bundle-update.yml

name: Scheduled Bundle Update PR

on:
  schedule:
    - cron: '0 0 * * 2'
  workflow_dispatch:

jobs:
  bundle-update:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: '3.4'

      - name: Set up git
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"

      - name: Switch branch
        run: |
          git switch -c bundle-update-$(date +'%Y%m%d')-$(uuidgen | cut -c1-8)

      - name: Install bundler
        run: gem install bundler

      - name: Run bundle update
        run: |
          bundle lock --update
          git add Gemfile.lock

          if git diff --cached --exit-code; then
            echo "No changes to commit, exiting."
            exit 0
          fi

          git commit -m "bundle update"
          echo "has_update=true" >> $GITHUB_ENV

      - name: Push branch
        if: env.has_update == 'true'
        run: git push origin HEAD

      - name: Create Pull Request
        if: env.has_update == 'true'
        env:
          GH_TOKEN: ${{ secrets.DEPENDABOT_MERGE_GH_TOKEN }}
        run: |
          gh pr create \
            --title 'bundle update (`/Gemfile`)' \
            --body "Automated bundle update" \
            --head "$(git rev-parse --abbrev-ref HEAD)" \
            --base "${{ github.event.repository.default_branch }}"