } as unknown as RecommendationPipeline
+    );
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/recommendations/search',
+      payload: { query: 'sci-fi like Blade Runner' },
+    });
+    expect(res.statusCode).toBe(200);
+    expect(searchAsync).toHaveBeenCalledWith('sci-fi like Blade Runner', 10);
+  });
+});

test/app/controllers/RequestController.test.ts

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+import { describe, expect, it, vi } from 'vitest';
+import Fastify from 'fastify';
+import { RequestController } from '../../../src/app/controllers/RequestController';
+import type { AppConfig } from '../../../src/app/config/AppConfig';
+import type { RadarrClient } from '../../../src/app/clients/radarr/RadarrClient';
+
+describe('RequestController', () => {
+  it('returns 400 when Radarr is not enabled', async () => {
+    const app = Fastify();
+    new RequestController({ RADARR_ENABLED: false } as AppConfig, undefined).register(app);
+
+    const res = await app.inject({ method: 'POST', url: '/recommendations/request', payload: { tmdb_id: 1 } });
+    expect(res.statusCode).toBe(400);
+  });
+
+  it('returns 400 when tmdb_id is missing', async () => {
+    const app = Fastify();
+    new RequestController({ RADARR_ENABLED: true } as AppConfig, {} as RadarrClient).register(app);
+
+    const res = await app.inject({ method: 'POST', url: '/recommendations/request', payload: {} });
+    expect(res.statusCode).toBe(400);
+  });
+
+  it('looks up and adds the movie, returning its title', async () => {
+    const radarr = {
+      lookup: vi.fn().mockResolvedValue({ title: 'Dune', tmdbId: 1 }),
+      addMovie: vi.fn().mockResolvedValue(undefined),
+    } as unknown as RadarrClient;
+    const app = Fastify();
+    new RequestController({ RADARR_ENABLED: true } as AppConfig, radarr).register(app);
+
+    const res = await app.inject({ method: 'POST', url: '/recommendations/request', payload: { tmdb_id: 1 } });
+    expect(res.statusCode).toBe(200);
+    expect(res.json()).toEqual({ requested: true, title: 'Dune' });
+  });
+});

test/app/controllers/WebhookController.test.ts

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+import { describe, expect, it, vi } from 'vitest';
+import Fastify from 'fastify';
+import { WebhookController } from '../../../src/app/controllers/WebhookController';
+import type { PromptService } from '../../../src/core/langfuse/PromptService';
+
+describe('WebhookController', () => {
+  it('invalidates a single prompt when promptName is given', async () => {
+    const invalidate = vi.fn();
+    const app = Fastify();
+    new WebhookController({ invalidate } as unknown as PromptService).register(app);
+
+    const res = await app.inject({
+      method: 'POST',
+      url: '/webhooks/langfuse/invalidate',
+      payload: { promptName: 'movie-recommender' },
+    });
+    expect(res.statusCode).toBe(200);
+    expect(invalidate).toHaveBeenCalledWith('movie-recommender');
+    expect(res.json()).toEqual({ invalidated: true, promptName: 'movie-recommender' });
+  });
+
+  it('invalidates the whole cache when no promptName is given', async () => {
+    const invalidate = vi.fn();
+    const app = Fastify();
+    new WebhookController({ invalidate } as unknown as PromptService).register(app);
+
+    const res = await app.inject({ method: 'POST', url: '/webhooks/langfuse/invalidate', payload: {} });
+    expect(invalidate).toHaveBeenCalledWith(undefined);
+    expect(res.json()).toEqual({ invalidated: true, promptName: 'all' });
+  });
+});