# Dependency vulnerability scanning, deliberately not a PR gate: a CVE published
# overnight is not actionable in whatever PR happens to trip it, so scanning
# every PR just makes unrelated work go red. It runs on a schedule and when
# dependency manifests change on main; a finding fails the run, which is the
# signal to bump the dependency in its own PR.
#
# govulncheck covers the Go standard library, which Trivy does not, and traces
# each finding through the call graph. Each gate fails on what a version bump
# can fix; a finding with no fix yet is listed for review instead.
name: Security

on:
  schedule:
    - cron: "0 6 * * 1" # Monday 06:00 UTC
  workflow_dispatch:
  push:
    branches: [main]
    paths:
      - "go.mod"
      - "go.sum"
      - "**/pnpm-lock.yaml"
      - "**/package-lock.json"
      - "**/Cargo.lock"
      - "realtime/mix.lock"
      - "scripts/govulncheck-gate.sh"
      - "scripts/hex-audit-gate.sh"

permissions:
  contents: read

jobs:
  govulncheck:
    name: Go Vulnerabilities
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

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

      # Fails on a called vulnerability with a fixed version. Both builds are
      # checked, since the Kafka codec sits behind a build tag.
      - name: Run govulncheck
        run: |
          ./scripts/govulncheck-gate.sh ./...
          ./scripts/govulncheck-gate.sh -tags kafka ./...

  trivy:
    name: Dependency Scan
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      # ignore-unfixed is deliberately not set: an advisory with no upstream
      # fix still needs a recorded decision.
      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@v0.36.0
        with:
          scan-type: "fs"
          scan-ref: "."
          severity: "CRITICAL,HIGH"
          exit-code: "1"
          trivyignores: ".trivyignore"

  node:
    name: Node Dependencies
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        tree: [web, admin, site, docs, forms]
    steps:
      - uses: actions/checkout@v4
      - uses: ./.github/actions/setup-pnpm
        with:
          working-directory: ${{ matrix.tree }}
      - name: Audit ${{ matrix.tree }}
        working-directory: ${{ matrix.tree }}
        # Production dependencies only: a devDependency advisory cannot be
        # reached by anything a visitor can send, and gating releases on the
        # transitive dependencies of eslint is how a scanner gets ignored.
        run: pnpm audit --audit-level=high --prod

  rust:
    name: Rust Dependencies
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: rustsec/audit-check@v2
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          working-directory: tracking

  elixir:
    name: Elixir Dependencies
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: realtime
    steps:
      - uses: actions/checkout@v4
      - uses: erlef/setup-beam@v1
        with:
          elixir-version: "1.18"
          otp-version: "27"
      - name: Install dependencies
        run: mix deps.get
      # Fails on a retired dependency or a flagged one with a newer release.
      - name: Audit realtime
        run: ../scripts/hex-audit-gate.sh