# frozen_string_literal: true

module Mina
  class Runner
    attr_reader :commands, :backend

    include Configuration::DSL

    def initialize(commands, backend)
      fail 'You must specify execution mode' if execution_mode.nil?

      @backend = backend
      @commands = commands
    end

    def run
      Mina::Runner.const_get(class_name_for(execution_mode)).new(script).run
    end

    def execution_mode
      @execution_mode ||=
        if fetch(:simulate)
          :printer
        else
          fetch(:execution_mode)
        end
    end

    private

    def script
      Mina::Backend.const_get(class_name_for(backend)).new(commands).prepare
    end

    def class_name_for(symbol)
      symbol.to_s.split('_').map(&:capitalize).join
    end
  end
end