set -euo pipefail

VERSION="$1"

REF="$2"

BRANCH="$3"

check_not_empty \

VERSION \

REF \

BRANCH \

\

GITHUB_SERVER_URL \

GITHUB_REPOSITORY \

GITHUB_ACTOR \

DRY_RUN \

main_branch

create_pr() {

}

if grep "^## \[${VERSION}\]$" CHANGELOG.md; then

gh_summary "\`CHANGELOG.md@$REF\` has got already the \`[$VERSION]\` section."

exit 0

CHANGELOG_BRANCH="automation/changelog-$VERSION"

TITLE="chore(release): Advance \`CHANGELOG.md\` to the next release"

if git ls-remote --quiet --exit-code origin "$CHANGELOG_BRANCH"; then

gh_summary "Branch \`$CHANGELOG_BRANCH\` already exists."

mapfile -t EXISTING_PR <<<"$(gh pr list --head "$CHANGELOG_BRANCH" --search "$TITLE in:title" --state open --json number,url --jq ".[] | .number,.url")"

if [ "${#EXISTING_PR[@]}" -eq 2 ]; then

gh_summary ":arrow_right: There is already an open [PR ${EXISTING_PR[0]}](${EXISTING_PR[1]})," \

"which needs to be merged, ensuring all lines added to \`CHANGELOG.md\` after the release branch are listed" \

"above the \`[${VERSION}]\` section."

else

gh_summary ":arrow_right: There is no open PR from this branch. Please open a PR to the $main_branch if" \

"\`[CHANGELOG.md](${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/blob/$main_branch/CHANGELOG.md)\`" \

"still needs to be updated."

fi

exit 0

git switch --create "$CHANGELOG_BRANCH"

sed -i "s/## \[NEXT RELEASE\]/\\0\n\n### Added Features\n\n### Removed Features\n\n### Deprecated Features\n\n### Technical Changes\n\n## [$VERSION]\n\n/" CHANGELOG.md

git add CHANGELOG.md

if ! git diff-index --quiet HEAD; then

git commit --message "Next version in changelog after $VERSION"

PR_URL=""

if [ "$DRY_RUN" = "false" ]; then

git push --set-upstream origin "$CHANGELOG_BRANCH"

PR_URL=$(create_pr)

fi

# TODO: Add labels to skip CI runs

gh_summary ":arrow_right: Review and merge the [PR]($PR_URL)" \

"that has been created for the \`$main_branch\` branch with advanced \`CHANGELOG.md\`."