INFRA: Set Up Project.

lib/controllers/order_details_controller.dart

@@ -0,0 +1,77 @@
+import 'package:customer/constant/constant.dart';
+import 'package:customer/models/cart_product_model.dart';
+import 'package:customer/models/order_model.dart';
+import 'package:get/get.dart';
+
+import '../service/cart_provider.dart';
+
+class OrderDetailsController extends GetxController {
+  RxBool isLoading = true.obs;
+
+  @override
+  void onInit() {
+    // TODO: implement onInit
+    getArgument();
+    super.onInit();
+  }
+
+  Rx<OrderModel> orderModel = OrderModel().obs;
+
+  Future<void> getArgument() async {
+    dynamic argumentData = Get.arguments;
+    if (argumentData != null) {
+      orderModel.value = argumentData['orderModel'];
+    }
+    calculatePrice();
+    update();
+  }
+
+  RxDouble subTotal = 0.0.obs;
+  RxDouble specialDiscountAmount = 0.0.obs;
+  RxDouble taxAmount = 0.0.obs;
+  RxDouble totalAmount = 0.0.obs;
+
+  Future<void> calculatePrice() async {
+    subTotal.value = 0.0;
+    specialDiscountAmount.value = 0.0;
+    taxAmount.value = 0.0;
+    totalAmount.value = 0.0;
+
+    for (var element in orderModel.value.products!) {
+      if (double.parse(element.discountPrice.toString()) <= 0) {
+        subTotal.value = subTotal.value +
+            double.parse(element.price.toString()) * double.parse(element.quantity.toString()) +
+            (double.parse(element.extrasPrice.toString()) * double.parse(element.quantity.toString()));
+      } else {
+        subTotal.value = subTotal.value +
+            double.parse(element.discountPrice.toString()) * double.parse(element.quantity.toString()) +
+            (double.parse(element.extrasPrice.toString()) * double.parse(element.quantity.toString()));
+      }
+    }
+
+    if (orderModel.value.specialDiscount != null && orderModel.value.specialDiscount!['special_discount'] != null) {
+      specialDiscountAmount.value = double.parse(orderModel.value.specialDiscount!['special_discount'].toString());
+    }
+
+    if (orderModel.value.taxSetting != null) {
+      for (var element in orderModel.value.taxSetting!) {
+        taxAmount.value = taxAmount.value +
+            Constant.calculateTax(amount: (subTotal.value - double.parse(orderModel.value.discount.toString()) - specialDiscountAmount.value).toString(), taxModel: element);
+      }
+    }
+
+    totalAmount.value = (subTotal.value - double.parse(orderModel.value.discount.toString()) - specialDiscountAmount.value) +
+        taxAmount.value +
+        double.parse(orderModel.value.deliveryCharge.toString()) +
+        double.parse(orderModel.value.tipAmount.toString());
+
+    isLoading.value = false;
+  }
+
+  final CartProvider cartProvider = CartProvider();
+
+  void addToCart({required CartProductModel cartProductModel}) {
+    cartProvider.addToCart(Get.context!, cartProductModel, cartProductModel.quantity!);
+    update();
+  }
+}