from pydantic import BaseModel
from typing import Optional, TypeVar, Generic, List
from datetime import datetime
from uuid import UUID

T = TypeVar('T')

class BaseResponse(BaseModel):
    """Base response model that all other response models inherit from"""
    uu_id: str
    created_at: datetime
    updated_at: Optional[datetime]
    created_by: Optional[str]
    updated_by: Optional[str]
    confirmed_by: Optional[str]
    is_confirmed: Optional[bool] = None
    active: Optional[bool] = True
    deleted: Optional[bool] = False
    expiry_starts: Optional[datetime]
    expiry_ends: Optional[datetime]
    is_notification_send: Optional[bool] = False
    is_email_send: Optional[bool] = False

    class Config:
        from_attributes = True


class CrudCollection(BaseModel, Generic[T]):
    """Base collection model for paginated responses"""
    page: int = 1
    size: int = 10
    total: int = 0
    order_field: str = "id"
    order_type: str = "asc"
    items: List[T] = []

    class Config:
        from_attributes = True