feat: allow recording audio in workflow builder

api/routes/workflow_recording.py

@@ -2,9 +2,10 @@
 
 from typing import Annotated, Optional
 
-from fastapi import APIRouter, Depends, HTTPException, Query
+from fastapi import APIRouter, Depends, File, Form, HTTPException, Query, UploadFile
 from loguru import logger
 
+from api.constants import DEPLOYMENT_MODE
 from api.db import db_client
 from api.db.workflow_recording_client import generate_short_id
 from api.enums import StorageBackend
@@ -16,6 +17,7 @@ from api.schemas.workflow_recording import (
     RecordingUploadResponseSchema,
 )
 from api.services.auth.depends import get_user
+from api.services.mps_service_key_client import mps_service_key_client
 from api.services.storage import storage_fs
 
 router = APIRouter(prefix="/workflow-recordings", tags=["workflow-recordings"])
@@ -216,3 +218,42 @@ async def delete_recording(
         raise HTTPException(
             status_code=500, detail="Failed to delete recording"
         ) from exc
+
+
+@router.post(
+    "/transcribe",
+    summary="Transcribe an audio file",
+)
+async def transcribe_audio(
+    file: UploadFile = File(...),
+    language: str = Form("en"),
+    user=Depends(get_user),
+):
+    """Transcribe an uploaded audio file using MPS STT."""
+    try:
+        audio_data = await file.read()
+
+        if DEPLOYMENT_MODE == "oss":
+            result = await mps_service_key_client.transcribe_audio(
+                audio_data=audio_data,
+                filename=file.filename or "audio.wav",
+                content_type=file.content_type or "audio/wav",
+                language=language,
+                created_by=str(user.provider_id),
+            )
+        else:
+            result = await mps_service_key_client.transcribe_audio(
+                audio_data=audio_data,
+                filename=file.filename or "audio.wav",
+                content_type=file.content_type or "audio/wav",
+                language=language,
+                organization_id=user.selected_organization_id,
+            )
+
+        return result
+
+    except Exception as exc:
+        logger.error(f"Error transcribing audio: {exc}")
+        raise HTTPException(
+            status_code=500, detail="Failed to transcribe audio"
+        ) from exc