Add validators and services for Product Galleries and Product Tags

- Implemented Create, Delete, Get, and Update validators for Product Galleries.
- Added Create, Delete, Get, and Update validators for Product Tags.
- Created service classes for handling Discount Categories, Discount Orders, Discount Products, Discount Shopping Cart, Product Categories, Product Galleries, and Product Tags.
- Each service class integrates with CQRS for command and query handling.
- Established mapping profiles for Product Galleries.

src/CMSMicroservice.Application/UserOrderCQ/Commands/SubmitShopBuyOrder/SubmitShopBuyOrderCommandHandler.cs

@@ -1,5 +1,7 @@
 using CMSMicroservice.Domain.Enums;
 using CMSMicroservice.Domain.Events;
+using CMSMicroservice.Domain.Entities.Order;
+using Microsoft.Extensions.Logging;
 
 namespace CMSMicroservice.Application.UserOrderCQ.Commands.SubmitShopBuyOrder;
 
@@ -7,26 +9,30 @@ public class
     SubmitShopBuyOrderCommandHandler : IRequestHandler<SubmitShopBuyOrderCommand, SubmitShopBuyOrderResponseDto>
 {
     private readonly IApplicationDbContext _context;
+    private readonly ILogger<SubmitShopBuyOrderCommandHandler> _logger;
 
-    public SubmitShopBuyOrderCommandHandler(IApplicationDbContext context)
+    public SubmitShopBuyOrderCommandHandler(
+        IApplicationDbContext context,
+        ILogger<SubmitShopBuyOrderCommandHandler> logger)
     {
         _context = context;
+        _logger = logger;
     }
 
     public async Task<SubmitShopBuyOrderResponseDto> Handle(SubmitShopBuyOrderCommand request,
         CancellationToken cancellationToken)
     {
         var user = await _context.Users
-            .Include(i => i.UserAddresss)
+            .Include(i => i.UserAddresses)
             .Include(i => i.UserWallets)
             .ThenInclude(i => i.UserWalletChangeLogs)
-            .Include(i => i.UserCartss)
+            .Include(i => i.UserCarts)
             .ThenInclude(i => i.Product)
             .FirstOrDefaultAsync(w => w.Id == request.UserId, cancellationToken: cancellationToken);
-        if (user.UserCartss.Count == 0)
+        if (user.UserCarts.Count == 0)
             throw new NotFoundException("UserCart", request.UserId);
 
-        if (user.UserCartss.Sum(s => s.Count * s.Product.Price) != request.TotalAmount)
+        if (user.UserCarts.Sum(s => s.Count * s.Product.Price) != request.TotalAmount)
             throw new Exception("مبلغ سفارش با مجموع سبد خرید مطابقت ندارد.");
 
 
@@ -37,7 +43,7 @@ public class
         if (userWallet.Balance<=0 || userWallet.Balance<request.TotalAmount)
             throw new Exception("موجودی کیف پول کاربر برای انجام این تراکنش کافی نیست.");
         
-        var newTransaction = new Transactions()
+        var newTransaction = new Transaction()
         {
             Amount = request.TotalAmount,
             Description = "خرید از فروشگاه",
@@ -46,7 +52,7 @@ public class
             Type = TransactionType.Buy,
             RefId = "localwallet-" + Guid.NewGuid().ToString()
         };
-        await _context.Transactionss.AddAsync(newTransaction, cancellationToken);
+        await _context.Transactions.AddAsync(newTransaction, cancellationToken);
         await _context.SaveChangesAsync(cancellationToken);
         
         var newWalletLog = new UserWalletChangeLog()
@@ -70,22 +76,31 @@ public class
             PaymentMethod = PaymentMethod.Wallet,
             PaymentDate = DateTime.Now,
             UserId = request.UserId,
-            UserAddressId = user.UserAddresss.First(f => f.IsDefault).Id,
+            UserAddressId = user.UserAddresses.First(f => f.IsDefault).Id,
             TransactionId = newTransaction.Id,
             // سفارش فروشگاهی فیزیکی است، پس در ابتدا در انتظار ارسال است
             DeliveryStatus = DeliveryStatus.Pending
         };
         await _context.UserOrders.AddAsync(newOrder, cancellationToken);
         await _context.SaveChangesAsync(cancellationToken);
-        var factorDetailsList = user.UserCartss.Select(s => new FactorDetails()
+        
+        // محاسبه و ثبت VAT (اگر فعال باشد)
+        var vatCreated = await CalculateAndSaveVAT(newOrder.Id, request.TotalAmount, cancellationToken);
+        if (vatCreated)
+        {
+            newOrder.HasVAT = true;
+            await _context.SaveChangesAsync(cancellationToken);
+        }
+        
+        var factorDetailsList = user.UserCarts.Select(s => new FactorDetails()
         {
             ProductId = s.ProductId,
             Count = s.Count,
             UnitPrice = s.Product.Price,
             OrderId = newOrder.Id
         });
-        await _context.FactorDetailss.AddRangeAsync(factorDetailsList, cancellationToken);
-        user.UserCartss.Clear();
+        await _context.FactorDetails.AddRangeAsync(factorDetailsList, cancellationToken);
+        user.UserCarts.Clear();
         await _context.SaveChangesAsync(cancellationToken);
         var finalResult = new SubmitShopBuyOrderResponseDto()
         {
@@ -94,4 +109,66 @@ public class
         };
         return finalResult;
     }
+
+    private async Task<bool> CalculateAndSaveVAT(long orderId, long orderAmount, CancellationToken cancellationToken)
+    {
+        try
+        {
+            // بررسی فعال بودن VAT
+            var vatEnabledConfig = await _context.SystemConfigurations
+                .FirstOrDefaultAsync(x => x.Scope == ConfigurationScope.VAT && x.Key == "IsEnabled", cancellationToken);
+
+            if (vatEnabledConfig == null || !bool.TryParse(vatEnabledConfig.Value, out var isEnabled) || !isEnabled)
+            {
+                _logger.LogInformation("VAT is disabled. Skipping VAT calculation for order {OrderId}", orderId);
+                return false;
+            }
+
+            // دریافت نرخ VAT
+            var vatRateConfig = await _context.SystemConfigurations
+                .FirstOrDefaultAsync(x => x.Scope == ConfigurationScope.VAT && x.Key == "Rate", cancellationToken);
+
+            if (vatRateConfig == null || !decimal.TryParse(vatRateConfig.Value, out var vatRate))
+            {
+                _logger.LogWarning("VAT Rate configuration not found or invalid. Using default 0.09");
+                vatRate = 0.09m;
+            }
+
+            // محاسبه مالیات
+            var vatAmount = (long)(orderAmount * vatRate);
+            var totalAmount = orderAmount + vatAmount;
+
+            // ثبت VAT
+            var orderVAT = new OrderVAT
+            {
+                OrderId = orderId,
+                VATRate = vatRate,
+                BaseAmount = orderAmount,
+                VATAmount = vatAmount,
+                TotalAmount = totalAmount,
+                IsPaid = true,
+                PaidAt = DateTime.UtcNow
+            };
+
+            await _context.OrderVATs.AddAsync(orderVAT, cancellationToken);
+            await _context.SaveChangesAsync(cancellationToken);
+
+            _logger.LogInformation(
+                "VAT calculated and saved for order {OrderId}. Rate: {Rate}%, Base: {Base}, VAT: {VAT}, Total: {Total}",
+                orderId,
+                vatRate * 100,
+                orderAmount,
+                vatAmount,
+                totalAmount
+            );
+            
+            return true;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Error calculating VAT for order {OrderId}", orderId);
+            // عدم محاسبه VAT نباید مانع ثبت سفارش شود
+            return false;
+        }
+    }
 }