feat: Transcription endpoints

Author: Aleksander Grygier

apps/web/src/lib/methods/transcribe-recording.ts

@@ -7,7 +7,7 @@ export default async function transcribeRecording(
 
 		formData.append('audio', newBlob, 'audio.webm');
 
-		const response = await fetch('/api/transcribe', {
+		const response = await fetch('/api/transcribe/openai', {
 			method: 'POST',
 			body: formData
 		});

apps/web/src/routes/api/transcribe/+server.ts renamed to apps/web/src/routes/api/transcribe/cf/+server.ts

@@ -0,0 +1,48 @@
+import { error, json, text } from '@sveltejs/kit';
+import OpenAI from 'openai';
+import type { RequestHandler } from './$types';
+import { env as envPrivate } from '$env/dynamic/private';
+
+const openai = envPrivate.OPENAI_API_KEY
+	? new OpenAI({
+			apiKey: envPrivate.OPENAI_API_KEY
+		})
+	: undefined;
+
+export const POST: RequestHandler = async ({ request }) => {
+	if (!openai) {
+		return error(500, 'OpenAI API key not provided');
+	}
+
+	try {
+		const data = await request.formData();
+		const audioFile = data.get('audio') as File;
+
+		if (!audioFile) {
+			return json({ error: 'No audio file provided' }, { status: 400 });
+		}
+
+		console.log('Audio file details:', audioFile.type, audioFile.size, audioFile.name);
+
+		const controller = new AbortController();
+		const timeoutId = setTimeout(() => controller.abort(), 60000);
+
+		const transcription = await openai.audio.transcriptions.create({
+			file: audioFile,
+			model: 'whisper-1'
+			// response_format: 'text'
+		});
+
+		clearTimeout(timeoutId);
+
+		return json(transcription);
+	} catch (err: any) {
+		if (err.name === 'AbortError') {
+			console.error('Request timed out:', err);
+			return error(408, 'Request timed out');
+		}
+
+		console.error('Error during transcription:', err);
+		return error(500, err.message);
+	}
+};