fix: round tax amounts frontend

round_tax_amount_row_wise/__init__.py

@@ -1 +1 @@
-__version__ = "0.1.3"
+__version__ = "0.1.4"

round_tax_amount_row_wise/hooks.py

@@ -10,7 +10,7 @@
 
 # include js, css files in header of desk.html
 # app_include_css = "/assets/round_tax_amount_row_wise/css/round_tax_amount_row_wise.css"
-# app_include_js = "/assets/round_tax_amount_row_wise/js/round_tax_amount_row_wise.js"
+app_include_js = "/assets/round_tax_amount_row_wise/js/taxes_and_totals_override.js"
 
 # include js, css files in header of web template
 # web_include_css = "/assets/round_tax_amount_row_wise/css/round_tax_amount_row_wise.css"

round_tax_amount_row_wise/public/js/taxes_and_totals_override.js

@@ -0,0 +1,69 @@
+frappe.provide("erpnext.taxes_and_totals");
+
+if (erpnext.taxes_and_totals) {
+
+    erpnext.taxes_and_totals.prototype.get_current_tax_amount = function (item, tax, item_tax_map) {
+		var tax_rate = this._get_tax_rate(tax, item_tax_map);
+		var current_tax_amount = 0.0;
+
+		// To set row_id by default as previous row.
+		if(["On Previous Row Amount", "On Previous Row Total"].includes(tax.charge_type)) {
+			if (tax.idx === 1) {
+				frappe.throw(
+					__("Cannot select charge type as 'On Previous Row Amount' or 'On Previous Row Total' for first row"));
+			}
+			if (!tax.row_id) {
+				tax.row_id = tax.idx - 1;
+			}
+		}
+		if(tax.charge_type == "Actual") {
+			// distribute the tax amount proportionally to each item row
+			var actual = flt(tax.tax_amount, precision("tax_amount", tax));
+			current_tax_amount = this.frm.doc.net_total ?
+				((item.net_amount / this.frm.doc.net_total) * actual) : 0.0;
+
+		} else if(tax.charge_type == "On Net Total") {
+			if (tax.included_in_print_rate){
+				var net_amount = item.amount / (1 + tax_rate / 100.0)
+				current_tax_amount = item.amount - net_amount
+			}else {
+				current_tax_amount = (tax_rate / 100.0) * item.net_amount;
+			}
+		} else if(tax.charge_type == "On Previous Row Amount") {
+			current_tax_amount = (tax_rate / 100.0) *
+				this.frm.doc["taxes"][cint(tax.row_id) - 1].tax_amount_for_current_item;
+
+		} else if(tax.charge_type == "On Previous Row Total") {
+			current_tax_amount = (tax_rate / 100.0) *
+				this.frm.doc["taxes"][cint(tax.row_id) - 1].grand_total_for_current_item;
+		} else if (tax.charge_type == "On Item Quantity") {
+			current_tax_amount = tax_rate * item.qty;
+		}
+
+		if (!tax.dont_recompute_tax) {
+			this.set_item_wise_tax(item, tax, tax_rate, current_tax_amount);
+		}
+		return flt(current_tax_amount, precision("tax_amount", tax))
+	};
+
+
+    erpnext.taxes_and_totals.prototype.set_item_wise_tax = function (item, tax, tax_rate, current_tax_amount) {
+        // store tax breakup for each item
+		let tax_detail = tax.item_wise_tax_detail;
+		let key = item.item_code || item.item_name;
+
+		if(typeof (tax_detail) == "string") {
+			tax.item_wise_tax_detail = JSON.parse(tax.item_wise_tax_detail);
+			tax_detail = tax.item_wise_tax_detail;
+		}
+
+		let _item_wise_tax_amount = current_tax_amount * this.frm.doc.conversion_rate;
+		let item_wise_tax_amount = flt(_item_wise_tax_amount, precision("tax_amount"), tax)
+		if (tax_detail && tax_detail[key])
+			item_wise_tax_amount += flt(
+				tax.item_wise_tax_detail[key][1], precision("tax_amount", tax)
+			)
+
+		tax_detail[key] = [tax_rate, flt(item_wise_tax_amount, precision("base_tax_amount", tax))];
+    };
+}