crm-server/src/utils/errors.js

/**
 * Custom error classes pre aplikáciu
 */

export class AppError extends Error {
  constructor(message, statusCode = 500, details = null) {
    super(message);
    this.statusCode = statusCode;
    this.details = details;
    this.isOperational = true;

    Error.captureStackTrace(this, this.constructor);
  }
}

export class ValidationError extends AppError {
  constructor(message, details = null) {
    super(message, 400, details);
    this.name = 'ValidationError';
  }
}

export class BadRequestError extends AppError {
  constructor(message = 'Zlá požiadavka') {
    super(message, 400);
    this.name = 'BadRequestError';
  }
}

export class AuthenticationError extends AppError {
  constructor(message = 'Neautorizovaný prístup') {
    super(message, 401);
    this.name = 'AuthenticationError';
  }
}

export class ForbiddenError extends AppError {
  constructor(message = 'Prístup zamietnutý') {
    super(message, 403);
    this.name = 'ForbiddenError';
  }
}

export class NotFoundError extends AppError {
  constructor(message = 'Nenájdené') {
    super(message, 404);
    this.name = 'NotFoundError';
  }
}

export class ConflictError extends AppError {
  constructor(message = 'Konflikt') {
    super(message, 409);
    this.name = 'ConflictError';
  }
}

export class RateLimitError extends AppError {
  constructor(message = 'Príliš veľa požiadaviek') {
    super(message, 429);
    this.name = 'RateLimitError';
  }
}

/**
 * Error response formatter
 * @param {Error} error
 * @param {boolean} includeStack - Či má zahrnúť stack trace (len development)
 * @returns {Object} Formatted error response
 */
export const formatErrorResponse = (error, includeStack = false) => {
  const response = {
    success: false,
    error: {
      message: error.message || 'Interná chyba servera',
      statusCode: error.statusCode || 500,
    },
  };

  if (error.details) {
    response.error.details = error.details;
  }

  if (includeStack && process.env.NODE_ENV === 'development') {
    response.error.stack = error.stack;
  }

  return response;
};