<?php
/**
 * Plugin Name: YITH WooCommerce Ajax Product Filter
 * Plugin URI: https://wordpress.org/plugins/yith-woocommerce-ajax-navigation/
 * Description: <code><strong>YITH WooCommerce AJAX Product Filter</strong></code> allows your users to find the product they are looking for as quickly as possible. Thanks to the plugin you will be able to set up one or more search filters for your WooCommerce products and improve the user experience of your shop. <a href="https://yithemes.com/" target="_blank">Get more plugins for your e-commerce shop on <strong>YITH</strong></a>
 * Version: 4.4.0
 * Author: YITH
 * Author URI: https://yithemes.com/
 * Text Domain: yith-woocommerce-ajax-navigation
 * Domain Path: /languages/
 *
 * WC requires at least: 5.3
 * WC tested up to: 5.9
 *
 * @author  YITH
 * @package YITH\AjaxProductFilter
 * @version 1.3.2
 */

/**
 * Copyright 2020  YITH  (email : plugins@yithemes.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
} // Exit if accessed directly

// define required constants.

! defined( 'YITH_WCAN' ) && define( 'YITH_WCAN', true );
! defined( 'YITH_WCAN_URL' ) && define( 'YITH_WCAN_URL', plugin_dir_url( __FILE__ ) );
! defined( 'YITH_WCAN_DIR' ) && define( 'YITH_WCAN_DIR', plugin_dir_path( __FILE__ ) );
! defined( 'YITH_WCAN_INC' ) && define( 'YITH_WCAN_INC', YITH_WCAN_DIR . 'includes/' );
! defined( 'YITH_WCAN_VERSION' ) && define( 'YITH_WCAN_VERSION', '4.4.0' );
! defined( 'YITH_WCAN_FREE_INIT' ) && define( 'YITH_WCAN_FREE_INIT', plugin_basename( __FILE__ ) );
! defined( 'YITH_WCAN_FILE' ) && define( 'YITH_WCAN_FILE', __FILE__ );
! defined( 'YITH_WCAN_SLUG' ) && define( 'YITH_WCAN_SLUG', 'yith-woocommerce-ajax-navigation' );

// define required functions.

if ( ! function_exists( 'yith_wcan_register_activation' ) ) {
	/**
	 * Register plugins among recently activated ones
	 *
	 * @return void
	 *
	 * @since 4.0
	 * @author Antonio La Rocca <antonio.larocca@yithemes.com>
	 */
	function yith_wcan_register_activation() {
		if ( ! function_exists( 'yith_plugin_registration_hook' ) ) {
			require_once 'plugin-fw/yit-plugin-registration-hook.php';
		}

		register_activation_hook( YITH_WCAN_FILE, 'yith_plugin_registration_hook' );
	}
}

if ( ! function_exists( 'yith_wcan_free_install' ) ) {
	/**
	 * Installs plugin and start the processing
	 *
	 * @return void
	 *
	 * @since 4.0
	 * @author Andrea Grillo <andrea.grillo@yithemes.com>
	 */
	function yith_wcan_free_install() {

		if ( ! function_exists( 'WC' ) ) {
			add_action( 'admin_notices', 'yith_wcan_install_woocommerce_admin_notice' );
		} elseif ( defined( 'YITH_WCAN_PREMIUM' ) ) {
			add_action( 'admin_notices', 'yith_wcan_deactivate_free_version' );
			deactivate_plugins( plugin_basename( __FILE__ ) );
		} else {
			/**
			 * Instance main plugin class
			 */
			global $yith_wcan;

			// load plugin text domain.
			load_plugin_textdomain( 'yith-woocommerce-ajax-navigation', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );

			$yith_wcan = yith_wcan_initialize();
		}
	}
}

if ( ! function_exists( 'yith_wcan_initialize' ) ) {
	/**
	 * Unique access to instance of YITH_Vendors class.
	 *
	 * @return YITH_WCAN
	 * @since 1.0.0
	 */
	function yith_wcan_initialize() {
		// Load required classes and functions.
		require_once( YITH_WCAN_INC . 'class-yith-wcan.php' );

		return YITH_WCAN();
	}
}

if ( ! function_exists( 'yith_wcan_install_plugin_framework' ) ) {
	/**
	 * Performs check over plugin framework, and maybe loads it
	 *
	 * @return void
	 *
	 * @since 4.0
	 * @author Antonio La Rocca <antonio.larocca@yithemes.com>
	 */
	function yith_wcan_install_plugin_framework() {
		// plugin framework version check.
		if ( ! function_exists( 'yit_maybe_plugin_fw_loader' ) && file_exists( YITH_WCAN_DIR . 'plugin-fw/init.php' ) ) {
			require_once( YITH_WCAN_DIR . 'plugin-fw/init.php' );
		}

		yit_maybe_plugin_fw_loader( YITH_WCAN_DIR );
	}
}

if ( ! function_exists( 'yith_wcan_deactivate_free_version' ) ) {
	/**
	 * Print an admin notice if trying to activate free version when premium is already enabled
	 *
	 * @return void
	 * @use    admin_notices hooks
	 * @since  1.0
	 * @author Andrea Grillo <andrea.grillo@yithemes.com>
	 */
	function yith_wcan_deactivate_free_version() {
		?>
		<div class="error">
			<p><?php esc_html_e( 'You can\'t activate the free version of YITH WooCommerce Ajax Product Filter while you are using the premium one.', 'yith-wocc' ); ?></p>
		</div>
		<?php
	}
}

if ( ! function_exists( 'yith_wcan_install_woocommerce_admin_notice' ) ) {
	/**
	 * Print an admin notice if woocommerce is deactivated
	 *
	 * @return void
	 * @use    admin_notices hooks
	 * @since  1.0
	 * @author Andrea Grillo <andrea.grillo@yithemes.com>
	 */
	function yith_wcan_install_woocommerce_admin_notice() {
		?>
		<div class="error">
			<p><?php esc_html_e( 'YITH WooCommerce Ajax Product Filter is enabled but not effective. It requires WooCommerce in order to work.', 'yith-woocommerce-ajax-navigation' ); ?></p>
		</div>
		<?php
	}
}

// register activation.
yith_wcan_register_activation();

// load plugin framework.
yith_wcan_install_plugin_framework();

// install plugin.
add_action( 'plugins_loaded', 'yith_wcan_free_install', 11 );