import datetime
from abc import ABC, abstractmethod
from dataclasses import dataclass
from typing import List


@dataclass
class Item:
    product_number: str
    quantity: str
    description: str


class InvoiceCreator(ABC):
    @abstractmethod
    def create_invoice(
        self,
        customer_number: str,
        purchase_order_date: datetime.date,
        delivery_date: datetime.date,
        reference_purchase_order: str,
        unic_id: str,
        items: List[Item],
    ):
        pass