Split cart into 4 microservices: relations, likes, orders, page-config→blog

Phase 1 - Relations service (internal): owns ContainerRelation, exposes
get-children data + attach/detach-child actions. Retargeted events, blog,
market callers from cart to relations.

Phase 2 - Likes service (internal): unified Like model replaces ProductLike
and PostLike with generic target_type/target_slug/target_id. Exposes
is-liked, liked-slugs, liked-ids data + toggle action.

Phase 3 - PageConfig → blog: moved ownership to blog with direct DB queries,
removed proxy endpoints from cart.

Phase 4 - Orders service (public): owns Order/OrderItem + SumUp checkout
flow. Cart checkout now delegates to orders via create-order action.
Webhook/return routes and reconciliation moved to orders.

Phase 5 - Infrastructure: docker-compose, deploy.sh, Dockerfiles updated
for all 3 new services. Added orders_url helper and factory model imports.

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

orders/bp/orders/filters/qs.py

@@ -0,0 +1,77 @@
+# suma_browser/app/bp/orders/filters/qs.py
+from quart import request
+
+from typing import Iterable, Optional, Union
+
+from shared.browser.app.filters.qs_base import KEEP, build_qs
+from shared.browser.app.filters.query_types import OrderQuery
+
+
+def decode() -> OrderQuery:
+    """
+    Decode current query string into an OrderQuery(page, search).
+    """
+    try:
+        page = int(request.args.get("page", 1) or 1)
+    except ValueError:
+        page = 1
+
+    search = request.args.get("search") or None
+    return OrderQuery(page, search)
+
+
+def makeqs_factory():
+    """
+    Build a makeqs(...) that starts from the current filters + page.
+
+    Behaviour:
+    - If filters change and you don't explicitly pass page,
+      the page is reset to 1 (same pattern as browse/blog).
+    - You can clear search with search=None.
+    """
+    q = decode()
+    base_search = q.search or None
+    base_page = int(q.page or 1)
+
+    def makeqs(
+        *,
+        clear_filters: bool = False,
+        search: Union[str, None, object] = KEEP,
+        page: Union[int, None, object] = None,
+        extra: Optional[Iterable[tuple]] = None,
+        leading_q: bool = True,
+    ) -> str:
+        filters_changed = False
+
+        # --- search logic ---
+        if search is KEEP and not clear_filters:
+            final_search = base_search
+        else:
+            filters_changed = True
+            if search is KEEP:
+                final_search = None
+            else:
+                final_search = (search or None)
+
+        # --- page logic ---
+        if page is None:
+            final_page = 1 if filters_changed else base_page
+        else:
+            final_page = page
+
+        # --- build params ---
+        params: list[tuple[str, str]] = []
+
+        if final_search:
+            params.append(("search", final_search))
+        if final_page is not None:
+            params.append(("page", str(final_page)))
+
+        if extra:
+            for k, v in extra:
+                if v is not None:
+                    params.append((k, str(v)))
+
+        return build_qs(params, leading_q=leading_q)
+
+    return makeqs

orders/bp/orders/routes.py

@@ -0,0 +1,138 @@
+from __future__ import annotations
+
+from quart import Blueprint, g, render_template, redirect, url_for, make_response
+from sqlalchemy import select, func, or_, cast, String, exists
+from sqlalchemy.orm import selectinload
+
+from shared.models.order import Order, OrderItem
+
+from shared.infrastructure.http_utils import vary as _vary, current_url_without_page as _current_url_without_page
+from shared.infrastructure.cart_identity import current_cart_identity
+from shared.browser.app.utils.htmx import is_htmx_request
+from bp.order.routes import register as register_order
+
+from .filters.qs import makeqs_factory, decode
+
+
+def register(url_prefix: str) -> Blueprint:
+    bp = Blueprint("orders", __name__, url_prefix=url_prefix)
+    bp.register_blueprint(register_order())
+
+    ORDERS_PER_PAGE = 10
+
+    oob = {
+        "extends": "_types/root/_index.html",
+        "child_id": "auth-header-child",
+        "header": "_types/auth/header/_header.html",
+        "nav": "_types/auth/_nav.html",
+        "main": "_types/auth/_main_panel.html",
+    }
+
+    @bp.context_processor
+    def inject_oob():
+        return {"oob": oob}
+
+    @bp.before_request
+    def route():
+        g.makeqs_factory = makeqs_factory
+
+    @bp.before_request
+    async def _require_identity():
+        """Orders require a logged-in user or at least a cart session."""
+        ident = current_cart_identity()
+        if not ident["user_id"] and not ident["session_id"]:
+            return redirect(url_for("auth.login_form"))
+
+    @bp.get("/")
+    async def list_orders():
+        ident = current_cart_identity()
+        if ident["user_id"]:
+            owner_clause = Order.user_id == ident["user_id"]
+        elif ident["session_id"]:
+            owner_clause = Order.session_id == ident["session_id"]
+        else:
+            return redirect(url_for("auth.login_form"))
+
+        q = decode()
+        page, search = q.page, q.search
+        if page < 1:
+            page = 1
+
+        where_clause = None
+        if search:
+            term = f"%{search.strip()}%"
+            conditions = [
+                Order.status.ilike(term),
+                Order.currency.ilike(term),
+                Order.sumup_checkout_id.ilike(term),
+                Order.sumup_status.ilike(term),
+                Order.description.ilike(term),
+            ]
+            conditions.append(
+                exists(
+                    select(1)
+                    .select_from(OrderItem)
+                    .where(
+                        OrderItem.order_id == Order.id,
+                        or_(
+                            OrderItem.product_title.ilike(term),
+                            OrderItem.product_slug.ilike(term),
+                        ),
+                    )
+                )
+            )
+            try:
+                search_id = int(search)
+            except (TypeError, ValueError):
+                search_id = None
+            if search_id is not None:
+                conditions.append(Order.id == search_id)
+            else:
+                conditions.append(cast(Order.id, String).ilike(term))
+            where_clause = or_(*conditions)
+
+        count_stmt = select(func.count()).select_from(Order).where(owner_clause)
+        if where_clause is not None:
+            count_stmt = count_stmt.where(where_clause)
+
+        total_count_result = await g.s.execute(count_stmt)
+        total_count = total_count_result.scalar_one() or 0
+        total_pages = max(1, (total_count + ORDERS_PER_PAGE - 1) // ORDERS_PER_PAGE)
+
+        if page > total_pages:
+            page = total_pages
+
+        offset = (page - 1) * ORDERS_PER_PAGE
+        stmt = (
+            select(Order)
+            .where(owner_clause)
+            .order_by(Order.created_at.desc())
+            .offset(offset)
+            .limit(ORDERS_PER_PAGE)
+        )
+        if where_clause is not None:
+            stmt = stmt.where(where_clause)
+
+        result = await g.s.execute(stmt)
+        orders = result.scalars().all()
+
+        context = {
+            "orders": orders,
+            "page": page,
+            "total_pages": total_pages,
+            "search": search,
+            "search_count": total_count,
+        }
+
+        if not is_htmx_request():
+            html = await render_template("_types/orders/index.html", **context)
+        elif page > 1:
+            html = await render_template("_types/orders/_rows.html", **context)
+        else:
+            html = await render_template("_types/orders/_oob_elements.html", **context)
+
+        resp = await make_response(html)
+        resp.headers["Hx-Push-Url"] = _current_url_without_page()
+        return _vary(resp)
+
+    return bp