name: Security

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]
  schedule:
    - cron: '0 6 * * 1'

permissions:
  contents: read

jobs:
  secret-scan:
    name: Secret Scan
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      # Push and pull_request scan only the commits they bring: the action picks
      # the range from the event. `base: main` made a push to main rescan the
      # whole history, where Nova's own Infura keys (removed from the files in
      # #72, still live and public upstream) kept this job red on every push
      # since September, so a new leak would have looked like the old red.
      - name: TruffleHog Secret Scan (new commits)
        if: github.event_name != 'schedule'
        uses: trufflesecurity/trufflehog@e76dff8a7e57d6df0c60ad8cbf5d5cba505a8fc9 # v3.99.2
        with:
          path: ./
          version: 3.99.2
          extra_args: --only-verified

      # The weekly run checks what is in the tree today, not the history.
      - name: TruffleHog Secret Scan (current tree)
        if: github.event_name == 'schedule'
        run: |
          mkdir -p "$RUNNER_TEMP/tree"
          git archive HEAD | tar -x -C "$RUNNER_TEMP/tree"
          docker run --rm -v "$RUNNER_TEMP/tree:/tree" ghcr.io/trufflesecurity/trufflehog:3.99.2 \
            filesystem /tree --fail --no-update --github-actions --only-verified

  hardcoded-secrets:
    name: Hardcoded Secret Detection
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Scan for hardcoded secrets
        run: |
          FOUND=0

          echo "Checking for private keys in config files..."
          # "account" fields hold public 32-byte account IDs (balance-test fixtures), not private keys
          if grep -rn --include="*.json" --include="*.py" -E "(0x[a-fA-F0-9]{64}|-----BEGIN.*PRIVATE)" . | grep -v node_modules | grep -v "chainId\|genesisHash\|parentId\|currencyIdScale\|typeAlias\|signedExtensions\|\"account\":"; then
            echo "::error::Possible private key found"
            FOUND=1
          fi

          echo "Checking for hardcoded credentials..."
          if grep -rn --include="*.py" --include="*.json" -iE "(password|secret_key|api_key)\s*[:=]\s*['\"][^'\"]{8,}" . | grep -v node_modules; then
            echo "::error::Possible hardcoded credential found"
            FOUND=1
          fi

          if [ "$FOUND" -eq 0 ]; then
            echo "No hardcoded secrets found."
          else
            exit 1
          fi

  dependency-review:
    name: Dependency Review
    runs-on: ubuntu-latest
    if: github.event_name == 'pull_request'

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Dependency Review
        uses: actions/dependency-review-action@v4
        with:
          fail-on-severity: high
          deny-licenses: GPL-3.0, AGPL-3.0
          # TruffleHog (AGPL-3.0) is run unmodified as a CI scanner; it is not
          # linked into or shipped with anything, so the licence's obligations
          # do not reach this repository. Only this package is exempt.
          allow-dependencies-licenses: pkg:githubactions/trufflesecurity/trufflehog