import '../dto/results.dart';
import '../mappers/results.dart';
import '../models/auth.dart';
import 'contracts.dart';
import 'verification.dart';

/// Deterministic local simulation. No network, storage, credentials or sessions
/// are retained. Configure failures explicitly rather than using magic emails.
class DummyLoginService implements LoginService, SimulationInfo {
  @override
  bool get isSimulated => true;
  const DummyLoginService({
    this.delay = const Duration(milliseconds: 600),
    this.failure,
  });
  final Duration delay;
  final AuthError? failure;

  @override
  Future<AuthResult> login(LoginRequest request) async {
    await Future<void>.delayed(delay);
    if (failure case final error?) throw AuthException(error);
    return AuthMapper.fromDTO(
      const AuthDTO(userId: 'demo-user', simulated: true),
    );
  }
}

class DummySignupService implements SignupService, SimulationInfo {
  @override
  bool get isSimulated => true;
  const DummySignupService({
    this.delay = const Duration(milliseconds: 600),
    this.failure,
  });
  final Duration delay;
  final AuthError? failure;

  @override
  Future<AuthResult> signup(SignupRequest request) async {
    await Future<void>.delayed(delay);
    if (failure case final error?) throw AuthException(error);
    return AuthMapper.signup(
      const AuthDTO(userId: 'demo-user', simulated: true),
      email: request.email.trim(),
    );
  }
}