name: "CodeQL"

on:
  push:
    branches: ["main"]
  pull_request:
    branches: ["main"]
  schedule:
    - cron: "0 4 * * 0"

permissions:
  contents: read

jobs:
  detect-languages:
    name: Detect CodeQL languages
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Build language matrix
        id: set-matrix
        run: |
          include='[{"language":"actions","build-mode":"none"}]'

          if git ls-files '*.py' | grep -q .; then
            include='[{"language":"actions","build-mode":"none"},{"language":"python","build-mode":"none"}]'
          fi

          echo "matrix={\"include\":$include}" >> "$GITHUB_OUTPUT"

  analyze:
    name: Analyze (${{ matrix.language }})
    needs: detect-languages
    runs-on: ubuntu-latest
    permissions:
      actions: read
      contents: read
      security-events: write
    strategy:
      fail-fast: false
      matrix: ${{ fromJSON(needs.detect-languages.outputs.matrix) }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Initialize CodeQL
        uses: github/codeql-action/init@v4
        with:
          languages: ${{ matrix.language }}
          build-mode: ${{ matrix['build-mode'] }}

      - name: Perform CodeQL Analysis
        uses: github/codeql-action/analyze@v4
        with:
          category: /language:${{ matrix.language }}