feat(FE): Validate quantity against available stock

src/components/pages/inventory/adjustment/form/InventoryAdjustmentForm.tsx

@@ -46,6 +46,7 @@ import {
   TRANSACTION_SUBTYPE_OPTIONS,
 } from '@/config/constant';
 import NumberInput from '@/components/input/NumberInput';
+import { formatNumber } from '@/lib/helper';
 
 interface InventoryAdjustmentFormProps {
   type?: 'add' | 'detail';
@@ -62,6 +63,7 @@ const InventoryAdjustmentForm = ({
     setInventoryAdjustmentFormErrorMessage,
   ] = useState('');
   const [quantityLabel, setQuantityLabel] = useState('Kuantitas');
+  const [quantityError, setQuantityError] = useState<string>('');
 
   const [selectedLocation, setSelectedLocation] = useState<OptionType | null>(
     null
@@ -211,6 +213,25 @@ const InventoryAdjustmentForm = ({
       : [];
   }, [productWarehouses]);
 
+  // Get available quantity from selected product
+  const selectedProductQuantity = useMemo(() => {
+    if (!selectedProduct) return 0;
+    const product = productOptions.find(
+      (opt) => opt.value === selectedProduct.value
+    );
+    return product?.quantity ?? 0;
+  }, [selectedProduct, productOptions]);
+
+  // Check if current transaction subtype reduces stock
+  const isStockOutSubtype = useMemo(() => {
+    const subtype = selectedTransactionSubtype?.value;
+    return (
+      subtype === 'RECORDING_STOCK_OUT' ||
+      subtype === 'RECORDING_DEPLETION_OUT' ||
+      subtype === 'MARKETING_OUT'
+    );
+  }, [selectedTransactionSubtype]);
+
   const selectedProductFlags = useMemo(() => {
     if (!selectedProduct) return [];
     const product = productOptions.find(
@@ -372,6 +393,28 @@ const InventoryAdjustmentForm = ({
     }
   }, [selectedTransactionSubtype]);
 
+  // Validate quantity against available stock
+  useEffect(() => {
+    const qty = Number(formik.values.qty);
+    if (
+      isStockOutSubtype &&
+      selectedProduct &&
+      qty > 0 &&
+      qty > selectedProductQuantity
+    ) {
+      setQuantityError(
+        `Kuantitas ${formatNumber(qty)} melebihi stok tersedia (${formatNumber(selectedProductQuantity)})`
+      );
+    } else {
+      setQuantityError('');
+    }
+  }, [
+    formik.values.qty,
+    isStockOutSubtype,
+    selectedProduct,
+    selectedProductQuantity,
+  ]);
+
   useEffect(() => {
     if (selectedTransactionType?.value === 'RECORDING' && selectedProduct) {
       setSelectedTransactionSubtype(null);
@@ -804,11 +847,18 @@ const InventoryAdjustmentForm = ({
               value={formik.values.qty}
               onChange={formik.handleChange}
               onBlur={formik.handleBlur}
-              isError={formik.touched.qty && Boolean(formik.errors.qty)}
+              isError={
-              errorMessage={formik.errors.qty as string}
+                (formik.touched.qty && Boolean(formik.errors.qty)) ||
+                Boolean(quantityError)
+              }
+              errorMessage={(formik.errors.qty as string) || quantityError}
               readOnly={type === 'detail'}
+              bottomLabel={
+                selectedProduct
+                  ? `Kuantitas: ${formatNumber(selectedProductQuantity)}`
+                  : undefined
+              }
             />
-
             {/* Number Input Price */}
             <NumberInput
               required
@@ -856,7 +906,7 @@ const InventoryAdjustmentForm = ({
                   type='submit'
                   color='primary'
                   isLoading={formik.isSubmitting}
-                  disabled={formik.isSubmitting}
+                  disabled={formik.isSubmitting || Boolean(quantityError)}
                   className='px-4 w-full sm:w-auto'
                 >
                   Submit