Add discount support for institution contract extensions

- Introduce DiscountPercentage and DiscountAmount fields to contract creation and payment models
- Implement discount calculation logic in repository
- Add SetDiscountForExtension API endpoint and related request/response models
- Update contract creation and extension flows to handle discounts

Company.Domain/InstitutionContractAgg/IInstitutionContractRepository.cs

@@ -56,6 +56,8 @@ public interface IInstitutionContractRepository : IRepository<long, InstitutionC
     void UpdateStatusIfNeeded(long institutionContractId);
     Task<GetInstitutionVerificationDetailsViewModel> GetVerificationDetails(Guid id);
     Task<InstitutionContract> GetByPublicIdAsync(Guid id);
+    InstitutionContractExtensionPaymentResponse CalculateDiscount(InstitutionContractSetDiscountRequest request);
+    
 
     #region Extension
 
@@ -63,9 +65,10 @@ public interface IInstitutionContractRepository : IRepository<long, InstitutionC
     Task<InstitutionContractExtensionWorkshopsResponse> GetExtensionWorkshops(InstitutionContractExtensionWorkshopsRequest request);
     Task<InstitutionContractExtensionPlanResponse> GetExtensionInstitutionPlan(InstitutionContractExtensionPlanRequest request);
     Task<InstitutionContractExtensionPaymentResponse> GetExtensionPaymentMethod(InstitutionContractExtensionPaymentRequest request);
+    Task<InstitutionContractExtensionPaymentResponse> SetDiscountForExtension(InstitutionContractSetDiscountForExtensionRequest request);
     Task<OperationResult> ExtensionComplete(InstitutionContractExtensionCompleteRequest request);
 
-        #endregion
+    #endregion
 
     #region Upgrade(Amendment)
 

Company.Domain/InstitutionContractAgg/InstitutionContract.cs

@@ -19,7 +19,7 @@ public class InstitutionContract : EntityBase
         string contractEndFa, double contractAmount, double dailyCompenseation, double obligation,
         double totalAmount, int extensionNo, string workshopManualCount, string employeeManualCount, string description,
         string officialCompany, string typeOfcontract, string hasValueAddedTax, double valueAddedTax,
-        List<InstitutionContractWorkshopInitial> workshopDetails, long lawId)
+        List<InstitutionContractWorkshopInitial> workshopDetails, long lawId,int discountPercentage, double discountAmount)
     {
         ContractNo = contractNo;
         RepresentativeId = representativeId;

Company.Domain/InstitutionContractExtensionTempAgg/InstitutionContractExtensionTemp.cs

@@ -65,6 +65,7 @@ public class InstitutionContractExtensionTemp
         MonthlyPayment = monthly;
         OneTimePayment = oneTime;
     }
+
     
 }
 

CompanyManagment.App.Contracts/InstitutionContract/CreateInstitutionContractRequest.cs

@@ -102,6 +102,10 @@ public class CreateInstitutionContractRequest
     public double OneMonthAmount { get; set; }
 
     public long LawId { get; set; }
+
+    public int DiscountPercentage { get; set; }
+    
+    public double DiscountAmount { get; set; }
 }
 /// <summary>
 /// مدت زمان قرارداد نهاد

CompanyManagment.App.Contracts/InstitutionContract/IInstitutionContractApplication.cs

@@ -228,6 +228,10 @@ public interface IInstitutionContractApplication
 
     Task<InstitutionContractExtensionPaymentResponse> GetExtensionPaymentMethod(
         InstitutionContractExtensionPaymentRequest request);
+    
+    Task<InstitutionContractExtensionPaymentResponse> SetDiscountForExtension(
+        InstitutionContractSetDiscountForExtensionRequest  request);
+    
 
     Task<OperationResult> ExtensionComplete(InstitutionContractExtensionCompleteRequest request);
     Task<List<InstitutionContractSelectListViewModel>> GetInstitutionContractSelectList(string search,string selected);
@@ -257,6 +261,22 @@ public interface IInstitutionContractApplication
     
 }
 
+public class InstitutionContractSetDiscountForExtensionRequest
+{
+    public Guid TempId { get; set; }
+    public int DiscountPercentage { get; set; }
+    public double PaymentAmount { get; set; }
+    public bool IsInstallment { get; set; }
+}
+
+public class InstitutionContractSetDiscountRequest
+{
+    public int DiscountPercentage { get; set; }
+    public double PaymentAmount { get; set; }
+    public InstitutionContractDuration Duration { get; set; }
+    public bool IsInstallment { get; set; }
+}
+
 public class InstitutionContractPrintViewModel
 {
     public InstitutionContratVerificationParty FirstParty { get; set; }

CompanyManagment.App.Contracts/InstitutionContract/InstitutionContractPaymentOneTimeViewModel.cs

@@ -17,6 +17,9 @@ public class InstitutionContractPaymentOneTimeViewModel
     /// مبلغ قابل پرداخت
     /// </summary>
     public string PaymentAmount { get; set; }
+
+    public string DiscountedAmount { get; set; }
+    public int DiscountPercetage { get; set; }
 }
 public class InstitutionContractPaymentMonthlyViewModel:InstitutionContractPaymentOneTimeViewModel
 {

CompanyManagment.Application/InstitutionContractApplication.cs

@@ -223,7 +223,7 @@ public class InstitutionContractApplication : IInstitutionContractApplication
 			command.ContractStartFa, contractEndGr, command.ContractEndFa, command.ContractAmount,
 			command.DailyCompenseation, command.Obligation,
 			command.TotalAmount, 0, command.WorkshopManualCount, command.EmployeeManualCount, command.Description,
-			command.OfficialCompany, command.TypeOfContract, command.HasValueAddedTax, command.ValueAddedTax, [], command.LawId);
+			command.OfficialCompany, command.TypeOfContract, command.HasValueAddedTax, command.ValueAddedTax, [], command.LawId,0,0);
 
 		_institutionContractRepository.Create(createContract);
 		_institutionContractRepository.SaveChanges();
@@ -332,7 +332,7 @@ public class InstitutionContractApplication : IInstitutionContractApplication
 			command.DailyCompenseation, command.Obligation,
 			command.TotalAmount, command.ExtensionNo, command.WorkshopManualCount, command.EmployeeManualCount,
 			command.Description, command.OfficialCompany, command.TypeOfContract, command.HasValueAddedTax,
-			command.ValueAddedTax, [], command.LawId);
+			command.ValueAddedTax, [], command.LawId,0,0);
 
 		_institutionContractRepository.Create(createContract);
 		_institutionContractRepository.SaveChanges();
@@ -1085,7 +1085,7 @@ public class InstitutionContractApplication : IInstitutionContractApplication
             command.Workshops.Count.ToString(),
             command.Workshops.Sum(x => x.PersonnelCount).ToString(), command.Description,
             "NotOfficial", "JobRelation", hasValueAddedTax,
-            command.TaxAmount, workshopDetails, command.LawId);
+            command.TaxAmount, workshopDetails, command.LawId,command.DiscountPercentage,command.DiscountAmount );
 
 
 		FinancialStatment financialStatement;
@@ -1446,6 +1446,12 @@ public class InstitutionContractApplication : IInstitutionContractApplication
         return await _institutionContractRepository.GetExtensionPaymentMethod(request);
     }
 
+    public async Task<InstitutionContractExtensionPaymentResponse> SetDiscountForExtension(
+        InstitutionContractSetDiscountForExtensionRequest request)
+    {
+        return await  _institutionContractRepository.SetDiscountForExtension(request);
+    }
+    
     public async Task<OperationResult> ExtensionComplete(InstitutionContractExtensionCompleteRequest request)
     {
         return await _institutionContractRepository.ExtensionComplete(request);

CompanyManagment.EFCore/Repository/InstitutionContractRepository.cs

@@ -1870,6 +1870,51 @@ public class InstitutionContractRepository : RepositoryBase<long, InstitutionCon
             .FirstOrDefaultAsync(x => x.PublicId == id);
     }
 
+    public InstitutionContractExtensionPaymentResponse CalculateDiscount(InstitutionContractSetDiscountRequest request)
+    {
+        var baseAmount = request.PaymentAmount;
+        var discountAmount = (baseAmount * request.DiscountPercentage) / 100;
+        var paymentAmount = baseAmount - discountAmount;
+        var taxAmount = paymentAmount * 0.10;
+        var totalAmount = paymentAmount + taxAmount;
+        InstitutionContractPaymentMonthlyViewModel monthlyPayment = null;
+        InstitutionContractPaymentOneTimeViewModel oneTimePayment = null;
+        
+        if (request.IsInstallment)
+        {
+            monthlyPayment = new InstitutionContractPaymentMonthlyViewModel()
+            {
+                TotalAmount = totalAmount.ToMoney(),
+                PaymentAmount = paymentAmount.ToMoney(),
+                Tax = taxAmount.ToMoney(),
+                DiscountedAmount = discountAmount.ToMoney(),
+                DiscountPercetage = request.DiscountPercentage,
+                Installments = InstitutionMonthlyInstallmentCaculation((int)request.Duration,
+                    totalAmount, DateTime.Now.ToFarsi())
+            };
+        }
+        else
+        {
+            oneTimePayment =  new InstitutionContractPaymentOneTimeViewModel()
+            {
+                TotalAmount = totalAmount.ToMoney(),
+                PaymentAmount = paymentAmount.ToMoney(),
+                Tax = taxAmount.ToMoney(),
+                DiscountedAmount = discountAmount.ToMoney(),
+                DiscountPercetage = request.DiscountPercentage
+            };
+        }
+        
+        if (discountAmount > baseAmount)
+            throw new BadRequestException("مقدار تخفیف نمی‌تواند بیشتر از مبلغ کل باشد");
+
+        return new InstitutionContractExtensionPaymentResponse()
+        {
+            Monthly = monthlyPayment,
+            OneTime = oneTimePayment
+        };
+    }
+
     #region Extension
 
     public async Task<InstitutionContractExtensionInquiryResult> GetExtensionInquiry(long previousContractId)
@@ -2177,6 +2222,58 @@ public class InstitutionContractRepository : RepositoryBase<long, InstitutionCon
         return res;
     }
 
+    public async Task<InstitutionContractExtensionPaymentResponse> SetDiscountForExtension(InstitutionContractSetDiscountForExtensionRequest request)
+    {
+        
+        if (request.DiscountPercentage <= 0)
+            throw new BadRequestException("مقدار تخفیف نمی‌تواند برابر یا کمتر از صفر باشد");
+        var institutionTemp = await _institutionExtensionTemp.Find(x => x.Id == request.TempId)
+            .FirstOrDefaultAsync();
+        if (institutionTemp == null)
+        {
+            throw new BadRequestException("اطلاعات وارد شده نامعتبر است");
+        }
+
+        if (request.IsInstallment)
+        {
+            if(institutionTemp.MonthlyPayment.DiscountPercetage>0)
+                throw new BadRequestException("تخفیف قبلا برای این قرارداد اعمال شده است");
+        }
+        else
+        {
+            if(institutionTemp.OneTimePayment.DiscountPercetage>0)
+                throw new BadRequestException("تخفیف قبلا برای این قرارداد اعمال شده است");
+        }
+        
+        var calculateRequest = new InstitutionContractSetDiscountRequest()
+        {
+            Duration = institutionTemp.Duration.Value,
+            PaymentAmount = request.PaymentAmount,
+            DiscountPercentage = request.DiscountPercentage,
+            IsInstallment = request.IsInstallment
+        };
+        var res = CalculateDiscount(calculateRequest);
+
+        //این به این دلیل هست که متد caclulate discount یکی از مقادیر رو پر میکنه و ما نیاز داریم هر دو مقدار رو داشته باشیم
+        if (request.IsInstallment)
+        {
+            res.OneTime = institutionTemp.OneTimePayment;
+        }
+        else
+        {
+            res.Monthly = institutionTemp.MonthlyPayment;
+        }
+        institutionTemp.SetAmountAndDuration(institutionTemp.Duration.Value, res.Monthly, res.OneTime);
+        await _institutionExtensionTemp.ReplaceOneAsync(x => x.Id == institutionTemp.Id,
+            institutionTemp);
+
+        return new()
+        {
+            OneTime = institutionTemp.OneTimePayment,
+            Monthly = institutionTemp.MonthlyPayment
+        };
+    }
+
     public async Task<OperationResult> ExtensionComplete(InstitutionContractExtensionCompleteRequest request)
     {
         var institutionContractTemp = await _institutionExtensionTemp.Find(x => x.Id == request.TemporaryId)
@@ -2321,7 +2418,7 @@ public class InstitutionContractRepository : RepositoryBase<long, InstitutionCon
             previousInstitutionContract.Description,
             "NotOfficial", "JobRelation", hasValueAddedTax,
             payment.Tax.MoneyToDouble(), [],
-            request.LawId);
+            request.LawId,payment.DiscountPercetage,payment.DiscountedAmount.MoneyToDouble());
 
         await CreateAsync(entity);
         await SaveChangesAsync();

ServiceHost/Areas/Admin/Controllers/institutionContractController.cs

@@ -545,6 +545,13 @@ public class institutionContractController : AdminBaseController
         var res =await _institutionContractApplication.GetExtensionPaymentMethod(request);
         return res;
     }
+    
+    [HttpPost("extension/set-discount")]
+    public async Task<ActionResult<InstitutionContractExtensionPaymentResponse>> SetDiscountForExtension([FromBody]InstitutionContractSetDiscountForExtensionRequest request)
+    {
+        var res =await _institutionContractApplication.SetDiscountForExtension(request);
+        return res;
+    }
 
     [HttpPost("extenstion/complete")]
     public async Task<ActionResult<OperationResult>> ExtensionComplete([FromBody]InstitutionContractExtensionCompleteRequest request)