feat: more voice state filters

lib/discordrb/container.rb

@@ -300,6 +300,9 @@ def channel_recipient_remove(attributes = {}, &block)
     # @option attributes [true, false] :deaf Matches whether or not the user is deafened server-wide.
     # @option attributes [true, false] :self_mute Matches whether or not the user is muted by the bot.
     # @option attributes [true, false] :self_deaf Matches whether or not the user is deafened by the bot.
+    # @option attributes [true, false] :connected Matches whether or not the user is newly connecting to voice.
+    # @option attributes [true, false] :disconnected Matches whether or not the user is no longer connected to any voice channel.
+    # @option attributes [true, false] :moved Matches whether or not the user moved to a different voice channel.
     # @yield The block is executed when the event is raised.
     # @yieldparam event [VoiceStateUpdateEvent] The event that was raised.
     # @return [VoiceStateUpdateEventHandler] the event handler that was registered.

lib/discordrb/events/voice_state_update.rb

@@ -99,6 +99,30 @@ def matches?(event)
                else
                  e
                end
+        end,
+        matches_all(@attributes[:connected], event.old_channel) do |a, e|
+          case a
+          when TrueClass
+            e.nil?
+          when FalseClass
+            !e.nil?
+          end
+        end,
+        matches_all(@attributes[:disconnected], event.channel) do |a, e|
+          case a
+          when TrueClass
+            e.nil?
+          when FalseClass
+            !e.nil?
+          end
+        end,
+        matches_all(@attributes[:moved], event) do |a, e|
+          case a
+          when TrueClass
+            (e.channel && e.old_channel) && e.channel != e.old_channel
+          when FalseClass
+            !((e.channel && e.old_channel) && e.channel != e.old_channel)
+          end
         end
       ].reduce(true, &:&)
     end