entrypoint.sh

#!/bin/bash

cd "${GITHUB_WORKSPACE}" \
  || (echo "Workspace is unavailable" >&2; exit 1)

. /usr/ros/${ROS_DISTRO}/setup.bash

set -eu

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

if [ ! -z "${INPUT_ISSUE_TITLE:-}" ]
then
  if [ ! -z "${INPUT_VERSION:-}" ]
  then
    echo "Both issue_title and version are specified" >&2
    exit 1
  fi
  INPUT_VERSION=$(echo ${INPUT_ISSUE_TITLE} | sed -e 's/^Release \(.*\)$/\1/')
fi

function cleanup() {
  # Detach head to work with repo-sync/pull-request
  git checkout refs/heads/${BRANCH_NAME}
  git branch -D release-${INPUT_VERSION} || true
}

# Check duplication
if git ls-remote --exit-code origin ${INPUT_VERSION}
then
  echo "Release already exists. Nothing to do." >&2
  cleanup
  exit 0
fi

update=false
if git ls-remote --exit-code origin release-${INPUT_VERSION}
then
  echo "Release candidate branch already exists. Updating." >&2
  update=true
fi

echo "created_branch=release-${INPUT_VERSION}" >> ${GITHUB_OUTPUT}
echo "version=${INPUT_VERSION}" >> ${GITHUB_OUTPUT}

# Setup
echo -e "machine github.com\nlogin ${INPUT_GITHUB_TOKEN}" > ~/.netrc
git config user.name "${INPUT_GIT_USER}"
git config user.email "${INPUT_GIT_EMAIL}"

# Fetch all history to generate changelog
git fetch --tags --prune --unshallow

# Update CHANGELOG
catkin_generate_changelog -y

if ${update}
then
  # Store updated CHANGELOGs
  git stash

  # Update release candidate branch
  git checkout release-${INPUT_VERSION}
  if git merge --no-edit ${BRANCH_NAME} | (grep "Already up to date.")
  then
    echo "Release already updated. Nothing to do." >&2
    cleanup
    exit 0
  fi

  # Overwrite CHANGELOGs
  git checkout stash@{0} $(find . -name CHANGELOG.rst)
else
  git checkout -b release-${INPUT_VERSION}
fi

# Fix RST format
sed '/^Forthcoming/,/^[0-9]\+\.[0-9]\+\.[0-9]\+/{/^  /d}' \
  -i $(find . -name CHANGELOG.rst)

git add $(find . -name CHANGELOG.rst)
git commit -m "Update changelog"

# Bump version
catkin_prepare_release -y --no-push --version ${INPUT_VERSION}
git tag -d ${INPUT_VERSION}

# Show
git log ${BRANCH_NAME}..HEAD

# Push
git push origin release-${INPUT_VERSION}

# Clean-up
cleanup