Delete pre-release when a branch is deleted #20

	name: Delete pre-release when a branch is deleted
	# Runs when PRs are merged or closed.
	# See https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#running-your-pull_request-workflow-when-a-pull-request-merges
	# The circleci config builds CLI binaries when a PR is opened and hosts them under a GitHub (pre-)release named after the PR branch
	# This workflow action deletes that pre-release when a PR is merged or closed.
	on:
	delete:
	branches:

	jobs:
	delete-pre-release:
	name: Delete pre-release if exists
	runs-on: ubuntu-latest
	steps:
	- name: Delete pre-release and tag named after branch
	env:
	GH_TOKEN: ${{ github.token }}
	shell: bash
	run: \|
	# Figure out tag name from branch name. This is coupled to the tag name generation that exists in .circleci/config.yml's `create-github-release` job.
	LATEST_RELEASE_TAG=$(gh release list --repo slackapi/slack-cli --json tagName,isLatest --jq ".[] \| select(.isLatest == true) \| .tagName" )
	TAG_NAME="$LATEST_RELEASE_TAG-${{ github.event.ref }}"
	echo "Identified pre-release tagname to 🔪: $TAG_NAME"
	# Delete the pre-release
	GH_DEBUG=1 gh release --repo slackapi/slack-cli delete $TAG_NAME -y --cleanup-tag

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