mjacobus / carrasco

module Carrasco

  class CommandBuilder

    def from_config(config)

      config = Thor::CoreExt::HashWithIndifferentAccess.new(config)

      klass = Class.new(Thor)

      build_commands(config[:commands] || [], klass)

      build_grups(config[:groups] || [], klass)

      klass

    end

    def inject_command_into_class(command, klass)

      klass.desc(command.help, command.description)

      klass.class_eval do

        define_method(command.command_name) do

          execute_command(command)

        end

      end

    end

    private

    def build_commands(commands, klass)

      commands.each do |method, options|

        command = Command.new(method, options)

        inject_command_into_class(command, klass)

      end

    end

    def build_grups(groups, klass)

      groups.each do |group_name, options|

        Group.new(group_name, options).inject_into_class(klass)

      end

    end