from typing import Optional

from fastapi import Query

from schemas.base import PaginationSchema


async def pagination_parameters(
    page: Optional[int] = Query(default=None),
    items_per_page: Optional[int] = Query(default=None, alias="itemsPerPage"),
) -> PaginationSchema:
    return PaginationSchema(page=page, items_per_page=items_per_page)


def is_valid_pagination(pagination: Optional[PaginationSchema]) -> bool:
    if not pagination:
        return False
    return isinstance(pagination.items_per_page, int) and isinstance(
        pagination.page, int
    )