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Fix: Reuse voice connection when switching radio stations

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Instead of destroying and recreating the voice connection on every
station change, now checks if the bot is already in the target channel.
If same channel: only stops ffmpeg/player, spawns new stream, reuses
the existing connection (no reconnect flicker).
If different channel: full disconnect + reconnect as before.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Daniel 2026-03-06 11:25:42 +01:00
parent 63afc55836
commit b821ad9615
1 changed files with 45 additions and 19 deletions
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42
server/src/plugins/radio/index.ts
View file

@ -70,13 +70,20 @@ function setFavorites(favs: Favorite[]): void {
}
// ── Streaming ──
function stopStream(guildId: string): void {
/** Stop only audio (ffmpeg + player), keep voice connection alive */
function stopAudio(guildId: string): void {
const state = guildRadioState.get(guildId);
if (!state) return;
try { state.ffmpeg.kill('SIGKILL'); } catch {}
try { state.player.stop(true); } catch {}
try { getVoiceConnection(guildId, 'radio')?.destroy(); } catch {}
guildRadioState.delete(guildId);
}
/** Full stop: audio + voice connection + broadcast */
function stopStream(guildId: string): void {
stopAudio(guildId);
try { getVoiceConnection(guildId, 'radio')?.destroy(); } catch {}
connectedSince.delete(guildId);
broadcastState(guildId);
console.log(`[Radio] Stopped stream in guild ${guildId}`);
@ -86,12 +93,23 @@ async function startStream(
ctx: PluginContext, guildId: string, voiceChannelId: string,
stationId: string, stationName: string, placeName: string, country: string,
): Promise<{ ok: boolean; error?: string }> {
// Stoppe laufenden Stream in diesem Guild
stopStream(guildId);
// Check if we can reuse the existing voice connection
const prev = guildRadioState.get(guildId);
const existingConn = getVoiceConnection(guildId, 'radio');
const sameChannel = prev && existingConn && prev.channelId === voiceChannelId
&& existingConn.state.status === VoiceConnectionStatus.Ready;
// Stop only audio (keep connection if same channel)
stopAudio(guildId);
// Stream-URL auflösen
const streamUrl = await resolveStreamUrl(stationId);
if (!streamUrl) return { ok: false, error: 'Stream-URL konnte nicht aufgelöst werden' };
if (!streamUrl) {
// No stream → full disconnect if nothing playing
if (!sameChannel) try { existingConn?.destroy(); } catch {}
broadcastState(guildId);
return { ok: false, error: 'Stream-URL konnte nicht aufgelöst werden' };
}
// Guild + Channel finden
const guild = ctx.client.guilds.cache.get(guildId);
@ -99,8 +117,14 @@ async function startStream(
const channel = guild.channels.cache.get(voiceChannelId) as VoiceBasedChannel | undefined;
if (!channel) return { ok: false, error: 'Voice Channel nicht gefunden' };
// Voice-Channel joinen
const connection = joinVoiceChannel({
// Reuse or create voice connection
let connection = sameChannel ? existingConn! : null;
if (!connection) {
// Different channel or no connection → full join
try { existingConn?.destroy(); } catch {}
connectedSince.delete(guildId);
connection = joinVoiceChannel({
channelId: voiceChannelId,
guildId,
adapterCreator: guild.voiceAdapterCreator,
@ -114,6 +138,7 @@ async function startStream(
connection.destroy();
return { ok: false, error: 'Voice-Verbindung fehlgeschlagen' };
}
}
// ffmpeg spawnen – Radio-Stream → raw PCM
const ffmpeg = spawn('ffmpeg', [
@ -138,6 +163,7 @@ async function startStream(
console.log(`[Radio] ffmpeg exited (code ${code}), cleaning up`);
guildRadioState.delete(guildId);
try { getVoiceConnection(guildId, 'radio')?.destroy(); } catch {}
connectedSince.delete(guildId);
broadcastState(guildId);
}
});
@ -169,7 +195,7 @@ async function startStream(
});
broadcastState(guildId);
console.log(`[Radio] ▶ "${stationName}" (${placeName}, ${country}) → ${guild.name}/#${channelName}`);
console.log(`[Radio] ${sameChannel ? '\u{1F504}' : '\u25B6'} "${stationName}" (${placeName}, ${country}) → ${guild.name}/#${channelName}`);
return { ok: true };
}