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""" |
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byceps.services.shop.order.ordered_articles_service |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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:Copyright: 2006-2021 Jochen Kupperschmidt |
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:License: Revised BSD (see `LICENSE` file for details) |
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""" |
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from __future__ import annotations |
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from collections import Counter |
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from typing import Sequence |
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from ....database import db |
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from ..article.transfer.models import ArticleNumber |
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from .dbmodels.line_item import LineItem as DbLineItem |
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from .service import line_item_to_transfer_object |
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from .transfer.models import LineItem, PaymentState |
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def count_ordered_articles( |
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article_number: ArticleNumber, |
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) -> dict[PaymentState, int]: |
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"""Count how often the article has been ordered, grouped by the |
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order's payment state. |
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""" |
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line_items = DbLineItem.query \ |
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.filter_by(article_number=article_number) \ |
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.options( |
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db.joinedload(DbLineItem.order), |
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db.joinedload(DbLineItem.article), |
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) \ |
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.all() |
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# Ensure every payment state is present in the resulting dictionary, |
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# even if no orders of the corresponding payment state exist for the |
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# article. |
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counter = Counter({state: 0 for state in PaymentState}) |
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for line_item in line_items: |
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counter[line_item.order.payment_state] += line_item.quantity |
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return dict(counter) |
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def get_line_items_for_article( |
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article_number: ArticleNumber, |
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) -> Sequence[LineItem]: |
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"""Return all line items for that article.""" |
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line_items = DbLineItem.query \ |
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.filter_by(article_number=article_number) \ |
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.all() |
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return list(map(line_item_to_transfer_object, line_items)) |
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byceps /
byceps
