Notification events

Events for the notification system: sending, modifying, registering channels.

Built-in channels

MiniShop3 includes two notification channels out of the box:

Channel	Class	Description
`email`	`EmailChannel`	Sends via MODX modMail
`telegram`	`TelegramChannel`	Sends via Telegram Bot API

Email channel

Uses standard MODX modMail. Templates are configured via chunks.

Telegram channel

Sends messages via Telegram Bot API. Requires settings:

ms3_telegram_bot_token — bot token
ms3_telegram_manager_chat_id — recipient Chat ID

Telegram limitation

A Telegram bot cannot start a conversation with a user. The user must send the first message to the bot. So Telegram notifications only work for managers who have set their Chat ID in advance.

Sending Telegram notifications to customers

To send Telegram notifications to customers you need to:

Get customer consent for notifications
Link the customer’s Telegram account to their store profile
Store the customer’s Chat ID

Step 1: Add a field for Chat ID

Add a field to msCustomer to store Chat ID:

sql

ALTER TABLE modx_ms3_customers ADD COLUMN telegram_chat_id VARCHAR(50) NULL;

Or use Extra Fields in MiniShop3 settings.

Step 2: Create a bot with Deep Linking

Use Telegram Deep Linking to link the account:

php

<?php
// Generate unique link for linking
$customerId = $msCustomer->get('id');
$token = hash('sha256', $customerId . $modx->getOption('ms3_snippet_token_secret'));
$linkCode = base64_encode($customerId . ':' . substr($token, 0, 16));

$botUsername = 'YourShopBot';
$telegramLink = "https://t.me/{$botUsername}?start={$linkCode}";

Step 3: Handle /start on the bot side

The bot must handle the start parameter and save the Chat ID:

php

<?php
// Bot webhook handler (simplified)
$update = json_decode(file_get_contents('php://input'), true);
$message = $update['message'] ?? null;

if ($message && str_starts_with($message['text'], '/start ')) {
    $linkCode = substr($message['text'], 7);
    $decoded = base64_decode($linkCode);
    [$customerId, $tokenPart] = explode(':', $decoded);

    $expectedToken = hash('sha256', $customerId . $modx->getOption('ms3_snippet_token_secret'));
    if (substr($expectedToken, 0, 16) === $tokenPart) {
        $customer = $modx->getObject(\MiniShop3\Model\msCustomer::class, $customerId);
        if ($customer) {
            $customer->set('telegram_chat_id', $message['chat']['id']);
            $customer->save();
            // Send confirmation
            sendTelegramMessage($message['chat']['id'], 'Notifications enabled');
        }
    }
}

Step 4: Plugin to send notifications to the customer

php

<?php
/**

 * Plugin: Telegram notifications to customers
 * Events: msOnChangeOrderStatus

 */

switch ($modx->event->name) {
    case 'msOnChangeOrderStatus':
        $order = $scriptProperties['order'];
        $newStatus = $scriptProperties['status'];

        $customer = $order->getOne('Customer');
        if (!$customer) return;

        $chatId = $customer->get('telegram_chat_id');
        if (empty($chatId)) return;

        $statusName = $modx->lexicon($newStatus->get('name'));
        $orderNum = $order->get('num');
        $message = "Order #{$orderNum}\nStatus: {$statusName}";

        $botToken = $modx->getOption('ms3_telegram_bot_token');
        $url = "https://api.telegram.org/bot{$botToken}/sendMessage";
        $ch = curl_init($url);
        curl_setopt_array($ch, [
            CURLOPT_POST => true,
            CURLOPT_POSTFIELDS => ['chat_id' => $chatId, 'text' => $message, 'parse_mode' => 'HTML'],
            CURLOPT_RETURNTRANSFER => true,
        ]);
        curl_exec($ch);
        curl_close($ch);
        break;
}

Step 5: Link button in customer account

Add to the customer profile template:

fenom

{if $customer.telegram_chat_id}
    <div class="alert alert-success">
        Telegram notifications enabled
    </div>
{else}
    <a href="{$telegramLink}" class="btn btn-primary" target="_blank">
        Enable Telegram notifications
    </a>
{/if}

Alternative

Instead of your own bot, you can use third-party services (SendPulse, Unisender, etc.) that provide Telegram API and handle subscriptions.

msOnBeforeSendNotification

Fired before sending a notification. Lets you modify data or cancel sending.

Parameters

Parameter	Type	Description
`notification`	`Notification`	Notification instance
`recipient`	`array` (by reference)	Recipient payload
`recipientType`	`string`	`customer` or `manager`
`channels`	`string[]` (by reference)	Channel names, e.g. `['email', 'telegram']`

Aborting the operation

If the plugin returns non-empty output, sending is cancelled:

Use return false or return 'cancel'. The event uses EventGate::invokeRaw().

php

<?php
switch ($modx->event->name) {
    case 'msOnBeforeSendNotification':
        $recipient = $scriptProperties['recipient'];

        // Disallow sending at night
        $hour = (int)date('G');
        if ($hour >= 23 || $hour < 8) {
            return false;
        }

        // Block temporary emails
        if (!empty($recipient['email'])) {
            $domain = substr($recipient['email'], strpos($recipient['email'], '@') + 1);
            if (in_array($domain, ['tempmail.com', 'throwaway.com'], true)) {
                return 'cancel';
            }
        }
        break;
}

Modifying via returnedValues

php

<?php
switch ($modx->event->name) {
    case 'msOnBeforeSendNotification':
        $values = &$modx->event->returnedValues;
        $values['recipient'] = array_replace(
            $scriptProperties['recipient'],
            ['email' => 'ops@example.com']
        );
        $values['channels'] = ['email'];
        break;
}

msOnAfterSendNotification

Fired after sending a notification (success or failure).

Parameters

Parameter	Type	Description
`notification`	`NotificationInterface`	Notification object
`channel`	`ChannelInterface`	Channel
`recipient`	`array`	Recipient data
`success`	`bool`	Send result
`error`	`string \| null`	Error message (if any)

Example

php

<?php
switch ($modx->event->name) {
    case 'msOnAfterSendNotification':
        $notification = $scriptProperties['notification'];
        $channel = $scriptProperties['channel'];
        $recipient = $scriptProperties['recipient'];
        $success = $scriptProperties['success'];
        $error = $scriptProperties['error'];

        // Log
        if ($success) {
            $modx->log(modX::LOG_LEVEL_INFO, sprintf(
                '[Notification] Sent: %s → %s (%s)',
                get_class($notification),
                $recipient['email'] ?? $recipient['phone'] ?? 'unknown',
                get_class($channel)
            ));
        } else {
            $modx->log(modX::LOG_LEVEL_ERROR, sprintf(
                '[Notification] Error: %s → %s: %s',
                get_class($notification),
                $recipient['email'] ?? $recipient['phone'] ?? 'unknown',
                $error
            ));
        }
        break;
}

Retry on failure

php

<?php
switch ($modx->event->name) {
    case 'msOnAfterSendNotification':
        $success = $scriptProperties['success'];

        if (!$success) {
            $notification = $scriptProperties['notification'];
            $recipient = $scriptProperties['recipient'];

            // Add to retry queue
            $queue = $modx->newObject('msNotificationQueue', [
                'notification_class' => get_class($notification),
                'notification_data' => json_encode($notification->getContext()),
                'recipient' => json_encode($recipient),
                'retry_count' => 0,
                'scheduled_at' => date('Y-m-d H:i:s', strtotime('+5 minutes')),
            ]);
            $queue->save();
        }
        break;
}

msOnRegisterNotificationChannels

Fired when registering notification channels. Lets you add custom channels.

Parameters

Parameter	Type	Description
`manager`	`NotificationManager`	Notification manager

Registering a custom channel

php

<?php
switch ($modx->event->name) {
    case 'msOnRegisterNotificationChannels':
        /** @var \MiniShop3\Notifications\NotificationManager $manager */
        $manager = $scriptProperties['manager'];

        // Register Telegram channel
        $manager->registerChannel('telegram', function($modx) {
            return new MyTelegramChannel($modx);
        });

        // Register Push channel
        $manager->registerChannel('push', function($modx) {
            return new MyPushChannel($modx);
        });
        break;
}

Custom channel example

php

<?php
namespace MyComponent\Notifications;

use MiniShop3\Notifications\Channels\ChannelInterface;
use MiniShop3\Notifications\NotificationInterface;
use MODX\Revolution\modX;

class TelegramChannel implements ChannelInterface
{
    protected modX $modx;
    protected string $botToken;

    public function __construct(modX $modx)
    {
        $this->modx = $modx;
        $this->botToken = $modx->getOption('my_telegram_bot_token');
    }

    public function send(NotificationInterface $notification, array $recipient): bool
    {
        $chatId = $recipient['telegram_id'] ?? null;
        if (!$chatId) return false;

        $message = $notification->toTelegram($recipient);
        $url = "https://api.telegram.org/bot{$this->botToken}/sendMessage";
        $data = [
            'chat_id' => $chatId,
            'text' => $message,
            'parse_mode' => 'HTML',
        ];

        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $result = curl_exec($ch);
        curl_close($ch);

        return json_decode($result, true)['ok'] ?? false;
    }
}

Full example: notification analytics

php

<?php
/**

 * Plugin: Notification analytics
 * Events: msOnBeforeSendNotification, msOnAfterSendNotification

 */

switch ($modx->event->name) {

    case 'msOnBeforeSendNotification':
        $notification = $scriptProperties['notification'];
        $modx->eventData['notification_start'] = microtime(true);
        break;

    case 'msOnAfterSendNotification':
        $notification = $scriptProperties['notification'];
        $channel = $scriptProperties['channel'];
        $recipient = $scriptProperties['recipient'];
        $success = $scriptProperties['success'];
        $error = $scriptProperties['error'];

        $startTime = $modx->eventData['notification_start'] ?? microtime(true);
        $duration = round((microtime(true) - $startTime) * 1000, 2);

        $stats = $modx->newObject('msNotificationStats', [
            'notification_type' => get_class($notification),
            'channel' => get_class($channel),
            'recipient_type' => $recipient['type'] ?? 'unknown',
            'success' => $success ? 1 : 0,
            'error' => $error,
            'duration_ms' => $duration,
            'createdon' => date('Y-m-d H:i:s'),
        ]);
        $stats->save();

        if (!$success) {
            $errorCount = $modx->getCount('msNotificationStats', [
                'success' => 0,
                'createdon:>=' => date('Y-m-d H:i:s', strtotime('-1 hour')),
            ]);
            if ($errorCount > 10) {
                $modx->log(modX::LOG_LEVEL_ERROR,
                    "[Notifications] ALERT: {$errorCount} errors in the last hour!"
                );
            }
        }
        break;
}

Snippets

Manager interface

Manager cookbooks

Frontend interface

Development

Events

Web API

Backend API

Notification events

Built-in channels

Email channel

Telegram channel

Sending Telegram notifications to customers

Step 1: Add a field for Chat ID

Step 2: Create a bot with Deep Linking

Step 3: Handle /start on the bot side

Step 4: Plugin to send notifications to the customer

Step 5: Link button in customer account

msOnBeforeSendNotification

Parameters

Aborting the operation

Modifying via returnedValues

msOnAfterSendNotification

Parameters

Example

Retry on failure

msOnRegisterNotificationChannels

Parameters

Registering a custom channel

Custom channel example

Full example: notification analytics

Events

Web API

Backend API

Notification events ​

Built-in channels ​

Email channel ​

Telegram channel ​

Sending Telegram notifications to customers ​

Step 1: Add a field for Chat ID ​

Step 2: Create a bot with Deep Linking ​

Step 3: Handle /start on the bot side ​

Step 4: Plugin to send notifications to the customer ​

Step 5: Link button in customer account ​

msOnBeforeSendNotification ​

Parameters ​

Aborting the operation ​

Modifying via returnedValues ​

msOnAfterSendNotification ​

Parameters ​

Example ​

Retry on failure ​

msOnRegisterNotificationChannels ​

Parameters ​

Registering a custom channel ​

Custom channel example ​

Full example: notification analytics ​

Notification events

Built-in channels

Email channel

Telegram channel

Sending Telegram notifications to customers

Step 1: Add a field for Chat ID

Step 2: Create a bot with Deep Linking

Step 3: Handle /start on the bot side

Step 4: Plugin to send notifications to the customer

Step 5: Link button in customer account

msOnBeforeSendNotification

Parameters

Aborting the operation

Modifying via returnedValues

msOnAfterSendNotification

Parameters

Example

Retry on failure

msOnRegisterNotificationChannels

Parameters

Registering a custom channel

Custom channel example

Full example: notification analytics