From 80e94a08cfccd888b91e921a3c8b2418b6aed6c0 Mon Sep 17 00:00:00 2001
From: Rohit Waghchaure <rohitw1991@gmail.com>
Date: Wed, 22 Feb 2023 13:29:06 +0530
Subject: [PATCH] fix: zero division error while making LCV

---
 .../landed_cost_voucher.py                    |  9 ++-
 .../test_landed_cost_voucher.py               | 55 ++++++++++++++++++-
 .../purchase_receipt/purchase_receipt.py      | 24 ++++++--
 3 files changed, 80 insertions(+), 8 deletions(-)

diff --git a/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py b/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py
index b3af309359..111a0861b7 100644
--- a/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py
+++ b/erpnext/stock/doctype/landed_cost_voucher/landed_cost_voucher.py
@@ -55,7 +55,6 @@ class LandedCostVoucher(Document):
 			self.get_items_from_purchase_receipts()
 
 		self.set_applicable_charges_on_item()
-		self.validate_applicable_charges_for_item()
 
 	def check_mandatory(self):
 		if not self.get("purchase_receipts"):
@@ -115,6 +114,13 @@ class LandedCostVoucher(Document):
 				total_item_cost += item.get(based_on_field)
 
 			for item in self.get("items"):
+				if not total_item_cost and not item.get(based_on_field):
+					frappe.throw(
+						_(
+							"It's not possible to distribute charges equally when total amount is zero, please set 'Distribute Charges Based On' as 'Quantity'"
+						)
+					)
+
 				item.applicable_charges = flt(
 					flt(item.get(based_on_field)) * (flt(self.total_taxes_and_charges) / flt(total_item_cost)),
 					item.precision("applicable_charges"),
@@ -162,6 +168,7 @@ class LandedCostVoucher(Document):
 			)
 
 	def on_submit(self):
+		self.validate_applicable_charges_for_item()
 		self.update_landed_cost()
 
 	def on_cancel(self):
diff --git a/erpnext/stock/doctype/landed_cost_voucher/test_landed_cost_voucher.py b/erpnext/stock/doctype/landed_cost_voucher/test_landed_cost_voucher.py
index 979b5c4f83..00fa1686c0 100644
--- a/erpnext/stock/doctype/landed_cost_voucher/test_landed_cost_voucher.py
+++ b/erpnext/stock/doctype/landed_cost_voucher/test_landed_cost_voucher.py
@@ -175,6 +175,59 @@ class TestLandedCostVoucher(FrappeTestCase):
 		)
 		self.assertEqual(last_sle_after_landed_cost.stock_value - last_sle.stock_value, 50.0)
 
+	def test_landed_cost_voucher_for_zero_purchase_rate(self):
+		"Test impact of LCV on future stock balances."
+		from erpnext.stock.doctype.item.test_item import make_item
+
+		item = make_item("LCV Stock Item", {"is_stock_item": 1})
+		warehouse = "Stores - _TC"
+
+		pr = make_purchase_receipt(
+			item_code=item.name,
+			warehouse=warehouse,
+			qty=10,
+			rate=0,
+			posting_date=add_days(frappe.utils.nowdate(), -2),
+		)
+
+		self.assertEqual(
+			frappe.db.get_value(
+				"Stock Ledger Entry",
+				{"voucher_type": "Purchase Receipt", "voucher_no": pr.name, "is_cancelled": 0},
+				"stock_value_difference",
+			),
+			0,
+		)
+
+		lcv = make_landed_cost_voucher(
+			company=pr.company,
+			receipt_document_type="Purchase Receipt",
+			receipt_document=pr.name,
+			charges=100,
+			distribute_charges_based_on="Distribute Manually",
+			do_not_save=True,
+		)
+
+		lcv.get_items_from_purchase_receipts()
+		lcv.items[0].applicable_charges = 100
+		lcv.save()
+		lcv.submit()
+
+		self.assertTrue(
+			frappe.db.exists(
+				"Stock Ledger Entry",
+				{"voucher_type": "Purchase Receipt", "voucher_no": pr.name, "is_cancelled": 0},
+			)
+		)
+		self.assertEqual(
+			frappe.db.get_value(
+				"Stock Ledger Entry",
+				{"voucher_type": "Purchase Receipt", "voucher_no": pr.name, "is_cancelled": 0},
+				"stock_value_difference",
+			),
+			100,
+		)
+
 	def test_landed_cost_voucher_against_purchase_invoice(self):
 
 		pi = make_purchase_invoice(
@@ -516,7 +569,7 @@ def make_landed_cost_voucher(**args):
 
 	lcv = frappe.new_doc("Landed Cost Voucher")
 	lcv.company = args.company or "_Test Company"
-	lcv.distribute_charges_based_on = "Amount"
+	lcv.distribute_charges_based_on = args.distribute_charges_based_on or "Amount"
 
 	lcv.set(
 		"purchase_receipts",
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
index af0d148325..53e8053616 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -1121,13 +1121,25 @@ def get_item_account_wise_additional_cost(purchase_document):
 						account.expense_account, {"amount": 0.0, "base_amount": 0.0}
 					)
 
-					item_account_wise_cost[(item.item_code, item.purchase_receipt_item)][account.expense_account][
-						"amount"
-					] += (account.amount * item.get(based_on_field) / total_item_cost)
+					if total_item_cost > 0:
+						item_account_wise_cost[(item.item_code, item.purchase_receipt_item)][
+							account.expense_account
+						]["amount"] += (
+							account.amount * item.get(based_on_field) / total_item_cost
+						)
 
-					item_account_wise_cost[(item.item_code, item.purchase_receipt_item)][account.expense_account][
-						"base_amount"
-					] += (account.base_amount * item.get(based_on_field) / total_item_cost)
+						item_account_wise_cost[(item.item_code, item.purchase_receipt_item)][
+							account.expense_account
+						]["base_amount"] += (
+							account.base_amount * item.get(based_on_field) / total_item_cost
+						)
+					else:
+						item_account_wise_cost[(item.item_code, item.purchase_receipt_item)][
+							account.expense_account
+						]["amount"] += item.applicable_charges
+						item_account_wise_cost[(item.item_code, item.purchase_receipt_item)][
+							account.expense_account
+						]["base_amount"] += item.applicable_charges
 
 	return item_account_wise_cost