Add paginated user retrieval functionality in AdminController and related services. Implemented UsersFilter for filtering user queries and added LastConnectionDate property to User model. Updated database schema and frontend API to support new user management features.

src/Managing.Infrastructure.Database/PostgreSql/Entities/UserEntity.cs

@@ -14,6 +14,7 @@ public class UserEntity
     public string? AvatarUrl { get; set; }
     public string? TelegramChannel { get; set; }
     public string? OwnerWalletAddress { get; set; }
+    public DateTimeOffset? LastConnectionDate { get; set; }
     public bool IsAdmin { get; set; }
 
     // Navigation properties

src/Managing.Infrastructure.Database/PostgreSql/PostgreSqlUserRepository.cs

@@ -1,10 +1,12 @@
 using Managing.Application.Abstractions.Repositories;
 using Managing.Application.Abstractions.Services;
+using Managing.Application.Abstractions.Shared;
 using Managing.Domain.Accounts;
 using Managing.Domain.Users;
 using Managing.Infrastructure.Databases.PostgreSql.Entities;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging;
+using static Managing.Common.Enums;
 
 namespace Managing.Infrastructure.Databases.PostgreSql;
 
@@ -318,4 +320,77 @@ public class PostgreSqlUserRepository : BaseRepositoryWithLogging, IUserReposito
             }
         }, nameof(SaveOrUpdateUserAsync), ("userName", user.Name), ("userId", user.Id));
     }
+
+    public async Task<(IEnumerable<User> Users, int TotalCount)> GetUsersPaginatedAsync(int page, int pageSize, UserSortableColumn sortBy, string sortOrder, UsersFilter filter)
+    {
+        return await ExecuteWithLoggingAsync(async () =>
+        {
+            try
+            {
+                await PostgreSqlConnectionHelper.EnsureConnectionOpenAsync(_context);
+
+                var query = _context.Users.AsNoTracking();
+
+                // Apply filters
+                if (!string.IsNullOrWhiteSpace(filter.UserNameContains))
+                {
+                    query = query.Where(u => EF.Functions.ILike(u.Name, $"%{filter.UserNameContains.Trim()}%"));
+                }
+
+                if (!string.IsNullOrWhiteSpace(filter.OwnerAddressContains))
+                {
+                    query = query.Where(u => EF.Functions.ILike(u.OwnerWalletAddress, $"%{filter.OwnerAddressContains.Trim()}%"));
+                }
+
+                if (!string.IsNullOrWhiteSpace(filter.AgentNameContains))
+                {
+                    query = query.Where(u => EF.Functions.ILike(u.AgentName, $"%{filter.AgentNameContains.Trim()}%"));
+                }
+
+                if (!string.IsNullOrWhiteSpace(filter.TelegramChannelContains))
+                {
+                    query = query.Where(u => EF.Functions.ILike(u.TelegramChannel, $"%{filter.TelegramChannelContains.Trim()}%"));
+                }
+
+                // Get total count for pagination
+                var totalCount = await query.CountAsync().ConfigureAwait(false);
+
+                // Apply sorting
+                query = sortBy switch
+                {
+                    UserSortableColumn.Id => sortOrder.ToLower() == "desc" ? query.OrderByDescending(u => u.Id) : query.OrderBy(u => u.Id),
+                    UserSortableColumn.Name => sortOrder.ToLower() == "desc" ? query.OrderByDescending(u => u.Name) : query.OrderBy(u => u.Name),
+                    UserSortableColumn.OwnerWalletAddress => sortOrder.ToLower() == "desc" ? query.OrderByDescending(u => u.OwnerWalletAddress) : query.OrderBy(u => u.OwnerWalletAddress),
+                    UserSortableColumn.AgentName => sortOrder.ToLower() == "desc" ? query.OrderByDescending(u => u.AgentName) : query.OrderBy(u => u.AgentName),
+                    _ => query.OrderBy(u => u.Id) // Default sorting
+                };
+
+                // Apply pagination
+                var users = await query
+                    .Skip((page - 1) * pageSize)
+                    .Take(pageSize)
+                    .Select(u => new UserEntity
+                    {
+                        Id = u.Id,
+                        Name = u.Name,
+                        AgentName = u.AgentName,
+                        AvatarUrl = u.AvatarUrl,
+                        TelegramChannel = u.TelegramChannel,
+                        OwnerWalletAddress = u.OwnerWalletAddress,
+                        IsAdmin = u.IsAdmin,
+                        LastConnectionDate = u.LastConnectionDate
+                    })
+                    .ToListAsync()
+                    .ConfigureAwait(false);
+
+                var domainUsers = users.Select(PostgreSqlMappers.Map).ToList();
+
+                return (domainUsers, totalCount);
+            }
+            finally
+            {
+                await PostgreSqlConnectionHelper.SafeCloseConnectionAsync(_context);
+            }
+        }, nameof(GetUsersPaginatedAsync), ("page", page), ("pageSize", pageSize), ("sortBy", sortBy), ("sortOrder", sortOrder));
+    }
 }