// tools/generate-tests/generators/microservices/ts-scaffold.ts — SPEC-058b Section E
// Builds TypeScript/vitest scaffold content for microservices tests.
export function buildTsMicroservicesTest(title, broker, mesh) {
    const brokerSection = broker
        ? `
  describe('Message broker (${broker})', () => {
    it('guarantees message delivery to consumer', async () => {
      // const producer = createProducer({ broker: '${broker}' });
      // await producer.send({ topic: 'orders', value: { id: 1 } });
      // const received = await consumer.waitForMessage('orders', 5000);
      // expect(received.value).toMatchObject({ id: 1 });
      expect(true).toBe(true); // Replace with real broker assertion
    });

    it('routes failed messages to dead letter queue', async () => {
      // Simulate processing failure → verify message lands in DLQ
      expect(true).toBe(true);
    });

    it('preserves message ordering within partition', async () => {
      expect(true).toBe(true);
    });

    it('handles consumer group rebalancing gracefully', async () => {
      expect(true).toBe(true);
    });
  });
`
        : '';
    const meshSection = mesh
        ? `
  describe('Service mesh (${mesh})', () => {
    it('routes traffic according to configured rules', async () => {
      expect(true).toBe(true);
    });

    it('verifies mTLS certificates between services', async () => {
      expect(true).toBe(true);
    });

    it('splits traffic correctly between versions', async () => {
      expect(true).toBe(true);
    });
  });
`
        : '';
    return `// Microservices & Distributed Systems tests for: ${title}
// Generated by Planu SDD MCP Server (SPEC-058b)
import { describe, it, expect } from 'vitest';

describe('${title} — Microservices Tests', () => {
  describe('Contract testing (Pact)', () => {
    it('consumer contract matches provider API', async () => {
      // const interaction = new PactInteraction()
      //   .uponReceiving('a request for user')
      //   .withRequest({ method: 'GET', path: '/api/users/1' })
      //   .willRespondWith({ status: 200, body: { id: 1, name: 'Test' } });
      // await provider.verify(interaction);
      expect(true).toBe(true); // Replace with real Pact assertion
    });
  });

  describe('Circuit breaker', () => {
    it('opens after consecutive failures', async () => {
      // Simulate 5 failures → verify circuit is open
      expect(true).toBe(true);
    });

    it('transitions from open to half-open after timeout', async () => {
      expect(true).toBe(true);
    });

    it('closes after successful request in half-open state', async () => {
      expect(true).toBe(true);
    });

    it('returns fallback response when circuit is open', async () => {
      expect(true).toBe(true);
    });
  });

  describe('Retry with backoff', () => {
    it('retries with exponential backoff on transient failure', async () => {
      // Verify delays: 100ms, 200ms, 400ms (exponential)
      expect(true).toBe(true);
    });

    it('respects max retry limit', async () => {
      expect(true).toBe(true);
    });

    it('applies jitter to avoid thundering herd', async () => {
      expect(true).toBe(true);
    });

    it('uses idempotency key to prevent duplicate processing', async () => {
      expect(true).toBe(true);
    });
  });

  describe('Health check endpoints', () => {
    it('GET /healthz returns 200 when service is alive', async () => {
      // const res = await request(app).get('/healthz');
      // expect(res.status).toBe(200);
      expect(true).toBe(true);
    });

    it('GET /readyz returns 200 when dependencies are ready', async () => {
      expect(true).toBe(true);
    });

    it('GET /readyz returns 503 when a dependency is down', async () => {
      expect(true).toBe(true);
    });

    it('startup probe succeeds within timeout', async () => {
      expect(true).toBe(true);
    });
  });
${brokerSection}${meshSection}});
`;
}
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