heroku-deploy.sh

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

post_slack() {
  SLACK_URL="TODO:_FILL_ME_IN"

  curl -X POST \
    -H "Content-Type: application/json" \
    -d "{\"text\": \"$1\"}" \
    -s \
    $SLACK_URL > /dev/null
  echo "Posted \"$1\" in Slack."
}

git fetch --all
git checkout master
FILES=$(git diff origin/master heroku/master --name-only)
if [[ -z $FILES ]]; then
  echo "Nothing to deploy."
else
  echo "Changes detected."
  post_slack ":ship:"
  # Test for db changes
  if ! echo "$FILES" | grep -q "sql"; then
    echo "No database changes detected."
    git push heroku master
    echo "Deployed changes to Heroku."
  else
    echo "Database changes detected."
    post_slack ":migrate:"
    echo "Run 'bundle exec rake heroku:deploy'"
  fi
fi
# Return to branch
git checkout --