Function chat

api/server.py:146–291

Main chat endpoint that receives files and instructions Args: message: User's text message content: 'paper' or 'general' output_type: 'slides' or 'poster' style: 'academic', 'doraemon', or custom description length: 'short', 'medium', 'long' (for

(
    background_tasks: BackgroundTasks,
    message: str = Form(""),
    content: str = Form("paper"),  # 'paper' or 'general'
    output_type: str = Form("slides"),  # 'slides' or 'poster'
    style: str = Form("doraemon"),  # 'academic', 'doraemon', or custom description
    length: Optional[str] = Form(None),  # 'short', 'medium', 'long' (for slides)
    density: Optional[str] = Form(None),  # 'sparse', 'medium', 'dense' (for poster)
    fast_mode: Optional[str] = Form(None),  # 'true' or 'false' - fast mode for paper content
    session_id: Optional[str] = Form(None),  # Existing session ID to reuse files
    files: List[UploadFile] = File([])
)

@app.post("/api/chat", response_model=ChatResponse)
async def chat(
    background_tasks: BackgroundTasks,
    message: str = Form(""),
    content: str = Form("paper"),  # 'paper' or 'general'
    output_type: str = Form("slides"),  # 'slides' or 'poster'
    style: str = Form("doraemon"),  # 'academic', 'doraemon', or custom description
    length: Optional[str] = Form(None),  # 'short', 'medium', 'long' (for slides)
    density: Optional[str] = Form(None),  # 'sparse', 'medium', 'dense' (for poster)
    fast_mode: Optional[str] = Form(None),  # 'true' or 'false' - fast mode for paper content
    session_id: Optional[str] = Form(None),  # Existing session ID to reuse files
    files: List[UploadFile] = File([])
):
    """
    Main chat endpoint that receives files and instructions
    
    Args:
        message: User's text message
        content: 'paper' or 'general'
        output_type: 'slides' or 'poster'
        style: 'academic', 'doraemon', or custom description
        length: 'short', 'medium', 'long' (for slides)
        density: 'sparse', 'medium', 'dense' (for poster)
        fast_mode: 'true' or 'false' - fast mode for paper content (no RAG indexing)
        session_id: Optional existing session ID to reuse files (for regeneration)
        files: List of uploaded files (PDF, MD, etc.)
    
    Returns:
        Response with session ID - actual generation happens in background
    """
    try:
        # Check if another session is already running
        running_session = session_manager.get_running_session()
        
        # Check if reusing existing session
        reusing_session = False
        if session_id and not files:
            # Reuse existing session
            session_dir = UPLOAD_DIR / session_id
            if session_dir.exists():
                reusing_session = True
                print(f"Reusing existing session: {session_id[:8]}")
                
                # Check if this is a different session from the running one
                if running_session and running_session != session_id:
                    raise HTTPException(
                        status_code=409, 
                        detail=f"Another session is already running. Please wait for it to complete. Running session: {running_session[:8]}"
                    )
            else:
                raise HTTPException(status_code=404, detail=f"Session {session_id} not found")
        else:
            # Generate new session ID
            if running_session:
                raise HTTPException(
                    status_code=409, 
                    detail=f"Another session is already running. Please wait for it to complete. Running session: {running_session[:8]}"
                )