From 3088fbfaa419df909908e00d2c9af9dec62d6206 Mon Sep 17 00:00:00 2001
From: Aleksa Vuckovic <aleksa@vuckovic.cc>
Date: Wed, 10 Jun 2026 22:06:29 +0200
Subject: Reject /play early when voice channel is full

Discord silently drops the bot's op 4 join when the channel user limit is
reached and the bot lacks Move Members, causing a 30s AbortError timeout.
Check voiceChannel.full upfront and return a clear error to the user.

Also revert the voice-join diagnostic logging added while investigating.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 src/handlers/playCommand.js | 35 ++---------------------------------
 1 file changed, 2 insertions(+), 33 deletions(-)

(limited to 'src/handlers')

diff --git a/src/handlers/playCommand.js b/src/handlers/playCommand.js
index 365f4f6..c61e009 100644
--- a/src/handlers/playCommand.js
+++ b/src/handlers/playCommand.js
@@ -129,50 +129,19 @@ async function createVoiceConnection(voiceChannel, interaction) {
   const maxAttempts = 2;
 
   for (let attempt = 1; attempt <= maxAttempts; attempt++) {
-    const guild = voiceChannel.guild;
-    const botMember = guild.members.me;
-    const botVoiceState = botMember?.voice;
-    console.log(`[JOIN ATTEMPT ${attempt}] Guild: ${guildId}, Channel: ${voiceChannel.id}, Shard status: ${guild.shard?.status}, Shard id: ${guild.shardId}`);
-    console.log(`[BOT INFO] id: ${guild.client.user?.id}, voice channelId: ${botVoiceState?.channelId ?? 'null'}, sessionId: ${botVoiceState?.sessionId ?? 'null'}, serverDeaf: ${botVoiceState?.serverDeaf}, serverMute: ${botVoiceState?.serverMute}, selfDeaf: ${botVoiceState?.selfDeaf}, selfMute: ${botVoiceState?.selfMute}`);
-    console.log(`[CHANNEL INFO] name: ${voiceChannel.name}, type: ${voiceChannel.type}, userLimit: ${voiceChannel.userLimit}, full: ${voiceChannel.full}, joinable: ${voiceChannel.joinable}, members: ${voiceChannel.members?.size}, rtcRegion: ${voiceChannel.rtcRegion}`);
-
-    const baseAdapterCreator = guild.voiceAdapterCreator;
-    const adapterCreator = (methods) => {
-      const adapter = baseAdapterCreator(methods);
-      const originalSendPayload = adapter.sendPayload;
-      adapter.sendPayload = (data) => {
-        const result = originalSendPayload(data);
-        console.log(`[ADAPTER sendPayload] op=${data?.op}, sent=${result}, shard=${guild.shard?.status}, payload=${JSON.stringify(data?.d)}`);
-        return result;
-      };
-      const originalDestroy = adapter.destroy;
-      adapter.destroy = () => {
-        console.log(`[ADAPTER destroy]`);
-        return originalDestroy();
-      };
-      return adapter;
-    };
-
     const connection = joinVoiceChannel({
       channelId: voiceChannel.id,
       guildId,
-      adapterCreator,
+      adapterCreator: voiceChannel.guild.voiceAdapterCreator,
       selfDeaf: true,
     });
 
-    const stateLogger = (oldState, newState) => {
-      console.log(`[VOICE STATE] Guild: ${guildId}, ${oldState.status} -> ${newState.status}${newState.reason ? ` (reason: ${newState.reason})` : ''}${newState.closeCode ? ` (closeCode: ${newState.closeCode})` : ''}`);
-    };
-    connection.on('stateChange', stateLogger);
-
     try {
       await entersState(connection, VoiceConnectionStatus.Ready, 30000);
-      connection.off('stateChange', stateLogger);
       return connection;
     } catch (error) {
       lastError = error;
-      console.error(`Failed to join voice channel (attempt ${attempt}/${maxAttempts}), last state: ${connection.state?.status}:`, error);
-      connection.off('stateChange', stateLogger);
+      console.error(`Failed to join voice channel (attempt ${attempt}/${maxAttempts}):`, error);
       try {
         connection.destroy();
       } catch (e) {
-- 
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