Purge a kubernetes namespace but only if it is empty

kube-purge-namespace.sh

#!/bin/bash

set -e

NAMESPACE="$1"

echo "Checking if we can purge namespace $NAMESPACE"
OUTPUT=$(kubectl -n "$NAMESPACE" get all 2>&1)

echo "$OUTPUT"

case "$OUTPUT" in
  "No resources found.")
    kubectl delete namespace "$NAMESPACE"
    exit 0
    ;;
  *)
    echo ""
    echo "Can't delete namespace $NAMESPACE as it is not empty"
    exit 1
    ;;
esac