feat: add network leg position assignment for new users

src/CMSMicroservice.Application/OtpTokenCQ/Commands/VerifyOtpToken/VerifyOtpTokenCommandHandler.cs

@@ -1,3 +1,4 @@
+using CMSMicroservice.Domain.Enums;
 using CMSMicroservice.Domain.Events;
 using Microsoft.Extensions.Configuration;
 
@@ -75,6 +76,26 @@ public class VerifyOtpTokenCommandHandler : IRequestHandler<VerifyOtpTokenComman
             if (await _context.Users.CountAsync(x => x.NetworkParentId == parent.Id, cancellationToken: cancellationToken) > 1)
                 return new VerifyOtpTokenResponseDto() { Success = false, Message = "ظرفیت معرف تکمیل است!!" };
 
+            // تعیین موقعیت در شبکه (چپ یا راست)
+            var existingChildren = await _context.Users
+                .Where(x => x.NetworkParentId == parent.Id && !x.IsDeleted)
+                .Select(x => x.LegPosition)
+                .ToListAsync(cancellationToken);
+
+            NetworkLeg newUserLegPosition;
+            if (!existingChildren.Any(x => x == NetworkLeg.Left))
+            {
+                newUserLegPosition = NetworkLeg.Left;
+            }
+            else if (!existingChildren.Any(x => x == NetworkLeg.Right))
+            {
+                newUserLegPosition = NetworkLeg.Right;
+            }
+            else
+            {
+                return new VerifyOtpTokenResponseDto() { Success = false, Message = "ظرفیت معرف تکمیل است!!" };
+            }
+
             user = new User
             {
                 Mobile = mobile,
@@ -83,7 +104,8 @@ public class VerifyOtpTokenCommandHandler : IRequestHandler<VerifyOtpTokenComman
                 MobileVerifiedAt = now,
                 IsRulesAccepted = true,
                 RulesAcceptedAt = now,
-                NetworkParentId = parent.Id
+                NetworkParentId = parent.Id,
+                LegPosition = newUserLegPosition
             };
             await _context.Users.AddAsync(user, cancellationToken);
             user.AddDomainEvent(new CreateNewUserEvent(user));