все модели сделаны

SeniorPomidorContracts/DataModels/CropDataModel.cs

@@ -35,14 +35,14 @@ public class CropDataModell(string id, string harvestId, string cropName, double
             throw new ValidationException("Field Id is empty");
 
         if (!Id.IsGuid())
-            throw new ValidationException("The value in the field Id is not a unique identifier"); 
-   
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+
         if (HarvestId.IsEmpty())
             throw new ValidationException("Field HarvestId is empty");
 
         if (!HarvestId.IsGuid())
-            throw new ValidationException("The value in the field HarvestId is not a unique identifier"); 
-   
+            throw new ValidationException("The value in the field HarvestId is not a unique identifier");
+
         if (CropName.IsEmpty())
             throw new ValidationException("Field CropName is empty");
 
@@ -50,6 +50,6 @@ public class CropDataModell(string id, string harvestId, string cropName, double
             throw new ValidationException("Field CropType is empty");
 
         if (Price <= 0)
-            throw new ValidationException("Field Price is less than or equal to 0"); 
+            throw new ValidationException("Field Price is less than or equal to 0");
     }
-}
+}

SeniorPomidorContracts/DataModels/CropHistoryDataModel.cs

@@ -1,31 +0,0 @@
-using SeniorPomidorContracts.Extensions;
-using SeniorPomidorContracts.Infrastructure;
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace SeniorPomidorContracts.DataModels;
-
-public class CropHistoryDataModell(string cropId, double oldPrice) : IValidation
-{
-    public string CropId { get; private set; } = cropId;
-
-    public double OldPrice { get; private set; } = oldPrice;
-
-    public DateTime ChangeDate { get; private set; } = DateTime.UtcNow;
-
-    public void Validate()
-    {
-        if (CropId.IsEmpty())
-            throw new ValidationException("Field CropId is empty");
-
-        if (!CropId.IsGuid())
-            throw new ValidationException("The value in the field CropId is not a unique identifier"); 
-   
-        if (OldPrice <= 0)
-            throw new ValidationException("Field OldPrice is less than or equal to 0"); 
-    }
-}

SeniorPomidorContracts/DataModels/HarvestDataModel.cs

@@ -28,9 +28,12 @@ public class HarvestDataModel(string id, string harvestName
             throw new ValidationException("Field Id is empty");
 
         if (Id.IsGuid())
-            throw new ValidationException("\"The value in the field Id is not a unique identifier");
+            throw new ValidationException("The value in the field Id is not a unique identifier");
 
         if (HarvestName.IsEmpty())
             throw new ValidationException("Field HarvestName is empty");
+
+        if (HarvestAmount < 0)
+            throw new ValidationException("Field HarvestAmount is less than 0");
     }
 }

SeniorPomidorContracts/DataModels/SupplyCropDataModel.cs

@@ -0,0 +1,37 @@
+using SeniorPomidorContracts.Extensions;
+using SeniorPomidorContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SeniorPomidorContracts.DataModels;
+
+public class SupplyCropDataModel(string supplyId, string cropId, int amount) : IValidation
+{
+    public string SupplyId { get; private set; } = supplyId;
+
+    public string CropId { get; private set; } = cropId;
+
+    public int Amount { get; private set; } = amount;
+
+    public void Validate()
+    {
+        if (SupplyId.IsEmpty())
+            throw new ValidationException("Field SupplyId is empty");
+
+        if (!SupplyId.IsGuid())
+            throw new ValidationException("The value in the field SupplyId is not a unique identifier");
+
+        if (CropId.IsEmpty())
+            throw new ValidationException("Field CropId is empty");
+
+        if (!CropId.IsGuid())
+            throw new ValidationException("The value in the field CropId is not a unique identifier");
+
+        if (Amount <= 0)
+            throw new ValidationException("Field Amount is less than or equal to 0");
+    }
+}

SeniorPomidorContracts/DataModels/SupplyDataModel.cs

@@ -0,0 +1,49 @@
+using SeniorPomidorContracts.Enums;
+using SeniorPomidorContracts.Extensions;
+using SeniorPomidorContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SeniorPomidorContracts.DataModels;
+
+public class SupplyDataModel(string id, string supplierId, int sum, DateTime supplyDate, 
+    bool isCancel, List<SupplyCropDataModel> crops, DiscountType discountType, double discount) : IValidation
+{
+    public string Id { get; private set; } = id;
+
+    public string? SupplierId { get; private set; } = supplierId;
+
+    public int Sum { get; private set; } = sum;
+
+    public DateTime SupplyDate { get; private set; } = supplyDate;
+
+    public List<SupplyCropDataModel> Crops { get; private set; } = crops;
+
+    public DiscountType DiscountType { get; private set; } = discountType;
+
+    public double Discount { get; private set; } = discount;
+
+    public bool IsCancel { get; private set; } = isCancel;
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+
+        if (!SupplierId?.IsGuid() ?? !SupplierId?.IsEmpty() ?? false)
+            throw new ValidationException("The value in the field SupplierId is not a unique identifier");
+
+        if (Sum <= 0)
+            throw new ValidationException("Field Sum is less than or equal to 0");
+
+        if ((Crops?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include products");
+    }
+}

SeniorPomidorContracts/DataModels/SupplyHistoryDataModel.cs

@@ -0,0 +1,28 @@
+using SeniorPomidorContracts.Extensions;
+using SeniorPomidorContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SeniorPomidorContracts.DataModels;
+
+public class SupplyHistoryDataModell(string id, string SupplyId) : IValidation
+{
+    public string Id { get; set; } = id;
+
+    public string SupplyId { get; private set; } = SupplyId;
+
+    public DateTime SupplyDate { get; private set; } = DateTime.UtcNow;
+
+    public void Validate()
+    {
+        if (SupplyId.IsEmpty())
+            throw new ValidationException("Field SupplyId is empty");
+
+        if (!SupplyId.IsGuid())
+            throw new ValidationException("The value in the field SupplyId is not a unique identifier"); 
+    }
+}

SeniorPomidorContracts/Enums/DiscountType.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SeniorPomidorContracts.Enums;
+[Flags]
+public enum DiscountType
+{
+    None = 0,
+    OnSale = 1,
+    RegularSupplier = 2,
+    Certificate = 4
+}