Track inventory

lib/data/models/product_model.dart

@@ -65,6 +65,8 @@ class ProductFields {
   static const String taxName2 = 'tax_name2';
   static const String taxRate3 = 'tax_rate3';
   static const String taxName3 = 'tax_name3';
+  static const String stockQuantity = 'stock_quantity';
+  static const String notificationThreshold = 'notification_threshold';
 }
 
 abstract class ProductEntity extends Object

lib/ui/app/presenters/entity_presenter.dart

@@ -149,6 +149,8 @@ class EntityPresenter {
       'age_group_60',
       'age_group_90',
       'age_group_120',
+      'stock_quantity',
+      'notification_threshold',
     ].contains(field);
 
     return value;

lib/ui/product/product_presenter.dart

@@ -34,6 +34,8 @@ class ProductPresenter extends EntityPresenter {
       ProductFields.taxName1,
       ProductFields.taxName2,
       ProductFields.taxName3,
+      ProductFields.stockQuantity,
+      ProductFields.notificationThreshold,
     ];
   }
 
@@ -91,6 +93,13 @@ class ProductPresenter extends EntityPresenter {
       case ProductFields.taxRate3:
         return Text(formatNumber(product.taxRate3, context,
             formatNumberType: FormatNumberType.percent));
+      case ProductFields.stockQuantity:
+        return Text(formatNumber(product.stockQuantity.toDouble(), context,
+            formatNumberType: FormatNumberType.int));
+      case ProductFields.notificationThreshold:
+        return Text(formatNumber(
+            product.stockNotificationThreshold.toDouble(), context,
+            formatNumberType: FormatNumberType.int));
     }
 
     return super.getField(field: field, context: context);

lib/ui/product/view/product_view_overview.dart

@@ -82,6 +82,18 @@ class _ProductOverviewState extends State<ProductOverview> {
           value: product.customValue4);
     }
 
+    if (company.trackInventory) {
+      fields[localization.stockQuantity] = formatNumber(
+          product.stockQuantity.toDouble(), context,
+          formatNumberType: FormatNumberType.int);
+
+      if (product.stockNotificationThreshold != 0) {
+        fields[localization.notificationThreshold] = formatNumber(
+            product.stockNotificationThreshold.toDouble(), context,
+            formatNumberType: FormatNumberType.int);
+      }
+    }
+
     return ScrollableListView(
       children: <Widget>[
         EntityHeader(

lib/ui/reports/product_report.dart

@@ -26,6 +26,8 @@ enum ProductReportFields {
   product2,
   product3,
   product4,
+  stock_quantity,
+  notification_threshold
 }
 
 var memoizedProductReport = memo6((
@@ -142,6 +144,12 @@ ReportResult productReport(
             company: userCompany.company,
           );
           break;
+        case ProductReportFields.stock_quantity:
+          value = product.stockQuantity;
+          break;
+        case ProductReportFields.notification_threshold:
+          value = product.stockNotificationThreshold;
+          break;
       }
 
       if (!ReportResult.matchField(