import { RoleSyncService } from '../src/modules/auth/role-sync.service';

describe('RoleSyncService - transaction rollback', () => {
  let service: RoleSyncService;
  const mockPrisma: any = {};
  const mockPermissionCache: any = { invalidate: jest.fn() };
  const mockEvents: any = { publish: jest.fn() };
  const mockGroupHash: any = { compute: (g: any) => require('crypto').createHash('sha256').update((g||[]).slice().sort().join(','), 'utf8').digest('hex') };

  beforeEach(() => {
    mockPrisma.user = { findUnique: jest.fn() };
    mockPrisma.authGroupRoleMapping = { findMany: jest.fn() };
    mockPrisma.userRole = { findMany: jest.fn().mockResolvedValue([]) };
    mockPrisma.user = mockPrisma.user;
    // simulate transaction throwing
    mockPrisma.$transaction = jest.fn(async (cb: any) => { throw new Error('tx failed'); });

    service = new RoleSyncService(mockPrisma as any, mockGroupHash as any, mockPermissionCache as any, mockEvents as any);
  });

  test('does not invalidate cache or publish event when transaction fails', async () => {
    mockPrisma.user.findUnique.mockResolvedValue({ id: 'uid', lastGroupHash: 'old' });
    mockPrisma.authGroupRoleMapping.findMany.mockResolvedValue([{ roleId: 'r1' }]);

    await expect(service.syncUserRolesFromAuthentik('uid', ['RL-Owner'])).rejects.toThrow('tx failed');

    expect(mockPermissionCache.invalidate).not.toHaveBeenCalled();
    expect(mockEvents.publish).not.toHaveBeenCalled();
  });
});