---
# This workflow is centrally managed in https://github.com/<organization>/.github/
# Don't make changes to this file in this repo as they will be overwritten with changes made to the same file in
# the above-mentioned repo.

# This workflow will analyze all supported languages in the repository using CodeQL Analysis.

name: "CodeQL"
permissions:
  contents: read

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master
  schedule:
    - cron: '00 12 * * 0'  # every Sunday at 12:00 UTC

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

jobs:
  languages:
    name: Get language matrix
    outputs:
      matrix: ${{ steps.lang.outputs.result }}
      continue: ${{ steps.continue.outputs.result }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Get repo languages
        id: lang
        uses: actions/github-script@v7
        with:
          script: |
            // CodeQL supports the following:
            // ['actions', 'c', 'cpp', 'csharp', 'go', 'java', 'javascript', 'kotlin', 'python', 'ruby', 'swift']

            // Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
            const supported_languages = [
              'cpp',
              'csharp',
              'go',
              'java',
              'javascript',
              'python',
              'ruby',
              'swift',
            ]

            const remap_languages = {
              'c': 'cpp',
              'c++': 'cpp',
              'c#': 'csharp',
              'kotlin': 'java',
              'typescript': 'javascript',
            }

            const repo = context.repo
            const response = await github.rest.repos.listLanguages(repo)
            let matrix = {
              "include": []
            }

            // Track languages we've already added to avoid duplicates
            const addedLanguages = new Set()

            // Check if workflow files exist to determine if we should add actions language
            const fs = require('fs');
            const hasYmlFiles = fs.existsSync('.github/workflows') &&
            fs.readdirSync('.github/workflows').some(file => file.endsWith('.yml') || file.endsWith('.yaml'));

            // Add actions language if workflow files exist
            if (hasYmlFiles) {
              console.log('Found GitHub Actions workflow files. Adding actions to the matrix.');
              matrix['include'].push({
                "category": "/language:actions",
                "language": "actions",
                "name": "actions",
                "os": "ubuntu-latest",
                "build-mode": "none",
              });
            }

            for (let [key, value] of Object.entries(response.data)) {
              // remap language
              if (remap_languages[key.toLowerCase()]) {
                console.log(`Remapping language: ${key} to ${remap_languages[key.toLowerCase()]}`)
                key = remap_languages[key.toLowerCase()]
              }

              const normalizedKey = key.toLowerCase()

              if (supported_languages.includes(normalizedKey) && !addedLanguages.has(normalizedKey)) {
                // Mark this language as added
                addedLanguages.add(normalizedKey)

                console.log(`Found supported language: ${normalizedKey}`)
                let osList = ['ubuntu-latest'];
                if (normalizedKey === 'swift') {
                  osList = ['macos-latest'];
                }
                for (let os of osList) {
                  // set name for matrix
                  let name = osList.length === 1 ? normalizedKey : `${normalizedKey}, ${os}`

                  // set category for matrix
                  let category = `/language:${normalizedKey}`
                  let build_mode = 'none';

                  // Set build mode based on language
                  switch (normalizedKey) {
                    case 'csharp':
                      build_mode = 'autobuild'
                      break
                    case 'go':
                      build_mode = 'autobuild'
                      break
                    case 'java':
                      build_mode = 'autobuild'
                      break
                    default:
                      build_mode = 'none'
                  }

                  // add to matrix
                  matrix['include'].push({
                    "category": category,
                    "language": normalizedKey,
                    "name": name,
                    "os": os,
                    "build-mode": build_mode,
                  })
                }
              }
            }

            // print languages
            console.log(`matrix: ${JSON.stringify(matrix)}`)

            return matrix

      - name: Continue
        id: continue
        uses: actions/github-script@v7
        with:
          script: |
            // if matrix['include'] is an empty list return false, otherwise true
            const matrix = ${{ steps.lang.outputs.result }}  // this is already json encoded

            if (matrix['include'].length == 0) {
              return false
            } else {
              return true
            }

  analyze:
    name: Analyze (${{ matrix.name }})
    if: needs.languages.outputs.continue == 'true'
    env:
      GITHUB_CODEQL_BUILD: true
    needs: languages
    permissions:
      actions: read
      contents: read
      security-events: write
    runs-on: ${{ matrix.os || 'ubuntu-latest' }}
    strategy:
      fail-fast: false
      matrix: ${{ fromJson(needs.languages.outputs.matrix) }}
    timeout-minutes: ${{ (matrix.language == 'swift' && 120) || 60 }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          submodules: recursive

      # Initializes the CodeQL tools for scanning.
      - name: Initialize CodeQL
        uses: github/codeql-action/init@v3
        with:
          languages: ${{ matrix.language }}
          # If you wish to specify custom queries, you can do so here or in a config file.
          # By default, queries listed here will override any specified in a config file.
          # Prefix the list here with "+" to use these queries and those in the config file.

          # yamllint disable-line rule:line-length
          # For more details on CodeQL's query packs, refer to: https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-code-scanning#using-queries-in-ql-packs
          # queries: security-extended,security-and-quality
          config: |
            paths-ignore:
              - build
              - node_modules
              - third-party
          build-mode: ${{ matrix.build-mode || 'none' }}

      # Autobuild attempts to build any compiled languages (C/C++, C#, Go, Java, or Swift).
      - name: Autobuild
        if: matrix.build-mode == 'autobuild'
        uses: github/codeql-action/autobuild@v3

      - name: Perform CodeQL Analysis
        uses: github/codeql-action/analyze@v3
        with:
          category: "${{ matrix.category }}"
          output: sarif-results
          upload: failure-only

      - name: filter-sarif
        uses: advanced-security/filter-sarif@v1
        with:
          input: sarif-results/${{ matrix.language }}.sarif
          output: sarif-results/${{ matrix.language }}.sarif
          patterns: |
            -build/**
            -node_modules/**
            -third\-party/**

      - name: Upload SARIF
        uses: github/codeql-action/upload-sarif@v3
        with:
          category: "${{ matrix.category }}"
          sarif_file: sarif-results/${{ matrix.language }}.sarif

      - name: Upload loc as a Build Artifact
        uses: actions/upload-artifact@v4
        with:
          name: sarif-results-${{ matrix.language }}-${{ runner.os }}
          path: sarif-results
          if-no-files-found: error
          retention-days: 1