feat:add withholding tax and withholding VAT automation for invoices

csf_ke/csf_ke/company.js

@@ -0,0 +1,84 @@
+frappe.ui.form.on("Company", {
+	refresh: function(frm) {
+		toggle_withholding_fields(frm, "tax");
+		toggle_withholding_fields(frm, "vat");
+	},
+
+	withholding_tax_party_wise: function(frm) {
+		enforce_withholding_mode(frm, "tax", "party_wise");
+		toggle_withholding_fields(frm, "tax");
+	},
+
+	withholding_tax_no_party: function(frm) {
+		enforce_withholding_mode(frm, "tax", "no_party");
+		toggle_withholding_fields(frm, "tax");
+	},
+
+	withholding_vat_party_wise: function(frm) {
+		enforce_withholding_mode(frm, "vat", "party_wise");
+		toggle_withholding_fields(frm, "vat");
+	},
+
+	withholding_vat_no_party: function(frm) {
+		enforce_withholding_mode(frm, "vat", "no_party");
+		toggle_withholding_fields(frm, "vat");
+	},
+
+	validate: function(frm) {
+		validate_withholding_mode(frm, "tax");
+		validate_withholding_mode(frm, "vat");
+	},
+});
+
+function enforce_withholding_mode(frm, kind, selected_mode) {
+	const selected_fieldname = `withholding_${kind}_${selected_mode}`;
+	const other_mode = selected_mode === "party_wise" ? "no_party" : "party_wise";
+	const other_fieldname = `withholding_${kind}_${other_mode}`;
+
+	if (frm.doc[selected_fieldname]) {
+		frm.set_value(other_fieldname, 0);
+	}
+}
+
+function toggle_withholding_fields(frm, kind) {
+	const party_wise = Boolean(frm.doc[`withholding_${kind}_party_wise`]);
+	const no_party = Boolean(frm.doc[`withholding_${kind}_no_party`]);
+
+	[
+		`withholding_${kind}_party_wise_payable_account`,
+		`withholding_${kind}_party_wise_receivable_account`,
+	].forEach((fieldname) => {
+		frm.toggle_display(fieldname, party_wise);
+	});
+
+	[
+		`withholding_${kind}_no_party_payable_account`,
+		`withholding_${kind}_no_party_receivable_account`,
+	].forEach((fieldname) => {
+		frm.toggle_display(fieldname, no_party);
+	});
+}
+
+function validate_withholding_mode(frm, kind) {
+	const has_account = Boolean(
+		frm.doc[`withholding_${kind}_party_wise_payable_account`] ||
+		frm.doc[`withholding_${kind}_no_party_payable_account`] ||
+		frm.doc[`withholding_${kind}_party_wise_receivable_account`] ||
+		frm.doc[`withholding_${kind}_no_party_receivable_account`]
+	);
+
+	const party_wise = Boolean(frm.doc[`withholding_${kind}_party_wise`]);
+	const no_party = Boolean(frm.doc[`withholding_${kind}_no_party`]);
+
+	if (!has_account) {
+		return;
+	}
+
+	if ((party_wise && no_party) || (!party_wise && !no_party)) {
+		frappe.throw(
+			__("Please choose exactly one option for Withholding {0}: Party Wise or No Party.", [
+				kind.toUpperCase(),
+			])
+		);
+	}
+}