Ip\Internal\Design\Model::installThemePlugin PHP Method

    public function installThemePlugin($pluginName)
    {
        $toDir = ipFile('Plugin/' . $pluginName . '/');
        $fromDir = ipThemeFile('Plugin/' . $pluginName . '/');
        if (is_dir($toDir)) {
            throw new \Ip\Exception('This plugin has been already installed');
        }
        if (!is_dir($fromDir)) {
            throw new \Ip\Exception('Plugin is missing.');
        }
        $pluginConfiguration = \Ip\Internal\Plugins\Service::parsePluginConfigFile($fromDir);
        if (!$pluginConfiguration) {
            throw new \Ip\Exception('Can\'t read plugin configuration file.');
        }
        if (!is_writable(ipFile('Plugin/'))) {
            throw new \Ip\Exception('Please make plugin dir writable (' . esc($this->getThemePluginDir()) . ')');
        }
        $helper = Helper::instance();
        $helper->cpDir($fromDir, $toDir);
        \Ip\Internal\Plugins\Service::activatePlugin($pluginName);
    }