90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
from datetime import datetime, timezone
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import uuid
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from fastapi import APIRouter, Request, Depends, Form
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from fastapi.responses import HTMLResponse, StreamingResponse
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from fastapi.templating import Jinja2Templates
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from sqlalchemy import select, desc
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from app.models.base import async_session
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from app.models.user import User
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from app.models.chat import ChatMessage
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from app.auth import get_current_user
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from app.services.opencode_proxy import query_opencode
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router = APIRouter()
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templates = Jinja2Templates(directory="app/templates")
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@router.get("/chat", response_class=HTMLResponse)
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async def chat_page(request: Request, user: User = Depends(get_current_user)):
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session_id = request.cookies.get("chat_session_id")
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if not session_id:
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session_id = str(uuid.uuid4())
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async with async_session() as session:
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result = await session.execute(
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select(ChatMessage)
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.where(
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ChatMessage.user_id == user.id,
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ChatMessage.session_id == session_id,
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)
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.order_by(ChatMessage.created_at)
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)
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messages = result.scalars().all()
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resp = templates.TemplateResponse("chat.html", {
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"request": request,
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"user": user,
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"messages": messages,
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"session_id": session_id,
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})
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resp.set_cookie(key="chat_session_id", value=session_id, httponly=True, max_age=86400 * 30)
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return resp
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@router.post("/chat")
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async def chat_send(
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request: Request,
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user: User = Depends(get_current_user),
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message: str = Form(),
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):
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session_id = request.cookies.get("chat_session_id") or str(uuid.uuid4())
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user_context = (
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f"Username: {user.username}. "
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f"Weight: {user.weight_lb} lb. "
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f"Goals: {user.goals or 'Not specified'}. "
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f"Medical: {user.medical_notes or 'None'}"
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)
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async def stream():
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async with async_session() as session:
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user_msg = ChatMessage(
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user_id=user.id,
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session_id=session_id,
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role="user",
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content=message,
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created_at=datetime.now(timezone.utc).isoformat(),
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)
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session.add(user_msg)
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await session.commit()
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assistant_content = ""
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async for chunk in query_opencode(message, session_id, user_context):
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assistant_content += chunk
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yield f"data: {chunk}\n\n"
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async with async_session() as session:
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assistant_msg = ChatMessage(
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user_id=user.id,
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session_id=session_id,
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role="assistant",
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content=assistant_content,
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created_at=datetime.now(timezone.utc).isoformat(),
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)
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session.add(assistant_msg)
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await session.commit()
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resp = StreamingResponse(stream(), media_type="text/event-stream")
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resp.set_cookie(key="chat_session_id", value=session_id, httponly=True, max_age=86400 * 30)
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return resp
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