#!/bin/bash

validate_ref_name() {
  if [[ -z "$REF_NAME" ]] || \
     [[ ! "$REF_NAME" =~ ^[a-zA-Z0-9_-]+$ ]] || \
     [[ "$REF_NAME" == "shared" ]]
  then
    echo "Error: Invalid REF_NAME value: '$REF_NAME'."
    exit 1
  fi
}
