release

#!/bin/bash

# This script creates and pushes a release
# It takes one parameter: the version number of the release
# The current version number is in ih-core/bin/VERSION
# This command will fail if the repo is dirty, or if the release already exists.
# It will cause a commit with the new version updates

THIS_DIR=$(dirname "$(realpath "$0")")
ROOT_DIR=$(dirname "$THIS_DIR")

function usage() {
  cat <<USAGE
release

Publishes a release. Must be run on the master branch,
unless the '-p' flag is set.

Flags

  -p     Create a pre-release version
USAGE
  exit 1
}

PRERELEASE=""

while getopts "p" arg; do
  case $arg in
    p) PRERELEASE="-p" ;;
    *)
      ih::help
      exit 1
      ;;
  esac
done

BRANCH=$(git rev-parse --abbrev-ref HEAD)

if [[ $BRANCH != "master" && -z $PRERELEASE ]]; then
  usage
fi

if [[ $(git status --short) != '' ]]; then
  echo 'Working directory is dirty, are you missing something?'
  exit 1
fi

VERSION=$(cat "$ROOT_DIR/VERSION")

if gh release list | cut -f1 | grep -q "$VERSION"; then
  echo "A release already exists for version $VERSION"
  exit 0
fi

echo "Creating a release for version $VERSION"

# We want to abort if any of the following commands fail
set -e

git pull

if [[ $(git tag --list) =~ ^$VERSION$ ]]; then
  echo "Tag for $VERSION already exists..."
  if [[ $(git rev-parse "$VERSION") == $(git rev-parse HEAD) ]]; then
    echo "Tag for $VERSION already points to HEAD, not re-tagging."
  else
    echo "Tag for $VERSION points to something other than HEAD, create a new version using the ./meta/bump script."
    return 1
  fi
else
  git tag -a "$VERSION" -m "Release version $VERSION"

  git push --tags
fi

gh release create \
  "$VERSION" \
  $PRERELEASE \
  -t "$VERSION" \
  --notes "Release version $VERSION" \
  --target "$BRANCH" \
  ./bootstrap \
  ./formula/ih-core.rb

set +e