NullVoxPopuli/meshchat

# frozen_string_literal: true
module Meshchat
  module Ui
    module Command
      class Ping < Command::Base
        def self.description
          'pings a particular user'
        end

        def handle
          if command_valid?
            msg = _message_factory.create(Network::Message::PING)

            field, value = parse_ping_command

            node =
              if field == 'location'
                Node.find_by_location_on_network(lookup_value)
              else
                Node.find_by_alias_name(lookup_value)
              end

            location = node.try(:location)

            unless location
              return Display.alert "#{lookup_value} could not be found"
            end

            _message_dispatcher.send_message(node: node, message: msg)
          else
            Display.alert usage
          end
        end

        def usage
          'Usage: /ping {field} {value}  e.g.: /ping alias neurotek or /ping location 10.10.10.10:8080'
        end

        def lookup_field
          sub_command
        end

        def lookup_value
          value = command_args.last
          value if value != sub_command
        end

        def command_valid?
          parse_ping_command.compact.length == 2
        end

        def parse_ping_command
          @parsed_args ||=
            if lookup_field == 'location' || lookup_field == 'alias'
              [lookup_field, lookup_value]
            elsif lookup_field =~ /(?:[0-9]{1,3}\.){3}[0-9]{1,3}/
              ['location', lookup_field]
            else
              ['alias', lookup_field]
            end
        end
      end
    end
  end
end