#! /bin/sh

set -e

(git branch | grep -q '* master') || {
  echo "Only release from the master branch."
  exit 1
}

# Delete existing gh-pages branch
if [ `git branch --list gh-pages `]
then
  git branch -D gh-pages
fi

git checkout -b gh-pages
rake generate_preview
git add .
git commit -am 'deploy preview'
git push origin gh-pages --force
git checkout master