<?php

defined( 'ABSPATH' ) or die( 'Access denied' );
if ( !class_exists( 'A_W_F' ) ) {
    class A_W_F
    {
        /** Current running instance of A_W_F object
         *
         * @since 1.0.0
         * @var A_W_F object
         */
        private static  $instance ;
        /** Current running instance of annasta admin
         *
         * @since 1.0.0
         * @var A_W_F_admin object
         */
        public static  $admin = null ;
        /** Current running instance of annasta frontend
         *
         * @since 1.0.0
         * @var A_W_F_frontend object
         */
        public static  $front = null ;
        /** Wc products taxonomy names that aren't allowed to become a filter taxonomy
         *
         * @since 1.0.0
         * @var array
         */
        public static  $excluded_taxonomies ;
        /** Master array of presets
         *
         * @since 1.0.0
         * @var array
         */
        public static  $presets = array() ;
        /** An array of ids for all the available modules
         *
         * @since 1.0.0
         * @var array
         */
        public static  $modules ;
        /** Shortcodes id count for the current session
         *
         * @since 1.0.0
         * @var array
         */
        private static  $sc_id = 1 ;
        /** Caching avoidance workaround
         *
         * @since 1.0.0
         * @var string
         */
        public static  $plugin_version ;
        private function __construct()
        {
            self::$plugin_version = A_W_F_VERSION;
            //self::$plugin_version = time();
            
            if ( !class_exists( 'WooCommerce' ) ) {
                if ( is_admin() && version_compare( A_W_F_VERSION, get_option( 'awf_version', '0.0.0' ) ) > 0 ) {
                    add_action( 'admin_notices', array( $this, 'display_wc_absence_warning' ) );
                }
                return;
            }
            
            spl_autoload_register( array( $this, 'awf_autoloader' ) );
            add_action( 'init', array( $this, 'load_textdomain' ) );
            add_action( 'widgets_init', array( $this, 'register_widget' ) );
            add_action( 'init', array( $this, 'register_shortcode' ) );
            self::$excluded_taxonomies = array( 'product_type', 'product_visibility', 'product_shipping_class' );
            self::$presets = get_option( 'awf_presets', array() );
            if ( !is_array( self::$presets ) ) {
                self::$presets = array();
            }
            self::$modules = array(
                'taxonomy',
                'search',
                'price',
                'stock',
                'featured',
                'rating',
                'onsale',
                'ppp'
            );
            // @ToDo 'orderby'
            
            if ( is_admin() ) {
                
                if ( wp_doing_ajax() && isset( $_REQUEST['awf_front'] ) ) {
                    add_action( 'wp_ajax_awf', array( $this, 'frontend_ajax_controller' ) );
                    add_action( 'wp_ajax_nopriv_awf', array( $this, 'frontend_ajax_controller' ) );
                } else {
                    self::$admin = A_W_F_admin::get_instance();
                }
            
            } else {
                self::$front = A_W_F_frontend::get_instance();
                self::$front->filters_manager = 'A_W_F_filter_frontend';
            }
        
        }
        
        public static function get_instance()
        {
            if ( is_null( self::$instance ) ) {
                self::$instance = new self();
            }
            return self::$instance;
        }
        
        public static function activate_plugin()
        {
            if ( !current_user_can( 'activate_plugins' ) ) {
                return;
            }
            $plugin = ( isset( $_REQUEST['plugin'] ) ? $_REQUEST['plugin'] : '' );
            check_admin_referer( "activate-plugin_{$plugin}" );
            
            if ( empty(get_option( 'awf_presets' )) ) {
                $presets = array(
                    1 => array(
                    'position'     => 1,
                    'filters'      => array(),
                    'associations' => array(
                    0 => 'shop-pages',
                ),
                    'overrides'    => array(),
                ),
                );
                update_option( 'awf_presets', $presets );
                update_option( 'awf_preset_1_name', __( 'Default Preset', 'annasta-filters' ) );
            }
        
        }
        
        public static function deactivate_plugin()
        {
            if ( !current_user_can( 'activate_plugins' ) ) {
                return;
            }
            require 'class-a-w-f-admin.php';
            self::$admin = A_W_F_admin::get_instance();
            self::$admin->clear_product_counts_cache();
        }
        
        public static function uninstall_plugin()
        {
            if ( !current_user_can( 'activate_plugins' ) ) {
                return;
            }
            
            if ( empty(self::$admin) ) {
                require 'class-a-w-f-admin.php';
                self::$admin = A_W_F_admin::get_instance();
            }
            
            self::$admin->clear_product_counts_cache();
            unregister_widget( 'A_W_F_widget' );
            $all_options = wp_load_alloptions();
            $awf_options = array(
                'awf_version',
                'awf_premium',
                'awf_shortcode_pages',
                'awf_force_products_display_on',
                'awf_shop_columns',
                'awf_redirect_search',
                'awf_products_html_wrapper',
                'awf_pretty_scrollbars',
                'awf_ppp_default',
                'awf_include_children_on',
                'awf_cat_views_on',
                'awf_presets',
                'awf_custom_style'
            );
            foreach ( $all_options as $name => $value ) {
                if ( 0 !== strpos( $name, 'awf_' ) ) {
                    continue;
                }
                if ( stristr( $name, 'awf_preset_' ) || stristr( $name, 'awf_filter_' ) || substr( $name, -12 ) === '_pretty_name' || in_array( $name, $awf_options ) ) {
                    delete_option( $name );
                }
            }
        }
        
        public function display_wc_absence_warning()
        {
            echo  '<div class="notice notice-warning is-dismissible"><p>', __( 'annasta Woocommerce Product Filters requires WooCommerce plugin to function properly. Please install WooCommerce online shop to use the annasta Woocommerce Product Filters plugin.', 'annasta-filters' ), '</p></div>' ;
        }
        
        public function load_textdomain()
        {
            load_plugin_textdomain( 'annasta-filters', false, plugin_basename( dirname( A_W_F_PLUGIN_FILE ) ) . '/languages' );
        }
        
        public function frontend_ajax_controller()
        {
            self::$front = A_W_F_frontend::get_instance();
            self::$front->ajax_controller();
        }
        
        public function register_widget()
        {
            register_widget( 'A_W_F_widget' );
        }
        
        function register_shortcode()
        {
            add_shortcode( 'annasta_filters', array( $this, 'filters_shortcode' ) );
        }
        
        public function filters_shortcode( $atts )
        {
            
            if ( !empty(self::$front) && !empty(self::$presets) ) {
                $sc_id = 'shortcode-' . self::$sc_id++;
                $filtered_atts = shortcode_atts( array(
                    'shortcode_id' => $sc_id,
                    'preset_id'    => '',
                    'preset_name'  => '',
                ), $atts );
                if ( !empty($filtered_atts['preset_name']) ) {
                    foreach ( self::$presets as $id => $data ) {
                        $name = get_option( 'awf_preset_' . $id . '_name', '' );
                        
                        if ( $name === $filtered_atts['preset_name'] ) {
                            $filtered_atts['preset_id'] = $id;
                            break;
                        }
                    
                    }
                }
                $filtered_atts['preset_id'] = (int) $filtered_atts['preset_id'];
                if ( isset( self::$presets[$filtered_atts['preset_id']] ) ) {
                    return self::$front->display_shortcode( $filtered_atts );
                }
            }
            
            return '';
        }
        
        private function awf_autoloader( $class )
        {
            if ( 0 !== strpos( $class, 'A_W_F_' ) ) {
                return;
            }
            $class = strtolower( $class );
            $path = A_W_F_PLUGIN_PATH . 'code/';
            $file = 'class-' . str_replace( '_', '-', $class ) . '.php';
            $file_path = $path . $file;
            if ( is_readable( $file_path ) ) {
                include $file_path;
            }
        }
        
        private final function __clone()
        {
        }
        
        // prevent cloning
        private final function __wakeup()
        {
        }
        
        // prevent serialization
        /** Helper Functions */
        public static function format_print_r( $print )
        {
            print "<pre>";
            print_r( $print );
            print "</pre>";
            //A_W_F::format_print_r( self::$features_by_parent[0] );
            //error_log( 'before' . print_r( $filters[$preset_id], true ) );
        }
    
    }
}