Merge pull request #31194 from ruthra-kumar/bug_sales_order_analysis_report

fix: incorrect billed_qty in sales order analysis report when multiple delivery notes for item
diff --git a/erpnext/selling/report/sales_order_analysis/sales_order_analysis.py b/erpnext/selling/report/sales_order_analysis/sales_order_analysis.py
index dcfb10a..cc61594 100644
--- a/erpnext/selling/report/sales_order_analysis/sales_order_analysis.py
+++ b/erpnext/selling/report/sales_order_analysis/sales_order_analysis.py
@@ -1,11 +1,13 @@
 # Copyright (c) 2013, Frappe Technologies Pvt. Ltd. and contributors
 # For license information, please see license.txt
 
-
 import copy
+from collections import OrderedDict
 
 import frappe
-from frappe import _
+from frappe import _, qb
+from frappe.query_builder import CustomFunction
+from frappe.query_builder.functions import Max
 from frappe.utils import date_diff, flt, getdate
 
 
@@ -18,11 +20,12 @@
 	columns = get_columns(filters)
 	conditions = get_conditions(filters)
 	data = get_data(conditions, filters)
+	so_elapsed_time = get_so_elapsed_time(data)
 
 	if not data:
 		return [], [], None, []
 
-	data, chart_data = prepare_data(data, filters)
+	data, chart_data = prepare_data(data, so_elapsed_time, filters)
 
 	return columns, data, None, chart_data
 
@@ -65,7 +68,6 @@
 			IF(so.status in ('Completed','To Bill'), 0, (SELECT delay_days)) as delay,
 			soi.qty, soi.delivered_qty,
 			(soi.qty - soi.delivered_qty) AS pending_qty,
-			IF((SELECT pending_qty) = 0, (TO_SECONDS(Max(dn.posting_date))-TO_SECONDS(so.transaction_date)), 0) as time_taken_to_deliver,
 			IFNULL(SUM(sii.qty), 0) as billed_qty,
 			soi.base_amount as amount,
 			(soi.delivered_qty * soi.base_rate) as delivered_qty_amount,
@@ -76,13 +78,9 @@
 			soi.description as description
 		FROM
 			`tabSales Order` so,
-			(`tabSales Order Item` soi
+			`tabSales Order Item` soi
 		LEFT JOIN `tabSales Invoice Item` sii
-			ON sii.so_detail = soi.name and sii.docstatus = 1)
-		LEFT JOIN `tabDelivery Note Item` dni
-			on dni.so_detail = soi.name
-		LEFT JOIN `tabDelivery Note` dn
-			on dni.parent = dn.name and dn.docstatus = 1
+			ON sii.so_detail = soi.name and sii.docstatus = 1
 		WHERE
 			soi.parent = so.name
 			and so.status not in ('Stopped', 'Closed', 'On Hold')
@@ -100,7 +98,48 @@
 	return data
 
 
-def prepare_data(data, filters):
+def get_so_elapsed_time(data):
+	"""
+	query SO's elapsed time till latest delivery note
+	"""
+	so_elapsed_time = OrderedDict()
+	if data:
+		sales_orders = [x.sales_order for x in data]
+
+		so = qb.DocType("Sales Order")
+		soi = qb.DocType("Sales Order Item")
+		dn = qb.DocType("Delivery Note")
+		dni = qb.DocType("Delivery Note Item")
+
+		to_seconds = CustomFunction("TO_SECONDS", ["date"])
+
+		query = (
+			qb.from_(so)
+			.inner_join(soi)
+			.on(soi.parent == so.name)
+			.left_join(dni)
+			.on(dni.so_detail == soi.name)
+			.left_join(dn)
+			.on(dni.parent == dn.name)
+			.select(
+				so.name.as_("sales_order"),
+				soi.item_code.as_("so_item_code"),
+				(to_seconds(Max(dn.posting_date)) - to_seconds(so.transaction_date)).as_("elapsed_seconds"),
+			)
+			.where((so.name.isin(sales_orders)) & (dn.docstatus == 1))
+			.orderby(so.name, soi.name)
+			.groupby(soi.name)
+		)
+		dn_elapsed_time = query.run(as_dict=True)
+
+		for e in dn_elapsed_time:
+			key = (e.sales_order, e.so_item_code)
+			so_elapsed_time[key] = e.elapsed_seconds
+
+	return so_elapsed_time
+
+
+def prepare_data(data, so_elapsed_time, filters):
 	completed, pending = 0, 0
 
 	if filters.get("group_by_so"):
@@ -115,6 +154,13 @@
 		row["qty_to_bill"] = flt(row["qty"]) - flt(row["billed_qty"])
 
 		row["delay"] = 0 if row["delay"] and row["delay"] < 0 else row["delay"]
+
+		row["time_taken_to_deliver"] = (
+			so_elapsed_time.get((row.sales_order, row.item_code))
+			if row["status"] in ("To Bill", "Completed")
+			else 0
+		)
+
 		if filters.get("group_by_so"):
 			so_name = row["sales_order"]
 
diff --git a/erpnext/selling/report/sales_order_analysis/test_sales_order_analysis.py b/erpnext/selling/report/sales_order_analysis/test_sales_order_analysis.py
index 25cbb73..241f435 100644
--- a/erpnext/selling/report/sales_order_analysis/test_sales_order_analysis.py
+++ b/erpnext/selling/report/sales_order_analysis/test_sales_order_analysis.py
@@ -11,7 +11,7 @@
 
 
 class TestSalesOrderAnalysis(FrappeTestCase):
-	def create_sales_order(self, transaction_date):
+	def create_sales_order(self, transaction_date, do_not_save=False, do_not_submit=False):
 		item = create_item(item_code="_Test Excavator", is_stock_item=0)
 		so = make_sales_order(
 			transaction_date=transaction_date,
@@ -24,25 +24,31 @@
 		so.taxes_and_charges = ""
 		so.taxes = ""
 		so.items[0].delivery_date = add_days(transaction_date, 15)
-		so.save()
-		so.submit()
+		if not do_not_save:
+			so.save()
+			if not do_not_submit:
+				so.submit()
 		return item, so
 
-	def create_sales_invoice(self, so):
+	def create_sales_invoice(self, so, do_not_save=False, do_not_submit=False):
 		sinv = make_sales_invoice(so.name)
 		sinv.posting_date = so.transaction_date
 		sinv.taxes_and_charges = ""
 		sinv.taxes = ""
-		sinv.insert()
-		sinv.submit()
+		if not do_not_save:
+			sinv.save()
+			if not do_not_submit:
+				sinv.submit()
 		return sinv
 
-	def create_delivery_note(self, so):
+	def create_delivery_note(self, so, do_not_save=False, do_not_submit=False):
 		dn = make_delivery_note(so.name)
 		dn.set_posting_time = True
 		dn.posting_date = add_days(so.transaction_date, 1)
-		dn.save()
-		dn.submit()
+		if not do_not_save:
+			dn.save()
+			if not do_not_submit:
+				dn.submit()
 		return dn
 
 	def test_01_so_to_deliver_and_bill(self):
@@ -164,3 +170,85 @@
 		)
 		# SO's from first 4 test cases should be in output
 		self.assertEqual(len(data), 4)
+
+	def test_06_so_pending_delivery_with_multiple_delivery_notes(self):
+		transaction_date = "2021-06-01"
+		item, so = self.create_sales_order(transaction_date)
+
+		# bill 2 items
+		sinv1 = self.create_sales_invoice(so, do_not_save=True)
+		sinv1.items[0].qty = 2
+		sinv1 = sinv1.save().submit()
+		# deliver 2 items
+		dn1 = self.create_delivery_note(so, do_not_save=True)
+		dn1.items[0].qty = 2
+		dn1 = dn1.save().submit()
+
+		# bill 2 items
+		sinv2 = self.create_sales_invoice(so, do_not_save=True)
+		sinv2.items[0].qty = 2
+		sinv2 = sinv2.save().submit()
+		# deliver 1 item
+		dn2 = self.create_delivery_note(so, do_not_save=True)
+		dn2.items[0].qty = 1
+		dn2 = dn2.save().submit()
+
+		columns, data, message, chart = execute(
+			{
+				"company": "_Test Company",
+				"from_date": "2021-06-01",
+				"to_date": "2021-06-30",
+				"sales_order": [so.name],
+			}
+		)
+		expected_value = {
+			"status": "To Deliver and Bill",
+			"sales_order": so.name,
+			"delay_days": frappe.utils.date_diff(frappe.utils.datetime.date.today(), so.delivery_date),
+			"qty": 10,
+			"delivered_qty": 3,
+			"pending_qty": 7,
+			"qty_to_bill": 6,
+			"billed_qty": 4,
+			"time_taken_to_deliver": 0,
+		}
+		self.assertEqual(len(data), 1)
+		for key, val in expected_value.items():
+			with self.subTest(key=key, val=val):
+				self.assertEqual(data[0][key], val)
+
+	def test_07_so_delivered_with_multiple_delivery_notes(self):
+		transaction_date = "2021-06-01"
+		item, so = self.create_sales_order(transaction_date)
+
+		dn1 = self.create_delivery_note(so, do_not_save=True)
+		dn1.items[0].qty = 5
+		dn1 = dn1.save().submit()
+
+		dn2 = self.create_delivery_note(so, do_not_save=True)
+		dn2.items[0].qty = 5
+		dn2 = dn2.save().submit()
+
+		columns, data, message, chart = execute(
+			{
+				"company": "_Test Company",
+				"from_date": "2021-06-01",
+				"to_date": "2021-06-30",
+				"sales_order": [so.name],
+			}
+		)
+		expected_value = {
+			"status": "To Bill",
+			"sales_order": so.name,
+			"delay_days": frappe.utils.date_diff(frappe.utils.datetime.date.today(), so.delivery_date),
+			"qty": 10,
+			"delivered_qty": 10,
+			"pending_qty": 0,
+			"qty_to_bill": 10,
+			"billed_qty": 0,
+			"time_taken_to_deliver": 86400,
+		}
+		self.assertEqual(len(data), 1)
+		for key, val in expected_value.items():
+			with self.subTest(key=key, val=val):
+				self.assertEqual(data[0][key], val)