Remove microphone recording and audio transcription functionality

src/App.jsx

@@ -458,205 +458,6 @@ export default function App() {
     }
   }
 
-  function clearAudioTimers() {
-    if (audioTickTimerRef.current) {
-      window.clearInterval(audioTickTimerRef.current)
-      audioTickTimerRef.current = null
-    }
-    if (audioAutoStopTimerRef.current) {
-      window.clearTimeout(audioAutoStopTimerRef.current)
-      audioAutoStopTimerRef.current = null
-    }
-  }
-
-  function cleanupAudioRecorder(stream = audioStreamRef.current) {
-    clearAudioTimers()
-    stopMediaStream(stream)
-    if (audioStreamRef.current === stream) {
-      audioStreamRef.current = null
-    }
-    audioRecorderRef.current = null
-  }
-
-  async function transcribeRecordedAudio(blob, mimeType) {
-    if (!backendApiUrl) {
-      throw new Error('The Heimgeist backend is not configured.')
-    }
-
-    const controller = new AbortController()
-    audioTranscriptionAbortRef.current = controller
-    setIsTranscribingAudio(true)
-
-    try {
-      const dataUrl = await readFileAsDataUrl(blob)
-      const commaIndex = dataUrl.indexOf(',')
-      if (commaIndex <= 5) {
-        throw new Error('Recorded audio could not be encoded for upload.')
-      }
-      const header = dataUrl.slice(0, commaIndex)
-      const payload = dataUrl.slice(commaIndex + 1)
-      if (!/^data:[^,]+;base64$/i.test(header) || !payload) {
-        throw new Error('Recorded audio could not be encoded for upload.')
-      }
-      const detectedMimeType = header
-        .slice(5)
-        .replace(/;base64$/i, '')
-        .trim()
-
-      const response = await fetch(`${backendApiUrl}/audio/transcribe`, {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        signal: controller.signal,
-        body: JSON.stringify({
-          mime_type: mimeType || detectedMimeType || 'audio/webm',
-          audio_base64: payload,
-          model: transcriptionModel || null,
-          language: audioInputLanguage || null,
-        }),
-      })
-      const data = await expectBackendJson(response)
-      const transcript = String(data?.text || '').trim()
-
-      if (!transcript) {
-        window.alert('No speech was detected. Try again and speak closer to the selected microphone.')
-        return
-      }
-
-      setInput(prev => appendTranscriptToComposer(prev, transcript))
-      requestAnimationFrame(() => textareaRef.current?.focus())
-    } catch (error) {
-      if (isAbortError(error)) {
-        return
-      }
-      throw error
-    } finally {
-      if (audioTranscriptionAbortRef.current === controller) {
-        audioTranscriptionAbortRef.current = null
-      }
-      setIsTranscribingAudio(false)
-    }
-  }
-
-  async function stopAudioRecording(options = {}) {
-    const { shouldTranscribe = true } = options
-    const recorder = audioRecorderRef.current
-    const stopPromise = audioStopPromiseRef.current
-    const mimeType = audioRecorderMimeTypeRef.current || recorder?.mimeType || 'audio/webm'
-
-    if (!recorder || !stopPromise) {
-      return
-    }
-
-    setIsRecordingAudio(false)
-    clearAudioTimers()
-
-    try {
-      if (recorder.state !== 'inactive') {
-        recorder.stop()
-      }
-
-      const blob = await stopPromise
-      if (!shouldTranscribe) {
-        return
-      }
-      if (!blob || blob.size <= 0) {
-        throw new Error('Recorded audio was empty.')
-      }
-      await transcribeRecordedAudio(blob, mimeType)
-    } catch (error) {
-      if (shouldTranscribe) {
-        console.error('Failed to stop microphone recording', error)
-        window.alert(`Microphone transcription failed: ${getErrorText(error)}`)
-      }
-    } finally {
-      audioStopPromiseRef.current = null
-      audioChunksRef.current = []
-      audioRecorderMimeTypeRef.current = ''
-      audioStartedAtRef.current = 0
-      setAudioRecordingMs(0)
-    }
-  }
-
-  async function startAudioRecording() {
-    if (!audioInputEnabled || !audioInputRuntimeReady || isRecordingAudio || isTranscribingAudio || isSending) {
-      return
-    }
-    if (!supportsAudioInputCapture()) {
-      window.alert('Microphone capture is not available in this environment.')
-      return
-    }
-
-    let stream = null
-    try {
-      stream = await navigator.mediaDevices.getUserMedia(getAudioInputConstraints(audioInputDeviceId))
-    } catch (error) {
-      console.error('Failed to access microphone', error)
-      window.alert(`Microphone access failed: ${getErrorText(error)}`)
-      return
-    }
-
-    const preferredMimeType = getPreferredAudioRecorderMimeType()
-    let recorder = null
-    try {
-      recorder = preferredMimeType
-        ? new MediaRecorder(stream, { mimeType: preferredMimeType })
-        : new MediaRecorder(stream)
-    } catch (error) {
-      cleanupAudioRecorder(stream)
-      console.error('Failed to create audio recorder', error)
-      window.alert(`Microphone recording is not available: ${getErrorText(error)}`)
-      return
-    }
-
-    audioStreamRef.current = stream
-    audioRecorderRef.current = recorder
-    audioChunksRef.current = []
-    audioRecorderMimeTypeRef.current = recorder.mimeType || preferredMimeType || 'audio/webm'
-    audioStartedAtRef.current = Date.now()
-    setAudioRecordingMs(0)
-    setIsRecordingAudio(true)
-
-    recorder.ondataavailable = (event) => {
-      if (event.data && event.data.size > 0) {
-        audioChunksRef.current.push(event.data)
-      }
-    }
-
-    audioStopPromiseRef.current = new Promise((resolve, reject) => {
-      recorder.onstop = () => {
-        const blob = new Blob(audioChunksRef.current, {
-          type: recorder.mimeType || audioRecorderMimeTypeRef.current || 'audio/webm',
-        })
-        cleanupAudioRecorder(stream)
-        resolve(blob)
-      }
-      recorder.onerror = (event) => {
-        cleanupAudioRecorder(stream)
-        reject(event?.error || new Error('Audio recording failed.'))
-      }
-    })
-
-    audioTickTimerRef.current = window.setInterval(() => {
-      setAudioRecordingMs(Date.now() - audioStartedAtRef.current)
-    }, AUDIO_RECORDING_TICK_MS)
-    audioAutoStopTimerRef.current = window.setTimeout(() => {
-      stopAudioRecording()
-    }, MAX_AUDIO_RECORDING_MS)
-
-    recorder.start()
-  }
-
-  async function toggleAudioRecording() {
-    if (isTranscribingAudio) {
-      return
-    }
-    if (isRecordingAudio) {
-      await stopAudioRecording()
-      return
-    }
-    await startAudioRecording()
-  }
-
   async function handleComposerImageSelection(event) {
     const files = event.target?.files
     try {