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✏️ Editing: SystemSetting.php

<?php
/**
 * Matomo - free/libre analytics platform
 *
 * @link https://matomo.org
 * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
 *
 */

namespace Piwik\Settings\Plugin;

use Piwik\Config;
use Piwik\Container\StaticContainer;
use Piwik\Piwik;
use Piwik\Settings\Setting;

/**
 * Describes a system wide setting. Only the Super User can change this type of setting by default and
 * the value of this setting will affect all users.
 *
 * See {@link \Piwik\Settings\Setting}.
 *
 * @api
 */
class SystemSetting extends Setting
{
    /**
     * Constructor.
     *
     * @param string $name The setting's persisted name.
     * @param mixed $defaultValue  Default value for this setting if no value was specified.
     * @param string $type Eg an array, int, ... see TYPE_* constants
     * @param string $pluginName The name of the plugin the system setting belongs to.
     */
    public function __construct($name, $defaultValue, $type, $pluginName)
    {
        parent::__construct($name, $defaultValue, $type, $pluginName);

$factory = StaticContainer::get('Piwik\Settings\Storage\Factory');
        $this->storage = $factory->getPluginStorage($this->pluginName, $userLogin = '');
    }

/**
     * Returns `true` if this setting is writable for the current user, `false` if otherwise. In case it returns
     * writable for the current user it will be visible in the Plugin settings UI.
     *
     * @return bool
     */
    public function isWritableByCurrentUser()
    {
        if ($this->hasConfigValue()) {
            return false;
        }

if (isset($this->hasWritePermission)) {
            return $this->hasWritePermission;
        }

// performance improvement, do not detect this in __construct otherwise likely rather "big" query to DB.
        $this->hasWritePermission = Piwik::hasUserSuperUserAccess();

return $this->hasWritePermission;
    }

/**
     * @inheritdoc
     */
    public function getValue()
    {
        $defaultValue = parent::getValue(); // we access value first to make sure permissions are checked

$configValue = $this->getValueFromConfig();

if (isset($configValue)) {
            $defaultValue = $configValue;
            settype($defaultValue, $this->type);
        }

return $defaultValue;
    }

private function hasConfigValue()
    {
        $value = $this->getValueFromConfig();
        return isset($value);
    }

private function getValueFromConfig()
    {
        $config = Config::getInstance()->{$this->pluginName};

if (!empty($config) && array_key_exists($this->name, $config)) {
            return $config[$this->name];
        }
    }

}

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