ci.yml

name: CI

on:
  push:
  pull_request:

permissions:
  contents: read

jobs:
  go-lint:
    if: github.event_name == 'push' || github.event.pull_request.head.repo.id != github.event.pull_request.base.repo.id
    name: Go Lint
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Setup Go
        id: setup-go
        uses: ./.github/actions/setup-go
        with:
          cache-prefix: go-lint

      - name: Compute tools cache info
        id: tools-cache-info
        run: |
          echo path=$(go env GOPATH)/bin >> $GITHUB_OUTPUT
          echo make-hash=$(make -n install-tools | sha256sum | cut -d' ' -f1) >> $GITHUB_OUTPUT

      - name: Setup tools cache
        uses: actions/cache@v4
        id: tools-cache
        with:
          path: ${{ steps.tools-cache-info.outputs.path }}
          key: tools-go-${{ steps.setup-go.outputs.go-version }}-make-${{ steps.tools-cache-info.outputs.make-hash }}

      - name: Install tools
        if: steps.tools-cache.outputs.cache-hit != 'true'
        env:
          GOCACHE: /tmp/tools/go-build
          GOMODCACHE: /tmp/tools/go-mod
        run: make install-tools

      - name: Check formatting
        run: gofmt -l . | wc -l | xargs -I {} test {} -eq 0 || (gofmt -l . && exit 1)

      - name: Check module files
        run: |
          go mod tidy
          modified=$(git ls-files --modified -- go.{mod,sum})
          if [ -n "$modified" ]; then
            for file in $modified; do
              echo "::error file=$file::$file is not up to date (hint: run \"go mod tidy\" to fix this)"
            done
            exit 1
          fi

      - name: Compute golangci-lint cache info
        id: golangci-lint-cache-info
        run: |
          version_regex=" v([0-9]+\.[0-9]+\.[0-9]+) "
          [[ "$(golangci-lint version)" =~ $version_regex ]]
          echo version=${BASH_REMATCH[1]} >> $GITHUB_OUTPUT
          cache_regex='Dir: (.*)\n'
          [[ "$(golangci-lint cache status)" =~ $cache_regex ]]
          echo path=${BASH_REMATCH[1]} >> $GITHUB_OUTPUT

      - name: Setup golangci-lint cache
        uses: actions/cache@v4
        with:
          path: ${{ steps.golangci-lint-cache-info.outputs.path }}
          key: golangci-lint-${{ steps.golangci-lint-cache-info.outputs.version }}-go-${{ steps.setup-go.outputs.go-version }}-mod-${{ hashFiles('go.sum') }}

      - name: Run golangci-lint
        run: make go-lint