name: Lua syntax

on:
  push:
  pull_request:
    branches:
      - main

jobs:
  syntax:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Lua 5.1
        run: |
          sudo apt-get update
          sudo apt-get install -y lua5.1

      - name: Parse Lua files
        shell: bash
        run: |
          set -euo pipefail
          while IFS= read -r -d '' file; do
            echo "Checking $file"
            luac5.1 -p "$file"
          done < <(find . -type f -name '*.lua' -print0)

      - name: Validate Guda.toc paths
        shell: python
        run: |
          from pathlib import Path

          root = Path('.')
          missing = []
          for raw in Path('Guda.toc').read_text(encoding='utf-8').splitlines():
              line = raw.strip()
              if not line or line.startswith('#'):
                  continue
              path = root / line.replace('\\', '/')
              if not path.is_file():
                  missing.append(line)

          if missing:
              raise SystemExit('Missing TOC files:\n' + '\n'.join(missing))

          print('Guda.toc integrity OK')