# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

name: Vulnerability Scan

on:
  workflow_dispatch:
  release:
  push:
    branches: [ "main" ]
  pull_request:
    # The branches below must be a subset of the branches above
    branches: [ "main" ]
  schedule:
    - cron: '00 9 * * 1'

permissions:
  contents: read

jobs:

  version:
    runs-on: ubuntu-latest
    outputs:
      versions: ${{ steps.version.outputs.TAGS }}
    steps:
      - name: Checkout code
        uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
        with:
          fetch-depth: 0

      - name: Latest Tag
        id: version
        shell: bash
        run: |
          readarray -t TAGS_ARRAY <<<"$(git tag --list 'controller-v*.*.*' --sort=-version:refname | grep -v 'beta\|alpha')"
          echo "${TAGS_ARRAY[0]},${TAGS_ARRAY[1]},${TAGS_ARRAY[2]}"
          TAGS_JSON="[\"${TAGS_ARRAY[0]}\",\"${TAGS_ARRAY[1]}\",\"${TAGS_ARRAY[2]}\"]"
          echo "${TAGS_JSON}"
          echo "::set-output name=TAGS::${TAGS_JSON}"

  scan:
    runs-on: ubuntu-latest
    needs:     version
    strategy:
      matrix:
        versions: ${{ fromJSON(needs.version.outputs.versions) }}
    steps:

    - shell: bash
      id: test
      run: echo "Scanning registry.k8s.io/ingress-nginx/controller@${{ matrix.versions }}"

    - name: Scan image with AquaSec/Trivy
      id: scan
      if: inputs.RUN_TRIVY == 'true'
      uses: aquasecurity/trivy-action@0105373003c89c494a3f436bd5efc57f3ac1ca20 #v0.5.1
      with:
        image-ref: registry.k8s.io/ingress-nginx/controller@${{ matrix.versions }}
        format: 'sarif'
        output: trivy-results-${{ matrix.versions }}.sarif
        exit-code: 0
        vuln-type: 'os,library'
        severity: 'CRITICAL,HIGH,MEDIUM,LOW,UNKNOWN'

    # This step checks out a copy of your repository.
    - name: Upload SARIF file
      uses: github/codeql-action/upload-sarif@0c670bbf0414f39666df6ce8e718ec5662c21e03
      with:
        # Path to SARIF file relative to the root of the repository
        sarif_file: trivy-results-${{ matrix.versions }}.sarif

    - name: Image Vulnerability scan output
      env:
        TRIVY_COUNT: ${{ steps.trivy-scan.outputs.TRIVY_COUNT }}
      run: |
        echo "Image Vulnerability scan output" >> $GITHUB_STEP_SUMMARY
        echo "Image ID: registry.k8s.io/ingress-nginx/controller@${{ matrix.versions }}" >> $GITHUB_STEP_SUMMARY
        echo "" >> $GITHUB_STEP_SUMMARY
        echo "Trivy Count: $TRIVY_COUNT" >> $GITHUB_STEP_SUMMARY