Refactor code structure for improved readability and maintainability

2026-07-22 22:58:28 +05:30
parent d1308bf149
commit bc8bf2007d
99 changed files with 4784 additions and 111 deletions
@@ -0,0 +1,45 @@
+import { type NextRequest, NextResponse } from 'next/server';
+
+import { RunpodError } from '../../../../lib/runpod/client';
+import { rpTranscribe } from '../../../../lib/runpod/endpoints';
+
+export const runtime = 'nodejs';
+export const maxDuration = 60; // cold-start STT worker can take a while
+
+/**
+ * Speech-to-text proxy for voice annotations. Accepts base64 WAV (16 kHz mono
+ * PCM16, produced in-browser by lib/audioCapture) and returns the transcript.
+ * Calls the RunPod voice-to-text endpoint (RUNPOD_STT_URL) — the key stays
+ * server-side. See docs/AI-SETUP.md.
+ */
+
+const MAX_BASE64 = 8_000_000; // ~6 MB decoded WAV — stays under serverless body limits
+
+export async function POST(req: NextRequest) {
+  let body: { audio?: unknown; language?: unknown };
+  try {
+    body = await req.json();
+  } catch {
+    return NextResponse.json({ error: 'Invalid JSON body.' }, { status: 400 });
+  }
+
+  const audio = typeof body.audio === 'string' ? body.audio : '';
+  const language = typeof body.language === 'string' ? body.language : undefined;
+  if (!audio) return NextResponse.json({ error: 'Missing audio.' }, { status: 400 });
+  if (audio.length > MAX_BASE64) {
+    return NextResponse.json({ error: 'Audio too long — keep it under ~30s.' }, { status: 413 });
+  }
+
+  try {
+    const { transcript, segments } = await rpTranscribe(audio, { language, punctuation: true });
+    return NextResponse.json({ transcript, segments });
+  } catch (e) {
+    const msg =
+      e instanceof RunpodError
+        ? e.message
+        : e instanceof Error
+          ? e.message
+          : 'Transcription failed.';
+    return NextResponse.json({ error: msg }, { status: 502 });
+  }
+}