# frozen_string_literal: true

module DjiMqttConnect
  module Utils
    module MessageParsing
      private

      def message_class_from_method_value(parsed_message, generic_class)
        message_method = parsed_message["method"]
        return generic_class if message_method.blank?

        # update_topo => UpdateTopo
        classified_method = message_method.split("_").collect! { |w| w.capitalize }.join

        # UpdateTopo => DjiMqttConnect::Sys::Product::UpdateTopoStatusMessage
        module_prefix, joiner, class_suffix = generic_class.name.rpartition("::")
        message_class_name = [module_prefix, joiner, classified_method, class_suffix].join

        # Constantize an instance of the message-specific class, or fallback to a generic message
        ActiveSupport::Inflector.safe_constantize(message_class_name) || generic_class
      end
    end
  end
end