Implemented basic endpoints

PostFundManagement.Api/Endpoints/Users/GetUsersEndpoint.cs

@@ -1,3 +1,4 @@
+using PostFundManagement.Domain;
 using PostFundManagement.Domain.Abstractions;
 using PostFundManagement.Domain.Api;
 using PostFundManagement.Domain.Extensions;
@@ -10,9 +11,40 @@ public class GetUsersEndpoint : IEndpoint
 {
     public void Map(IEndpointRouteBuilder builder)
     {
-        builder.MapGet("api/users", (IDbContextFactory<ApplicationDbContext> contextFactory) => 
+        builder.MapGet("api/users", async (IDbContextFactory<ApplicationDbContext> contextFactory, 
+            int page = 1, int pageSize = 10, ActivityStatus? status = null, string? email = null, string? 
+            sortBy = null, bool sortDescending = false, CancellationToken cancellationToken = default) =>
         {
-            throw new NotImplementedException();
+            if (page < 1) page = 1;
+            if (pageSize < 1) pageSize = 10;
+            if (pageSize > 100) pageSize = 100;
+
+            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);
+
+            var query = context.Users.AsNoTracking();
+
+            if (status.HasValue)
+                query = query.Where(u => u.Status == status.Value);
+
+            if (!string.IsNullOrWhiteSpace(email))
+                query = query.Where(u => u.Email != null && u.Email.Contains(email));
+
+            if (!string.IsNullOrWhiteSpace(sortBy))
+                query = sortBy.ToLowerInvariant() switch
+                {
+                    "email" => sortDescending ? query.OrderByDescending(u => u.Email) : query.OrderBy(u => u.Email),
+                    "lastloginat" => sortDescending ? query.OrderByDescending(u => u.LastLoginAt) : query.OrderBy(u => u.LastLoginAt),
+                    "status" => sortDescending ? query.OrderByDescending(u => u.Status) : query.OrderBy(u => u.Status),
+                    _ => sortDescending ? query.OrderByDescending(u => u.Id) : query.OrderBy(u => u.Id)
+                };
+            else
+                query = query.OrderBy(u => u.Id);
+
+            var totalCount = await query.CountAsync(cancellationToken);
+
+            var items = await query.Skip((page - 1) * pageSize).Take(pageSize).ToListAsync(cancellationToken);
+
+            return Results.Ok(new { Items = items, TotalCount = totalCount, Page = page, PageSize = pageSize });
         })
         .RequireAuthorization()
         .WithDescription("Paginated, searchable directory of system users. Supports filtering by ActivityStatus, searching by Email, and sorting")
@@ -22,5 +54,5 @@ public class GetUsersEndpoint : IEndpoint
         .Produces(StatusCodes.Status400BadRequest)
         .Produces(StatusCodes.Status401Unauthorized)
         .WithTags(EndpointTags.Users);
-    }    
+    }
 }