<?php


namespace ColibriWP\Theme;


use ColibriWP\Theme\Core\Hooks;
use ColibriWP\Theme\Core\Utils;

class HeaderPresets {

    private $headers_data = array();

    public function __construct() {
        $this->loadHeadersData();
        Hooks::colibri_add_filter( 'customizer_js_data',
            array( $this, 'addHeadersToJSData' ) );
    }

    public function loadHeadersData() {

        if ( ! file_exists( get_template_directory() . "/inc/customizer-headers.php" ) ) {
            return;
        }

        $assets_base_url = get_template_directory_uri() . "/resources/header-presets";

        $headers = require_once get_template_directory() . "/inc/customizer-headers.php";
        foreach ( $headers as $index => $header ) {
            $image = Utils::pathGet( $header, 'image', '' );
            $data  = Utils::pathGet( $header, 'data', array() );

            foreach ( $data as $data_index => $value ) {

                $decoded_value = $this->maybeJSONDecode( $value );

                if ( ( is_array( $value ) || $decoded_value !== $value ) && is_array( $decoded_value ) ) {
                    $decoded_value       = $this->sprintfRecursive( $decoded_value, $assets_base_url );
                    $data[ $data_index ] = urlencode( json_encode( $decoded_value ) );
                } else {
                    if ( is_string( $value ) ) {
                        $data[ $data_index ] = sprintf( $value, $assets_base_url );
                    }
                }

            }

            $fallback_keys = array(
                'header_front_page.icon_list.localProps.iconList',
                'header_front_page.social_icons.localProps.icons'
            );

            foreach ( $fallback_keys as $fallback_key ) {
                $data[ $fallback_key ] = Defaults::get( $fallback_key );
            }

            $headers[ $index ] = array(
                'image' => sprintf( $image, "{$assets_base_url}/previews" ),
                'data'  => $data
            );

            $this->headers_data = $headers;
        }
    }

    private function maybeJSONDecode( $value ) {
        if ( is_string( $value ) && strlen( trim( $value ) ) ) {
            // try to decode an url encoded value
            $maybe_value = json_decode( urldecode( $value ), true );

            if ( json_last_error() === JSON_ERROR_NONE ) {
                return $maybe_value;
            } else {
                // try to decode the value directly
                if ( is_string( $value ) ) {
                    $maybe_value = json_decode( $value, true );
                    if ( json_last_error() === JSON_ERROR_NONE ) {
                        return $maybe_value;
                    }
                }
            }

        }

        return $value;
    }

    public function sprintfRecursive( $array, $arg ) {

        if ( ! is_array( $array ) ) {
            if ( is_string( $array ) ) {
                return sprintf( $array, $arg );
            }

            return $array;
        }

        foreach ( $array as $index => $value ) {
            $array[ $index ] = $this->sprintfRecursive( $value, $arg );
        }

        return $array;
    }

    public function addHeadersToJSData( $data ) {
        $data['headers'] = $this->headers_data;

        return $data;
    }
}