Initial commit: VoIdeaAI - voice-first AI idea assistant

app/services/whisper_service.py

@@ -0,0 +1,54 @@
+"""Whisper transcription service for VoIdeaAI.
+
+Used as fallback when browser Web Speech API fails.
+Supports OpenAI Whisper API and compatible endpoints.
+"""
+
+import tempfile
+from pathlib import Path
+
+import httpx
+
+from app.core.config import get_settings
+
+WHISPER_URL = "https://api.openai.com/v1/audio/transcriptions"
+
+
+async def transcribe(audio_data: bytes, filename: str = "audio.webm") -> str | None:
+    """Transcribe audio using Whisper API.
+
+    Args:
+        audio_data: Raw audio bytes
+        filename: Original filename (determines format)
+
+    Returns:
+        Transcribed text or None if failed
+    """
+    settings = get_settings()
+
+    api_key = settings.openai_api_key or settings.ai_yandex_key or ""
+    if not api_key:
+        return None
+
+    url = WHISPER_URL
+
+    with tempfile.NamedTemporaryFile(delete=False, suffix=Path(filename).suffix) as tmp:
+        tmp.write(audio_data)
+        tmp_path = tmp.name
+
+    try:
+        async with httpx.AsyncClient(timeout=30.0) as client:
+            with open(tmp_path, "rb") as f:
+                resp = await client.post(
+                    url,
+                    headers={"Authorization": f"Bearer {api_key}"},
+                    files={"file": (filename, f, "audio/webm")},
+                    data={"model": "whisper-1", "language": "ru"},
+                )
+            if resp.status_code == 200:
+                return resp.json().get("text")
+            return None
+    except Exception:
+        return None
+    finally:
+        Path(tmp_path).unlink(missing_ok=True)