from pydantic import BaseModel
from typing import Optional

class CountrySchema(BaseModel):
    country_id: int
    country_name: str
    country_code: str
    currency: str
    currency_symbol: str
    phone_code: str
    timezone: str
    iso2: str
    iso3: str
    continent: str
    is_active: bool

    class Config:
        from_attributes = True

class StateSchema(BaseModel):
    state_id: int
    country_id: int
    state_name: str
    state_code: str
    is_active: bool

    class Config:
        from_attributes = True

class CitySchema(BaseModel):
    city_id: int
    state_id: int
    city_name: str
    postal_code: str
    is_active: bool

    class Config:
        from_attributes = True