Script for deploying yeoman projects to either staging or production environment on Heroku

deploy.sh

#!/bin/bash

PROJECT=name;

if [[ "$1" == "staging" || "$1" == "production" ]]; then
  TARGET=`echo "$1" | tr '[:lower:]' '[:upper:]'`;

  read -p "Do you really wish to deploy to $TARGET? [yn] " yn;

  if [[ "$yn" != "y" ]]; then
    exit 0;
  fi
else
  echo "You must supply a parameter: 'staging' or 'production'";
  exit 1;
fi

if [[ "$1" == "staging" ]]; then
  BRANCH=staging;
else
  BRANCH=production;
fi

TMP=tmp-deploy-branch-`date +%s`;

rm -rf dist bower_components;

bower install;

NODE_ENV=$BRANCH gulp;

git stash save -u;

git checkout master;
git pull;

git checkout -b $TMP;

sed -i -e 's/dist\///;s/bower_components//' .gitignore;

heroku git:remote -a $PROJECT-$BRANCH;
git add -A;
git commit -m "`date`";

heroku maintenance:on --app $PROJECT-$BRANCH;
git push -f git@heroku.com:$PROJECT-$BRANCH.git $TMP:master;
heroku run --app $PROJECT-$BRANCH -- npm run migrate;
heroku maintenance:off --app $PROJECT-$BRANCH;

git checkout -f @{-2};
git branch -D $TMP;
git stash pop;

bower install --force;

exit 0;