1 files changed, 66 insertions, 0 deletions

diff --git a/src/services/player.ts b/src/services/player.ts
index 5e284a6..b833022 100644
--- a/src/services/player.ts
+++ b/src/services/player.ts
@@ -20,6 +20,7 @@ import FileCacheProvider from './file-cache.js';
 import debug from '../utils/debug.js';
 import {getGuildSettings} from '../utils/get-guild-settings.js';
 import {buildPlayingMessageEmbed} from '../utils/build-embed.js';
+import {Setting} from '@prisma/client';
 
 export enum MediaSource {
   Youtube,
@@ -82,6 +83,8 @@ export default class {
   private readonly fileCache: FileCacheProvider;
   private disconnectTimer: NodeJS.Timeout | null = null;
 
+  private readonly channelToSpeakingUsers: Map<string, Set<string>> = new Map();
+
   constructor(fileCache: FileCacheProvider, guildId: string) {
     this.fileCache = fileCache;
     this.guildId = guildId;
@@ -96,9 +99,12 @@ export default class {
     this.voiceConnection = joinVoiceChannel({
       channelId: channel.id,
       guildId: channel.guild.id,
+      selfDeaf: false,
       adapterCreator: channel.guild.voiceAdapterCreator as DiscordGatewayAdapterCreator,
     });
 
+    const guildSettings = await getGuildSettings(this.guildId);
+
     // Workaround to disable keepAlive
     this.voiceConnection.on('stateChange', (oldState, newState) => {
       /* eslint-disable @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-member-access, @typescript-eslint/no-unsafe-call */
@@ -115,6 +121,9 @@ export default class {
       /* eslint-enable @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-assignment, @typescript-eslint/no-unsafe-member-access, @typescript-eslint/no-unsafe-call */
 
       this.currentChannel = channel;
+      if (newState.status === VoiceConnectionStatus.Ready) {
+        this.registerVoiceActivityListener(guildSettings);
+      }
     });
   }
 
@@ -302,6 +311,63 @@ export default class {
     }
   }
 
+  registerVoiceActivityListener(guildSettings: Setting) {
+    const {turnDownVolumeWhenPeopleSpeak, turnDownVolumeWhenPeopleSpeakTarget} = guildSettings;
+    if (!turnDownVolumeWhenPeopleSpeak || !this.voiceConnection) {
+      return;
+    }
+
+    this.voiceConnection.receiver.speaking.on('start', (userId: string) => {
+      if (!this.currentChannel) {
+        return;
+      }
+
+      const member = this.currentChannel.members.get(userId);
+      const channelId = this.currentChannel?.id;
+
+      if (member) {
+        if (!this.channelToSpeakingUsers.has(channelId)) {
+          this.channelToSpeakingUsers.set(channelId, new Set());
+        }
+
+        this.channelToSpeakingUsers.get(channelId)?.add(member.id);
+      }
+
+      this.suppressVoiceWhenPeopleAreSpeaking(turnDownVolumeWhenPeopleSpeakTarget);
+    });
+
+    this.voiceConnection.receiver.speaking.on('end', (userId: string) => {
+      if (!this.currentChannel) {
+        return;
+      }
+
+      const member = this.currentChannel.members.get(userId);
+      const channelId = this.currentChannel.id;
+      if (member) {
+        if (!this.channelToSpeakingUsers.has(channelId)) {
+          this.channelToSpeakingUsers.set(channelId, new Set());
+        }
+
+        this.channelToSpeakingUsers.get(channelId)?.delete(member.id);
+      }
+
+      this.suppressVoiceWhenPeopleAreSpeaking(turnDownVolumeWhenPeopleSpeakTarget);
+    });
+  }
+
+  suppressVoiceWhenPeopleAreSpeaking(turnDownVolumeWhenPeopleSpeakTarget: number): void {
+    if (!this.currentChannel) {
+      return;
+    }
+
+    const speakingUsers = this.channelToSpeakingUsers.get(this.currentChannel.id);
+    if (speakingUsers && speakingUsers.size > 0) {
+      this.setVolume(turnDownVolumeWhenPeopleSpeakTarget);
+    } else {
+      this.setVolume(this.defaultVolume);
+    }
+  }
+
   canGoForward(skip: number) {
     return (this.queuePosition + skip - 1) < this.queue.length;
   }