Merge pull request #59156 from frappe/mergify/bp/version-15-hotfix/pr-59081

fix(accounts): validate bank reconciliation date ranges (backport #59081)

erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.js

@@ -68,6 +68,7 @@ frappe.ui.form.on("Bank Reconciliation Tool", {
 				frappe.msgprint(__("Please select Bank Account"));
 				return;
 			}
+			frm.events.validate_dates(frm);
 			frappe.call({
 				method: "erpnext.accounts.doctype.bank_reconciliation_tool.bank_reconciliation_tool.auto_reconcile_vouchers",
 				args: {
@@ -82,7 +83,7 @@ frappe.ui.form.on("Bank Reconciliation Tool", {
 		});
 
 		frm.add_custom_button(__("Get Unreconciled Entries"), function () {
-			frm.trigger("make_reconciliation_tool");
+			return frm.trigger("make_reconciliation_tool");
 		});
 		frm.change_custom_button_type(__("Get Unreconciled Entries"), null, "primary");
 	},
@@ -101,7 +102,24 @@ frappe.ui.form.on("Bank Reconciliation Tool", {
 		frm.trigger("get_account_opening_balance");
 	},
 
+	validate_dates(frm) {
+		const from_date = frm.doc.filter_by_reference_date
+			? frm.doc.from_reference_date
+			: frm.doc.bank_statement_from_date;
+		const to_date = frm.doc.filter_by_reference_date
+			? frm.doc.to_reference_date
+			: frm.doc.bank_statement_to_date;
+		if (from_date && to_date && from_date > to_date) {
+			frappe.throw(
+				frm.doc.filter_by_reference_date
+					? __("From Reference Date cannot be greater than To Reference Date")
+					: __("From Date cannot be greater than To Date")
+			);
+		}
+	},
+
 	make_reconciliation_tool(frm) {
+		frm.events.validate_dates(frm);
 		frm.get_field("reconciliation_tool_cards").$wrapper.empty();
 		if (frm.doc.company && frm.doc.bank_account && frm.doc.bank_statement_to_date) {
 			frm.trigger("get_cleared_balance").then(() => {

erpnext/accounts/doctype/bank_reconciliation_tool/bank_reconciliation_tool.py

@@ -3,13 +3,14 @@
 
 
 import json
+from datetime import date
 
 import frappe
 from frappe import _
 from frappe.model.document import Document
 from frappe.query_builder.custom import ConstantColumn
 from frappe.query_builder.functions import Sum
-from frappe.utils import cint, create_batch, flt
+from frappe.utils import cint, create_batch, flt, getdate
 
 from erpnext import get_default_cost_center
 from erpnext.accounts.doctype.bank_transaction.bank_transaction import get_total_allocated_amount
@@ -47,8 +48,12 @@ class BankReconciliationTool(Document):
 
 
 @frappe.whitelist()
-def get_bank_transactions(bank_account, from_date=None, to_date=None):
+def get_bank_transactions(
+	bank_account: str, from_date: str | date | None = None, to_date: str | date | None = None
+):
 	# returns bank transactions for a bank account
+	validate_date_range(from_date, to_date)
+
 	filters = []
 	filters.append(["bank_account", "=", bank_account])
 	filters.append(["docstatus", "=", 1])
@@ -372,13 +377,14 @@ def create_payment_entry_bts(
 
 @frappe.whitelist()
 def auto_reconcile_vouchers(
-	bank_account,
-	from_date=None,
-	to_date=None,
-	filter_by_reference_date=None,
-	from_reference_date=None,
-	to_reference_date=None,
+	bank_account: str,
+	from_date: str | date | None = None,
+	to_date: str | date | None = None,
+	filter_by_reference_date: bool | None = None,
+	from_reference_date: str | date | None = None,
+	to_reference_date: str | date | None = None,
 ):
+	validate_date_range(from_date, to_date, filter_by_reference_date, from_reference_date, to_reference_date)
 	bank_transactions = get_bank_transactions(bank_account)
 
 	if len(bank_transactions) > 10:
@@ -488,15 +494,16 @@ def reconcile_vouchers(bank_transaction_name, vouchers):
 
 @frappe.whitelist()
 def get_linked_payments(
-	bank_transaction_name,
-	document_types=None,
-	from_date=None,
-	to_date=None,
-	filter_by_reference_date=None,
-	from_reference_date=None,
-	to_reference_date=None,
+	bank_transaction_name: str,
+	document_types: str | list[str] | None = None,
+	from_date: str | date | None = None,
+	to_date: str | date | None = None,
+	filter_by_reference_date: bool | None = None,
+	from_reference_date: str | date | None = None,
+	to_reference_date: str | date | None = None,
 ):
 	# get all matching payments for a bank transaction
+	validate_date_range(from_date, to_date, filter_by_reference_date, from_reference_date, to_reference_date)
 	transaction = frappe.get_doc("Bank Transaction", bank_transaction_name)
 	bank_account = frappe.db.get_values(
 		"Bank Account", transaction.bank_account, ["account", "company"], as_dict=True
@@ -516,6 +523,23 @@ def get_linked_payments(
 	return subtract_allocations(gl_account, matching)
 
 
+def validate_date_range(
+	from_date,
+	to_date,
+	filter_by_reference_date=False,
+	from_reference_date=None,
+	to_reference_date=None,
+):
+	if cint(filter_by_reference_date):
+		from_date, to_date = from_reference_date, to_reference_date
+		message = _("From Reference Date cannot be greater than To Reference Date")
+	else:
+		message = _("From Date cannot be greater than To Date")
+
+	if from_date and to_date and getdate(from_date) > getdate(to_date):
+		frappe.throw(message)
+
+
 def subtract_allocations(gl_account, vouchers):
 	"Look up & subtract any existing Bank Transaction allocations"
 	copied = []

erpnext/accounts/doctype/bank_reconciliation_tool/test_bank_reconciliation_tool.py

@@ -10,6 +10,7 @@ from frappe.utils import add_days, today
 from erpnext.accounts.doctype.bank_reconciliation_tool.bank_reconciliation_tool import (
 	auto_reconcile_vouchers,
 	get_bank_transactions,
+	get_linked_payments,
 )
 from erpnext.accounts.doctype.payment_entry.test_payment_entry import create_payment_entry
 from erpnext.accounts.test.accounts_mixin import AccountsTestMixin
@@ -98,3 +99,42 @@ class TestBankReconciliationTool(AccountsTestMixin, FrappeTestCase):
 		# assert API output post reconciliation
 		transactions = get_bank_transactions(self.bank_account, from_date, to_date)
 		self.assertEqual(len(transactions), 0)
+
+	def test_rejects_reversed_date_ranges(self):
+		from_date, to_date = today(), add_days(today(), -1)
+		with self.assertRaisesRegex(frappe.ValidationError, "From Date cannot be greater than To Date"):
+			get_bank_transactions(self.bank_account, from_date, to_date)
+
+		with self.assertRaisesRegex(
+			frappe.ValidationError, "From Reference Date cannot be greater than To Reference Date"
+		):
+			auto_reconcile_vouchers(
+				self.bank_account,
+				filter_by_reference_date=True,
+				from_reference_date=from_date,
+				to_reference_date=to_date,
+			)
+
+		transaction = (
+			frappe.get_doc(
+				{
+					"doctype": "Bank Transaction",
+					"date": today(),
+					"deposit": 100,
+					"bank_account": self.bank_account,
+					"currency": "INR",
+				}
+			)
+			.insert()
+			.submit()
+		)
+		with self.assertRaisesRegex(
+			frappe.ValidationError, "From Reference Date cannot be greater than To Reference Date"
+		):
+			get_linked_payments(
+				transaction.name,
+				["payment_entry"],
+				filter_by_reference_date=True,
+				from_reference_date=from_date,
+				to_reference_date=to_date,
+			)