license_check.yml

name: License Check
on:
  workflow_call: {}
  workflow_dispatch: {}

jobs:
  license-check:
    name: License Check
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
      - name: Check License Headers
        shell: bash
        run: |
          set -euo pipefail

          search_dirs=()
          for dir in src include bridge cpp-example-collection; do
            if [[ -d "$dir" ]]; then
              search_dirs+=("$dir")
            fi
          done

          if [[ ${#search_dirs[@]} -eq 0 ]]; then
            echo "No source directories found to validate."
            exit 1
          fi

          mapfile -t files < <(find "${search_dirs[@]}" -type f \( -name '*.cpp' -o -name '*.h' -o -name '*.hpp' \) | LC_ALL=C sort)
          if [[ ${#files[@]} -eq 0 ]]; then
            echo "No source files found to validate."
            exit 1
          fi

          failed=0
          for file in "${files[@]}"; do
            if ! grep -Eq 'Copyright [0-9]{4}(-[0-9]{4})? LiveKit(, Inc\.)?$' "$file"; then
              echo "Missing or unexpected copyright header in $file"
              failed=1
            fi
            if ! grep -Fq 'Licensed under the Apache License, Version 2.0' "$file"; then
              echo "Missing Apache 2.0 header in $file"
              failed=1
            fi
          done

          exit "$failed"