name: Proto CI
on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install buf
        uses: bufbuild/buf-setup-action@v1

      - name: Lint protos
        run: buf lint

      - name: Check breaking changes
        if: github.event_name == 'pull_request'
        run: buf breaking --against '.git#branch=main'