<?php

/**
 *  PHP Mikrotik Billing (https://github.com/hotspotbilling/phpnuxbill/)
 *  by https://t.me/ibnux
 **/

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;
use PHPMailer\PHPMailer\SMTP;
require $root_path . 'system/autoload/mail/Exception.php';
require $root_path . 'system/autoload/mail/PHPMailer.php';
require $root_path . 'system/autoload/mail/SMTP.php';

class Message
{

    public static function sendTelegram($txt)
    {
        global $config;
        run_hook('send_telegram'); #HOOK
        if (!empty($config['telegram_bot']) && !empty($config['telegram_target_id'])) {
            return Http::getData('https://api.telegram.org/bot' . $config['telegram_bot'] . '/sendMessage?chat_id=' . $config['telegram_target_id'] . '&text=' . urlencode($txt));
        }
    }


    public static function sendSMS($phone, $txt)
    {
        global $config;
        if(empty($txt)){
            return "";
        }
        run_hook('send_sms'); #HOOK
        if (!empty($config['sms_url'])) {
            if (strlen($config['sms_url']) > 4 && substr($config['sms_url'], 0, 4) != "http") {
                if (strlen($txt) > 160) {
                    $txts = str_split($txt, 160);
                    try {
                        $mikrotik = Mikrotik::info($config['sms_url']);
                        $client = Mikrotik::getClient($mikrotik['ip_address'], $mikrotik['username'], $mikrotik['password']);
                        foreach ($txts as $txt) {
                            Mikrotik::sendSMS($client, $phone, $txt);
                        }
                    } catch (Exception $e) {
                        // ignore, add to logs
                        _log("Failed to send SMS using Mikrotik.\n" . $e->getMessage(), 'SMS', 0);
                    }
                } else {
                    try {
                        $mikrotik = Mikrotik::info($config['sms_url']);
                        $client = Mikrotik::getClient($mikrotik['ip_address'], $mikrotik['username'], $mikrotik['password']);
                        Mikrotik::sendSMS($client, $phone, $txt);
                    } catch (Exception $e) {
                        // ignore, add to logs
                        _log("Failed to send SMS using Mikrotik.\n" . $e->getMessage(), 'SMS', 0);
                    }
                }
            } else {
                $smsurl = str_replace('[number]', urlencode($phone), $config['sms_url']);
                $smsurl = str_replace('[text]', urlencode($txt), $smsurl);
                return Http::getData($smsurl);
            }
        }
    }

    public static function sendWhatsapp($phone, $txt)
    {
        global $config;
        if(empty($txt)){
            return "";
        }
        run_hook('send_whatsapp'); #HOOK
        if (!empty($config['wa_url'])) {
            $waurl = str_replace('[number]', urlencode(Lang::phoneFormat($phone)), $config['wa_url']);
            $waurl = str_replace('[text]', urlencode($txt), $waurl);
            return Http::getData($waurl);
        }
    }

    public static function sendEmail($to, $subject, $body)
    {
        global $config;
        if(empty($body)){
            return "";
        }
        run_hook('send_email'); #HOOK
        if (empty($config['smtp_host'])) {
            $attr = "";
            if (!empty($config['mail_from'])) {
                $attr .= "From: " . $config['mail_from'] . "\r\n";
            }
            if (!empty($config['mail_reply_to'])) {
                $attr .= "Reply-To: " . $config['mail_reply_to'] . "\r\n";
            }
            mail($to, $subject, $body, $attr);
        } else {
            $mail = new PHPMailer();
            $mail->isSMTP();
            $mail->SMTPDebug = SMTP::DEBUG_SERVER;
            $mail->Host       = $config['smtp_host'];
            $mail->SMTPAuth   = true;
            $mail->Username   = $config['smtp_user'];
            $mail->Password   = $config['smtp_pass'];
            $mail->SMTPSecure = $config['smtp_ssltls'];
            $mail->Port       = $config['smtp_port'];
            if (!empty($config['mail_from'])) {
                $mail->setFrom($config['mail_from']);
            }
            if (!empty($config['mail_reply_to'])) {
                $mail->addReplyTo($config['mail_reply_to']);
            }
            $mail->isHTML(false);
            $mail->addAddress($to);
            $mail->Subject = $subject;
            $mail->Body    = $body;
            $mail->send();
        }
    }

    public static function sendPackageNotification($customer, $package, $price, $message, $via, $plan_type = null)
    {
        global $ds;
        if(empty($message)){
            return "";
        }
        
        // Get plan-specific template if plan_type is provided
        $template = self::getPlanSpecificTemplate($message, $plan_type);
        
        $msg = str_replace('[[name]]', $customer['fullname'], $template);
        $msg = str_replace('[[username]]', $customer['username'], $msg);
        $msg = str_replace('[[plan]]', $package, $msg);
        $msg = str_replace('[[package]]', $package, $msg);
        $msg = str_replace('[[price]]', Lang::moneyFormat($price), $msg);
        $msg = str_replace('[[plan_type]]', $plan_type ? ucfirst(strtolower($plan_type)) : 'Internet', $msg);
        
        // Add service-specific variables
        global $config;
        $msg = str_replace('[[service_portal]]', !empty($config['hotspot_url']) ? $config['hotspot_url'] : APP_URL, $msg);
        $msg = str_replace('[[support_contact]]', !empty($config['phone']) ? $config['phone'] : 'our support team', $msg);
        
        list($bills, $add_cost) = User::getBills($customer['id']);
        if($add_cost>0){
            $note = "";
            foreach ($bills as $k => $v) {
                $note .= $k . " : " . Lang::moneyFormat($v) . "\n";
            }
            $note .= "Total : " . Lang::moneyFormat($add_cost+$price) . "\n";
            $msg = str_replace('[[bills]]', $note, $msg);
        }else{
            $msg = str_replace('[[bills]]', '', $msg);
        }
        if ($ds) {
            $msg = str_replace('[[expired_date]]', Lang::dateAndTimeFormat($ds['expiration'], $ds['time']), $msg);
        }else{
            $msg = str_replace('[[expired_date]]', "", $msg);
        }
        if (
            !empty($customer['phonenumber']) && strlen($customer['phonenumber']) > 5
            && !empty($template) && in_array($via, ['sms', 'wa'])
        ) {
            if ($via == 'sms') {
                echo Message::sendSMS($customer['phonenumber'], $msg);
            } else if ($via == 'wa') {
                echo Message::sendWhatsapp($customer['phonenumber'], $msg);
            }
        }
        return "$via: $msg";
    }

    public static function sendBalanceNotification($phone, $name, $balance, $balance_now, $message, $via)
    {
        $msg = str_replace('[[name]]', $name, $message);
        $msg = str_replace('[[current_balance]]', Lang::moneyFormat($balance_now), $msg);
        $msg = str_replace('[[balance]]', Lang::moneyFormat($balance), $msg);
        if (
            !empty($phone) && strlen($phone) > 5
            && !empty($message) && in_array($via, ['sms', 'wa'])
        ) {
            if ($via == 'sms') {
                Message::sendSMS($phone, $msg);
            } else if ($via == 'wa') {
                Message::sendWhatsapp($phone, $msg);
            }
        }
        return "$via: $msg";
    }

    public static function sendInvoice($cust, $trx)
    {
        global $config;
        $textInvoice = Lang::getNotifText('invoice_paid');
        $textInvoice = str_replace('[[company_name]]', $config['CompanyName'], $textInvoice);
        $textInvoice = str_replace('[[address]]', $config['address'], $textInvoice);
        $textInvoice = str_replace('[[phone]]', $config['phone'], $textInvoice);
        $textInvoice = str_replace('[[invoice]]', $trx['invoice'], $textInvoice);
        $textInvoice = str_replace('[[date]]', Lang::dateAndTimeFormat($trx['recharged_on'], $trx['recharged_time']), $textInvoice);
        if (!empty($trx['note'])) {
            $textInvoice = str_replace('[[note]]', $trx['note'], $textInvoice);
        }
        $gc = explode("-", $trx['method']);
        $textInvoice = str_replace('[[payment_gateway]]', trim($gc[0]), $textInvoice);
        $textInvoice = str_replace('[[payment_channel]]', trim($gc[1]), $textInvoice);
        $textInvoice = str_replace('[[type]]', $trx['type'], $textInvoice);
        $textInvoice = str_replace('[[plan_name]]', $trx['plan_name'], $textInvoice);
        $textInvoice = str_replace('[[plan_price]]',  Lang::moneyFormat($trx['price']), $textInvoice);
        $textInvoice = str_replace('[[name]]', $cust['fullname'], $textInvoice);
        $textInvoice = str_replace('[[note]]', $cust['note'], $textInvoice);
        $textInvoice = str_replace('[[user_name]]', $trx['username'], $textInvoice);
        $textInvoice = str_replace('[[user_password]]', $cust['password'], $textInvoice);
        $textInvoice = str_replace('[[username]]', $trx['username'], $textInvoice);
        $textInvoice = str_replace('[[password]]', $cust['password'], $textInvoice);
        $textInvoice = str_replace('[[expired_date]]', Lang::dateAndTimeFormat($trx['expiration'], $trx['time']), $textInvoice);
        $textInvoice = str_replace('[[footer]]', $config['note'], $textInvoice);

        if ($config['user_notification_payment'] == 'sms') {
            Message::sendSMS($cust['phonenumber'], $textInvoice);
        } else if ($config['user_notification_payment'] == 'wa') {
            Message::sendWhatsapp($cust['phonenumber'], $textInvoice);
        }
    }

    public static function sendRegistrationNotification($customer)
    {
        global $config;
        
        if(empty($customer['phonenumber']) || strlen($customer['phonenumber']) < 5){
            return "";
        }
        
        $textRegistration = Lang::getNotifText('user_registration');
        if(empty($textRegistration)) {
            return "";
        }
        
        $textRegistration = str_replace('[[company_name]]', $config['CompanyName'], $textRegistration);
        $textRegistration = str_replace('[[name]]', $customer['fullname'], $textRegistration);
        $textRegistration = str_replace('[[user_name]]', $customer['username'], $textRegistration);
        $textRegistration = str_replace('[[username]]', $customer['username'], $textRegistration);
        $textRegistration = str_replace('[[password]]', $customer['password'], $textRegistration);
        $textRegistration = str_replace('[[service_type]]', $customer['service_type'], $textRegistration);
        $textRegistration = str_replace('[[footer]]', $config['note'], $textRegistration);

        // Use the same notification setting as recharge process
        if ($config['user_notification_payment'] == 'sms') {
            Message::sendSMS($customer['phonenumber'], $textRegistration);
        } else if ($config['user_notification_payment'] == 'wa') {
            Message::sendWhatsapp($customer['phonenumber'], $textRegistration);
        }
        
        return $textRegistration;
    }

    /**
     * Get plan-specific template based on plan type
     * @param string $message_key The message key (e.g., 'expired', 'reminder_7_day')
     * @param string $plan_type The plan type ('Hotspot', 'PPPOE', etc.)
     * @return string The appropriate template
     */
    public static function getPlanSpecificTemplate($message_key, $plan_type = null)
    {
        global $config;
        
        // Load notification templates
        $notifications = self::loadNotificationTemplates();
        
        // If no plan type provided or template doesn't exist, return original message
        if (empty($plan_type) || !isset($notifications[$message_key])) {
            return $message_key;
        }
        
        // Check if it's a new structure with plan-specific templates
        if (is_array($notifications[$message_key])) {
            $plan_type_lower = strtolower($plan_type);
            
            // Try to get plan-specific template
            if (isset($notifications[$message_key][$plan_type_lower])) {
                return $notifications[$message_key][$plan_type_lower];
            }
            
            // Fallback to default template
            if (isset($notifications[$message_key]['default'])) {
                return $notifications[$message_key]['default'];
            }
        }
        
        // Fallback to original message for backward compatibility
        return $notifications[$message_key];
    }

    /**
     * Load notification templates from file
     * @return array Notification templates
     */
    public static function loadNotificationTemplates()
    {
        global $root_path;
        $notifications_file = $root_path . 'system/uploads/notifications.default.json';
        
        if (file_exists($notifications_file)) {
            $content = file_get_contents($notifications_file);
            $notifications = json_decode($content, true);
            return $notifications ?: [];
        }
        
        return [];
    }

    /**
     * Detect plan type from customer and package information
     * @param array $customer Customer information
     * @param string $package Package name
     * @return string|null Plan type
     */
    public static function detectPlanType($customer, $package)
    {
        // Try to get plan type from customer's service_type
        if (!empty($customer['service_type']) && in_array($customer['service_type'], ['Hotspot', 'PPPoE'])) {
            return $customer['service_type'];
        }
        
        // Try to detect from package name (basic detection)
        $package_lower = strtolower($package);
        if (strpos($package_lower, 'hotspot') !== false) {
            return 'Hotspot';
        } elseif (strpos($package_lower, 'pppoe') !== false) {
            return 'PPPOE';
        }
        
        return null;
    }
}