CDKOUT=./cdk-outputs.json
INSTANCEID=`jq -r .[].ec2instanceid $CDKOUT`
if [ -z $INSTANCEID ]; then
    echo "no running instance $INSTANCEID found"
    exit
else
    echo "instance $INSTANCEID is running"    
fi    
IP_ADDRESS=`aws ec2 describe-instances --filters "Name=instance-id,Values=$INSTANCEID" | jq -r .Reservations[].Instances[].NetworkInterfaces[].Association.PublicIp`
KEYFILE=`jq -r .keyFile configs/config.json`
NICKNAME=`jq -r .nickName configs/config.json`
EC2NAME=`jq -r .ec2Name configs/config.json`
DOMAIN=`aws route53 get-hosted-zone --id Z00609272L7MZI1OMD0IL | jq -r .HostedZone.Name | sed 's/\.$//'`
FQDN=$EC2NAME.$DOMAIN
echo "alias IP address: $IP_ADDRESS"
echo "ec2 hostname $EC2NAME" 
echo "ssh nickname: $NICKNAME"
echo "ssh keyFile: $KEYFILE"
echo "FQDN:" $FQDN
cp ~/.ssh/config ~/.ssh/config.bak
OLDALIAS=`ssh -G $NICKNAME |grep ^hostname | sed -n -e 's/hostname //p' | xargs` # xargs strips spaces (neat hack)
echo "oldAlias: " $OLDALIAS
EXISTS=`grep $NICKNAME ~/.ssh/config | sed -n -e 's/Host //p' | xargs` # xargs strips spaces (neat hack)
echo "Existing host: " $EXISTS
if [[ $EXISTS == $NICKNAME ]]; then
    echo "Host $EXISTS record exists"
    sed -i -e "s/$OLDALIAS/$IP_ADDRESS/g" ~/.ssh/config 
    ssh-keygen -R $OLDALIAS
    ssh-keygen -R $FQDN
else
cat << EOF >> ~/.ssh/config
Host $NICKNAME
    HostName $IP_ADDRESS
    IdentityFile $KEYFILE

EOF
fi
echo "new ~/.ssh/config file:"
cat ~/.ssh/config