#!/bin/bash
set -e -u

MM=5.0
REVISION=10
PREV_REVISION=$(($REVISION - 1))

declare -a REGIONS=($(aws ec2 describe-regions --region eu-west-1 --query "Regions[*].RegionName" --output text))
for region in "${REGIONS[@]}"; do
# To list images with Tags:
# aws ec2 describe-images --region "$region" --filters "Name=name,Values=* ${MM} *rev. $REVISION*" --query 'Images[*].[ImageId,Name,Tags[*].[Value]]'
    ## Make PREV revision images private
    amis=$(aws ec2 describe-images --region "$region" --filters "Name=name,Values=* ${MM} *rev. $PREV_REVISION*" | jq -r '.Images[].ImageId')
    for ami in "${amis[@]}"; do
        echo "#### Doing $region ami $ami"
        aws ec2 modify-image-attribute --region "$region" --image-id "$ami" --launch-permission 'Remove=[{Group=all}]'
        aws ec2 describe-image-attribute --region "$region" --image-id "$ami" --attribute launchPermission
    done

    ## Check if NEXT revision images are public
    amis=$(aws ec2 describe-images --region "$region" --filters "Name=name,Values=* ${MM} *rev. $REVISION*" | jq -r '.Images[].ImageId')
    for ami in "${amis[@]}"; do
        echo "#### Doing $region ami $ami"
        aws ec2 describe-image-attribute --region "$region" --image-id "$ami" --attribute launchPermission
        # aws ec2 create-tags --region "$region" --resources "$ami" --tags "Key=Name,Value=UCS-$NEXT"
        # aws ec2 modify-image-attribute --region "$region" --image-id "$ami" --launch-permission 'Add=[{Group=all}]'
        # aws ec2 describe-images --region "$region" --image-id "$ami"
    done
done