<?php

if( !class_exists(\'SiteOrigin_Installer_Theme_Admin\') ) {
    class SiteOrigin_Installer_Theme_Admin {

        function __construct(){
            add_action( \'admin_menu\', array( $this, \'add_admin_page\' ) );
            add_action( \'admin_menu\', array( $this, \'add_admin_sub_page\' ), 15 );
            add_action( \'admin_enqueue_scripts\', array( $this, \'enqueue_scripts\' ), 15 );
            add_action( \'wp_ajax_so_installer_theme_headers\', array( $this, \'theme_headers_action\' ) );
        }

        static function single(){
            static $single;
            if( empty($single) ) {
                $single = new SiteOrigin_Installer_Theme_Admin();
            }

            return $single;
        }

        /**
         * Add the theme admin page
         */
        function add_admin_page() {
            if ( empty ( $GLOBALS[\'admin_page_hooks\'][\'siteorigin\'] ) ) {
                add_menu_page(
                    __( \'SiteOrigin\', \'siteorigin-installer\' ),
                    __( \'SiteOrigin\', \'siteorigin-installer\' ),
                    false,
                    \'siteorigin\',
                    false,
                    plugin_dir_url( __FILE__ ) . \'/img/icon.svg\',
                    66
                );
            }
        }

        function add_admin_sub_page(){
            add_submenu_page(
                \'siteorigin\',
                __(\'Install Themes\', \'siteorigin-installer\'),
                __(\'Install Themes\', \'siteorigin-installer\'),
                \'install_themes\',
                \'siteorigin-themes-installer\',
                array( $this, \'display_themes_page\' )
            );
        }

        /**
         * @param $prefix
         */
        function enqueue_scripts( $prefix ){
            if( $prefix !== \'siteorigin_page_siteorigin-themes-installer\' ) return;
            wp_enqueue_style( \'siteorigin-installer-themes\', plugin_dir_url(__FILE__) . \'/css/themes.css\', array( ), SITEORIGIN_INSTALLER_VERSION );
            wp_enqueue_script( \'siteorigin-installer-themes\', plugin_dir_url(__FILE__) . \'/js/themes.js\', array( \'jquery\' ), SITEORIGIN_INSTALLER_VERSION );
        }

        /**
         * Display the theme admin page
         */
        function display_themes_page(){

            if( !empty( $_GET[\'install_theme\'] ) && !empty( $_GET[\'theme_version\'] ) ) {
                // The user is installing a theme
                $this->display_install_page();
                return;
            }

            $themes = SiteOrigin_Installer::single()->registered_themes();
            $latest_versions = get_transient( \'siteorigin_installer_theme_versions\' );
            if( empty($latest_versions) ) $latest_versions = array();
            $updated = false;

            foreach( $themes as $slug => $theme ) {
                if( !empty( $latest_versions[$slug] ) ) continue;

                $version = SiteOrigin_Installer::single()->get_theme_version( $slug );
                if( $version === false ) continue;

                $latest_versions[$slug] = $version;
                $updated = true;
            }

            if( $updated ) {
                // Cache for 12 hours
                set_transient( \'siteorigin_installer_theme_versions\', $latest_versions, 43200 );
            }

            // We need to know the current theme
            $current_theme = wp_get_theme();

            // Increase the current themes weight
            foreach( $themes as $slug => $theme ) {
                if( $slug == $current_theme->get_stylesheet() ) $themes[$slug][\'weight\'] = 999;
            }

            // Sort the themes by weight
            uasort( $themes, array( $this, \'sort_theme_compare\' ) );

            include plugin_dir_path( __FILE__ ) . \'/tpl/themes.php\';
        }

        /**
         * Comparison function for sorting
         *
         * @param $a
         * @param $b
         *
         * @return int
         */
        function sort_theme_compare( $a, $b ){
            if( empty($a[\'weight\']) || empty($b[\'weight\']) ) return 0;
            return $a[\'weight\'] < $b[\'weight\'] ? 1 : -1;
        }

        /**
         * Display the plugin install page
         */
        function display_install_page(){
            check_admin_referer( \'siteorigin-install-theme\' );
            require_once ABSPATH . \'wp-admin/includes/class-wp-upgrader.php\'; // Need for upgrade classes

            $slug = !empty( $_GET[\'install_theme\'] ) ? $_GET[\'install_theme\'] : false;
            $version = !empty( $_GET[\'theme_version\'] ) ? $_GET[\'theme_version\'] : false;

            if( empty($slug) || empty($version) ) {
                wp_die( __(\'Error installing theme\', \'siteorigin-installer\') );
            }

            ?>
            <div class="wrap">
                <?php
                // This is where we actually install the theme

                $theme_url = \'https://wordpress.org/themes/download/\' . urlencode( $slug ) . \'.\' . urlencode( $version ) . \'.zip\';

                $title = sprintf( __(\'Installing Theme: %s\'), $slug . \' \' . $version );
                $nonce = \'install-theme_\' . $slug;
                $url = \'update.php?action=install-theme&theme=\' . urlencode( $slug );
                $type = \'web\'; //Install theme type, From Web or an Upload.

                $upgrader = new Theme_Upgrader( new Theme_Installer_Skin( compact(\'title\', \'url\', \'nonce\', \'plugin\', \'api\', \'type\') ) );
                $upgrader->install( $theme_url );

                ?>
            </div>
            <?php
        }

        function theme_headers_action(){
            if( empty($_GET[\'_sononce\']) || !wp_verify_nonce( $_GET[\'_sononce\'], \'theme_info\' ) ) exit();
            if( empty( $_GET[\'theme_slug\'] ) || empty( $_GET[\'theme_version\'] ) ) exit();

            // header(\'content-type: application/json\');
            $data = SiteOrigin_Installer::single()->get_theme_data( $_GET[\'theme_slug\'], $_GET[\'theme_version\'] );
            echo json_encode( $data );
            exit();
        }
    }
}
SiteOrigin_Installer_Theme_Admin::single();