name: CodeQL (SAST)

on:
  push:
    branches: [main, develop]
  pull_request:
    branches: [main, develop]
  schedule:
    # Every Sunday at 02:00 UTC — catches CVEs disclosed during the week
    - cron: '0 2 * * 0'

permissions:
  contents: read
  security-events: write
  actions: read

concurrency:
  group: codeql-${{ github.ref }}
  cancel-in-progress: true

jobs:
  analyze:
    name: Analyze ${{ matrix.language }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        language: [javascript-typescript]

    steps:
      - uses: actions/checkout@v4

      - name: Initialize CodeQL
        uses: github/codeql-action/init@v3
        with:
          languages: ${{ matrix.language }}
          # OWASP top-10 + injection + auth flaws + prototype pollution
          queries: security-extended,security-and-quality

      - name: Autobuild
        uses: github/codeql-action/autobuild@v3

      - name: Perform analysis
        uses: github/codeql-action/analyze@v3
        with:
          category: /language:${{ matrix.language }}
          # GitHub Advanced Security dashboard upload requires paid plan.
          # SARIF saved as a downloadable artifact instead.
          upload: false
          output: /tmp/codeql-results

      - name: Upload SARIF as artifact
        uses: actions/upload-artifact@v4
        continue-on-error: true
        with:
          name: codeql-sarif-${{ matrix.language }}
          path: /tmp/codeql-results/*.sarif
          retention-days: 7