Files
mono/shared/services/cart_items_impl.py
giles 1f36987f77 Replace inter-service _handlers dicts with declarative sx defquery/defaction
The inter-service data layer (fetch_data/call_action) was the least
structured part of the codebase — Python _handlers dicts with ad-hoc
param extraction scattered across 16 route files. This replaces them
with declarative .sx query/action definitions that make the entire
inter-service protocol self-describing and greppable.

Infrastructure:
- defquery/defaction special forms in the sx evaluator
- Query/action registry with load, lookup, and schema introspection
- Query executor using async_eval with I/O primitives
- Blueprint factories (create_data_blueprint/create_action_blueprint)
  with sx-first dispatch and Python fallback
- /internal/schema endpoint on every service
- parse-datetime and split-ids primitives for type coercion

Service extractions:
- LikesService (toggle, is_liked, liked_slugs, liked_ids)
- PageConfigService (ensure, get_by_container, get_by_id, get_batch, update)
- RelationsService (wraps module-level functions)
- AccountDataService (user_by_email, newsletters)
- CartItemsService, MarketDataService (raw SQLAlchemy lookups)

50 of 54 handlers converted to sx, 4 Python fallbacks remain
(ghost-sync/push-member, clear-cart-for-order, create-order).
Net: -1,383 lines Python, +251 lines modified.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-04 08:13:50 +00:00

38 lines
1.1 KiB
Python

"""Extra cart query methods not in the CartService protocol.
cart-items returns raw CartItem data without going through CartSummaryDTO.
"""
from __future__ import annotations
from typing import Any
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession
from shared.models.market import CartItem
class SqlCartItemsService:
async def cart_items(
self, session: AsyncSession, *,
user_id: int | None = None, session_id: str | None = None,
) -> list[dict[str, Any]]:
filters = [CartItem.deleted_at.is_(None)]
if user_id is not None:
filters.append(CartItem.user_id == user_id)
elif session_id is not None:
filters.append(CartItem.session_id == session_id)
else:
return []
result = await session.execute(select(CartItem).where(*filters))
return [
{
"product_id": item.product_id,
"product_slug": item.product_slug,
"quantity": item.quantity,
}
for item in result.scalars().all()
]