/**
 * Custom error classes
 * Implements Open/Closed Principle: Extensible for new error types
 */

export abstract class AppError extends Error {
  abstract statusCode: number;

  constructor(message: string) {
    super(message);
    this.name = this.constructor.name;
    Error.captureStackTrace(this, this.constructor);
  }
}

export class NotFoundError extends AppError {
  statusCode = 404;
}

export class ValidationError extends AppError {
  statusCode = 400;
}

export class UnauthorizedError extends AppError {
  statusCode = 401;
}

export class ForbiddenError extends AppError {
  statusCode = 403;
}

export class ConflictError extends AppError {
  statusCode = 409;
}

export class InternalServerError extends AppError {
  statusCode = 500;
}