pre-commit-auto-update.yml

name: pre-commit autoupdate

on:
  schedule:
    - cron: "0 3 * * 1" # weekly, Monday 03:00 UTC
  workflow_dispatch:

jobs:
  autoupdate:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v6

      - name: Set up Python
        uses: actions/setup-python@v6
        with:
          python-version: "3.14"

      - name: Install pre-commit
        run: pip install --upgrade pre-commit

      - name: Run autoupdate
        id: autoupdate
        run: |
          set -e

          pre-commit autoupdate

          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

          git add .pre-commit-config.yaml || true

          if git diff --cached --quiet; then
            echo "changes=false" >> $GITHUB_OUTPUT
          else
            git commit -m "chore: autoupdate pre-commit hooks" || true
            echo "changes=true" >> $GITHUB_OUTPUT
          fi

      - name: Create Pull Request
        if: steps.autoupdate.outputs.changes == 'true'
        uses: peter-evans/create-pull-request@v8
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: "chore: autoupdate pre-commit hooks"
          title: "chore: autoupdate pre-commit hooks"
          body: |
            Automated update of pre-commit hook versions.

            Please review hook changelogs before merging.
          branch: pre-commit-autoupdate
          delete-branch: true
          labels: chore,dependencies