Sindbad~EG File Manager

<?php
namespace Mediavine\Grow;

class Settings extends \Social_Pug {

	/** @var null  */
	private static $instance = null;

	/** @var string  */
	private $no_setting_flag = 'NO_SETTING';

	/**
	 * Get instance of Class.
	 *
	 * @return Settings
	 */
	public static function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
			self::$instance->init();
		}

		return self::$instance;
	}

	/**
	 * Set up hooks.
	 */
	public function init() {
		// @TODO: Remove kludge for getting rid of old Grow network name
		$tools = [ 'sticky_bar', 'sidebar', 'mobile', 'follow_widget', 'content', 'pop_up', 'email_save_this' ];
		foreach ( $tools as $tool_slug ) {
			add_filter( 'mv_grow_setting_dpsp_location_' . $tool_slug, [ $this, 'covert_grow_me_label' ] );
		}
	}

	/**
	 * Internal get settings implementation,Allows the output to be filtered, and set via Query Parameters for QA.
	 *
	 * @param string $slug
	 * @param mixed $default
	 * @return mixed
	 */
	private function get_setting_internal( $slug, $default = [] ) {
		$setting = get_option( $slug, $default );
		$setting = apply_filters( 'mv_grow_setting_' . $slug, $setting );
		if ( apply_filters( 'mv_grow_flag_allow_settings_query', false ) ) {
			// For QA purposes, allow settings to be programmatically set via query params, this code should only be reachable in development
			$parsed_setting = $this->parse_setting_from_query( $slug );
			if ( $parsed_setting !== $this->no_setting_flag ) {
				if ( ! is_array( $setting ) ) {
					$setting = $parsed_setting;
				} else {
					$setting = array_merge( $setting, $parsed_setting );
				}
			}
		}

		return $setting;
	}

	/**
	 * Public facing static get setting method, uses the same function signature as the native WordPress get option for easy replacement.
	 *
	 * @param string $slug
	 * @param array $default
	 * @return mixed
	 */
	public static function get_setting( $slug, $default = [] ) {
		$settings_instance = self::get_instance();
		return $settings_instance->get_setting_internal( $slug, $default );
	}

	/**
	 * Get settings values from the Get Query Parameter Warning, this path should not be able to be reached in production.
	 *
	 * @param string $slug Setting slug to look for
	 * @return array|mixed
	 */
	public function parse_setting_from_query( $slug ) {
		$setting = filter_input( INPUT_GET, $slug );
		return ! empty( $setting ) ? $setting : $this->no_setting_flag;
	}

	/**
	 * Convert an old Grow.me label to a new Grow label when reading from settings
	 * @param mixed $settings Ideally an Array of settings for a location
	 * @TODO: Remove this because it's kludgey
	 * @return mixed
	 */
	public function covert_grow_me_label( $settings ) {
		$grow_label = $settings['networks']['grow']['label'] ?? false;
		if ( 'Grow.me' === $grow_label ) {
			$settings['networks']['grow']['label'] = 'Grow';
		}
		return $settings;
	}
}