feat: initialize cart app with blueprints, templates, and CI

Extract cart, order, and orders blueprints with their service layer,
templates, Dockerfile (APP_MODULE=app:app, IMAGE=cart), entrypoint,
and Gitea CI workflow from the coop monolith.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

bp/cart/api.py

@@ -0,0 +1,148 @@
+"""
+Internal JSON API for the cart app.
+
+These endpoints are called by other apps (coop, market) over HTTP.
+They are CSRF-exempt because they are server-to-server calls.
+"""
+from __future__ import annotations
+
+from quart import Blueprint, g, request, jsonify
+from sqlalchemy import select, update, func
+from sqlalchemy.orm import selectinload
+
+from models.market import CartItem
+from models.calendars import CalendarEntry
+from suma_browser.app.csrf import csrf_exempt
+from shared.cart_identity import current_cart_identity
+
+
+def register() -> Blueprint:
+    bp = Blueprint("cart_api", __name__, url_prefix="/internal/cart")
+
+    @bp.get("/summary")
+    @csrf_exempt
+    async def summary():
+        """
+        Return a lightweight cart summary (count + total) for the
+        current session/user.  Called by coop and market apps to
+        populate the cart-mini widget without importing cart services.
+        """
+        ident = current_cart_identity()
+
+        # --- product cart ---
+        cart_filters = [CartItem.deleted_at.is_(None)]
+        if ident["user_id"] is not None:
+            cart_filters.append(CartItem.user_id == ident["user_id"])
+        else:
+            cart_filters.append(CartItem.session_id == ident["session_id"])
+
+        result = await g.s.execute(
+            select(CartItem)
+            .where(*cart_filters)
+            .options(selectinload(CartItem.product))
+            .order_by(CartItem.created_at.desc())
+        )
+        cart_items = result.scalars().all()
+
+        cart_count = sum(ci.quantity for ci in cart_items)
+        cart_total = sum(
+            (ci.product.special_price or ci.product.regular_price or 0) * ci.quantity
+            for ci in cart_items
+            if ci.product and (ci.product.special_price or ci.product.regular_price)
+        )
+
+        # --- calendar entries ---
+        cal_filters = [
+            CalendarEntry.deleted_at.is_(None),
+            CalendarEntry.state == "pending",
+        ]
+        if ident["user_id"] is not None:
+            cal_filters.append(CalendarEntry.user_id == ident["user_id"])
+        else:
+            cal_filters.append(CalendarEntry.session_id == ident["session_id"])
+
+        cal_result = await g.s.execute(
+            select(CalendarEntry).where(*cal_filters)
+        )
+        cal_entries = cal_result.scalars().all()
+
+        calendar_count = len(cal_entries)
+        calendar_total = sum((e.cost or 0) for e in cal_entries if e.cost is not None)
+
+        items = [
+            {
+                "slug": ci.product.slug if ci.product else None,
+                "title": ci.product.title if ci.product else None,
+                "image": ci.product.image if ci.product else None,
+                "quantity": ci.quantity,
+                "price": float(ci.product.special_price or ci.product.regular_price or 0)
+                if ci.product
+                else 0,
+            }
+            for ci in cart_items
+        ]
+
+        return jsonify(
+            {
+                "count": cart_count,
+                "total": float(cart_total),
+                "calendar_count": calendar_count,
+                "calendar_total": float(calendar_total),
+                "items": items,
+            }
+        )
+
+    @bp.post("/adopt")
+    @csrf_exempt
+    async def adopt():
+        """
+        Adopt anonymous cart items + calendar entries for a user.
+        Called by the coop app after successful login.
+
+        Body: {"user_id": int, "session_id": str}
+        """
+        data = await request.get_json() or {}
+        user_id = data.get("user_id")
+        session_id = data.get("session_id")
+
+        if not user_id or not session_id:
+            return jsonify({"ok": False, "error": "user_id and session_id required"}), 400
+
+        # --- adopt cart items ---
+        anon_result = await g.s.execute(
+            select(CartItem).where(
+                CartItem.deleted_at.is_(None),
+                CartItem.user_id.is_(None),
+                CartItem.session_id == session_id,
+            )
+        )
+        anon_items = anon_result.scalars().all()
+
+        if anon_items:
+            # Soft-delete existing user cart
+            await g.s.execute(
+                update(CartItem)
+                .where(CartItem.deleted_at.is_(None), CartItem.user_id == user_id)
+                .values(deleted_at=func.now())
+            )
+            for ci in anon_items:
+                ci.user_id = user_id
+
+        # --- adopt calendar entries ---
+        await g.s.execute(
+            update(CalendarEntry)
+            .where(CalendarEntry.deleted_at.is_(None), CalendarEntry.user_id == user_id)
+            .values(deleted_at=func.now())
+        )
+        cal_result = await g.s.execute(
+            select(CalendarEntry).where(
+                CalendarEntry.deleted_at.is_(None),
+                CalendarEntry.session_id == session_id,
+            )
+        )
+        for entry in cal_result.scalars().all():
+            entry.user_id = user_id
+
+        return jsonify({"ok": True})
+
+    return bp

bp/cart/login_helper.py

@@ -0,0 +1,57 @@
+# app/cart_merge.py
+
+from __future__ import annotations
+
+from quart import g, session as qsession
+from sqlalchemy import select
+from typing import Optional
+
+from models.market import CartItem
+
+
+async def merge_anonymous_cart_into_user(user_id: int) -> None:
+    """
+    When a user logs in, move any anonymous cart (session_id) items onto their user_id.
+    """
+    sid: Optional[str] = qsession.get("cart_sid")
+    if not sid:
+        return
+
+    # get all anon cart items for this session
+    anon_items = (
+        await g.s.execute(
+            select(CartItem).where(
+                CartItem.deleted_at.is_(None),
+                CartItem.session_id == sid,
+            )
+        )
+    ).scalars().all()
+    if not anon_items:
+        return
+
+    # Existing user items keyed by product_id for quick merge
+    user_items_by_product = {
+        ci.product_id: ci
+        for ci in (
+            await g.s.execute(
+                select(CartItem).where(
+                    CartItem.deleted_at.is_(None),
+                    CartItem.user_id == user_id,
+                )
+            )
+        ).scalars().all()
+    }
+
+    for anon in anon_items:
+        existing = user_items_by_product.get(anon.product_id)
+        if existing:
+            # merge quantities then soft-delete the anon row
+            existing.quantity += anon.quantity
+            anon.deleted_at = func.now()
+        else:
+            # reassign anonymous cart row to this user
+            anon.user_id = user_id
+            anon.session_id = None
+
+    # clear the anonymous session id now that it's "claimed"
+    qsession.pop("cart_sid", None)

bp/cart/routes.py

@@ -0,0 +1,236 @@
+# app/bp/cart/routes.py
+
+from __future__ import annotations
+
+from quart import Blueprint, g, request, render_template, redirect, url_for, make_response
+from sqlalchemy import select, update
+from sqlalchemy.orm import selectinload
+
+from models.market import Product, CartItem
+from models.order import Order, OrderItem
+from suma_browser.app.payments.sumup import create_checkout as sumup_create_checkout
+from .services import (
+  current_cart_identity,
+  get_cart,
+  total,
+  clear_cart_for_order,
+  get_calendar_cart_entries,  # NEW
+  calendar_total,             # NEW
+  check_sumup_status
+)
+from .services.checkout import (
+    find_or_create_cart_item,
+    create_order_from_cart,
+    build_sumup_description,
+    build_sumup_reference,
+    build_webhook_url,
+    validate_webhook_secret,
+    get_order_with_details,
+)
+from config import config
+from models.calendars import CalendarEntry  # NEW
+from suma_browser.app.utils.htmx import is_htmx_request
+
+def register(url_prefix: str) -> Blueprint:
+    bp = Blueprint("cart", __name__, url_prefix=url_prefix)
+
+    # NOTE: load_cart moved to shared/cart_loader.py
+    # and registered in shared/factory.py as an app-level before_request
+
+
+    
+    #@bp.context_processor
+    #async def inject_root():
+
+    #  return {
+    #    "total": total,
+    #    "calendar_total": calendar_total,  # NEW helper
+    #    
+    #  }
+
+    @bp.get("/")
+    async def view_cart():
+        if not is_htmx_request():
+          # Normal browser request: full page with layout
+          html = await render_template(
+            "_types/cart/index.html",
+            )
+        else:
+            
+            html = await render_template(
+              "_types/cart/_oob_elements.html",
+            )
+        return await make_response(html)
+
+
+    @bp.post("/add/<int:product_id>/")
+    async def add_to_cart(product_id: int):
+        ident = current_cart_identity()
+
+        cart_item = await find_or_create_cart_item(
+            g.s,
+            product_id,
+            ident["user_id"],
+            ident["session_id"],
+        )
+
+        if not cart_item:
+            return await make_response("Product not found", 404)
+
+        # htmx support (optional)
+        if request.headers.get("HX-Request") == "true":
+            return await view_cart()
+
+        # normal POST: go to cart page
+        return redirect(url_for("cart.view_cart"))
+
+
+    @bp.post("/checkout/")
+    async def checkout():
+        """Create an Order from the current cart and redirect to SumUp Hosted Checkout."""
+        # Build cart
+        cart = await get_cart(g.s)
+        calendar_entries = await get_calendar_cart_entries(g.s)
+
+        if not cart and not calendar_entries:
+            return redirect(url_for("cart.view_cart"))
+
+        product_total = total(cart) or 0
+        calendar_amount = calendar_total(calendar_entries) or 0
+        cart_total = product_total + calendar_amount
+
+        if cart_total <= 0:
+            return redirect(url_for("cart.view_cart"))
+
+        # Create order from cart
+        ident = current_cart_identity()
+        order = await create_order_from_cart(
+            g.s,
+            cart,
+            calendar_entries,
+            ident.get("user_id"),
+            ident.get("session_id"),
+            product_total,
+            calendar_amount,
+        )
+
+        # Build SumUp checkout details
+        redirect_url = url_for("cart.checkout_return", order_id=order.id, _external=True)
+        order.sumup_reference = build_sumup_reference(order.id)
+        description = build_sumup_description(cart, order.id)
+
+        webhook_base_url = url_for("cart.checkout_webhook", order_id=order.id, _external=True)
+        webhook_url = build_webhook_url(webhook_base_url)
+
+        checkout_data = await sumup_create_checkout(
+            order,
+            redirect_url=redirect_url,
+            webhook_url=webhook_url,
+            description=description,
+        )
+        await clear_cart_for_order(g.s, order)
+
+        order.sumup_checkout_id = checkout_data.get("id")
+        order.sumup_status = checkout_data.get("status")
+        order.description = checkout_data.get("description")
+
+        hosted_cfg = checkout_data.get("hosted_checkout") or {}
+        hosted_url = hosted_cfg.get("hosted_checkout_url") or checkout_data.get("hosted_checkout_url")
+        order.sumup_hosted_url = hosted_url
+
+        await g.s.flush()
+
+        if not hosted_url:
+            html = await render_template(
+                "_types/cart/checkout_error.html",
+                order=order,
+                error="No hosted checkout URL returned from SumUp.",
+            )
+            return await make_response(html, 500)
+
+        return redirect(hosted_url)
+    
+
+    @bp.post("/checkout/webhook/<int:order_id>/")
+    async def checkout_webhook(order_id: int):
+        """
+        Webhook endpoint for SumUp CHECKOUT_STATUS_CHANGED events.
+
+        Security:
+        - Optional shared secret in ?token=... (checked against config sumup.webhook_secret)
+        - We *always* verify the event by calling SumUp's API.
+        """
+        # Optional shared secret check
+        if not validate_webhook_secret(request.args.get("token")):
+            return "", 204
+
+        try:
+            payload = await request.get_json()
+        except Exception:
+            payload = None
+
+        if not isinstance(payload, dict):
+            return "", 204
+
+        if payload.get("event_type") != "CHECKOUT_STATUS_CHANGED":
+            return "", 204
+
+        checkout_id = payload.get("id")
+        if not checkout_id:
+            return "", 204
+
+        # Look up our order
+        result = await g.s.execute(select(Order).where(Order.id == order_id))
+        order = result.scalar_one_or_none()
+        if not order:
+            return "", 204
+
+        # Make sure the checkout id matches the one we stored
+        if order.sumup_checkout_id and order.sumup_checkout_id != checkout_id:
+            return "", 204
+
+        # Verify with SumUp
+        try:
+            await check_sumup_status(g.s, order)
+        except Exception:
+            pass
+
+        return "", 204
+
+
+
+    @bp.get("/checkout/return/<int:order_id>/")
+    async def checkout_return(order_id: int):
+      """Handle the browser returning from SumUp after payment."""
+      order = await get_order_with_details(g.s, order_id)
+
+      if not order:
+          html = await render_template(
+              "_types/cart/checkout_return.html",
+              order=None,
+              status="missing",
+              calendar_entries=[],
+          )
+          return await make_response(html)
+
+      status = (order.status or "pending").lower()
+
+      # Optionally refresh status from SumUp
+      if order.sumup_checkout_id:
+          try:
+              await check_sumup_status(g.s, order)
+          except Exception:
+              status = status or "pending"
+
+      calendar_entries = order.calendar_entries or []
+      await g.s.flush()
+
+      html = await render_template(
+          "_types/cart/checkout_return.html",
+          order=order,
+          status=status,
+          calendar_entries=calendar_entries,
+      )
+      return await make_response(html)
+
+    return bp

bp/cart/services/__init__.py

@@ -0,0 +1,8 @@
+from .get_cart import get_cart
+from .identity import current_cart_identity
+from .total import total
+from .clear_cart_for_order import clear_cart_for_order
+from .adopt_session_cart_for_user import adopt_session_cart_for_user
+from .calendar_cart import get_calendar_cart_entries, calendar_total
+from .check_sumup_status import check_sumup_status
+

bp/cart/services/adopt_session_cart_for_user.py

@@ -0,0 +1,46 @@
+from sqlalchemy import select, update, func
+
+from models.market import CartItem
+
+
+async def adopt_session_cart_for_user(session, user_id: int, session_id: str | None) -> None:
+    """
+    When a user logs in or registers:
+    - If there are cart items for this anonymous session, take them over.
+    - Replace any existing cart items for this user with the anonymous cart.
+    """
+
+    if not session_id:
+        return
+
+    # 1) Find anonymous cart items for this session
+    result = await session.execute(
+        select(CartItem)
+        .where(
+            CartItem.deleted_at.is_(None),
+            CartItem.user_id.is_(None),
+            CartItem.session_id == session_id,
+        )
+    )
+    anon_items = result.scalars().all()
+    if not anon_items:
+        # nothing to adopt
+        return
+
+    # 2) Soft-delete any existing cart for this user
+    await session.execute(
+        update(CartItem)
+        .where(
+            CartItem.deleted_at.is_(None),
+            CartItem.user_id == user_id,
+        )
+        .values(deleted_at=func.now())
+    )
+
+    # 3) Reassign anonymous cart items to the user
+    for ci in anon_items:
+        ci.user_id = user_id
+        # optional: you can keep the session_id as well, but user_id will take precedence
+        # ci.session_id = session_id
+
+    # No explicit commit here; caller's transaction will handle it

bp/cart/services/calendar_cart.py

@@ -0,0 +1,46 @@
+from __future__ import annotations
+
+from sqlalchemy import select
+from sqlalchemy.orm import selectinload
+
+from models.calendars import CalendarEntry
+from .identity import current_cart_identity
+
+
+async def get_calendar_cart_entries(session):
+    """
+    Return all *pending* calendar entries for the current cart identity
+    (user or anonymous session).
+    """
+    ident = current_cart_identity()
+
+    filters = [
+        CalendarEntry.deleted_at.is_(None),
+        CalendarEntry.state == "pending",
+    ]
+
+    if ident["user_id"] is not None:
+        filters.append(CalendarEntry.user_id == ident["user_id"])
+    else:
+        filters.append(CalendarEntry.session_id == ident["session_id"])
+
+    result = await session.execute(
+        select(CalendarEntry)
+        .where(*filters)
+        .order_by(CalendarEntry.start_at.asc())
+        .options(
+            selectinload(CalendarEntry.calendar),
+        )
+    )
+    return result.scalars().all()
+
+
+def calendar_total(entries) -> float:
+    """
+    Total cost of pending calendar entries.
+    """
+    return sum(
+        (e.cost or 0)
+        for e in entries
+        if e.cost is not None
+    )

bp/cart/services/check_sumup_status.py

@@ -0,0 +1,35 @@
+from suma_browser.app.payments.sumup import get_checkout as sumup_get_checkout
+from sqlalchemy import update
+from models.calendars import CalendarEntry  # NEW
+
+
+async def check_sumup_status(session, order):
+    checkout_data = await sumup_get_checkout(order.sumup_checkout_id)
+    order.sumup_status = checkout_data.get("status") or order.sumup_status
+    sumup_status = (order.sumup_status or "").upper()
+
+    if sumup_status == "PAID":
+        if order.status != "paid":
+            order.status = "paid"
+            filters = [
+                CalendarEntry.deleted_at.is_(None),
+                CalendarEntry.state == "ordered",
+                CalendarEntry.order_id==order.id,
+            ]
+            if order.user_id is not None:
+                filters.append(CalendarEntry.user_id == order.user_id)
+            elif order.session_id is not None:
+                filters.append(CalendarEntry.session_id == order.session_id)
+
+            await session.execute(
+                update(CalendarEntry)
+                .where(*filters)
+                .values(state="provisional")
+            )
+            # also clear cart for this user/session if it wasn't already
+    elif sumup_status == "FAILED":
+        order.status = "failed"
+    else:
+        order.status = sumup_status.lower() or order.status
+
+    await g.s.flush()

bp/cart/services/checkout.py

@@ -0,0 +1,182 @@
+from __future__ import annotations
+
+from typing import Optional
+from urllib.parse import urlencode
+
+from sqlalchemy import select, update
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.orm import selectinload
+
+from models.market import Product, CartItem
+from models.order import Order, OrderItem
+from models.calendars import CalendarEntry
+from config import config
+
+
+async def find_or_create_cart_item(
+    session: AsyncSession,
+    product_id: int,
+    user_id: Optional[int],
+    session_id: Optional[str],
+) -> Optional[CartItem]:
+    """
+    Find an existing cart item for this product/identity, or create a new one.
+    Returns None if the product doesn't exist.
+    Increments quantity if item already exists.
+    """
+    # Make sure product exists
+    product = await session.scalar(
+        select(Product).where(Product.id == product_id)
+    )
+    if not product:
+        return None
+
+    # Look for existing cart item
+    filters = [
+        CartItem.deleted_at.is_(None),
+        CartItem.product_id == product_id,
+    ]
+    if user_id is not None:
+        filters.append(CartItem.user_id == user_id)
+    else:
+        filters.append(CartItem.session_id == session_id)
+
+    existing = await session.scalar(select(CartItem).where(*filters))
+
+    if existing:
+        existing.quantity += 1
+        return existing
+    else:
+        cart_item = CartItem(
+            user_id=user_id,
+            session_id=session_id,
+            product_id=product.id,
+            quantity=1,
+        )
+        session.add(cart_item)
+        return cart_item
+
+
+async def create_order_from_cart(
+    session: AsyncSession,
+    cart: list[CartItem],
+    calendar_entries: list[CalendarEntry],
+    user_id: Optional[int],
+    session_id: Optional[str],
+    product_total: float,
+    calendar_total: float,
+) -> Order:
+    """
+    Create an Order and OrderItems from the current cart + calendar entries.
+    Returns the created Order.
+    """
+    cart_total = product_total + calendar_total
+
+    # Determine currency from first product
+    first_product = cart[0].product if cart else None
+    currency = (first_product.regular_price_currency if first_product else None) or "GBP"
+
+    # Create order
+    order = Order(
+        user_id=user_id,
+        session_id=session_id,
+        status="pending",
+        currency=currency,
+        total_amount=cart_total,
+    )
+    session.add(order)
+    await session.flush()
+
+    # Create order items from cart
+    for ci in cart:
+        price = ci.product.special_price or ci.product.regular_price or 0
+        oi = OrderItem(
+            order=order,
+            product_id=ci.product.id,
+            product_title=ci.product.title,
+            quantity=ci.quantity,
+            unit_price=price,
+            currency=currency,
+        )
+        session.add(oi)
+
+    # Update calendar entries to reference this order
+    calendar_filters = [
+        CalendarEntry.deleted_at.is_(None),
+        CalendarEntry.state == "pending",
+    ]
+
+    if order.user_id is not None:
+        calendar_filters.append(CalendarEntry.user_id == order.user_id)
+    elif order.session_id is not None:
+        calendar_filters.append(CalendarEntry.session_id == order.session_id)
+
+    await session.execute(
+        update(CalendarEntry)
+        .where(*calendar_filters)
+        .values(
+            state="ordered",
+            order_id=order.id,
+        )
+    )
+
+    return order
+
+
+def build_sumup_description(cart: list[CartItem], order_id: int) -> str:
+    """Build a human-readable description for SumUp checkout."""
+    titles = [ci.product.title for ci in cart if ci.product and ci.product.title]
+    item_count = sum(ci.quantity for ci in cart)
+
+    if titles:
+        if len(titles) <= 3:
+            summary = ", ".join(titles)
+        else:
+            summary = ", ".join(titles[:3]) + f" + {len(titles) - 3} more"
+    else:
+        summary = "order items"
+
+    return f"Order {order_id} ({item_count} item{'s' if item_count != 1 else ''}): {summary}"
+
+
+def build_sumup_reference(order_id: int) -> str:
+    """Build a SumUp reference with configured prefix."""
+    sumup_cfg = config().get("sumup", {}) or {}
+    prefix = sumup_cfg.get("checkout_reference_prefix", "")
+    return f"{prefix}{order_id}"
+
+
+def build_webhook_url(base_url: str) -> str:
+    """Add webhook secret token to URL if configured."""
+    sumup_cfg = config().get("sumup", {}) or {}
+    webhook_secret = sumup_cfg.get("webhook_secret")
+
+    if webhook_secret:
+        sep = "&" if "?" in base_url else "?"
+        return f"{base_url}{sep}{urlencode({'token': webhook_secret})}"
+
+    return base_url
+
+
+def validate_webhook_secret(token: Optional[str]) -> bool:
+    """Validate webhook token against configured secret."""
+    sumup_cfg = config().get("sumup", {}) or {}
+    webhook_secret = sumup_cfg.get("webhook_secret")
+
+    if not webhook_secret:
+        return True  # No secret configured, allow all
+
+    return token is not None and token == webhook_secret
+
+
+async def get_order_with_details(session: AsyncSession, order_id: int) -> Optional[Order]:
+    """Fetch an order with items and calendar entries eagerly loaded."""
+    result = await session.execute(
+        select(Order)
+        .options(
+            selectinload(Order.items).selectinload(OrderItem.product),
+            selectinload(Order.calendar_entries),
+        )
+        .where(Order.id == order_id)
+    )
+    return result.scalar_one_or_none()

bp/cart/services/clear_cart_for_order.py

@@ -0,0 +1,27 @@
+from sqlalchemy import update, func
+
+from models.market import CartItem
+from models.order import Order
+# ...
+
+# helper function near the top of the file (outside register())
+async def clear_cart_for_order(session, order: Order) -> None:
+    """
+    Soft-delete all CartItem rows belonging to this order's user_id/session_id.
+    Called when an order is marked as paid.
+    """
+    filters = [CartItem.deleted_at.is_(None)]
+    if order.user_id is not None:
+        filters.append(CartItem.user_id == order.user_id)
+    if order.session_id is not None:
+        filters.append(CartItem.session_id == order.session_id)
+
+    if len(filters) == 1:
+        # no user_id/session_id on order – nothing to clear
+        return
+
+    await session.execute(
+        update(CartItem)
+        .where(*filters)
+        .values(deleted_at=func.now())
+    )

bp/cart/services/get_cart.py

@@ -0,0 +1,24 @@
+from sqlalchemy import select
+from sqlalchemy.orm import selectinload
+
+from models.market import CartItem
+from .identity import current_cart_identity
+
+async def get_cart(session):
+  ident = current_cart_identity()
+  
+  filters = [CartItem.deleted_at.is_(None)]
+  if ident["user_id"] is not None:
+      filters.append(CartItem.user_id == ident["user_id"])
+  else:
+      filters.append(CartItem.session_id == ident["session_id"])
+
+  result = await session.execute(
+      select(CartItem)
+      .where(*filters)
+      .order_by(CartItem.created_at.desc())
+      .options(
+          selectinload(CartItem.product),  # <-- important bit
+      )
+  )
+  return result.scalars().all()

bp/cart/services/identity.py

@@ -0,0 +1,4 @@
+# Re-export from canonical shared location
+from shared.cart_identity import CartIdentity, current_cart_identity
+
+__all__ = ["CartIdentity", "current_cart_identity"]

bp/cart/services/total.py

@@ -0,0 +1,7 @@
+def total(cart):
+    return sum(
+        (item.product.special_price or item.product.regular_price) * item.quantity
+        for item in cart
+        if (item.product.special_price or item.product.regular_price) is not None
+    )
+