from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from typing import Optional

app = FastAPI(title="User Service")

class UserCreate(BaseModel):
    name: str
    email: str

class UserResponse(BaseModel):
    id: int
    name: str
    email: str

@app.post("/users/", response_model=UserResponse, status_code=201)
async def create_user(user: UserCreate):
    try:
        user_id = save_user(user.name, user.email)
        return {"id": user_id, "name": user.name, "email": user.email}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@app.get("/users/{user_id}", response_model=UserResponse)
async def read_user(user_id: int):
    user_data = get_user(user_id)
    if not user_data:
        raise HTTPException(status_code=404, detail="User not found")
    return user_data