#!/bin/bash
echo "Looking up CloudFront distribution ID for HFF Entry Forms ${TARGET_ENV} environment."
cloudfront_distribution_id=$(\
  aws cloudfront list-distributions \
    --query "DistributionList.Items[?starts_with(Comment, 'HFF Entry Forms ${TARGET_ENV}')].Id | [0]" \
  | sed -e 's/^"//' -e 's/"$//'
)

if [[ -z "${cloudfront_distribution_id}" ]]; then
  >&2 echo "Unable to find CloudFront distribution for domain ${TARGET_ENV}."
  exit 3
fi

echo "Found distribution ID ${cloudfront_distribution_id}."

echo "Invalidating the CloudFront cache for ${TARGET_ENV}."
invalidation_id=$(aws cloudfront create-invalidation \
  --query 'Invalidation.Id' \
  --distribution-id "${cloudfront_distribution_id}" \
  --paths '/index.html')

if [[ $? -ne 0 || -z "${invalidation_id}" ]]; then
  >&2 echo "Unable to create the CloudFront invalidation."
else
  echo "Successfully created invalidation ${invalidation_id}."
fi

echo "Done."