@lobehub/chat/src/app/(backend)/webapi/stt/openai/route.ts

Lobe Chat - an open-source, high-performance chatbot framework that supports speech synthesis, multimodal, and extensible Function Call plugin system. Supports one-click free deployment of your private ChatGPT/LLM web application.

import { OpenAISTTPayload } from '@lobehub/tts';
import { createOpenaiAudioTranscriptions } from '@lobehub/tts/server';

import { createBizOpenAI } from '@/app/(backend)/_deprecated/createBizOpenAI';

export const runtime = 'edge';

export const preferredRegion = [
  'arn1',
  'bom1',
  'cdg1',
  'cle1',
  'cpt1',
  'dub1',
  'fra1',
  'gru1',
  'hnd1',
  'iad1',
  'icn1',
  'kix1',
  'lhr1',
  'pdx1',
  'sfo1',
  'sin1',
  'syd1',
];

export const POST = async (req: Request) => {
  const formData = await req.formData();
  const speechBlob = formData.get('speech') as Blob;
  const optionsString = formData.get('options') as string;
  const payload = {
    options: JSON.parse(optionsString),
    speech: speechBlob,
  } as OpenAISTTPayload;

  const openaiOrErrResponse = createBizOpenAI(req);

  // if resOrOpenAI is a Response, it means there is an error,just return it
  if (openaiOrErrResponse instanceof Response) return openaiOrErrResponse;

  const res = await createOpenaiAudioTranscriptions({ openai: openaiOrErrResponse, payload });

  return new Response(JSON.stringify(res), {
    headers: {
      'content-type': 'application/json;charset=UTF-8',
    },
  });
};