// Verifies REDIS_URL with embedded password is parsed correctly by
// ioredis. Production runs against a Coolify Redis service that requires
// auth — a hardcoded localhost fallback or a URL parser that drops the
// password would silently fall back to "no auth" and ECONNREFUSED.

const mockCtor = jest.fn();
jest.mock('ioredis', () =>
  // ioredis is a constructor — record arguments and stub event handlers.
  jest.fn().mockImplementation((url, opts) => {
    mockCtor(url, opts);
    return {
      on: () => {},
      ping: async () => 'PONG',
    };
  })
);

beforeEach(() => {
  mockCtor.mockReset();
  // Clear the cached singleton so each test gets a fresh ctor call.
  jest.resetModules();
});

describe('redis client URL handling', () => {
  test('passes REDIS_URL with password through to ioredis verbatim', () => {
    process.env.REDIS_URL = 'redis://default:s3cret-pass@cache-host:6379/0';
    const { getRedisClient } = require('../../src/utils/redis');
    getRedisClient();
    expect(mockCtor).toHaveBeenCalledTimes(1);
    expect(mockCtor.mock.calls[0][0]).toBe('redis://default:s3cret-pass@cache-host:6379/0');
  });

  test('falls back to 127.0.0.1 default when REDIS_URL is unset', () => {
    delete process.env.REDIS_URL;
    const { getRedisClient } = require('../../src/utils/redis');
    getRedisClient();
    expect(mockCtor.mock.calls[0][0]).toBe('redis://127.0.0.1:6379');
  });

  test('passes enableOfflineQueue=false so degraded mode fails fast', () => {
    process.env.REDIS_URL = 'redis://localhost:6379';
    const { getRedisClient } = require('../../src/utils/redis');
    getRedisClient();
    expect(mockCtor.mock.calls[0][1]).toMatchObject({
      enableOfflineQueue: false,
      maxRetriesPerRequest: 1,
    });
  });

  test('rediss:// TLS scheme passes through (Upstash / managed Redis)', () => {
    process.env.REDIS_URL = 'rediss://user:t0ken@host.upstash.io:6379';
    const { getRedisClient } = require('../../src/utils/redis');
    getRedisClient();
    expect(mockCtor.mock.calls[0][0]).toBe('rediss://user:t0ken@host.upstash.io:6379');
  });
});

describe('no hardcoded localhost Redis anywhere else', () => {
  test('only src/utils/redis.js has the localhost default; nothing else', () => {
    const { execSync } = require('child_process');
    const out = execSync(
      'grep -rn "127.0.0.1.*6379\\|localhost.*6379" /home/kev/mastermind/vyndr/src --include="*.js" || true',
    ).toString();
    const lines = out.split('\n').filter((l) => l.trim());
    // Permit only the one fallback inside src/utils/redis.js.
    const offenders = lines.filter((l) => !l.includes('src/utils/redis.js'));
    expect(offenders).toEqual([]);
  });
});