Complete Phase 1: MVC, DB migrations, Auth, RBAC, Security, and Views

app/Services/Database/ActivityLogger.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Services\Database;
+
+use App\Core\Request;
+use PDO;
+
+class ActivityLogger
+{
+    private PDO $pdo;
+    private Request $request;
+
+    public function __construct(Connection $connection, Request $request)
+    {
+        $this->pdo = $connection->getPdo();
+        $this->request = $request;
+    }
+
+    /**
+     * Log user or system activity.
+     */
+    public function log(?int $userId, string $action, ?string $description = null): void
+    {
+        $ip = $this->request->getIp();
+        $ua = $this->request->getUserAgent();
+
+        $sql = "INSERT INTO activity_logs (user_id, action, description, ip_address, user_agent) 
+                VALUES (?, ?, ?, ?, ?)";
+        
+        $stmt = $this->pdo->prepare($sql);
+        $stmt->execute([$userId, $action, $description, $ip, $ua]);
+    }
+}