name: report-on-vulnerabilities
on:
  workflow_dispatch: {}
  schedule:
    - cron: '23 2 * * *' # Every day at 02:23
env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}
jobs:
  scan:
    runs-on: ubuntu-20.04
    permissions:
      contents: read
    outputs:
      results: ${{ steps.parse-results.outputs.results }}
    steps:
    - name: Scan for vulnerabilities
      uses: aquasecurity/trivy-action@9ab158e8597f3b310480b9a69402b419bc03dbd5 # v0.8.0 (Trivy v0.34.0)
      with: 
        image-ref: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
        format: json
        ignore-unfixed: false
        severity: HIGH,CRITICAL
        output: scan.json

    - name: Parse scan results
      id: parse-results
      continue-on-error: true
      run: |
        VULNS=$(cat scan.json | jq '.Results[] | has("Vulnerabilities")')
        if echo $VULNS | grep -q 'true'; then
          echo "Vulnerabilities found, creating issue"
          echo "results=$(cat scan.json)" >> $GITHUB_OUTPUT
        else
          echo "No vulnerabilities found, halting"
          echo "results=nothing" >> $GITHUB_OUTPUT
        fi

    - name: Upload vulnerability scan report
      uses: actions/upload-artifact@83fd05a356d7e2593de66fc9913b3002723633cb # v3.1.1
      if: contains(steps.parse-results.outputs.results, 'SchemaVersion')
      with:
        name: scan.json
        path: scan.json
        if-no-files-found: error

  open-issue:
    runs-on: ubuntu-latest
    if: contains(needs.scan.outputs.results, 'SchemaVersion')
    needs: scan
    steps:
      - uses: actions/checkout@93ea575cb5d8a053eaa0ac8fa3b40d7e05a33cc8 # v3.1.0

      - name: Download scan
        uses: actions/download-artifact@9782bd6a9848b53b110e712e20e42d89988822b7 # v3.0.1
        with:
          name: scan.json

      - name: Set scan output
        id: set-scan-output
        run: echo "results=$(cat scan.json)" >> $GITHUB_OUTPUT

      - uses: JasonEtco/create-an-issue@77399b6110ef82b94c1c9f9f615acf9e604f7f56 # v2.8.1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          RESULTS: ${{ steps.set-scan-output.outputs.results }}
        with:
          filename: .github/VULN_TEMPLATE.md