heroku-prod-diff.sh

#!/usr/bin/env bash

get_latest_sha () {
  heroku releases --num 1 --remote $1 2> /dev/null | grep -v === | awk '{print $3}'
}

STAGING_SHA=$(get_latest_sha "staging")
PRODUCTION_SHA=$(get_latest_sha "production")

echo "Staging: $STAGING_SHA, Production: $PRODUCTION_SHA"

if [[ $STAGING_SHA == $PRODUCTION_SHA ]]; then
  echo "Production is caught up to staging"
else
  echo "Production is behind staging"
  git log --no-decorate --date=short --pretty=format:"%Cred%h%Creset %Cgreen%ad%Creset %s" $PRODUCTION_SHA..$STAGING_SHA
fi