name: CI

on:
  pull_request:
    branches: [master]

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

      - uses: actions/setup-go@v5
        with:
          go-version-file: go.mod

      - name: Build
        run: go build ./...

      - name: Vet
        run: go vet ./...

      - name: Format check
        run: |
          unformatted=$(gofmt -l $(go list -f '{{.Dir}}' ./...))
          if [ -n "$unformatted" ]; then
            echo "These files need gofmt:"
            echo "$unformatted"
            exit 1
          fi

      - name: Lint
        uses: golangci/golangci-lint-action@v7
        with:
          version: v2.4.0

      - name: Test (race detector)
        run: go test -race ./...