<?php
/**
 * Customizer block.
 *
 * @package ghostkit
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * Class GhostKit_Customizer_Block
 */
class GhostKit_Customizer_Block {
    /**
     * Custom options.
     *
     * @var array
     */
    public $custom_options = array();

    /**
     * GhostKit_Customizer_Block constructor.
     */
    public function __construct() {
        add_action( 'template_redirect', array( $this, 'maybe_find_options' ) );
        add_action( 'init', array( $this, 'register_meta' ) );
        add_action( 'customize_register', array( $this, 'parse_customizer_controls' ), 99999 );
    }

    /**
     * Try to find meta data to replace options.
     */
    public function maybe_find_options() {
        $this->custom_options = json_decode( urldecode( get_post_meta( get_queried_object_id(), 'ghostkit_customizer_options', true ) ), true );

        if ( $this->custom_options && ! empty( $this->custom_options ) ) {
            foreach ( $this->custom_options as $opt ) {
                add_filter( ( isset( $opt['type'] ) ? $opt['type'] : 'theme_mod' ) . '_' . $opt['id'], array( $this, 'replace_option' ) );
            }
        }
    }

    /**
     * Replace option value.
     *
     * @param mixed $val - current option value.
     *
     * @return mixed
     */
    public function replace_option( $val ) {
        if ( $this->custom_options && ! empty( $this->custom_options ) ) {
            $this_id = current_filter();

            foreach ( $this->custom_options as $opt ) {
                $id = ( isset( $opt['type'] ) ? $opt['type'] : 'theme_mod' ) . '_' . $opt['id'];
                if ( $id === $this_id ) {
                    $val = $opt['value'];
                }
            }
        }
        return $val;
    }

    /**
     * Register meta.
     */
    public function register_meta() {
        register_meta( 'post', 'ghostkit_customizer_options', array(
            'show_in_rest' => true,
            'single'       => true,
            'type'         => 'string',
        ) );
    }

    /**
     * Prepare customizer data and save it to the options for further use.
     *
     * @param {object} $wp_customize - customizer data.
     */
    public function parse_customizer_controls( $wp_customize ) {
        $settings = array();
        foreach ( $wp_customize->settings() as $setting ) {
            if ( isset( $setting->type ) && ( 'theme_mod' === $setting->type || 'option' === $setting->type ) ) {
                $control = $wp_customize->get_control( $setting->id );

                // get section and panel.
                $section = false;
                $panel = false;
                if ( isset( $control->section ) ) {
                    $section_object = $wp_customize->get_section( $control->section );
                    if ( $section_object ) {
                        $section = array(
                            'id'          => isset( $section_object->id ) ? $section_object->id : false,
                            'title'       => isset( $section_object->title ) ? $section_object->title : false,
                            'description' => isset( $section_object->description ) ? $section_object->description : false,
                        );
                        if ( isset( $section_object->panel ) ) {
                            $panel_object = $wp_customize->get_panel( $section_object->panel );
                            if ( $panel_object ) {
                                $panel = array(
                                    'id'          => isset( $panel_object->id ) ? $panel_object->id : false,
                                    'title'       => isset( $panel_object->title ) ? $panel_object->title : false,
                                    'description' => isset( $panel_object->description ) ? $panel_object->description : false,
                                );
                            }
                        }
                    }
                }

                // get control data.
                $settings[] = array(
                    'id'           => $setting->id,
                    'type'         => $setting->type,
                    'default'      => $setting->default,
                    'section'      => $section,
                    'panel'        => $panel,
                    'label'        => isset( $control->label ) ? $control->label : false,
                    'description'  => isset( $control->description ) ? $control->description : false,
                    'choices'      => isset( $control->choices ) ? $control->choices : false,
                    'control_type' => isset( $control->type ) ? $control->type : false,
                );
            }
        }

        update_option( 'ghostkit_customizer_fields', $settings );
    }
}
new GhostKit_Customizer_Block();