import typing
import collections.abc

from .directory_image import directory_image
from .product import product
from .exception import not_ready_exception

class product_response:
    def __init__(self, images: directory_image) -> None:
        self.__images = images

    @property
    def images(self) -> directory_image:    
        return self.__images

    def single(self, target: product) -> dict:
        if not target.ready:
            raise not_ready_exception(target)

        covers = directory_image.server_path() + "/"

        return {
            "name": target.name,
            "description": target.description,
            "author": target.author,
            "image": covers + self.images.get_full_name(target),
            "thumbnail": covers + self.images.get_thumbnail_name(target),
            "stock_count": target.stock_count,
            "on_stock": target.on_stock,
            "barcode": target.barcode
        }

    def collection(self, targets: typing.Iterable[product]) -> list:
        result = list() 

        for count in targets:
            if not isinstance(count, product):
                raise TypeError("Product list must contain only products.")

            result.append(self.single(count))

        return result