<?php
    use PHPMailer\PHPMailer\PHPMailer;
    use PHPMailer\PHPMailer\SMTP;
    use PHPMailer\PHPMailer\Exception;

    require_once 'conf.php';
    require_once $webPath . 'includes/connect_endpoint_crontabs.php';

    $query = "SELECT * FROM notifications WHERE id = 1";
    $result = $db->query($query);

    if ($row = $result->fetchArray(SQLITE3_ASSOC)) {
        $notificationsEnabled = $row['enabled'];
        $days = $row['days'];
    } else {
        echo "Notifications are disabled. No need to run.";
    }

    if ($notificationsEnabled) {
        $currencies = array();
        $query = "SELECT * FROM currencies";
        $result = $db->query($query);
        while ($row = $result->fetchArray(SQLITE3_ASSOC)) {
            $currencyId = $row['id'];
            $currencies[$currencyId] = $row;
        }

        $stmt = $db->prepare('SELECT * FROM subscriptions WHERE notify = :notify AND inactive = :inactive ORDER BY payer_user_id ASC');
        $stmt->bindValue(':notify', 1, SQLITE3_INTEGER);
        $stmt->bindValue(':inactive', 0, SQLITE3_INTEGER);
        $resultSubscriptions = $stmt->execute();
    
        $notify = []; $i = 0;
        $currentDate = new DateTime('now');
        while ($rowSubscription = $resultSubscriptions->fetchArray(SQLITE3_ASSOC)) {
            $nextPaymentDate = new DateTime($rowSubscription['next_payment']);
            $difference = $currentDate->diff($nextPaymentDate)->days + 1;
            if ($difference === $days) {
                $notify[$rowSubscription['payer_user_id']][$i]['name'] = $rowSubscription['name'];
                $notify[$rowSubscription['payer_user_id']][$i]['price'] = $rowSubscription['price'] . $currencies[$rowSubscription['currency_id']]['symbol'];
                $i++;
            }
        }

        if (!empty($notify)) {
            $stmt = $db->prepare('SELECT * FROM user WHERE id = :id');
            $stmt->bindValue(':id', 1, SQLITE3_INTEGER);
            $result = $stmt->execute();
            $defaultUser = $result->fetchArray(SQLITE3_ASSOC);
            $defaultEmail = $defaultUser['email'];
            $defaultName = $defaultUser['username'];

            foreach ($notify as $userId => $perUser) {
                $dayText = $days == 1 ? "tomorrow" : "in " . $days . " days";
                $message = "The following subscriptions are up for renewal " . $dayText . ":\n";

                foreach ($perUser as $subscription) {
                    $message .= $subscription['name'] . " for " . $subscription['price'] . "\n";
                }

                $ntfy_title = 'Wallos Notification';
                $ntfy_body = $message;
                file_get_contents('https://ntfy.sh/canvas-progress-east', false, stream_context_create([
                    'http' => [
                        'method' => 'POST', // PUT also works
                        'header' =>
                            "Content-Type: text/plain\r\n" .
                            "Title: Subscription Alert",
                        'content' => $message
                    ]
                ]));
            }
        } else {
            echo "Nothing to notify.";
        }

    }
?>