release-preview.yml

name: Release Preview

# Cancel other related workflows in-progress
concurrency:
  group: release-preview-${{ github.ref }}
  cancel-in-progress: true

on:
  workflow_dispatch:
    inputs:
      create-new-branch:
        description: 'Create branch'
        type: boolean
        required: true
        default: true
      notify:
        description: 'Announce release'
        type: boolean
        required: true
        default: true

jobs:
  release-branch:
    # run if toggled on and not off an existing release branch
    if: ${{github.event.inputs.create-new-branch && github.event.inputs.create-new-branch == 'true' && !startsWith(github.ref,'refs/heads/release/')}}
    name: Release Branch
    runs-on: ubuntu-latest
    outputs:
      branch-name: ${{ steps.get-branch-name.outputs.branch-name }}
    steps:
      - uses: actions/checkout@v4

      - name: Create Branch
        shell: bash
        run: |
          sh .github/scripts/release-branch.sh

      - name: Get New Branch Name
        id: get-branch-name
        shell: bash
        run: |
          echo ::set-output name=branch-name::$(git rev-parse --abbrev-ref HEAD)

  release-preview:
    needs: [release-branch]
    if: ${{ always() }}
    name: Release Preview
    runs-on: ubuntu-latest
    steps:
      - name: Draft or Update a Release
        # https://github.com/release-drafter/release-drafter
        uses: release-drafter/release-drafter@v5
        id: draft-release
        with:
          publish: false
          commitish: ${{needs.release-branch.outputs.branch-name || github.ref_name}}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Convert Github markdown to Slack markdown syntax
        # https://github.com/LoveToKnow/slackify-markdown-action
        uses: LoveToKnow/slackify-markdown-action@v1.0.0
        if: ${{ github.event.inputs.notify == 'true' }}
        id: slack-markdown
        with:
          text: |
            [Release Notes](https://github.com/AcademySoftwareFoundation/OpenTimelineIO/releases/tag/${{ steps.draft-release.outputs.tag_name }})

            ${{ steps.draft-release.outputs.body }}

      - name: 'Slack Notification to ##opentimelineio'
        # https://github.com/rtCamp/action-slack-notify
        uses: rtCamp/action-slack-notify@v2
        if: ${{ github.event.inputs.notify == 'true' }}
        env:
          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_RELEASES_URL }}
          SLACK_ICON: https://avatars.githubusercontent.com/u/40807682?s=512&v=4
          SLACK_LINK_NAMES: true
          SLACK_USERNAME: 'OTIO Release Preview'
          SLACK_CHANNEL: 'opentimelineio'
          SLACK_COLOR: '#5b53ff'
          SLACK_TITLE: 'Release Preview for ${{ github.repository }}'
          SLACK_MESSAGE: |
            ${{ steps.slack-markdown.outputs.text }}
          SLACK_FOOTER: |
            Release Preview of ${{ steps.draft-release.outputs.name }}
          MSG_MINIMAL: commit