pr-merged.yml

on:
  pull_request:
    branches:
    - main
    types: [closed]

name: '[autorelease] PR merged'

permissions:
  contents: write

jobs:
  merge:
    runs-on: ubuntu-latest
    if: github.event.pull_request.merged == true && contains(github.event.pull_request.labels.*.name, 'autorelease')
    steps:
    - uses: actions/checkout@v4

    - name: Get release version
      id: get-release-version
      run: |
        # Head branch should be named autorelease/<version>
        if ! [[ "${{ github.event.pull_request.head.ref }}" =~ ^autorelease\/[A-Za-z0-9.+-]+$ ]]; then
          echo "::error::Invalid branch '${{ github.event.pull_request.head.ref }}'"
          exit 1
        fi
        VERSION=$(echo "${{ github.event.pull_request.head.ref }}" | awk -F/ '{print $2}')
        echo "VERSION=$VERSION"

        RE='^[vV]?([0-9]+)[.]([0-9]+)[.]([0-9]+)(-[0-9A-Za-z.+-]*)?'
        if [[ $VERSION =~ $RE ]]; then
          MAJOR="${BASH_REMATCH[1]}"
          MINOR="${BASH_REMATCH[2]}"
          PATCH="${BASH_REMATCH[3]}"
          PRERELEASE="${BASH_REMATCH[4]}"
        else
          echo "::error::Version '$VERSION' is not in a valid format" && exit 1
        fi

        if [[ "$PRERELEASE" ]]; then pre=true; else pre=false; fi

        if [[ -f $GITHUB_OUTPUT ]]; then
          echo "release-version=$VERSION" >> $GITHUB_OUTPUT
          echo "is-prerelease=$pre" >> $GITHUB_OUTPUT
        else
          echo "::set-output name=release-version::$VERSION"
          echo "::set-output name=is-prerelease::$pre"
        fi

    - name: Get release notes
      id: get-release-notes
      uses: ./
      with:
        command: query
        version: ${{ steps.get-release-version.outputs.release-version}}

    - name: Display release notes
      run: |
        echo "${{ steps.get-release-notes.outputs.release-notes }}"

    - name: Create Draft Release
      id: create_release
      uses: release-flow/.github/actions/release/create@v1
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        tag-name: 'v${{ steps.get-release-version.outputs.release-version }}'
        release-name: 'Release ${{ steps.get-release-version.outputs.release-version }}'
        draft: true
        prerelease: ${{ steps.get-release-version.outputs.is-prerelease}}
        body: ${{ steps.get-release-notes.outputs.release-notes }}

    - name: Display Instructions
      run: |
        echo "::notice title=Draft Release Prepared::A draft release has been prepared for you to approve: ${{ steps.create_release.outputs.html-url }}"