name: Trivy Security Scan

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master
  schedule:
    # Run every 3 months (quarterly) on the 1st day at 00:00 UTC
    # Months: January (1), April (4), July (7), October (10)
    - cron: '0 0 1 1,4,7,10 *'
  workflow_dispatch: # Allow manual trigger

permissions:
  contents: read
  security-events: write # Required for uploading SARIF results

jobs:
  trivy-scan:
    name: Trivy Security Scan
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - name: Run Trivy vulnerability scanner (source code)
        uses: aquasecurity/trivy-action@0.33.1
        with:
          scan-type: 'fs'
          scan-ref: '.'
          scanners: 'vuln,secret,misconfig'
          format: 'sarif'
          output: 'trivy-results.sarif'
          severity: 'CRITICAL,HIGH,MEDIUM'
          ignore-unfixed: true

      - name: Upload Trivy results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v4
        if: always()
        with:
          sarif_file: 'trivy-results.sarif'

      - name: Run Trivy scanner (table output for logs)
        uses: aquasecurity/trivy-action@0.33.1
        if: always()
        with:
          scan-type: 'fs'
          scan-ref: '.'
          scanners: 'vuln,secret,misconfig'
          format: 'table'
          severity: 'CRITICAL,HIGH,MEDIUM'
          ignore-unfixed: true
          exit-code: '1'