from datetime import datetime
from typing import Optional
from pydantic import BaseModel


class VehicleBase(BaseModel):
    name: str
    type: str = "car"


class VehicleCreate(VehicleBase):
    pass


class VehicleUpdate(BaseModel):
    name: Optional[str] = None
    type: Optional[str] = None


class VehicleResponse(VehicleBase):
    id: int
    created_at: datetime

    class Config:
        from_attributes = True


class LastPosition(BaseModel):
    lat: float
    lon: float
    speed: float
    heading: float
    timestamp: datetime


class VehicleWithPosition(VehicleResponse):
    last_position: Optional[LastPosition] = None
    status: str = "unknown"  # moving, stopped, offline