app/bundles/ChannelBundle/Event/ChannelEvent.php

<?php

namespace Mautic\ChannelBundle\Event;

use Mautic\ChannelBundle\Model\MessageModel;
use Mautic\CoreBundle\Event\CommonEvent;

class ChannelEvent extends CommonEvent
{
    /**
     * @var array
     */
    protected $channels = [];

    /**
     * @var array
     */
    protected $featureChannels = [];

    /**
     * Adds a submit action to the list of available actions.
     *
     * @param string $channel a unique identifier; it is recommended that it be namespaced if there are multiple entities in a channel  i.e. something.something
     * @param array  $config  Should be keyed by the feature it supports that contains an array of feature configuration options. i.e.
     *                        $config = [
     *                        MessageModel::CHANNEL_FEATURE => [
     *                        'lookupFormType'       => (optional) Form type class/alias for the channel lookup list,
     *                        'propertiesFormType'   => (optional) Form type class/alias for the channel properties if a lookup list is not used,
     *
     *                        'channelTemplate'      => (optional) template to inject UI/DOM into the bottom of the channel's tab
     *                        'formTheme'           => (optional) theme directory for custom form types
     *
     *                          ]
     *                       ]
     *
     * @return $this
     */
    public function addChannel($channel, array $config = [])
    {
        $this->channels[$channel] = $config;

        foreach ($config as $feature => $featureConfig) {
            $this->featureChannels[$feature][$channel] = $featureConfig;
        }

        return $this;
    }

    /**
     * Returns registered channels with their configs.
     *
     * @return array
     */
    public function getChannelConfigs()
    {
        return $this->channels;
    }

    /**
     * Returns repository name for the provided channel. Defaults to classic naming convention.
     *
     * @param string $channel
     *
     * @return string
     */
    public function getRepositoryName($channel)
    {
        if (isset($this->channels[$channel][MessageModel::CHANNEL_FEATURE]['repository'])) {
            return $this->channels[$channel][MessageModel::CHANNEL_FEATURE]['repository'];
        }

        // if not defined, try the classic naming convention
        $channel = ucfirst($channel);
        $class   = "\Mautic\\{$channel}Bundle\Entity\\{$channel}";
        \assert(class_exists($class));

        return $class;
    }

    /**
     * Returns the name of the column holding the channel name for the provided channel. Defaults to 'name'.
     *
     * @param string $channel
     *
     * @return string
     */
    public function getNameColumn($channel)
    {
        return $this->channels[$channel][MessageModel::CHANNEL_FEATURE]['nameColumn'] ?? 'name';
    }

    /**
     * @return array
     */
    public function getFeatureChannels()
    {
        return $this->featureChannels;
    }
}