name: trivy-scan-image
run-name: Trivy - Scan Docker Image

on:
  workflow_dispatch: # Manuelles Auslösen des Workflows
    inputs:
      image_tag:
        description: 'Tag für das zu scannende Docker-Image z.B. latest'
        required: true
        default: 'latest'
  schedule:
    - cron: '45 1 * * 5'

env:
  image_name: mysteryhelfer
  image_tag: ${{ github.event.inputs.image_tag || 'latest' }}
  registry_gitea: gitea.tebarius.duckdns.org
  user: tebarius

jobs:
  trivy_image_scan:
    runs-on: ubuntu-latest
    container: aquasec/trivy:latest
    steps:
      - name: Scan linux/amd64-image
        run: |
          trivy image \
          --exit-code 1 \
          --scanners vuln,misconfig,secret \
          --severity HIGH,CRITICAL \
          --ignore-unfixed \
          --platform linux/amd64 \
          ${{ env.registry_gitea }}/${{ env.user }}/${{ env.image_name }}:${{ env.image_tag }}
      - name: Scan linux/arm64-image
        run: |
          trivy image \
          --exit-code 1 \
          --scanners vuln,misconfig,secret \
          --severity HIGH,CRITICAL \
          --ignore-unfixed \
          --platform linux/arm64 \
          ${{ env.registry_gitea }}/${{ env.user }}/${{ env.image_name }}:${{ env.image_tag }}

  telegram-notify:
    needs: trivy_image_scan
    if: always()
    runs-on: ubuntu-latest
    steps:
    - name: Telegram Alert
      run: |
        case "${{ needs.trivy_image_scan.result }}" in
            "success")  EMOJI="✅"; MSG="OK" ;;
            "failure")  EMOJI="❌"; MSG="WARN!" ;;
            "cancelled") EMOJI="⏹️"; MSG="Canceled" ;;
            *) EMOJI="❓"; MSG="Unknown-State: ${{ needs.trivy_image_scan.result }}" ;;
        esac
        
        curl -s -X POST "https://api.telegram.org/bot${{ secrets.TELEGRAM_BOT_TOKEN }}/sendMessage" \
        -H 'Content-Type: application/json' \
        -d "{
        \"chat_id\": \"${{ secrets.TELEGRAM_CHAT_ID }}\",
        \"parse_mode\": \"HTML\",
        \"text\": 
        \"$EMOJI <b>$MSG - Scan ${{ env.image_name }}:${{ env.image_tag }}</b>
        <i>$(date +"%Y-%m-%d  %T")</i>
        Trivy-Image-Scan of: <b><i>${{ env.image_name }}:${{ env.image_tag }}</i></b>
        ${{ gitea.server_url }}/${{ gitea.repository }}
        \"
        }"