class EacRubyUtils::OptionsConsumer

def consume(key, default_value = nil, &block)
  return default_value unless data.key?(key)
  value = data.delete(key)
  value = yield(value) if block
  value
end

def consume_all(*keys)
  options = consume_all_extract_options(keys)
  result = consume_all_build_result(keys, options.fetch(:ostruct))
  validate if options.fetch(:validate)
  result
end

def consume_all_build_result(keys, ostruct)
  if ostruct
    ::OpenStruct.new(keys.index_with { |key| consume(key) }) # rubocop:disable Style/OpenStructUse
  else
    keys.map { |key| consume(key) }
  end
end

def consume_all_extract_options(keys)
  options = DEFAULT_OPTIONS
  options = options.merge(keys.pop.with_indifferent_access) if keys.last.is_a?(Hash)
  options
end

def initialize(data)
  @data = data.with_indifferent_access
end

def left_data
  data.dup
end

def validate
  return if data.empty?
  raise "Invalid keys: #{data.keys}"
end