Added authentication functionality and simple role based model

add_project.php

@@ -1,15 +1,22 @@
 <?php
 require 'db.php';
+require 'auth.php';
+
+header('Content-Type: application/json');
+require_login();
+
+$user_id = current_user_id();
 
 $data = json_decode(file_get_contents('php://input'), true);
-if (!isset($data['name']) || empty(trim($data['name']))) {
+$name = trim($data['name'] ?? '');
+
+if ($name === '') {
     http_response_code(400);
-    echo json_encode(['error' => 'Project name is required']);
+    echo json_encode(['success' => false, 'error' => 'Project name is required']);
     exit;
 }
 
-$stmt = $pdo->prepare("INSERT INTO projects (name) VALUES (?)");
-$stmt->execute([trim($data['name'])]);
+$stmt = $pdo->prepare("INSERT INTO projects (user_id, name) VALUES (?, ?)");
+$stmt->execute([$user_id, $name]);
 
 echo json_encode(['success' => true, 'id' => $pdo->lastInsertId()]);
-?>