fix

lib/domain/constants.dart

@@ -69,6 +69,7 @@ const privilege_delivery = "deli";
 const privilege_invoice = "inv";
 const privilege_processing = "pr";
 const privilege_receiving = "rc";
+const privilege_pickup = "pku";
 
 // Pickup types
 const shipment_local_pickup = "Local pickup";

lib/domain/entities/carton.dart

@@ -64,9 +64,8 @@ class Carton {
   // String get packageNumber =>
   //     shipmentNumber + "-" + receiverNumber + " #" + boxNumber;
 
-  double get actualWeight => cargoTypes == null
-      ? 0
-      : cargoTypes.fold(0, (p, e) => e.weight  + p);
+  double get actualWeight =>
+      cargoTypes == null ? 0 : cargoTypes.fold(0, (p, e) => e.weight + p);
 
   int getShipmentWeight(double volumetricRatio) {
     if (length == null ||
@@ -110,13 +109,12 @@ class Carton {
     double wd = sw - aw;
     wd = wd - rate.diffDiscountWeight;
     double wdAmount = wd > 0 ? wd * rate.diffWeightRate : 0;
-
     DiscountByWeight discountByWeight = rate.getDiscountByWeight(aw);
 
     double total = 0;
     cargoTypes.forEach((e) {
-      double r = e.rate -
-          (discountByWeight != null ? (discountByWeight.discount) : 0);
+      double r =
+          e.rate - (discountByWeight != null ? (discountByWeight.discount) : 0);
       double amount = e.weight * r;
       total += amount;
     });
@@ -194,7 +192,8 @@ class Carton {
   }
 
   factory Carton.fromMap(Map<String, dynamic> map, String docID) {
-    var _arrivedDate = (map['arrived_date'] as Timestamp);
+    var _arrivedDate =
+        map['arrived_date'] == null ? null : (map['arrived_date'] as Timestamp);
     var da = map['delivery_address'];
     var _da = da != null ? DeliveryAddress.fromMap(da, da["id"]) : null;
     var cargoTypesMaps =

lib/domain/entities/rate.dart

@@ -16,10 +16,12 @@ class Rate {
 
   DiscountByWeight getDiscountByWeight(double weight) {
     discountByWeights.sort((d1, d2) => d2.weight.compareTo(d1.weight));
-    return discountByWeights.firstWhere((e) => e.weight < weight);
+    return discountByWeights.firstWhere((e) => e.weight < weight,
+        orElse: () => DiscountByWeight());
   }
 
-  CargoType get defaultCargoType => cargoTypes.firstWhere((e) => e.name == "General");
+  CargoType get defaultCargoType =>
+      cargoTypes.firstWhere((e) => e.name == "General");
 
   Rate(
       {this.deliveryFee = 0,

lib/domain/vo/privilege.dart

@@ -43,6 +43,8 @@ class Privilege {
       iconData = FontAwesome.dropbox;
     } else if (this.id == privilege_receiving) {
       iconData = MaterialCommunityIcons.inbox_arrow_down;
+    } else if (this.id == privilege_pickup) {
+      iconData = FontAwesome.dropbox;
     } else {
       iconData = MaterialCommunityIcons.account_question;
     }