#!/usr/bin/env bash
set -e

# major,minor,patch
PART=${1}
NEXT_VERSION=$(./scripts/bump --next-version "$PART")
UNRELEASED_LOG="/tmp/ruby-pending-changes.md"

if [ -z "$NEXT_VERSION" ]; then
  echo "Failed to get next version"
else
  # Generate pending changes in tmpfile
  ./scripts/changelog --pending $UNRELEASED_LOG
  # Add a git message header of Release X.Y.Z
  printf "Release %s\n\n$(cat $UNRELEASED_LOG)" "$NEXT_VERSION" > $UNRELEASED_LOG
  # Delete credit line
  sed -i '' -e '$ d' $UNRELEASED_LOG

  git checkout -b "release-$NEXT_VERSION"

  # Actually bump the version
  ./scripts/bump "$PART"

  # Rebuild docs
  ./scripts/build

  # Make the commit
  git add . --all
  git commit -F "$UNRELEASED_LOG"

  # Push up this branch for PR
  git push origin "release-$NEXT_VERSION"

  # Create PR
  hub pull-request -c -F "$UNRELEASED_LOG"
fi