module Munge
  module Cli
    module Commands
      class Server
        def initialize(bootloader)
          @bootloader = bootloader
          @listener   = listener
        end

        def call
          @listener.start

          system("munge build")

          system("munge view")
        rescue Interrupt
          @listener.stop
        end

        private

        def listener
          require "listen"

          listen = Listen.to(@bootloader.root_path) do
            system("munge build")
          end

          ignore(listen, ENV["BUILD_ROOT"])
          ignore(listen, @bootloader.config[:output_path])

          listen
        end

        def ignore(listener, pattern)
          if pattern
            listener.ignore(/^#{pattern}/)
          end
        end
      end
    end
  end
end