#!/bin/bash

set -x

# 'latest' is a git tag that we recreate every time we release a new
# version. If the VERSION file has changed since `latest` then we release a
# new version.
git pull --tags
if git diff --name-only HEAD latest -- VERSION | egrep -q .; then
  # The VERSION file changed since 'latest', build the gem and push
  gem build *.gemspec
  gem push *.gem

  git tag -f latest HEAD
  git tag -f "v$(cat VERSION)"

  git push -f origin latest
  git push --tags
fi