useVoiceStream.ts

React hook for handling SSE voice streaming responses. Converts audio blob to base64 and sends as JSON to match server expectations. /

/**
 * React hook for handling SSE voice streaming responses.
 * Converts audio blob to base64 and sends as JSON to match server expectations.
 */
import { useCallback } from "react";
import { useAudioPlayback } from "./useAudioPlayback";

interface StreamCallbacks {
  onUserTranscript?: (text: string) => void;
  onTranscript?: (text: string, full: string) => void;
  onComplete?: (transcript: string) => void;
  onError?: (error: Error) => void;
}

export function useVoiceStream(callbacks: StreamCallbacks = {}) {
  const playback = useAudioPlayback();

  const streamVoiceResponse = useCallback(
    async (url: string, audioBlob: Blob) => {
      await playback.init();
      playback.clear();

      // Convert blob to base64 for JSON body (server expects express.json())
      const base64Aud

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