Mp3 uploading is now done on next, now doing concurrent reading and listening exercise calls with ayncio's gather to openai, should be faster

app/controllers/impl/listening.py

@@ -1,7 +1,10 @@
+import io
+
+from starlette.responses import StreamingResponse
+
 from app.controllers.abc import IListeningController
-from app.dtos.listening import SaveListeningDTO, GenerateListeningExercises, Dialog
+from app.dtos.listening import GenerateListeningExercises, Dialog
 from app.services.abc import IListeningService
-from fastapi import Response
 
 
 class ListeningController(IListeningController):
@@ -17,13 +20,12 @@ class ListeningController(IListeningController):
 
     async def generate_mp3(self, dto: Dialog):
         mp3 = await self._service.generate_mp3(dto)
-        return Response(
-            content=mp3,
+
+        return StreamingResponse(
+            content=io.BytesIO(mp3),
             media_type="audio/mpeg",
             headers={
+                "Content-Type": "audio/mpeg",
                 "Content-Disposition": "attachment;filename=speech.mp3"
             }
         )
-
-    async def save_listening(self, data: SaveListeningDTO):
-        return await self._service.save_listening(data.parts, data.minTimer, data.difficulty, data.id)