<?php

class IGthemes_Customizer_Reset {
        /**
         * @var IGthemes_Customizer_Reset
         */
        private static $instance = null;

        /**
         * @var WP_Customize_Manager
         */
        private $wp_customize;

        public static function get_instance() {
            if ( null === self::$instance ) {
                self::$instance = new self();
            }

            return self::$instance;
        }

        private function __construct() {
            add_action( 'customize_controls_print_scripts', array( $this, 'customize_controls_print_scripts' ) );
            add_action( 'wp_ajax_customizer_reset', array( $this, 'ajax_customizer_reset' ) );
            add_action( 'customize_register', array( $this, 'customize_register' ) );
        }

        public function customize_controls_print_scripts() {
            wp_enqueue_script( 'igthemes-customizer-reset',  get_template_directory_uri() . '/core-framework/options/js/customizer-reset.js', array( 'jquery' ), '20150120' );
            wp_localize_script( 'igthemes-customizer-reset', '_IGthemesCustomizerReset', array(
                'reset'   => __( 'Reset', 'boxed-wp' ),
                'confirm' => __( "Attention! This will remove all customizations ever made via customizer to this theme!\n\nThis action is irreversible!", 'boxed-wp' ),
                'nonce'   => array(
                    'reset' => wp_create_nonce( 'customizer-reset' ),
                )
            ) );
        }

        /**
         * Store a reference to `WP_Customize_Manager` instance
         *
         * @param $wp_customize
         */
        public function customize_register( $wp_customize ) {
            $this->wp_customize = $wp_customize;
        }

        public function ajax_customizer_reset() {
            if ( ! $this->wp_customize->is_preview() ) {
                wp_send_json_error( 'not_preview' );
            }

            if ( ! check_ajax_referer( 'customizer-reset', 'nonce', false ) ) {
                wp_send_json_error( 'invalid_nonce' );
            }

            $this->reset_customizer();

            wp_send_json_success();
        }

        public function reset_customizer() {
            $settings = $this->wp_customize->settings();

            // remove theme_mod settings registered in customizer
            foreach ( $settings as $setting ) {
                if ( 'theme_mod' == $setting->type ) {
                    remove_theme_mod( $setting->id );
                }
                if ( 'option' == $setting->type ) {
                    global $igthemes_option;
                    delete_option($igthemes_option);
                }
            }
        }
    }

IGthemes_Customizer_Reset::get_instance();