function validateRequest(schema, target = 'body') {
  return (req, res, next) => {
    const data = req[target];
    const { error, value } = schema.validate(data, {
      abortEarly: false,
      stripUnknown: true
    });

    if (error) {
      const errorDetails = error.details.map(detail => ({
        field: detail.path.join('.'),
        message: detail.message,
        value: detail.context.value
      }));

      // Create a message that includes the field names for test compatibility
      const fieldNames = errorDetails.map(err => err.field).join(', ');
      const message = `Validation error: ${fieldNames}`;

      return res.status(400).json({
        success: false,
        message: message,
        errors: errorDetails,
        details: errorDetails // For backward compatibility
      });
    }

    // Replace the target data with validated and sanitized data
    req[target] = value;
    next();
  };
}

module.exports = {
  validateRequest
};