Refactor discount calculation and response models for institution contracts

- Replace InstitutionContractExtensionPaymentResponse with InstitutionContractDiscountResponse in discount-related methods and endpoints
- Update request and response models to include OneMonthAmount, Obligation, and improved discount fields
- Adjust method signatures and controller actions to use new response types
- Refactor discount calculation logic to support new structure and ensure correct plan updates for both installment and one-time payments
- Improve naming consistency for discount percentage fields

CompanyManagment.App.Contracts/InstitutionContract/CreateInstitutionContractRequest.cs

@@ -87,7 +87,7 @@ public class CreateInstitutionContractRequest
     /// <summary>
     /// مبلغ کل قرارداد
     /// </summary>
-    public double TotalAmount { get; set; }
+    public double PaymentAmount { get; set; }
 
     /// <summary>
     /// آیا قرارداد اقساطی است؟

CompanyManagment.App.Contracts/InstitutionContract/IInstitutionContractApplication.cs

@@ -215,8 +215,8 @@ public interface IInstitutionContractApplication
     Task<OperationResult<OtpResultViewModel>> SendVerifyOtp(Guid id);
     Task<OperationResult<string>> VerifyOtpAndMakeGateway(Guid publicId, string code, string callbackUrl);
     Task<InstitutionContractWorkshopDetailViewModel> GetWorkshopInitialDetails(long workshopDetailsId);
-    InstitutionContractExtensionPaymentResponse CalculateDiscount(InstitutionContractSetDiscountRequest request);
-    InstitutionContractExtensionPaymentResponse ResetDiscountCreate(InstitutionContractResetDiscountForCreateRequest request);
+    InstitutionContractDiscountResponse CalculateDiscount(InstitutionContractSetDiscountRequest request);
+    InstitutionContractDiscountResponse ResetDiscountCreate(InstitutionContractResetDiscountForCreateRequest request);
     
     #region Extension
 
@@ -231,9 +231,10 @@ public interface IInstitutionContractApplication
     Task<InstitutionContractExtensionPaymentResponse> GetExtensionPaymentMethod(
         InstitutionContractExtensionPaymentRequest request);
     
-    Task<InstitutionContractExtensionPaymentResponse> SetDiscountForExtension(
-        InstitutionContractSetDiscountForExtensionRequest  request);
-    Task<ActionResult<InstitutionContractExtensionPaymentResponse>> ResetDiscountForExtension(InstitutionContractResetDiscountForExtensionRequest request);
+    Task<InstitutionContractDiscountResponse> SetDiscountForExtension(
+        InstitutionContractSetDiscountForExtensionRequest request);
+    Task<InstitutionContractDiscountResponse> ResetDiscountForExtension(
+        InstitutionContractResetDiscountForExtensionRequest request);
     
 
     Task<OperationResult> ExtensionComplete(InstitutionContractExtensionCompleteRequest request);
@@ -264,12 +265,48 @@ public interface IInstitutionContractApplication
 
 }
 
+public class InstitutionContractDiscountResponse
+{
+    public InstitutionContractDiscountOneTimeViewModel OneTime { get; set; }
+    public InstitutionContractDiscountMonthlyViewModel Monthly { get; set; }
+}
+
+public class InstitutionContractDiscountMonthlyViewModel:InstitutionContractDiscountOneTimeViewModel
+{
+    public List<MonthlyInstallment> Installments { get; set; }
+}
+
+public class InstitutionContractDiscountOneTimeViewModel
+{
+    /// <summary>
+    /// مجموع مبالغ
+    /// </summary>
+    public string TotalAmount { get; set; }
+    /// <summary>
+    /// ارزش افزوده
+    /// </summary>
+    public string Tax { get; set; }
+    /// <summary>
+    /// مبلغ قابل پرداخت
+    /// </summary>
+    public string PaymentAmount { get; set; }
+    
+    public string DiscountedAmount { get; set; }
+    
+    public int DiscountPercetage { get; set; }
+
+    public string Obligation { get; set; }
+    
+    public string OneMonthAmount { get; set; }
+}
+
 public class InstitutionContractResetDiscountForCreateRequest
 {
-    public int Percentage { get; set; }
+    public int DiscountPercentage { get; set; }
     public double TotalAmount { get; set; }
     public bool IsInstallment { get; set; }
     public InstitutionContractDuration Duration { get; set; }
+    public double OneMonthAmount { get; set; }
 }
 
 public class InstitutionContractSetDiscountForExtensionRequest
@@ -291,6 +328,7 @@ public class InstitutionContractSetDiscountRequest
     public int DiscountPercentage { get; set; }
     public double TotalAmount { get; set; }
     public InstitutionContractDuration Duration { get; set; }
+    public double OneMonthAmount { get; set; }
     public bool IsInstallment { get; set; }
 }