feat: enhance configuration management and add error handling

src/recorder/audioStream.ts

@@ -15,7 +15,7 @@ export function subscribeToAudioStream(
   const audioStream = receiver.subscribe(userId, {
     end: {
       behavior: EndBehaviorType.AfterSilence,
-      duration: config.audioStreamSilenceDurationMs,
+      duration: config.AUDIO_STREAM_SILENCE_DURATION_MS,
     },
   });
 

src/recorder/decoder.ts

@@ -25,9 +25,14 @@ export class OpusDecoder {
       options.createDecoder ??
       (() =>
         new prism.opus.Decoder({
-          frameSize: config.opusFrameSize,
-          channels: config.audioChannels as 1 | 2,
-          rate: config.audioSampleRate as 8000 | 12000 | 16000 | 24000 | 48000,
+          frameSize: config.OPUS_FRAME_SIZE,
+          channels: config.AUDIO_CHANNELS as 1 | 2,
+          rate: config.AUDIO_SAMPLE_RATE as
+            | 8000
+            | 12000
+            | 16000
+            | 24000
+            | 48000,
         }));
   }
 

src/recorder/metadata.ts

@@ -33,7 +33,7 @@ export async function collectUserMetadata(
     avatarUrl:
       user?.displayAvatarURL({
         format: "png",
-        size: config.avatarSize as
+        size: config.AVATAR_SIZE as
           | 16
           | 32
           | 64