Fix disconnect messages and progress on Configuration stage

apps/amethyst/lib/apps/connection_handler.ex

@@ -81,7 +81,7 @@ alias ElixirSense.Log
         :ok -> state
         {:error, reason} ->
           Logger.error("Error handling packet with ID #{id} in state #{connstate}: #{reason}")
-          send(self(), {:disconnect, "Error handling packet #{id}:\n#{reason}"})
+          send(self(), {:disconnect, "§cError handling packet #{id}:\n#{reason}"})
           state
         newstate ->
           if is_map(newstate) do
@@ -94,7 +94,7 @@ alias ElixirSense.Log
     rescue
       e ->
         Logger.error("Error handling packet with ID #{id} in state #{connstate}: #{Exception.format(:error, e, __STACKTRACE__)}")
-        send(self(), {:disconnect, "Error handling packet #{id}:\n#{e.message}"})
+        send(self(), {:disconnect, "§cError handling packet #{id}:\n#{Exception.format(:error, e, __STACKTRACE__)}"})
         state
     end
   end

apps/amethyst/lib/states/configuration.ex

@@ -25,7 +25,7 @@ defmodule Amethyst.ConnectionState.Configuration do
   """
   Macros.defpacket_clientbound :cookie_request, 0x00, 767, [identifier: :string]
   Macros.defpacket_clientbound :clientbound_plugin_message, 0x01, 767, [channel: :string, data: :raw]
-  Macros.defpacket_clientbound :disconnect, 0x02, 767, [reason: :json]
+  Macros.defpacket_clientbound :disconnect, 0x02, 767, [reason: :nbt]
   Macros.defpacket_clientbound :finish_configuration, 0x03, 767, []
   Macros.defpacket_clientbound :clientbound_keep_alive, 0x04, 767, [id: :long]
   Macros.defpacket_clientbound :ping, 0x05, 767, [id: :int]
@@ -107,9 +107,43 @@ defmodule Amethyst.ConnectionState.Configuration do
     ]}
   ]
 
+  def handle(%{packet_type: :serverbound_plugin_message, channel: "minecraft:brand", data: data}, 767, state) do
+    {[string], ""} = Amethyst.Minecraft.Read.start(data) |> Amethyst.Minecraft.Read.string() |> Amethyst.Minecraft.Read.stop()
+    Logger.debug("Received brand: #{string}")
+    send(self(), {:send_packet, %{
+      packet_type: :clientbound_plugin_message,
+      channel: "minecraft:brand",
+      data: Amethyst.Minecraft.Write.string("Amethyst")
+    }})
+    state |> Map.put(:brand, string)
+  end
+
+  def handle(%{
+    packet_type: :client_information,
+    locale: locale,
+    view_distance: view_distance,
+    chat_mode: chat_mode,
+    chat_colors: chat_colors,
+    displayed_skin_parts: displayed_skin_parts,
+    main_hand: main_hand,
+    text_filtering: text_filtering,
+    allow_server_listings: allow_server_listings
+  }, 767, state) do
+    Logger.debug("Received client information")
+    state
+    |> Map.put(:locale, locale)
+    |> Map.put(:view_distance, view_distance)
+    |> Map.put(:chat_mode, chat_mode)
+    |> Map.put(:chat_colors, chat_colors)
+    |> Map.put(:displayed_skin_parts, displayed_skin_parts)
+    |> Map.put(:main_hand, main_hand)
+    |> Map.put(:text_filtering, text_filtering)
+    |> Map.put(:allow_server_listings, allow_server_listings)
+  end
+
   def disconnect(reason) do
-    %{packet_type: :disconnect, reason: %{
-      "text" => reason
-    }}
+    %{packet_type: :disconnect, reason: {:compound, %{
+      "text" => {:string, reason}
+    }}}
   end
 end

apps/amethyst/lib/states/login.ex

@@ -23,7 +23,7 @@ defmodule Amethyst.ConnectionState.Login do
   @moduledoc """
   This module contains the packets and logic for the Login state.
   """
-  Macros.defpacket_clientbound :disconnect, 0x00, 767, [reason: :nbt]
+  Macros.defpacket_clientbound :disconnect, 0x00, 767, [reason: :json]
   Macros.defpacket_clientbound :encryption_request, 0x01, 767, [
     server_id: :string,
     public_key: :byte_array,
@@ -84,9 +84,9 @@ defmodule Amethyst.ConnectionState.Login do
 
   def disconnect(reason) do
     %{packet_type: :disconnect, reason:
-      {:compound, %{
-        "text" => {:string, reason}
-      }}
+      %{
+        "text" => reason
+      }
     }
   end
 end