/**
 * Unit tests for backend configuration module.
 * Tests environment variable validation using Zod schema.
 */
import { describe, it, expect } from 'bun:test';

describe('Config Module', () => {
  it('should export config object with expected keys', async () => {
    // We set JWT_SECRET env var to ensure validation passes
    process.env.JWT_SECRET = 'test-secret-for-unit-tests-at-least-16-chars';

    // Dynamic import to get fresh module
    const { config } = await import('../../src/config');

    expect(config).toBeDefined();
    expect(typeof config.PORT).toBe('number');
    expect(typeof config.JWT_SECRET).toBe('string');
    expect(config.JWT_SECRET.length).toBeGreaterThanOrEqual(16);
    expect(typeof config.DATABASE_PATH).toBe('string');
    expect(typeof config.PLANE_BASE_URL).toBe('string');
    expect(typeof config.GITEA_BASE_URL).toBe('string');
  });

  it('should have correct default PORT', async () => {
    process.env.JWT_SECRET = 'test-secret-for-unit-tests-at-least-16-chars';

    const { config } = await import('../../src/config');

    // Default PORT from schema is 3200
    expect(config.PORT).toBe(3200);
  });

  it('should have valid default URLs', async () => {
    process.env.JWT_SECRET = 'test-secret-for-unit-tests-at-least-16-chars';

    const { config } = await import('../../src/config');

    expect(config.PLANE_BASE_URL).toMatch(/^https?:\/\//);
    expect(config.GITEA_BASE_URL).toMatch(/^https?:\/\//);
  });
});