<?php
/**
 * @copyright 2017  Cloudways  https://www.cloudways.com
 *
 *  This plugin is inspired from WP Speed of Light by JoomUnited.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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
 */
defined( 'ABSPATH' ) || die( 'No direct script access allowed!' );

class Breeze_Admin {
	public function __construct() {
		add_action(
			'init',
			function () {
				load_plugin_textdomain( 'breeze', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
			}
		);

		// Add our custom action to clear cache
		add_action( 'breeze_clear_all_cache', array( $this, 'breeze_clear_all_cache' ) );
		add_action( 'breeze_clear_varnish', array( $this, 'breeze_clear_varnish' ) );

		if ( is_admin() || 'cli' === php_sapi_name() ) {
			add_action( 'admin_init', array( $this, 'admin_init' ) );

			//register menu
			add_action( 'admin_menu', array( $this, 'register_menu_page' ) );
			add_action( 'network_admin_menu', array( $this, 'register_network_menu_page' ) );

			// Add notice when installing plugin
			$first_install = get_option( 'breeze_first_install' );

			if ( $first_install === false ) {
				add_option( 'breeze_first_install', 'yes' );
			}

			if ( $first_install == 'yes' ) {
				add_action( 'admin_notices', array( $this, 'installing_notices' ) );
			}

			$config = breeze_get_option( 'basic_settings' );

			if ( isset( $config['breeze-display-clean'] ) && $config['breeze-display-clean'] ) {
				//register top bar menu
				add_action( 'admin_bar_menu', array( $this, 'register_admin_bar_menu' ), 999 );
			}
			/** Load admin js * */
			add_action( 'admin_enqueue_scripts', array( $this, 'loadAdminScripts' ) );

			add_action( 'wp_head', array( $this, 'define_ajaxurl' ) );
			$this->ajaxHandle();

			// Add setting buttons to plugins list page
			add_filter( 'plugin_action_links_' . BREEZE_BASENAME, array( $this, 'breeze_add_action_links' ) );
			add_filter( 'network_admin_plugin_action_links_' . BREEZE_BASENAME, array( $this, 'breeze_add_action_links_network' ) );
		}

	}

	/**
	 * Admin Init
	 *
	 */
	public function admin_init() {
		//Check plugin requirements
		if ( version_compare( PHP_VERSION, '5.3', '<' ) ) {
			if ( current_user_can( 'activate_plugins' ) && is_plugin_active( plugin_basename( __FILE__ ) ) ) {
				deactivate_plugins( __FILE__ );
				add_action( 'admin_notices', array( $this, 'breeze_show_error' ) );
				unset( $_GET['activate'] );
			}
		}

		//Do not load anything more
		return;
	}

	//define ajaxurl
	function define_ajaxurl() {
		if ( current_user_can( 'manage_options' ) ) {
			echo '<script type="text/javascript">
           var ajaxurl = "' . admin_url( 'admin-ajax.php' ) . '";
             </script>';
		}
	}

	// Add notice message when install plugin
	public function installing_notices() {
		$class   = 'notice notice-success';
		$message = __( 'Thanks for installing Breeze. It is always recommended not to use more than one caching plugin at the same time. We recommend you to purge cache if necessary.', 'breeze' );

		printf( '<div class="%1$s"><p>%2$s <button class="button" id="breeze-hide-install-msg">' . __( 'Hide message', 'breeze' ) . '</button></p></div>', esc_attr( $class ), esc_html( $message ) );
		update_option( 'breeze_first_install', 'no' );
	}


	function loadAdminScripts() {
		if ( ! wp_script_is( 'jquery', 'enqueued' ) ) {
			wp_enqueue_script( 'jquery' );
		}
		wp_enqueue_script( 'breeze-backend', plugins_url( 'assets/js/breeze-backend.js', dirname( __FILE__ ) ), array( 'jquery' ), BREEZE_VERSION, true );
		wp_enqueue_style( 'breeze-topbar', plugins_url( 'assets/css/topbar.css', dirname( __FILE__ ) ) );
		wp_enqueue_style( 'breeze-notice', plugins_url( 'assets/css/notice.css', dirname( __FILE__ ) ) );
		$current_screen = get_current_screen();
		if ( $current_screen->base == 'settings_page_breeze' || $current_screen->base == 'settings_page_breeze-network' ) {
			//add css
			wp_enqueue_style( 'breeze-style', plugins_url( 'assets/css/style.css', dirname( __FILE__ ) ) );
			//js
			wp_enqueue_script( 'breeze-configuration', plugins_url( 'assets/js/breeze-configuration.js', dirname( __FILE__ ) ), array( 'jquery' ), BREEZE_VERSION, true );

			// Include the required jQuery UI Core & Libraries
			wp_enqueue_script( 'jquery-ui-core' );
			wp_enqueue_script( 'jquery-ui-tabs' );
			wp_enqueue_script( 'jquery-ui-accordion' );
			wp_enqueue_script( 'jquery-ui-sortable' );
			wp_enqueue_script( 'jquery-ui-widget' );
		}

		$token_name = array(
			'breeze_purge_varnish'  => wp_create_nonce( '_breeze_purge_varnish' ),
			'breeze_purge_database' => wp_create_nonce( '_breeze_purge_database' ),
			'breeze_purge_cache'    => wp_create_nonce( '_breeze_purge_cache' ),
		);

		wp_localize_script( 'breeze-backend', 'breeze_token_name', $token_name );
	}

	/**
	 * Register menu
	 *
	 */
	function register_menu_page() {
		//add submenu for cloudsway
		add_submenu_page( 'options-general.php', __( 'Breeze', 'breeze' ), __( 'Breeze', 'breeze' ), 'manage_options', 'breeze', array( $this, 'breeze_load_page' ) );
	}

	function register_network_menu_page() {
		//add submenu for multisite network
		add_submenu_page( 'settings.php', __( 'Breeze', 'breeze' ), __( 'Breeze', 'breeze' ), 'manage_options', 'breeze', array( $this, 'breeze_load_page' ) );
	}


	/**
	 * Register bar menu
	 *
	 * @param WP_Admin_Bar $wp_admin_bar
	 */
	function register_admin_bar_menu( WP_Admin_Bar $wp_admin_bar ) {
		if ( ! current_user_can( 'manage_options' ) && ! current_user_can( 'editor' ) ) {
			return;
		}

		$is_network = is_multisite() && is_network_admin();

		// add parent item
		$args = array(
			'id'    => 'breeze-topbar',
			'title' => esc_html__( 'Breeze', 'breeze' ),
			'meta'  => array(
				'classname' => 'breeze',
			),
		);
		$wp_admin_bar->add_node( $args );

		// Recreate the current URL in order to redirect to the same page on cache purge.
		$current_protocol   = is_ssl() ? 'https' : 'http';
		$current_host       = $_SERVER['HTTP_HOST'];
		$current_script     = $_SERVER['SCRIPT_NAME'];
		$current_params     = $_SERVER['QUERY_STRING'];
		$current_screen_url = $current_protocol . '://' . $current_host . $current_script . '?' . $current_params;
		$current_screen_url = remove_query_arg( array( 'breeze_purge', '_wpnonce' ), $current_screen_url );

		// add purge all item
		$args = array(
			'id'     => 'breeze-purge-all',
			'title'  => ( ! is_multisite() || $is_network ) ? esc_html__( 'Purge All Cache', 'breeze' ) : esc_html__( 'Purge Site Cache', 'breeze' ),
			'parent' => 'breeze-topbar',
			'href'   => esc_url( wp_nonce_url( add_query_arg( 'breeze_purge', 1, $current_screen_url ), 'breeze_purge_cache' ) ),
			'meta'   => array( 'class' => 'breeze-toolbar-group' ),
		);
		$wp_admin_bar->add_node( $args );

		// Editor role can only use Purge all cache option
		if ( ! current_user_can( 'manage_options' ) ) {
			return;
		}

		// add purge modules group
		$args = array(
			'id'     => 'breeze-purge-modules',
			'title'  => esc_html__( 'Purge Modules', 'breeze' ),
			'parent' => 'breeze-topbar',
			'meta'   => array( 'class' => 'breeze-toolbar-group' ),
		);
		$wp_admin_bar->add_node( $args );

		// add child item (Purge Modules)
		$args = array(
			'id'     => 'breeze-purge-varnish-group',
			'title'  => esc_html__( 'Purge Varnish Cache', 'breeze' ),
			'parent' => 'breeze-purge-modules',
		);
		$wp_admin_bar->add_node( $args );

		// add child item (Purge Modules)
		$args = array(
			'id'     => 'breeze-purge-file-group',
			'title'  => esc_html__( 'Purge Internal Cache', 'breeze' ),
			'parent' => 'breeze-purge-modules',
		);
		$wp_admin_bar->add_node( $args );

		// add settings item
		$args = array(
			'id'     => 'breeze-settings',
			'title'  => esc_html__( 'Settings', 'breeze' ),
			'parent' => 'breeze-topbar',
			'href'   => $is_network ? network_admin_url( 'settings.php?page=breeze' ) : admin_url( 'options-general.php?page=breeze' ),
			'meta'   => array( 'class' => 'breeze-toolbar-group' ),
		);
		$wp_admin_bar->add_node( $args );

		// add support item
		$args = array(
			'id'     => 'breeze-support',
			'title'  => esc_html__( 'Support', 'breeze' ),
			'href'   => 'https://support.cloudways.com/breeze-wordpress-cache-configuration',
			'parent' => 'breeze-topbar',
			'meta'   => array(
				'class'  => 'breeze-toolbar-group',
				'target' => '_blank',
			),
		);
		$wp_admin_bar->add_node( $args );
	}

	function breeze_load_page() {
		if ( isset( $_GET['page'] ) && $_GET['page'] == 'breeze' ) {
			require_once( BREEZE_PLUGIN_DIR . 'views/breeze-setting-views.php' );
		}
	}

	public function breeze_show_error() {
		echo '<div class="error"><p><strong>Breeze</strong> need at least PHP 5.3 version, please update php before installing the plugin.</p></div>';
	}

	//ajax admin
	function ajaxHandle() {
		add_action( 'wp_ajax_breeze_purge_varnish', array( 'Breeze_Configuration', 'purge_varnish_action' ) );
		add_action( 'wp_ajax_breeze_purge_file', array( 'Breeze_Configuration', 'breeze_ajax_clean_cache' ) );
		add_action( 'wp_ajax_breeze_purge_database', array( 'Breeze_Configuration', 'breeze_ajax_purge_database' ) );
	}

	/*
	 * Register active plugin hook
	 */
	public static function plugin_active_hook() {
		WP_Filesystem();
		// Default basic
		$basic = breeze_get_option( 'basic_settings' );
		if ( empty( $basic ) ) {
			$basic = array();
		}
		$default_basic = array(
			'breeze-active'             => '1',
			'breeze-ttl'                => '',
			'breeze-minify-html'        => '0',
			'breeze-minify-css'         => '0',
			'breeze-minify-js'          => '0',
			'breeze-gzip-compression'   => '1',
			'breeze-desktop-cache'      => '1',
			'breeze-browser-cache'      => '1',
			'breeze-mobile-cache'       => '1',
			'breeze-disable-admin'      => '1',
			'breeze-display-clean'      => '1',
			'breeze-include-inline-js'  => '0',
			'breeze-include-inline-css' => '0',
		);
		$basic         = array_merge( $default_basic, $basic );

		// Default Advanced
		$advanced = breeze_get_option( 'advanced_settings' );
		if ( empty( $advanced ) ) {
			$advanced = array();
		}
		$default_advanced = array(
			'breeze-exclude-urls'      => array(),
			'breeze-group-css'         => '0',
			'breeze-group-js'          => '0',
			'breeze-exclude-css'       => array(),
			'breeze-exclude-js'        => array(),
			'breeze-move-to-footer-js' => array(),
			'breeze-defer-js'          => array(),
		);
		$advanced         = array_merge( $default_advanced, $advanced );

		//CDN default
		$cdn = breeze_get_option( 'cdn_integration' );
		if ( empty( $cdn ) ) {
			$cdn = array();
		}
		$wp_content  = substr( WP_CONTENT_DIR, strlen( ABSPATH ) );
		$default_cdn = array(
			'cdn-active'          => '0',
			'cdn-url'             => '',
			'cdn-content'         => array( 'wp-includes', $wp_content ),
			'cdn-exclude-content' => array( '.php' ),
			'cdn-relative-path'   => '1',
		);
		$cdn         = array_merge( $default_cdn, $cdn );

		// Varnish default
		$varnish = breeze_get_option( 'varnish_cache' );
		if ( empty( $varnish ) ) {
			$varnish = array();
		}
		$default_varnish = array(
			'auto-purge-varnish' => '1',
		);
		$varnish         = array_merge( $default_varnish, $varnish );

		if ( is_multisite() ) {
			$blogs = get_sites();
			foreach ( $blogs as $blog ) {
				$blog_basic = get_blog_option( (int) $blog->blog_id, 'breeze_basic_settings', '' );
				if ( empty( $blog_basic ) ) {
					update_blog_option( (int) $blog->blog_id, 'breeze_basic_settings', $basic );
				}

				$blog_advanced = get_blog_option( (int) $blog->blog_id, 'breeze_advanced_settings', '' );
				if ( empty( $blog_advanced ) ) {
					update_blog_option( (int) $blog->blog_id, 'breeze_advanced_settings', $advanced );
				}

				$blog_cdn = get_blog_option( (int) $blog->blog_id, 'breeze_cdn_integration', '' );
				if ( empty( $blog_cdn ) ) {
					update_blog_option( (int) $blog->blog_id, 'breeze_cdn_integration', $cdn );
				}

				$blog_varnish = get_blog_option( (int) $blog->blog_id, 'breeze_varnish_cache', '' );
				if ( empty( $blog_varnish ) ) {
					update_blog_option( (int) $blog->blog_id, 'breeze_varnish_cache', $varnish );
				}
			}
		} else {
			update_option( 'breeze_basic_settings', $basic );
			update_option( 'breeze_advanced_settings', $advanced );
			update_option( 'breeze_cdn_integration', $cdn );
			update_option( 'breeze_varnish_cache', $varnish );
		}

		//add header to htaccess if setting is enabled or by default if first installed
		Breeze_Configuration::update_htaccess();
		//automatic config start cache
		Breeze_ConfigCache::factory()->write();
		Breeze_ConfigCache::factory()->write_config_cache();

		if ( ! empty( $basic ) && ! empty( $basic['breeze-active'] ) ) {
			Breeze_ConfigCache::factory()->toggle_caching( true );
		}
	}

	/*
	 * Register deactive plugin hook
	 */
	public static function plugin_deactive_hook() {
		WP_Filesystem();
		Breeze_ConfigCache::factory()->clean_up();
		Breeze_ConfigCache::factory()->clean_config();
		Breeze_ConfigCache::factory()->toggle_caching( false );
		Breeze_Configuration::update_htaccess( true );
	}

	/*
	 * Render tab
	 */
	public static function render( $tab ) {
		require_once( BREEZE_PLUGIN_DIR . 'views/tabs/' . $tab . '.php' );
	}

	// Check varnish cache exist
	public static function check_varnish() {
		if ( isset( $_SERVER['HTTP_X_VARNISH'] ) ) {
			return true;
		}

		return false;
	}

	// Applied to the list of links to display on the plugins page
	public function breeze_add_action_links( $links ) {
		$mylinks = array(
			'<a href="' . admin_url( 'options-general.php?page=breeze' ) . '">Settings</a>',
		);

		return array_merge( $mylinks, $links );
	}

	// Applied to the list of links to display on the network plugins page
	public function breeze_add_action_links_network( $links ) {
		$mylinks = array(
			'<a href="' . network_admin_url( 'settings.php?page=breeze' ) . '">Settings</a>',
		);

		return array_merge( $mylinks, $links );
	}

	// Clear all cache action
	public function breeze_clear_all_cache() {
		//delete minify
		Breeze_MinificationCache::clear_minification();
		//clear normal cache
		Breeze_PurgeCache::breeze_cache_flush();
		//clear varnish cache
		$this->breeze_clear_varnish();
	}

	// Clear all varnish cache action
	public function breeze_clear_varnish() {
		$main = new Breeze_PurgeVarnish();

		$is_network = ( is_network_admin() || ( ! empty( $_POST['is_network'] ) && 'true' === $_POST['is_network'] ) );

		if ( is_multisite() && $is_network ) {
			$sites = get_sites();
			foreach ( $sites as $site ) {
				switch_to_blog( $site->blog_id );
				$homepage = home_url() . '/?breeze';
				$main->purge_cache( $homepage );
				restore_current_blog();
			}
		} else {
			$homepage = home_url() . '/?breeze';
			$main->purge_cache( $homepage );
		}
	}
}

add_action(
	'init',
	function () {
		$admin = new Breeze_Admin();
	},
	0
);