VisionAPI safe search detection

#!/bin/bash
if [ $# != 1 ]; then
    echo "Invalid argument"
    exit 1
fi
uri=$1
echo Image uri is ${uri}
scode=$(curl "${uri}" -o /dev/null -w '%{http_code}\n' -s)
if [ $scode != 200 ]; then
    echo HTTP status is ${scode}, abort.
    exit 1
fi
sed -e "s|@@URL_HERE@@|${uri}|" << EOF | curl -X POST -H "Authorization: Bearer "$(gcloud auth application-default print-access-token) -H "Content-Type: application/json; charset=utf-8" -d @- https://vision.googleapis.com/v1/images:annotate
{
  "requests": [
    {
      "image": {
    "source": {
      "imageUri": "@@URL_HERE@@"
    }
      },
      "features": [
    {
      "type": "SAFE_SEARCH_DETECTION"
    }
      ]
    }
  ]
}
EOF
echo ?:UNKNOWN, 1:VERY_UNLIKELY, 2:UNLIKELY, 3:POSSIBLE, 4LIKELY, 5:VERY_LIKELY