Complete tasks 4.1-4.2: Page management service and HTTP endpoints

- Implemented PageService with full CRUD operations
- Added GetPages, CreatePage, UpdatePage, DeletePage, ReorderPages methods
- Cascade deletion of widgets when page is deleted
- Prevention of last page deletion
- Created page HTTP endpoints (GET, POST, PUT, DELETE, reorder)
- HTMX-friendly HTML fragment responses
- Comprehensive unit tests for service and handlers
- Updated dashboard to use PageService and create default pages

internal/handlers/dashboard_handler.go

@@ -7,21 +7,26 @@ import (
 	"path/filepath"
 
 	"custom-start-page/internal/middleware"
+	"custom-start-page/internal/models"
+	"custom-start-page/internal/services"
 )
 
 // DashboardHandler handles dashboard-related HTTP requests
 type DashboardHandler struct {
-	templates *template.Template
+	pageService services.PageServiceInterface
+	templates   *template.Template
 }
 
 // NewDashboardHandler creates a new dashboard handler
-func NewDashboardHandler() *DashboardHandler {
+func NewDashboardHandler(pageService services.PageServiceInterface) *DashboardHandler {
 	// Parse templates
 	templates := template.Must(template.ParseGlob(filepath.Join("templates", "*.html")))
 	template.Must(templates.ParseGlob(filepath.Join("templates", "layouts", "*.html")))
+	template.Must(templates.ParseGlob(filepath.Join("templates", "partials", "*.html")))
 	
 	return &DashboardHandler{
-		templates: templates,
+		pageService: pageService,
+		templates:   templates,
 	}
 }
 
@@ -35,14 +40,23 @@ func (h *DashboardHandler) HandleDashboard(w http.ResponseWriter, r *http.Reques
 		return
 	}
 
-	// TODO: Fetch user's pages from database
-	// For now, we'll use mock data
-	pages := []map[string]interface{}{
-		{
-			"ID":     "default-page",
-			"Name":   "Home",
-			"Active": true,
-		},
+	// Fetch user's pages from database
+	pages, err := h.pageService.GetPages(r.Context(), userID)
+	if err != nil {
+		log.Printf("Failed to get pages: %v", err)
+		http.Error(w, "Failed to load pages", http.StatusInternalServerError)
+		return
+	}
+
+	// If user has no pages, create default "Home" page
+	if len(pages) == 0 {
+		defaultPage, err := h.pageService.CreateDefaultPage(r.Context(), userID)
+		if err != nil {
+			log.Printf("Failed to create default page: %v", err)
+			http.Error(w, "Failed to create default page", http.StatusInternalServerError)
+			return
+		}
+		pages = []*models.Page{defaultPage}
 	}
 
 	// Render dashboard template