from pydantic import BaseModel
from typing import Optional
from datetime import datetime
from decimal import Decimal


class TripBase(BaseModel):
    title: str
    description: Optional[str] = None
    start_date: datetime
    end_date: datetime
    budget: Optional[Decimal] = None
    status: str = "planned"


class TripCreate(TripBase):
    pass


class TripUpdate(BaseModel):
    title: Optional[str] = None
    description: Optional[str] = None
    start_date: Optional[datetime] = None
    end_date: Optional[datetime] = None
    budget: Optional[Decimal] = None
    status: Optional[str] = None


class TripResponse(TripBase):
    id: int
    user_id: int
    created_at: datetime
    updated_at: Optional[datetime] = None

    class Config:
        from_attributes = True


class ItineraryBase(BaseModel):
    destination_id: int
    day_number: int
    activity: str
    description: Optional[str] = None
    start_time: Optional[datetime] = None
    end_time: Optional[datetime] = None


class ItineraryCreate(ItineraryBase):
    pass


class ItineraryResponse(ItineraryBase):
    id: int
    trip_id: int
    created_at: datetime

    class Config:
        from_attributes = True