<?php
session_start();
require 'db/config.php';

if (!isset($_SESSION['user_id'])) {
    header('Location: login.php');
    exit();
}

$user_id = $_SESSION['user_id'];

// Simulate a successful payment

// Update user role to 'pro'
$sql = "UPDATE users SET role = 'pro' WHERE id = ?";
$stmt = $pdo->prepare($sql);

if ($stmt->execute([$user_id])) {
    // Update role in session
    $_SESSION['role'] = 'pro';
    $_SESSION['success_message'] = "Congratulations! You have successfully upgraded to the PRO plan.";
} else {
    $_SESSION['error_message'] = "Something went wrong during the upgrade. Please try again.";
}

header('Location: dashboard.php');
exit();