from fastapi import FastAPI, HTTPException
from pydantic import BaseModel

app = FastAPI()

users_db = {}
next_id = 1

# DTO : Data Transfer Object
class CreateUserDTO(BaseModel):
    name: str
    email: str

@app.post("/users")
async def create_user(json: CreateUserDTO):
    global next_id
    user_id = next_id
    next_id += 1
    users_db[user_id] = {
        "id": user_id,
        "name": json.name,
        "email": json.email
    }
    return users_db[user_id]

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

@app.get("/health")
def health():
    return {"status": "ok", "service": "user-service"}