import typing as t

from .model import Catalog as Model


class Catalog:
    @staticmethod
    def __get_item(item_id: int) -> dict:
        item = {}
        if item_id is not None:
            i = Model.get_or_none(Model.id == item_id)
            if i is not None:
                item.update(
                    {
                        "id": i.id,
                        "name": i.name,
                        "description": i.description,
                        "price": i.price,
                        "image": i.image
                    }
                )
        return item
    
    @classmethod
    def get_catalog(cls, item_id:int = None, get_count:bool = False) -> t.Union[list, dict]:
        if item_id:
            if get_count:
                return cls.__get_item(item_id), Model.select().count()
            return cls.__get_item(item_id)

        items = []
        for i in Model.select():
            items.append(cls.__get_item(i.id))
        return items
    
    @staticmethod
    def delete_post(item_id: int):
        return Model.delete_by_id(item_id)


def add_item(name: str, description: str, price:t.Union[int, float], image:bytes, **kw):
    Model.insert(
        name=name,
        description=description,
        price=price,
        image=image
    ).execute()