MODX - CampaignMonitor hook for FormIt

campaignmonitor.snippet.php

<?php
// Clone https://github.com/campaignmonitor/createsend-php into packages/campaignmonitor
require_once MODX_BASE_PATH . 'packages/campaignmonitor/csrest_subscribers.php';
//require_once MODX_BASE_PATH . 'packages/campaignmonitor/csrest_general.php';

// API key for CampaignMonitor
$auth = array('api_key' => 'YOUR_API_KEY');

// Initialize subscribers
$wrap = new CS_REST_Subscribers('YOUR_CLIENT_ID', $auth);

// Define prefix
$formID = $modx->resource->get('id');
$prefix = 'fb' . $formID . '-';

// Collect input from form fields
$name = $hook->getValue($prefix . 'name');
$email = $hook->getValue($prefix . 'email');
$duration = $hook->getValue($prefix . 'duration');
$quantity = $hook->getValue($prefix . 'quantity');

// Format values for CM
$duration = str_replace(',','.',$duration); // CM uses . to separate decimals
$quantity = number_format($quantity,0,'.','');

// Check if email address is not subscribed already
$result = $wrap->get($email, true);

//$modx->log(modX::LOG_LEVEL_ERROR, '[CampaignMonitor] Name: ' . $name);
//$modx->log(modX::LOG_LEVEL_ERROR, '[CampaignMonitor] Email: ' . $email);
//$modx->log(modX::LOG_LEVEL_ERROR, '[CampaignMonitor] Duration: ' . $duration);
//$modx->log(modX::LOG_LEVEL_ERROR, '[CampaignMonitor] Quantity: ' . $quantity);
//return true;

// Add as subscriber
if (!$result->was_successful()) {
    $addSubscriber = $wrap->add(array(
        'Name' => $name,
        'EmailAddress' => $email,
        'CustomFields' => array(
            array(
                'Key' => 'duration',
                'Value' => $duration
            ),
            array(
                'Key' => 'quantity',
                'Value' => $quantity
            )
        ),
        'ConsentToTrack' => 'yes',
        'Resubscribe' => true
    ));
    
    // Send email to admin on failure
    if (!$addSubscriber->was_successful()) {
        $modx->log(modX::LOG_LEVEL_ERROR, '[CampaignMonitor] Error adding subscriber: ' . $email);
        //$modx->log(modX::LOG_LEVEL_ERROR, '[CampaignMonitor] ' . var_dump($result->response));

        $message = "This email address could not be added: ${email}";
        //$message .= "Error dump: " . var_dump($result->response);

        $modx->getService('mail', 'mail.modPHPMailer');
        $modx->mail->set(modMail::MAIL_BODY,$message);
        $modx->mail->set(modMail::MAIL_FROM,'mail@YOURWEBSITE.com');
        $modx->mail->set(modMail::MAIL_FROM_NAME,'YOUR WEBSITE');
        $modx->mail->set(modMail::MAIL_SUBJECT,'[CampaignMonitor] Error adding subscriber');
        $modx->mail->address('to','hugo@websitelikethis.com');
        $modx->mail->address('reply-to','hugo@websitelikethis.com');
        $modx->mail->setHTML(true);
        if (!$modx->mail->send()) {
            $modx->log(modX::LOG_LEVEL_ERROR,'An error occurred while trying to send the email: '.$modx->mail->mailer->ErrorInfo);
        }
        $modx->mail->reset();

        return false;
    }
}

return true;