class Jets::Commands::RakeCommand

def formatted_rake_tasks(all=false)
  rake_tasks(all).map do |t|
    comment = "# #{t.comment}" if t.comment
    [ t.name_with_args, comment ]
  end
end

def help_message(namespaced_command)
  task = rake_tasks(true).find { |t| t.name == namespaced_command }
  message = "Help provided by rake task:\n\n"
  message << "jets #{task.name_with_args.dup}\n"
  message << "    #{task.full_comment}"
  message
end

def namespaced_commands
  formatted_rake_tasks(true).map(&:first)
end

def perform(namespaced_command, thor_args)
  if thor_args.first == "help"
    puts help_message(namespaced_command)
    return
  end
  require_rake
  ARGV.unshift(namespaced_command) # Prepend the task, so Rake knows how to run it.
  rake.standard_exception_handling do
    rake.init("jets")
    rake.load_rakefile
    rake.top_level
  end
end

def rake
  Rake.application
end

def rake_tasks(all=false)
  require_rake
  Rake::TaskManager.record_task_metadata = true
  rake.instance_variable_set(:@name, "jets")
  Jets::Commands::RakeTasks.load!
  tasks = rake.tasks
  tasks = tasks.select(&:comment) unless all
  tasks
end

def require_rake
  require "rake" # Defer booting Rake until we know it's needed.
end