name: Format

on:
  push:
    branches:
      - "**"
  pull_request:

jobs:
  gofmt:
    name: gofmt
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
          cache: true

      - name: Verify formatting
        shell: bash
        run: |
          files="$(gofmt -l .)"
          if [[ -n "${files}" ]]; then
            echo "These files need formatting:"
            echo "${files}"
            exit 1
          fi