65 lines
2.2 KiB
Python
65 lines
2.2 KiB
Python
import asyncio
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import json
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from fastapi import APIRouter, Depends, HTTPException
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from fastapi.responses import StreamingResponse
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from sqlalchemy.ext.asyncio import AsyncSession
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from models.presentation_outline_model import PresentationOutlineModel
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from models.sql.presentation import PresentationModel
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from models.sse_response import SSECompleteResponse, SSEResponse, SSEStatusResponse
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from services.database import get_async_session
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from utils.llm_calls.generate_presentation_outlines import generate_ppt_outline
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OUTLINES_ROUTER = APIRouter(prefix="/outlines", tags=["Outlines"])
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@OUTLINES_ROUTER.get("/stream")
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async def stream_outlines(
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presentation_id: str, sql_session: AsyncSession = Depends(get_async_session)
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):
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presentation = await sql_session.get(PresentationModel, presentation_id)
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if not presentation:
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raise HTTPException(status_code=404, detail="Presentation not found")
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async def inner():
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yield SSEStatusResponse(
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status="Generating presentation outlines..."
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).to_string()
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presentation_content_text = ""
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async for chunk in generate_ppt_outline(
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presentation.prompt,
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presentation.n_slides,
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presentation.language,
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presentation.summary,
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):
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# Give control to the event loop
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await asyncio.sleep(0)
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yield SSEResponse(
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event="response",
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data=json.dumps({"type": "chunk", "chunk": chunk}),
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).to_string()
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presentation_content_text += chunk
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presentation_content_json = json.loads(presentation_content_text)
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presentation_content = PresentationOutlineModel(**presentation_content_json)
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presentation_content.slides = presentation_content.slides[
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: presentation.n_slides
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]
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presentation.title = presentation_content.title
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presentation.outlines = [
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each.model_dump() for each in presentation_content.slides
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]
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sql_session.add(presentation)
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await sql_session.commit()
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yield SSECompleteResponse(
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key="presentation", value=presentation.model_dump(mode="json")
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).to_string()
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return StreamingResponse(inner(), media_type="text/event-stream")
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