#!/bin/sh
set -eu
umask 077
rm -f review.tfplan
plan_dir=$(mktemp -d ./.review-plan.XXXXXX)
trap 'rm -rf "$plan_dir"' 0
trap 'exit 130' INT
trap 'exit 143' HUP TERM
status=0
terraform plan -input=false -detailed-exitcode -out="$plan_dir/review.tfplan" || status=$?
case "$status" in
  0) printf "%s\n" "No changes proposed." ;;
  2) terraform show -no-color "$plan_dir/review.tfplan" ;;
  *) printf "%s\n" "Planning failed; inspect the errors." >&2; exit "$status" ;;
esac
mv "$plan_dir/review.tfplan" review.tfplan