from typing import Generic, TypeVar

from pydantic import BaseModel, Field

T = TypeVar("T")


class ResponseBase(BaseModel):
    code: int = 0
    message: str = "success"


class PageParams(BaseModel):
    page: int = 1
    page_size: int = Field(default=20, le=100)


class PageResponse(ResponseBase, Generic[T]):
    total: int
    items: list[T]