# this script expects $DOTOKEN variable with your digital ocean token
# this script gets or creates smallest DO droplet and remotely executes script on it
# afterwards, droplet is destroyed

DROPLETNAME=example.com
DOHOME="https://api.digitalocean.com/v2"

cat <<EOF > .curlargs
-s
-H "Authorization: Bearer $DOTOKEN"
-H "Content-Type: application/json"
EOF
CURL="curl -K .curlargs"

SSHKEYS=`$CURL "$DOHOME/account/keys" | R path ssh_keys | R map path fingerprint`

CREATECONTAINER=`cat <<EOF
{
  "name":"$DROPLETNAME",
  "region":"nyc3",
  "size":"512mb",
  "image":"ubuntu-14-04-x64",
  "ssh_keys":$SSHKEYS}
EOF`
echo $SSHKEYS
function GET_DROPLET {
  DROPLET=`$CURL "$DOHOME/droplets/" | \
  R path droplets | \
  R find where "{\"name\": \"$DROPLETNAME\"}"`

  export IP=`R path networks.v4.0.ip_address <<< $DROPLET`
  export ID=`R path id <<< $DROPLET`
  echo "dropet id: $ID ip: $IP"
}

GET_DROPLET

if [ -z "$ID" ]; then
  echo create droplet!
  $CURL -X POST -d "$CREATECONTAINER" "$DOHOME/droplets/"

  while [ -z "$IP" ]; do
    GET_DROPLET
  done
fi

# execute
ssh "root@$IP" 'bash -s' < run.sh
# delete droplet
$CURL -X DELETE "$DOHOME/droplets/$ID"
rm .curlargs