/// 커스텀 예외 클래스들 정의

/// 서버 예외
class ServerException implements Exception {
  final String message;
  final int? statusCode;
  final Map<String, dynamic>? errors;
  
  ServerException({
    required this.message,
    this.statusCode,
    this.errors,
  });
  
  @override
  String toString() => 'ServerException: $message (code: $statusCode)';
}

/// 캐시 예외
class CacheException implements Exception {
  final String message;
  
  CacheException({required this.message});
  
  @override
  String toString() => 'CacheException: $message';
}

/// 네트워크 예외
class NetworkException implements Exception {
  final String message;
  
  NetworkException({required this.message});
  
  @override
  String toString() => 'NetworkException: $message';
}

/// 인증 예외
class UnauthorizedException implements Exception {
  final String message;
  
  UnauthorizedException({required this.message});
  
  @override
  String toString() => 'UnauthorizedException: $message';
}

/// 유효성 검사 예외
class ValidationException implements Exception {
  final String message;
  final Map<String, List<String>>? fieldErrors;
  
  ValidationException({
    required this.message,
    this.fieldErrors,
  });
  
  @override
  String toString() => 'ValidationException: $message';
}

/// 권한 부족 예외
class ForbiddenException implements Exception {
  final String message;
  
  ForbiddenException({required this.message});
  
  @override
  String toString() => 'ForbiddenException: $message';
}

/// 리소스 찾을 수 없음 예외
class NotFoundException implements Exception {
  final String message;
  final String? resourceType;
  final String? resourceId;
  
  NotFoundException({
    required this.message,
    this.resourceType,
    this.resourceId,
  });
  
  @override
  String toString() => 'NotFoundException: $message';
}

/// 중복 리소스 예외
class DuplicateException implements Exception {
  final String message;
  final String? field;
  final String? value;
  
  DuplicateException({
    required this.message,
    this.field,
    this.value,
  });
  
  @override
  String toString() => 'DuplicateException: $message';
}

/// 비즈니스 로직 예외
class BusinessException implements Exception {
  final String message;
  final String? code;
  
  BusinessException({
    required this.message,
    this.code,
  });
  
  @override
  String toString() => 'BusinessException: $message (code: $code)';
}