feat: asset salvage_value_percentage (backport #37302) (#37334)

* feat: asset salvage_value_percentage (#37302)

* feat: asset salvage_value_percentage

* chore: add missing parameter in get_item_details

* chore: change asset depr table colors

(cherry picked from commit fed94845ce)

# Conflicts:
#	erpnext/assets/doctype/asset/asset.js
#	erpnext/assets/doctype/asset_activity/asset_activity.json
#	erpnext/assets/doctype/asset_finance_book/asset_finance_book.json

* chore: resolving conflicts

---------

Co-authored-by: Anand Baburajan <anandbaburajan@gmail.com>

erpnext/assets/doctype/asset/asset.js

@@ -287,7 +287,8 @@ frappe.ui.form.on('Asset', {
 			method: "erpnext.assets.doctype.asset.asset.get_item_details",
 			args: {
 				item_code: frm.doc.item_code,
-				asset_category: frm.doc.asset_category
+				asset_category: frm.doc.asset_category,
+				gross_purchase_amount: frm.doc.gross_purchase_amount
 			},
 			callback: function(r, rt) {
 				if(r.message) {
@@ -504,7 +505,21 @@ frappe.ui.form.on('Asset', {
 				}
 			});
 		}
-	}
+	},
+
+	set_salvage_value_percentage_or_expected_value_after_useful_life: function(frm, row, salvage_value_percentage_changed, expected_value_after_useful_life_changed) {
+		if (expected_value_after_useful_life_changed) {
+			frappe.flags.from_set_salvage_value_percentage_or_expected_value_after_useful_life = true;
+			const new_salvage_value_percentage = flt((row.expected_value_after_useful_life * 100) / frm.doc.gross_purchase_amount, precision("salvage_value_percentage", row));
+			frappe.model.set_value(row.doctype, row.name, "salvage_value_percentage", new_salvage_value_percentage);
+			frappe.flags.from_set_salvage_value_percentage_or_expected_value_after_useful_life = false;
+		} else if (salvage_value_percentage_changed) {
+			frappe.flags.from_set_salvage_value_percentage_or_expected_value_after_useful_life = true;
+			const new_expected_value_after_useful_life = flt(frm.doc.gross_purchase_amount * (row.salvage_value_percentage / 100), precision('gross_purchase_amount'));
+			frappe.model.set_value(row.doctype, row.name, "expected_value_after_useful_life", new_expected_value_after_useful_life);
+			frappe.flags.from_set_salvage_value_percentage_or_expected_value_after_useful_life = false;
+		}
+	},
 });
 
 frappe.ui.form.on('Asset Finance Book', {
@@ -516,9 +531,19 @@ frappe.ui.form.on('Asset Finance Book', {
 
 	expected_value_after_useful_life: function(frm, cdt, cdn) {
 		const row = locals[cdt][cdn];
+		if (!frappe.flags.from_set_salvage_value_percentage_or_expected_value_after_useful_life) {
+			frm.events.set_salvage_value_percentage_or_expected_value_after_useful_life(frm, row, false, true);
+		}
 		frm.events.set_depreciation_rate(frm, row);
 	},
 
+	salvage_value_percentage: function(frm, cdt, cdn) {
+		const row = locals[cdt][cdn];
+		if (!frappe.flags.from_set_salvage_value_percentage_or_expected_value_after_useful_life) {
+			frm.events.set_salvage_value_percentage_or_expected_value_after_useful_life(frm, row, true, false);
+		}
+	},
+
 	frequency_of_depreciation: function(frm, cdt, cdn) {
 		const row = locals[cdt][cdn];
 		frm.events.set_depreciation_rate(frm, row);

erpnext/assets/doctype/asset/asset.py

@@ -204,7 +204,9 @@ class Asset(AccountsController):
 			self.asset_category = frappe.get_cached_value("Item", self.item_code, "asset_category")
 
 		if self.item_code and not self.get("finance_books"):
-			finance_books = get_item_details(self.item_code, self.asset_category)
+			finance_books = get_item_details(
+				self.item_code, self.asset_category, self.gross_purchase_amount
+			)
 			self.set("finance_books", finance_books)
 
 	def validate_finance_books(self):
@@ -1195,7 +1197,7 @@ def transfer_asset(args):
 
 
 @frappe.whitelist()
-def get_item_details(item_code, asset_category):
+def get_item_details(item_code, asset_category, gross_purchase_amount):
 	asset_category_doc = frappe.get_doc("Asset Category", asset_category)
 	books = []
 	for d in asset_category_doc.finance_books:
@@ -1205,7 +1207,11 @@ def get_item_details(item_code, asset_category):
 				"depreciation_method": d.depreciation_method,
 				"total_number_of_depreciations": d.total_number_of_depreciations,
 				"frequency_of_depreciation": d.frequency_of_depreciation,
-				"start_date": nowdate(),
+				"daily_depreciation": d.daily_depreciation,
+				"salvage_value_percentage": d.salvage_value_percentage,
+				"expected_value_after_useful_life": flt(gross_purchase_amount)
+				* flt(d.salvage_value_percentage / 100),
+				"depreciation_start_date": d.depreciation_start_date or nowdate(),
 			}
 		)
 

erpnext/assets/doctype/asset_finance_book/asset_finance_book.json

@@ -12,6 +12,7 @@
   "column_break_5",
   "frequency_of_depreciation",
   "depreciation_start_date",
+  "salvage_value_percentage",
   "expected_value_after_useful_life",
   "value_after_depreciation",
   "rate_of_depreciation"
@@ -87,12 +88,17 @@
    "fieldname": "daily_depreciation",
    "fieldtype": "Check",
    "label": "Daily Depreciation"
+  },
+  {
+   "fieldname": "salvage_value_percentage",
+   "fieldtype": "Percent",
+   "label": "Salvage Value Percentage"
   }
  ],
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2023-08-10 18:56:09.022246",
+ "modified": "2023-09-29 15:39:52.740594",
  "modified_by": "Administrator",
  "module": "Assets",
  "name": "Asset Finance Book",