libinput_command_input.rb

# frozen_string_literal: true

require_relative "../../libinput_command"
require_relative "./input"

module Fusuma
  module Plugin
    module Inputs
      # libinput commands wrapper
      class LibinputCommandInput < Input
        attr_reader :pid

        def config_param_types
          {
            device: [String],
            "enable-dwt": [TrueClass, FalseClass],
            "enable-tap": [TrueClass, FalseClass],
            "show-keycodes": [TrueClass, FalseClass],
            verbose: [TrueClass, FalseClass],
            "libinput-debug-events": [String],
            "libinput-list-devices": [String]
          }
        end

        # @return [IO]
        def io
          @io ||= begin
            reader, writer = create_io
            @pid = command.debug_events(writer)
            reader
          end
        end

        # @return [LibinputCommand]
        def command
          @command ||= LibinputCommand.new(
            libinput_options: libinput_options,
            commands: {
              debug_events_command: debug_events_command,
              list_devices_command: list_devices_command
            }
          )
        end

        # @return [Array]
        def libinput_options
          device = ("--device='#{config_params(:device)}'" if config_params(:device))
          enable_tap = "--enable-tap" if config_params(:"enable-tap")
          enable_dwt = "--enable-dwt" if config_params(:"enable-dwt")
          show_keycodes = "--show-keycodes" if config_params(:"show-keycodes")
          verbose = "--verbose" if config_params(:verbose)
          [
            device,
            enable_dwt,
            enable_tap,
            show_keycodes,
            verbose
          ].compact
        end

        def debug_events_command
          config_params(:"libinput-debug-events")
        end

        def list_devices_command
          config_params(:"libinput-list-devices")
        end

        private

        def create_io
          IO.pipe
        end
      end
    end
  end
end