adding logic to give more details on version of rhocs

Author: Natalia Jordan

openshift-install-powervs

@@ -159,6 +159,68 @@ function output {
   $TF output "$output_var"
 }
 
+#-------------------------------------------------------------------------
+# Check for required environment variables and display helpful information
+#-------------------------------------------------------------------------
+function check_required_env_vars {
+  missing_vars=0
+  
+  log "Checking required environment variables..."
+  
+  # Check IBMCLOUD_API_KEY
+  if [[ -z "${IBMCLOUD_API_KEY}" ]]; then
+    warn "IBMCLOUD_API_KEY is not set"
+    echo "  Description: IBM Cloud API key for authentication"
+    echo "  How to set: export IBMCLOUD_API_KEY='your-api-key-here'"
+    echo ""
+    missing_vars=1
+  fi
+  
+  # Check RELEASE_VER (optional but recommended)
+  if [[ -z "${RELEASE_VER}" ]]; then
+    warn "RELEASE_VER is not set (will use default: 4.15 type 4.15 if you want to use defualt elsee export correct rhcos version)"
+    echo "  Description: OpenShift release version to install"
+    echo "  Default: 4.15"
+    echo "  How to set: export RELEASE_VER='4.16'"
+    echo ""
+    missing_vars=1
+  else
+    log "Using RHCOS release version: ${RELEASE_VER}, to change run export RELEASE_VER='<version>'"
+  fi
+  
+  # Check RHEL_SUBS_PASSWORD (optional)
+  if [[ -z "${RHEL_SUBS_PASSWORD}" ]]; then
+    warn "RHEL_SUBS_PASSWORD is not set"
+    echo "  Description: RHEL subscription password for bastion nodes"
+    echo "  Note: You can provide this during the 'variables' prompt or set it now"
+    echo "  How to set: export RHEL_SUBS_PASSWORD='your-password-here'"
+    echo ""
+  fi
+  
+  # Check NO_OF_RETRY (optional)
+  if [[ -z "${NO_OF_RETRY}" ]]; then
+    log "NO_OF_RETRY not set (using default: 5)"
+  else
+    log "Using retry count: ${NO_OF_RETRY}"
+  fi
+  
+  # Check ARTIFACTS_VERSION (optional)
+  if [[ -z "${ARTIFACTS_VERSION}" ]]; then
+    log "ARTIFACTS_VERSION not set (using default: main)"
+  else
+    log "Using artifacts version: ${ARTIFACTS_VERSION}"
+  fi
+  
+  echo ""
+  
+  if [[ $missing_vars -eq 1 ]]; then
+    error "Required environment variables are missing. Please set them and try again."
+  fi
+  
+  success "Environment variable check completed"
+}
+
+
 #-------------------------------------------------------------------------
 # Util for retrying any command, special case for curl downloads
 #-------------------------------------------------------------------------
@@ -1694,6 +1756,9 @@ function main {
 
   [[ -z "$ACTION" ]] && help
   platform_checks
+    if [[ "$ACTION" != "help" ]]; then
+    check_required_env_vars
+  fi
   setup_tools
 
   case "$ACTION" in