prepare-release.yml

on: 
  workflow_dispatch:
    inputs:
      release-type:
        description: 'Release type'
        type: choice
        required: true
        options:
        - major
        - minor
        - patch
        - premajor
        - preminor
        - prepatch
        - prerelease
        default: patch
      preid:
        description: 'Pre-release identifier (only for pre-release builds)'
        required: false

name: '[autorelease] Prepare release PR'

permissions:
  contents: read
  issues: write
  pull-requests: write

jobs:
  changelog:
    name: Update changelog and create PR
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
      with:
        ref: ${{ github.head_ref }}

    - uses: tibdex/github-app-token@v2
      id: generate-token
      with:
        app_id: ${{ secrets.RELEASEBOT_APP_ID }}
        private_key: ${{ secrets.RELEASEBOT_PRIVATE_KEY }}

    - name: 'Ensure autorelease label exists'
      run: |
        LABEL=$(gh api repos/$GITHUB_REPOSITORY/labels --jq '.[] | select(.name=="autorelease")')
        if [[ -z "$LABEL" ]]; then
          echo "Creating 'autorelease' label"
          gh api --silent repos/$GITHUB_REPOSITORY/labels -f name="autorelease" -f color="baa938" -f description="This is an automatically-created PR to trigger a release"
        else
          echo "'autorelease' label exists"
        fi
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    - name: Update changelog
      id: update-changelog
      uses: ./
      with:
        command: bump
        version: ${{ github.event.inputs.release-type }}
        preid: ${{ github.event.inputs.preid }}

    - name: Create Pull Request
      id: create-release-pr
      uses: peter-evans/create-pull-request@v6
      with:
        commit-message: 'chore: Update changelog for release ${{ steps.update-changelog.outputs.version }}'
        committer: 'releasebot <noreply@github.com>'
        branch: 'autorelease/${{ steps.update-changelog.outputs.version }}'
        title: '[autorelease] Release ${{ steps.update-changelog.outputs.version }}'
        # Be careful of newlines here. We need to use the literal block chomping style (|) so that the
        # contents of the release notes don't get chomped. See https://yaml-multiline.info/
        body: |
          **This PR was created automatically by the releasebot**

          **:warning: Approving this PR will trigger a workflow that generates a draft release. You need to publish this release when you are happy with it.**

          The changes in this PR prepare for release ${{ steps.update-changelog.outputs.version }}. The release notes are:

          ---

          ${{ steps.update-changelog.outputs.release-notes }}
        labels: autorelease
        token: ${{ steps.generate-token.outputs.token }}

    - name: Output summary
      run: |
        echo "::notice title=Release PR Prepared::A release PR has been created, please merge it to continue with the release process: ${{ steps.create-release-pr.outputs.pull-request-url }}"