#!/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)
branch="release-$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 $branch

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

compare_link="https://github.com/codeclimate/codeclimate/compare/${old_version}...$(git rev-parse --short $branch)"
pr_description_file=$(mktemp -t cc_commit_message) || exit 1
printf "Release v$version\n\n$s\n" "$compare_link" > "$pr_description_file"
if command -v hub > /dev/null 2>&1; then
  hub pull-request -F "$pr_description_file"
elif command -v gh > /dev/null 2>&1; then
  gh pull-request -F "$pr_description_file"
else
  echo "hub not installed? Please open the PR manually" >&2
fi
rm "$commit_message_file"

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