$base_slug ) {
				$url .= '&sub=' . $slug;
			}
		} else {
			$url = 'admin.php?page=' . $slug;
		}

		if ( 'network' === $context || 'snippets-settings' === $slug ) {
			return network_admin_url( $url );
		} elseif ( 'admin' === $context ) {
			return admin_url( $url );
		} else {
			return self_admin_url( $url );
		}
	}

	/**
	 * Fetch the admin menu slug for a snippets menu
	 *
	 * @param int    $snippet_id Snippet ID.
	 * @param string $context    URL scheme to use.
	 *
	 * @return string The URL to the edit snippet page for that snippet.
	 */
	public function get_snippet_edit_url( $snippet_id, $context = 'self' ) {
		return add_query_arg(
			'id',
			absint( $snippet_id ),
			$this->get_menu_url( 'edit', $context )
		);
	}

	/**
	 * Determine whether the current user can perform actions on snippets.
	 *
	 * @return boolean Whether the current user has the required capability
	 * @since 2.8.6
	 */
	public function current_user_can() {
		return current_user_can( $this->get_cap() );
	}

	/**
	 * Retrieve the name of the capability required to manage sub-site snippets
	 *
	 * @return string
	 */
	public function get_cap_name() {
		return apply_filters( 'code_snippets_cap', 'manage_options' );
	}

	/**
	 * Retrieve the name of the capability required to manage network snippets
	 *
	 * @return string
	 */
	public function get_network_cap_name() {
		return apply_filters( 'code_snippets_network_cap', 'manage_network_options' );
	}

	/**
	 * Get the required capability to perform a certain action on snippets.
	 * Does not check if the user has this capability or not.
	 *
	 * If multisite, checks if *Enable Administration Menus: Snippets* is active
	 * under the *Settings > Network Settings* network admin menu
	 *
	 * @return string The capability required to manage snippets
	 * @since 2.0
	 */
	public function get_cap() {

		if ( is_multisite() ) {
			$menu_perms = get_site_option( 'menu_items', array() );

			/* If multisite is enabled and the snippet menu is not activated, restrict snippet operations to super admins only */
			if ( empty( $menu_perms['snippets'] ) ) {
				return $this->get_network_cap_name();
			}
		}

		return $this->get_cap_name();
	}

	/**
	 * Inject the safe mode query var into URLs
	 *
	 * @param string $url Original URL.
	 *
	 * @return string Modified URL.
	 */
	public function add_safe_mode_query_var( $url ) {

		if ( isset( $_REQUEST['snippets-safe-mode'] ) ) {
			return add_query_arg( 'snippets-safe-mode', (bool) $_REQUEST['snippets-safe-mode'], $url );
		}

		return $url;
	}

	/**
	 * Retrieve a list of available snippet types and their labels.
	 *
	 * @return array
	 */
	public static function get_types() {
		return apply_filters(
			'code_snippets_types',
			array(
				'php'  => __( 'Functions', 'code-snippets' ),
				'html' => __( 'Content', 'code-snippets' ),
				'css'  => __( 'Styles', 'code-snippets' ),
				'js'   => __( 'Scripts', 'code-snippets' ),
			)
		);
	}

	/**
	 * Determine whether a snippet type is Pro-only.
	 *
	 * @param string $type Snippet type name.
	 *
	 * @return bool
	 */
	public static function is_pro_type( $type ) {
		return 'css' === $type || 'js' === $type;
	}

	/**
	 * Retrieve the description for a particular snippet type.
	 *
	 * @param string $type Snippet type name.
	 *
	 * @return string
	 */
	public function get_type_description( $type ) {
		$descriptions = array(
			'php'  => __( 'Function snippets are run on your site as if there were in a plugin or theme functions.php file.', 'code-snippets' ),
			'html' => __( 'Content snippets are bits of reusable PHP and HTML content that can be inserted into posts and pages.', 'code-snippets' ),
			'css'  => __( 'Style snippets are written in CSS and loaded in the admin area or on the site front-end, just like the theme style.css.', 'code-snippets' ),
			'js'   => __( 'Script snippets are loaded on the site front-end in a JavaScript file, either in the head or body sections.', 'code-snippets' ),
		);

		$descriptions = apply_filters( 'code_snippets/plugins/type_descriptions', $descriptions );

		return isset( $descriptions[ $type ] ) ? $descriptions[ $type ] : '';
	}
}