module RailsAiAdmin::Templates::SafePaths

# File lib/rails_ai_admin/templates/safe_paths.rb, line 8
def self.check!(root, path)
  requested_root = Pathname.new(root).expand_path
  relative = Pathname.new(path).expand_path.relative_path_from(requested_root)
  root = requested_root.realpath
  raise ConfigurationError, "Override path is outside host root" if relative.each_filename.any? { |part| part == ".." }
  parts = relative.each_filename.to_a
  current = root
  parts.each_with_index do |part, index|
    current = current.join(part)
    begin
      stat = current.lstat
    rescue Errno::ENOENT
      next
    end
    if stat.symlink? || index < parts.size - 1 && !stat.directory?
      raise ConfigurationError, "Override path contains a symlink or invalid parent"
    end
  end
  root.join(relative)
end