mjacobus / carrasco

module Carrasco

  class Group

    InvalidGroupError = Class.new(StandardError)

    attr_reader :command_name, :commands, :description, :help, :break_on_failure

    def initialize(group_name, options = {})

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

      @command_name     = group_name

      @help             = options[:help] || command_name

      @description      = options[:description] || "description not given"

      @break_on_failure = options[:break_on_failure]

      @break_on_failure = true if break_on_failure.nil?

      @commands         = options.fetch('commands') do

        raise InvalidGroupError, "Commands not provided for group '#{group_name}'"

      end

    end

    def inject_into_class(klass)

      group = self

      klass.desc(help, description)

      klass.class_eval do

        define_method(group.command_name) do

          execute_commands(group.commands, group.break_on_failure)

        end

      end

    end