from marshmallow import fields, validate

from server.constants import DEFAULT_PAGINATION_LIMIT


def get_pagination_mixin(
    page_offset: int or None = 0, page_limit: int or None = DEFAULT_PAGINATION_LIMIT, max_limit: int or None = None
) -> type:
    class PaginationParams:
        offset = fields.Integer(validate=validate.Range(min=0), missing=page_offset)
        limit = fields.Integer(validate=validate.Range(min=1, max=max_limit), missing=page_limit)

    return PaginationParams


PaginationMixin = get_pagination_mixin()


class PaginationResultMixin:
    count = fields.Integer(default=0)
    next = fields.String(default=None)
    previous = fields.String(default=None)