name: update-pack-version

on:
  workflow_dispatch:
  repository_dispatch:
    types:
      - pack-release

jobs:
  update-pack-version:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Retrieve latest pack version
        id: version
        run: |
            NEW_VERSION=$(curl -s -H "Accept: application/vnd.github.v3+json" https://api.github.com/repos/buildpacks/pack/releases/latest | jq .tag_name -r | cut -c 2-)
            echo "new_version=${NEW_VERSION}" >> ${GITHUB_OUTPUT}
      - name: Update setup-pack/action.yml with the new Pack version
        run: |
            sed -i -z "s/default:     '[0-9]\{1,\}.[0-9]\{1,\}.[0-9]\{1,\}'/default:     '${{ steps.version.outputs.new_version }}'/" setup-pack/action.yml
      - name: Create pull request
        uses: peter-evans/create-pull-request@v5
        with:
          token: ${{ secrets.DISTRIBUTION_GITHUB_TOKEN }}
          commit-message: Update default Pack version to v${{ steps.version.outputs.new_version }}
          title: Update default Pack version to v${{ steps.version.outputs.new_version }}
          body: |
            Updates the `setup-pack` action's default `pack-version` to the latest Pack release.
            
            Release notes:
            https://github.com/buildpacks/pack/releases/tag/v${{ steps.version.outputs.new_version }}
          labels: |
            semver:patch
            type:dependency-upgrade
          branch: update-version
          base: main
          signoff: true