<?php
// Include the Stripe PHP library (assuming it's installed via Composer)
// require_once 'vendor/autoload.php';

require_once 'db/config.php';

// Set your Stripe API key and webhook secret
// \Stripe\Stripe::setApiKey('YOUR_STRIPE_SECRET_KEY');
$webhook_secret = 'YOUR_STRIPE_WEBHOOK_SECRET';

$payload = @file_get_contents('php://input');
$sig_header = $_SERVER['HTTP_STRIPE_SIGNATURE'];
$event = null;

/*
try {
    $event = \Stripe\Webhook::constructEvent(
        $payload, $sig_header, $webhook_secret
    );
} catch(\UnexpectedValueException $e) {
    // Invalid payload
    http_response_code(400);
    exit();
} catch(\Stripe\Exception\SignatureVerificationException $e) {
    // Invalid signature
    http_response_code(400);
    exit();
}

// Handle the event
switch ($event->type) {
    case 'checkout.session.completed':
        $session = $event->data->object;
        $user_id = $session->client_reference_id;
        $stripe_subscription_id = $session->subscription;

        // Get subscription details
        $stripe = new \Stripe\StripeClient('YOUR_STRIPE_SECRET_KEY');
        $subscription = $stripe->subscriptions->retrieve($stripe_subscription_id, []);
        $plan = $subscription->items->data[0]->price->nickname;
        
        // Store subscription in the database
        try {
            $pdo = db();
            $stmt = $pdo->prepare("INSERT INTO subscriptions (user_id, stripe_subscription_id, plan, status, start_date, end_date) VALUES (?, ?, ?, ?, FROM_UNIXTIME(?), FROM_UNIXTIME(?))");
            $stmt->execute([
                $user_id,
                $stripe_subscription_id,
                $plan,
                $subscription->status,
                $subscription->current_period_start,
                $subscription->current_period_end
            ]);
        } catch (PDOException $e) {
            // Log error
            error_log("Webhook DB Error: " . $e->getMessage());
        }
        break;
    case 'customer.subscription.updated':
        $subscription = $event->data->object;
        $stripe_subscription_id = $subscription->id;
        $status = $subscription->status;
        $end_date = $subscription->cancel_at_period_end ? $subscription->current_period_end : null;

        try {
            $pdo = db();
            $stmt = $pdo->prepare("UPDATE subscriptions SET status = ?, end_date = FROM_UNIXTIME(?) WHERE stripe_subscription_id = ?");
            $stmt->execute([$status, $end_date, $stripe_subscription_id]);
        } catch (PDOException $e) {
            // Log error
            error_log("Webhook DB Error: " . $e->getMessage());
        }
        break;
    // ... handle other event types
    default:
        // Unexpected event type
}
*/

http_response_code(200);
?>