name: uv-lock-sync

# Runs after Renovate bumps pyproject.toml on its branch.
# Renovate's pep621 manager updates pyproject.toml but does not know how
# to regenerate uv.lock — this workflow fills that gap.

on:
  push:
    branches:
      - renovate/**

jobs:
  sync:
    name: Sync uv.lock
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - uses: actions/checkout@v4
        with:
          # Use the default GITHUB_TOKEN — has write access to the branch
          # that Renovate already pushed to.
          token: ${{ secrets.GITHUB_TOKEN }}
          ref: ${{ github.ref }}

      - name: Install uv
        uses: astral-sh/setup-uv@v4

      - name: Regenerate uv.lock
        run: uv lock

      - name: Commit if uv.lock changed
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add uv.lock
          git diff --staged --quiet && echo "uv.lock unchanged" || (
            git commit -m "chore: sync uv.lock after Renovate bump" &&
            git push
          )