name: CI

on:
  push:
    branches: [ main, master ]
  pull_request:

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

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version: "1.24"

      - name: Go module cache
        uses: actions/cache@v4
        with:
          path: |
            ~/go/pkg/mod
            ~/.cache/go-build
          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-

      - name: Check formatting
        run: |
          gofmt -l . | tee /tmp/gofmt.txt
          if [ -s /tmp/gofmt.txt ]; then
            echo "The following files need gofmt:"
            cat /tmp/gofmt.txt
            exit 1
          fi

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

      - name: Run tests
        run: go test ./...