From cf7579e29f1bbf58eb13562016188f0552d64c93 Mon Sep 17 00:00:00 2001
From: GangaManoj <ganga.manoj98@gmail.com>
Date: Tue, 6 Jul 2021 00:36:06 +0530
Subject: [PATCH] feat: Create GL Entries for discount accounting

---
 .../doctype/sales_invoice/sales_invoice.py    | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
index 55a5b99907..15e7951359 100644
--- a/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
+++ b/erpnext/accounts/doctype/sales_invoice/sales_invoice.py
@@ -845,6 +845,7 @@ class SalesInvoice(SellingController):
 		self.allocate_advance_taxes(gl_entries)
 
 		self.make_item_gl_entries(gl_entries)
+		self.make_discount_gl_entries(gl_entries)
 
 		# merge gl entries before adding pos entries
 		gl_entries = merge_similar_entries(gl_entries)
@@ -958,6 +959,40 @@ class SalesInvoice(SellingController):
 			erpnext.is_perpetual_inventory_enabled(self.company):
 			gl_entries += super(SalesInvoice, self).get_gl_entries()
 
+	def make_discount_gl_entries(self, gl_entries):
+		enable_discount_accounting = cint(frappe.db.get_single_value('Accounts Settings', 'enable_discount_accounting'))
+
+		if enable_discount_accounting:
+			for item in self.get("items"):
+				if item.get('discount_amount') and item.get('discount_account'):
+					account_currency = get_account_currency(item.discount_account)
+					gl_entries.append(
+						self.get_gl_dict({
+							"account": item.discount_account,
+							"against": self.customer,
+							"debit": flt(item.discount_amount),
+							"debit_in_account_currency": flt(item.discount_amount),
+							"cost_center": self.cost_center,
+							"project": self.project
+						}, account_currency, item=self)
+					)
+
+					income_account = (item.income_account
+						if (not item.enable_deferred_revenue or self.is_return) 
+						else item.deferred_revenue_account)
+
+					account_currency = get_account_currency(income_account)
+					gl_entries.append(
+						self.get_gl_dict({
+							"account": income_account,
+							"against": self.customer,
+							"credit": flt(item.discount_amount),
+							"credit_in_account_currency": flt(item.discount_amount),
+							"cost_center": item.cost_center,
+							"project": item.project or self.project
+						}, account_currency, item=item)
+					)
+
 	def make_loyalty_point_redemption_gle(self, gl_entries):
 		if cint(self.redeem_loyalty_points):
 			gl_entries.append(