name: ci

on:
  push:
    branches: [main]
  pull_request:
  # A CVE published after a merge is still our problem, so rescan daily.
  schedule:
    - cron: "0 4 * * *"
  workflow_dispatch:

permissions:
  contents: read

# A push supersedes the run of the commit before it, so drop that one instead of
# waiting for a verdict on code nobody has any more.
concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

jobs:
  go:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - uses: actions/setup-go@v7
        with:
          go-version-file: go.mod
      - run: gofmt -l cmd lib | tee /dev/stderr | (! read -r)
      - run: go mod tidy -diff
      - run: go vet ./...
      - run: go test -race ./...
      - run: make build
      # Read from a plain file so the upstream-sync workflow can bump it without a
      # token carrying the workflow scope.
      - id: lint-version
        run: echo "version=$(cat hack/golangci-lint.version)" >> "$GITHUB_OUTPUT"
      - uses: golangci/golangci-lint-action@v9
        with:
          version: ${{ steps.lint-version.outputs.version }}

  security:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      # Reachability-aware, so it only fails on vulnerabilities we actually call.
      # It installs its own Go, hence no setup-go step; go-version-input must be
      # cleared or it collides with go-version-file.
      - uses: golang/govulncheck-action@v1.1.0
        with:
          repo-checkout: false
          go-version-file: go.mod
          go-version-input: ""
      - uses: aquasecurity/trivy-action@v0.36.0
        with:
          scan-type: fs
          scan-ref: .
          scanners: vuln,secret
          format: table
          exit-code: "1"
          ignore-unfixed: true
          severity: CRITICAL,HIGH

  image:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - uses: docker/setup-buildx-action@v4
      - uses: docker/build-push-action@v7
        with:
          context: .
          push: false
          load: true
          tags: routingtabletowg:ci
          cache-from: type=gha
          cache-to: type=gha,mode=max
      - uses: aquasecurity/trivy-action@v0.36.0
        with:
          image-ref: routingtabletowg:ci
          format: table
          exit-code: "1"
          ignore-unfixed: true
          severity: CRITICAL,HIGH