#!/bin/sh
#
# Open a PR for releasing a new version of this repository.
#
# Usage: bin/prep-release VERSION
#
###
set -e

if [ -z "$1" ]; then
  echo "usage: bin/prep-release VERSION" >&2
  exit 64
fi

version=$1
old_version=$(< VERSION)

if ! bundle exec rake; then
  echo "test failure, not releasing" >&2
  exit 1
fi

printf "RELEASE %s => %s\n" "$old_version" "$version"
git checkout master
git pull

git checkout -b "release-$version"

printf "%s\n" "$version" > VERSION
bundle
git add VERSION Gemfile.lock
git commit -m "Release v$version"
git push

if command -v gh > /dev/null 2>&1; then
  gh pull-request -m "Release v$version"
else
  echo "gh not installed? Please open the PR manually" >&2
fi

echo "After merging the version-bump PR, run bin/release"