from typing import Generic, TypeVar

from pydantic import BaseModel

T = TypeVar("T")


class APIResponse(BaseModel, Generic[T]):
    success: bool = True
    data: T | None = None
    message: str = ""


class PageParams(BaseModel):
    page: int = 1
    page_size: int = 20


class PageResponse(BaseModel, Generic[T]):
    items: list[T]
    total: int
    page: int
    page_size: int
    total_pages: int