"""
Medical Query Router for RAG AI Advisor
"""
import asyncio
from fastapi import APIRouter, HTTPException
from fastapi.responses import StreamingResponse
import sys
import os

# Add src to path for imports
sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(__file__))))

from core.agent import safe_run_agent, safe_run_agent_streaming

router = APIRouter(tags=["medical"])


@router.get("/ask")
async def ask(query: str, session_id: str = "default"):
    """
    Process a medical query - agent decides which tools to use
    
    Args:
        query: The medical question or query
        session_id: Optional session identifier for conversation continuity (default: "default")
    """
    try:
        response = await safe_run_agent(user_input=query, session_id=session_id)
        return {"response": response, "session_id": session_id}
        
    except Exception as e:
        raise HTTPException(
            status_code=500,
            detail=f"Error processing medical query: {str(e)}"
        )


@router.get("/ask/stream")
async def ask_stream(query: str, session_id: str = "default"):
    """
    Process a medical query with streaming response - agent decides which tools to use
    
    Args:
        query: The medical question or query
        session_id: Optional session identifier for conversation continuity (default: "default")
    """
    async def event_stream():
        try:
            chunk_buffer = ""
            async for chunk in safe_run_agent_streaming(user_input=query, session_id=session_id):
                chunk_buffer += chunk
                
                # Send chunks in reasonable sizes for smoother streaming
                if len(chunk_buffer) >= 10:  # Adjust this value as needed
                    yield chunk_buffer
                    chunk_buffer = ""
                    await asyncio.sleep(0.01)  # Small delay for smoother streaming
            
            # Send any remaining content
            if chunk_buffer:
                yield chunk_buffer
                
        except Exception as e:
            yield f"Error: {str(e)}"
    
    return StreamingResponse(event_stream(), media_type="text/markdown")