import { workerConnectionOptions, webhookWorkerConcurrency } from './redis-connection';

describe('workerConnectionOptions (webhook Worker connection)', () => {
  const ORIGINAL_ENV = process.env;

  afterEach(() => {
    process.env = ORIGINAL_ENV;
  });

  it('does NOT disable the offline queue — the Worker must tolerate a brief Redis reconnect', () => {
    // The producer sets enableOfflineQueue:false for fast-fail; the Worker must keep ioredis's default
    // (true). Asserting it is absent guards against the regression where the Worker inherited the
    // producer-only fast-fail from the shared connection and threw "Stream isn't writeable" on a blip.
    const opts = workerConnectionOptions() as unknown as Record<string, unknown>;
    expect(opts.enableOfflineQueue).toBeUndefined();
  });

  it('reads host/port/username/password/connectTimeout from env with safe defaults', () => {
    process.env = { ...ORIGINAL_ENV };
    delete process.env.REDIS_HOST;
    delete process.env.REDIS_PORT;
    delete process.env.REDIS_USERNAME;
    delete process.env.REDIS_PASSWORD;
    delete process.env.REDIS_CONNECT_TIMEOUT_MS;
    expect(workerConnectionOptions()).toEqual({
      host: 'localhost',
      port: 6379,
      username: undefined,
      password: undefined,
      connectTimeout: 5000,
    });

    process.env.REDIS_HOST = 'redis.internal';
    process.env.REDIS_PORT = '6380';
    process.env.REDIS_USERNAME = 'myuser';
    process.env.REDIS_PASSWORD = 'secret';
    process.env.REDIS_CONNECT_TIMEOUT_MS = '1234';
    expect(workerConnectionOptions()).toEqual({
      host: 'redis.internal',
      port: 6380,
      username: 'myuser',
      password: 'secret',
      connectTimeout: 1234,
    });
  });

  it('uses REDIS_URL and REDIS_TLS for managed Redis', () => {
    process.env = {
      ...ORIGINAL_ENV,
      REDIS_URL: 'redis://default:redis-password@redis.example.test:6379',
      REDIS_TLS: 'true',
      REDIS_CONNECT_TIMEOUT_MS: '1234',
    };
    delete process.env.REDIS_HOST;
    delete process.env.REDIS_PORT;
    delete process.env.REDIS_USERNAME;
    delete process.env.REDIS_PASSWORD;

    expect(workerConnectionOptions()).toEqual({
      host: 'redis.example.test',
      port: 6379,
      username: 'default',
      password: 'redis-password',
      connectTimeout: 1234,
      tls: {},
    });
  });
});

describe('webhookWorkerConcurrency', () => {
  const ORIGINAL_ENV = process.env;
  afterEach(() => {
    process.env = ORIGINAL_ENV;
  });

  it('defaults to 10 so deliveries do not serialize behind one slow receiver', () => {
    process.env = { ...ORIGINAL_ENV };
    delete process.env.WEBHOOK_WORKER_CONCURRENCY;
    expect(webhookWorkerConcurrency()).toBe(10);
  });

  it('honors a positive override', () => {
    process.env = { ...ORIGINAL_ENV, WEBHOOK_WORKER_CONCURRENCY: '25' };
    expect(webhookWorkerConcurrency()).toBe(25);
  });

  it('falls back to the default for a non-positive/garbage override', () => {
    process.env = { ...ORIGINAL_ENV, WEBHOOK_WORKER_CONCURRENCY: '0' };
    expect(webhookWorkerConcurrency()).toBe(10);
    process.env = { ...ORIGINAL_ENV, WEBHOOK_WORKER_CONCURRENCY: 'abc' };
    expect(webhookWorkerConcurrency()).toBe(10);
  });
});