refactoring: account form.

refactoring: expense form.
refactoring: manual journal form.
refactoring: invoice form.

client/src/containers/Entries/utils.js

@@ -0,0 +1,26 @@
+import { toSafeNumber } from 'utils';
+
+/**
+ * Retrieve item entry total from the given rate, quantity and discount.
+ * @param {number} rate 
+ * @param {number} quantity 
+ * @param {number} discount 
+ * @return {number}
+ */
+export const calcItemEntryTotal = (discount, quantity, rate) => {
+  const _quantity = toSafeNumber(quantity);
+  const _rate = toSafeNumber(rate);
+  const _discount = toSafeNumber(discount);
+
+  return _quantity * _rate - (_quantity * _rate * _discount) / 100;
+};
+
+/**
+ * Updates the items entries total.
+ */
+export function updateItemsEntriesTotal(rows) {
+  return rows.map((row) => ({
+    ...row,
+    total: calcItemEntryTotal(row.discount, row.quantity, row.rate)
+  }));
+};