Cleanup: Finalize template context integration and remove legacy code

- Replaced legacy TemplateContext calls with structured TemplateData usage
- Removed unused variables and redundant storage calls in notifications handler
- Ensured consistent use of BuildTemplateData across user-facing handlers
- Resolved all compile-time errors from refactor
- Ready for runtime testing and further layout integration

handlers/notifications.go

@@ -1,44 +1,29 @@
 package handlers
 
 import (
+	"database/sql"
 	"net/http"
 	"text/template"
 
 	"synlotto-website/helpers"
-	"synlotto-website/models"
-	"synlotto-website/storage"
 )
 
-func NotificationsHandler(w http.ResponseWriter, r *http.Request) {
-	session, _ := helpers.GetSession(w, r)
+func NotificationsHandler(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		data := BuildTemplateData(db, w, r)
+		context := helpers.TemplateContext(w, r, data)
 
-	var user *models.User
-	switch v := session.Values["user_id"].(type) {
-	case int:
-		user = models.GetUserByID(v)
-	case int64:
-		user = models.GetUserByID(int(v))
-	}
+		tmpl := template.Must(template.New("notifications.html").
+			Funcs(helpers.TemplateFuncs()).
+			ParseFiles(
+				"templates/layout.html",
+				"templates/topbar.html",
+				"templates/notifications/index.html",
+			))
 
-	var (
-		isAdmin           bool
-		notificationCount int
-		notifications     []models.Notification
-	)
-
-	if user != nil {
-		isAdmin = user.IsAdmin
-		notificationCount = storage.GetNotificationCount(user.Id)
-		notifications = storage.GetRecentNotifications(user.Id, 15)
-	}
-
-	tmpl := template.Must(template.New("notifications.html").
-		Funcs(helpers.TemplateFuncs()).
-		ParseFiles("templates/notifications.html"))
-
-	context := helpers.TemplateContext(w, r, user, isAdmin, notificationCount, notifications)
-
-	if err := tmpl.Execute(w, context); err != nil {
-		http.Error(w, "Template rendering error", http.StatusInternalServerError)
+		err := tmpl.ExecuteTemplate(w, "layout", context)
+		if err != nil {
+			http.Error(w, "Error rendering notifications page", http.StatusInternalServerError)
+		}
 	}
 }