class Dry::Schema::Step

def call(result)
  scoped_result = path.equal?(Path::EMPTY) ? result : result.at(path)
  output = executor.(scoped_result)
  scoped_result.replace(output) if output.is_a?(Hash)
  output
end

def initialize(type:, name:, executor:, path: Path::EMPTY)
  @type = type
  @name = name
  @executor = executor
  @path = path
  validate_name(name)
end

def scoped(parent_path)
  self.class.new(
    type: type,
    name: name,
    executor: executor,
    path: Path.new([*parent_path, *path])
  )
end

def validate_name(name)
  return if STEPS_IN_ORDER.include?(name)
  raise ArgumentError, "Undefined step name #{name}. Available names: #{STEPS_IN_ORDER}"
end