Fix admin route access and backend configuration

- Added /admin redirect to login page in nginx config
- Fixed backend server.js route ordering for proper admin handling
- Updated authentication middleware and routes
- Added user management routes
- Configured PostgreSQL integration
- Updated environment configuration

Sky_Art_shop/Controllers/PortfolioController.cs

@@ -0,0 +1,58 @@
+using Microsoft.AspNetCore.Mvc;
+using SkyArtShop.Models;
+using SkyArtShop.Services;
+
+namespace SkyArtShop.Controllers
+{
+    public class PortfolioController : Controller
+    {
+        private readonly MongoDBService _mongoService;
+        private readonly string _categoriesCollection = "PortfolioCategories";
+        private readonly string _projectsCollection = "PortfolioProjects";
+
+        public PortfolioController(MongoDBService mongoService)
+        {
+            _mongoService = mongoService;
+        }
+
+        public async Task<IActionResult> Index()
+        {
+            var categories = await _mongoService.GetAllAsync<PortfolioCategory>(_categoriesCollection);
+            var activeCategories = categories.Where(c => c.IsActive).OrderBy(c => c.DisplayOrder).ToList();
+            
+            return View(activeCategories);
+        }
+
+        public async Task<IActionResult> Category(string slug)
+        {
+            var categories = await _mongoService.GetAllAsync<PortfolioCategory>(_categoriesCollection);
+            var category = categories.FirstOrDefault(c => c.Slug == slug && c.IsActive);
+            
+            if (category == null)
+            {
+                return NotFound();
+            }
+
+            var projects = await _mongoService.GetAllAsync<PortfolioProject>(_projectsCollection);
+            var categoryProjects = projects
+                .Where(p => p.CategoryId == category.Id && p.IsActive)
+                .OrderBy(p => p.DisplayOrder)
+                .ToList();
+
+            ViewBag.Category = category;
+            return View(categoryProjects);
+        }
+
+        public async Task<IActionResult> Project(string id)
+        {
+            var project = await _mongoService.GetByIdAsync<PortfolioProject>(_projectsCollection, id);
+            
+            if (project == null)
+            {
+                return NotFound();
+            }
+
+            return View(project);
+        }
+    }
+}