feat: add discount fields in sale and purchase forms

packages/webapp/src/containers/Purchases/Bills/BillForm/BillFormFooterRight.tsx

@@ -5,10 +5,14 @@ import {
   TotalLine,
   TotalLineBorderStyle,
   TotalLineTextStyle,
+  FFormGroup,
+  FInputGroup,
+  FSelect,
 } from '@/components';
 import { useBillAggregatedTaxRates, useBillTotals } from './utils';
 import { useFormikContext } from 'formik';
 import { TaxType } from '@/interfaces/TaxRates';
+import { Button } from '@blueprintjs/core';
 
 export function BillFormFooterRight() {
   const {
@@ -37,6 +41,34 @@ export function BillFormFooterRight() {
         value={formattedSubtotal}
         borderStyle={TotalLineBorderStyle.None}
       />
+
+      {/* ----------- Discount ----------- */}
+      <FFormGroup name={'discount'} label={'Discount'} inline>
+        <FInputGroup
+          name={'discount'}
+          rightElement={
+            <FSelect
+              name={'discount_type'}
+              items={[
+                { text: 'USD', value: 'amount' },
+                { text: '%', value: 'percentage' },
+              ]}
+              input={({ text }) => (
+                <Button small minimal>
+                  {text}
+                </Button>
+              )}
+              filterable={false}
+            />
+          }
+        />
+      </FFormGroup>
+
+      {/* ----------- Adjustment ----------- */}
+      <FFormGroup name={'adjustment'} label={'Adjustment'} inline>
+        <FInputGroup name={'adjustment'} />
+      </FFormGroup>
+
       {taxEntries.map((tax, index) => (
         <TotalLine
           key={index}

packages/webapp/src/containers/Purchases/Bills/BillForm/utils.tsx

@@ -13,6 +13,7 @@ import {
   repeatValue,
   orderingLinesIndexes,
   formattedAmount,
+  toSafeNumber,
 } from '@/utils';
 import {
   updateItemsEntriesTotal,
@@ -364,7 +365,27 @@ export const useBillSubtotal = () => {
 };
 
 /**
- * Retreives the bill total tax amount.
+ * Retrieves the bill discount amount.
+ * @returns {number}
+ */
+export const useBillDiscountAmount = () => {
+  const { values } = useFormikContext();
+
+  return toSafeNumber(values.discount);
+};
+
+/**
+ * Retrieves the bill adjustment amount.
+ * @returns {number}
+ */
+export const useBillAdjustmentAmount = () => {
+  const { values } = useFormikContext();
+
+  return toSafeNumber(values.adjustment);
+};
+
+/**
+ * Retrieves the bill total tax amount.
  * @returns {number}
  */
 export const useBillTotalTaxAmount = () => {
@@ -389,15 +410,19 @@ export const useIsBillTaxExclusive = () => {
 };
 
 /**
- * Retreives the bill total.
+ * Retrieves the bill total.
  * @returns {number}
  */
 export const useBillTotal = () => {
   const subtotal = useBillSubtotal();
   const totalTaxAmount = useBillTotalTaxAmount();
   const isExclusiveTax = useIsBillTaxExclusive();
+  const discountAmount = useBillDiscountAmount();
+  const adjustmentAmount = useBillAdjustmentAmount();
 
-  return R.compose(R.when(R.always(isExclusiveTax), R.add(totalTaxAmount)))(
-    subtotal,
-  );
+  return R.compose(
+    R.when(R.always(isExclusiveTax), R.add(totalTaxAmount)),
+    R.subtract(R.__, discountAmount),
+    R.subtract(R.__, adjustmentAmount),
+  )(subtotal);
 };