import { ServiceUnavailableException } from '@nestjs/common';
import { PasswordService } from './password.service';

describe('PasswordService', () => {
  it('logs password reset mail delivery failures with stable error code', async () => {
    const resetTokens = {
      create: jest.fn((value) => value),
      save: jest.fn(async (value) => ({ ...value, id: 'token-id' })),
      delete: jest.fn().mockResolvedValue(undefined),
    };
    const service = new PasswordService(
      resetTokens as any,
      { get: jest.fn((key: string) => (key === 'SMTP_HOST' ? 'smtp.example.com' : 'secret')), getOrThrow: jest.fn(() => 'secret') } as any,
      {} as any,
      { findUserByEmail: jest.fn().mockResolvedValue({ id: 'user-1', email: 'maria@example.com' }) } as any,
      { sendPasswordResetMail: jest.fn().mockRejectedValue(new Error('SMTP unavailable')) } as any,
      { record: jest.fn().mockResolvedValue(undefined) } as any,
      { log: jest.fn().mockResolvedValue(undefined) } as any,
      { get: jest.fn(() => ({ correlationId: 'corr-1' })) } as any,
    );

    await expect(service.requestReset('maria@example.com')).rejects.toBeInstanceOf(ServiceUnavailableException);
    expect((service as any).applicationErrorLogger.log).toHaveBeenCalledWith(expect.objectContaining({
      code: 'PASSWORD_RESET_EMAIL_SEND_FAILED',
      category: 'EMAIL',
      requestContext: expect.objectContaining({ correlationId: 'corr-1', userId: 'user-1' }),
      context: expect.objectContaining({ maskedRecipient: 'm***@example.com', mailProvider: 'smtp.example.com' }),
      handled: true,
    }));
  });
});