Product Sale Module done (Sales Detail) -- need to rename the permission

barker/routes.py

@@ -362,6 +362,7 @@ def includeme(config):
     config.add_route("v1_sa_tax", "/v1/sale-analysis/tax")
     config.add_route("v1_sale_analysis", "/v1/sale-analysis")
 
+    config.add_route("v1_product_sale_report", "/v1/product-sale-report")
     # Done till here
 
     config.add_route("customer", "/Customer.json")

barker/views/reports/product_sale_report.py

@@ -0,0 +1,88 @@
+from datetime import datetime, timedelta
+from pyramid.view import view_config
+from sqlalchemy import func
+
+from barker.models import (
+    Inventory,
+    Kot,
+    Product,
+    Voucher,
+    SaleCategory,
+    VoucherType,
+    MenuCategory,
+)
+from barker.models.validation_exception import ValidationError
+from barker.views.reports import get_start_date, get_finish_date
+
+
+@view_config(
+    request_method="GET",
+    route_name="v1_product_sale_report",
+    renderer="json",
+    permission="Sales Detail",
+)
+def product_sale_report_view(request):
+    start_date = get_start_date(request.GET.get("s", None))
+    finish_date = get_finish_date(request.GET.get("f", None))
+
+    if (
+        datetime.today() - start_date.replace(hour=0)
+    ).days > 5 and "Accounts Audit" not in request.effective_principals:
+        raise ValidationError("Accounts Audit")
+
+    return {
+        "startDate": start_date.date().strftime("%d-%b-%Y"),
+        "finishDate": (finish_date - timedelta(days=1)).date().strftime("%d-%b-%Y"),
+        "amounts": product_sale_report(start_date, finish_date, request.dbsession),
+    }
+
+
+def product_sale_report(start_date, finish_date, dbsession):
+    list_ = (
+        dbsession.query(
+            Product.id,
+            Product.full_name,
+            Voucher.voucher_type,
+            Inventory.is_happy_hour,
+            func.sum(Inventory.quantity),
+        )
+        .join(Inventory.kot)
+        .join(Kot.voucher)
+        .join(Inventory.product)
+        .join(Product.sale_category)
+        .join(Product.menu_category)
+        .filter(Voucher.date >= start_date, Voucher.date <= finish_date)
+        .group_by(
+            SaleCategory.name,
+            MenuCategory.name,
+            Product.id,
+            Product.full_name,
+            Voucher.voucher_type,
+            Inventory.is_happy_hour,
+        )
+        .order_by(SaleCategory.name, MenuCategory.name)
+        .all()
+    )
+    info = []
+    for id_, name, type_, hh, quantity in list_:
+        type_ = to_camel_case(VoucherType(type_).name)
+        old = [i for i in info if i["id"] == id_ and i["isHappyHour"] == hh]
+        if len(old):
+            old[0][type_] = quantity
+        else:
+            info.append(
+                {
+                    "id": id_,
+                    "name": "H H " + name if hh else name,
+                    "isHappyHour": hh,
+                    type_: quantity,
+                }
+            )
+    return info
+
+
+def to_camel_case(snake_str):
+    components = snake_str.split("_")
+    # We capitalize the first letter of each component except the first one
+    # with the 'title' method and join them together.
+    return components[0].lower() + "".join(x.title() for x in components[1:])