openai-nodejs From Demo to CF Workers endpoint

Demo

import fs from "fs";
import OpenAI from "openai";

const openai = new OpenAI();

async function main() {
  const transcription = await openai.audio.transcriptions.create({
    file: fs.createReadStream("/path/to/file/audio.mp3"),
    model: "whisper-1",
  });

  console.log(transcription.text);
}
main();

endpoint function

async function handleTranscription(request, openai) {
  if (request.method !== "POST") {
    return new Response("Please send a POST request with audio data", { status: 400 });
  }

  try {
    const formData = await request.formData();
    const audioFile = formData.get("audio");

    if (!audioFile) {
      return new Response("No audio file found in the request", { status: 400 });
    }

    console.log('Received audio file:', audioFile.name, audioFile.type, audioFile.size);

    // Convert the File to a Blob
    const arrayBuffer = await audioFile.arrayBuffer();
    const blob = new Blob([arrayBuffer], { type: audioFile.type });

    // Create a new File object from the Blob
    const file = new File([blob], audioFile.name, { type: audioFile.type });

    console.log('Created File object:', file.name, file.type, file.size);
    console.log('Sending to OpenAI API...');

    const transcription = await openai.audio.transcriptions.create({
      file: file,
      model: "whisper-1",
    });
    console.log('Received transcription:', transcription.text);

    return new Response(JSON.stringify({ text: transcription.text }), {
      headers: { "Content-Type": "application/json" },
    });
  } catch (error) {
    console.error("Error:", error);
    if (error.response) {
      console.error("OpenAI API response:", await error.response.text());
    }
    return new Response(`Error: ${error.message}`, { status: 500 });
  }
}