<?php
/**
 * @package All-in-One-SEO-Pack
 */
/**
 * The Performance class.
 */
if ( !class_exists( 'All_in_One_SEO_Pack_Performance' ) ) {
	class All_in_One_SEO_Pack_Performance extends All_in_One_SEO_Pack_Module {

		protected $module_info = Array( );

		function All_in_One_SEO_Pack_Performance( $mod ) {
			$this->name = __('Performance', 'all_in_one_seo_pack');		// Human-readable name of the plugin
			$this->prefix = 'aiosp_performance_';						// option prefix
			$this->file = __FILE__;									// the current file
			parent::__construct();
			
			$help_text = Array(
				"memory_limit"		=> __( "This setting allows you to raise your PHP memory limit to a reasonable value. Note: WordPress core and other WordPress plugins may also change the value of the memory limit.<br /><a href='http://semperplugins.com/documentation/performance-settings/' target='_blank'>Click here for documentation on this setting</a>", 'all_in_one_seo_pack' ),
				"execution_time"	=> __( "This setting allows you to raise your PHP execution time to a reasonable value.<br /><a href='http://semperplugins.com/documentation/performance-settings/' target='_blank'>Click here for documentation on this setting</a>", 'all_in_one_seo_pack' ),
				"force_rewrites"	=> __( "Use output buffering to ensure that the title gets rewritten. Enable this option if you run into issues with the title tag being set by your theme or another plugin.<br /><a href='http://semperplugins.com/documentation/performance-settings/' target='_blank'>Click here for documentation on this setting</a>", 'all_in_one_seo_pack' )
			);
						
			$this->default_options = array(
					'memory_limit'		=> Array(	'name'	  => __( 'Raise memory limit',  'all_in_one_seo_pack' ),
				 						  			'default'	  => '256M', 'type' => 'select',
										  			'initial_options' => Array( 0 => __( "Use the system default", 'all_in_one_seo_pack' ), '32M' => '32MB', '64M' => '64MB', '128M' => '128MB', '256M' => '256MB' ) ),
					'execution_time'	=> Array(	'name'	  => __( 'Raise execution time',  'all_in_one_seo_pack' ),
				 						  			'default'	  => '', 'type' => 'select',
										  			'initial_options' => Array( '' => __( "Use the system default", 'all_in_one_seo_pack' ), 30 => '30s', 60 => '1m', 120 => '2m', 300 => '5m', 0 => __( 'No limit', 'all_in_one_seo_pack' ) ) )
				 );
			
			global $aiosp, $aioseop_options;
			if ( aioseop_option_isset( 'aiosp_rewrite_titles' ) && $aioseop_options['aiosp_rewrite_titles'] ) {
				$this->default_options['force_rewrites']	= Array(
								'name' => __( 'Force Rewrites:', 'all_in_one_seo_pack' ), 
								'default' => 1, 'type' => 'radio',
								'initial_options' => Array( 1 => __( 'Enabled', 'all_in_one_seo_pack' ),
															0 => __( 'Disabled', 'all_in_one_seo_pack' ) )
								);
			}
			
			$this->layout = Array(
				'default' => Array(
						'name' => $this->name,
						'help_link' => 'http://semperplugins.com/documentation/performance-settings/',
						'options' => array_keys( $this->default_options )
					)
			);
			
			$system_status = Array(
							'status' => Array( 'default' => '', 'type' => 'html', 'label' => 'none', 'save' => false ),
			);
			
			$this->layout['system_status'] = Array(
					'name' => __( 'System Status', 'all_in_one_seo_pack' ),
					'help_link' => 'http://semperplugins.com/documentation/performance-settings/',
					'options' => array_keys( $system_status )
				);
				
			$this->default_options = array_merge( $this->default_options, $system_status );
			
			if ( !empty( $help_text ) )
				foreach( $help_text as $k => $v )
					$this->default_options[$k]['help_text'] = $v;
			
			add_filter( $this->prefix . 'display_options', Array( $this, 'display_options_filter' ), 10, 2 );
			add_filter( $this->prefix . 'update_options', Array( $this, 'update_options_filter' ), 10, 2 );
			add_action( $this->prefix . 'settings_update', Array( $this, 'settings_update_action' ), 10, 2 );
		}
		
		function update_options_filter( $options, $location ) {
			if ( $location == null ) {
				if ( isset( $options[ $this->prefix . 'force_rewrites' ] ) )
					unset( $options[ $this->prefix . 'force_rewrites' ] );
			}
			return $options;
		}
		
		function display_options_filter( $options, $location ) {
			if ( $location == null ) {
				$options[ $this->prefix . 'force_rewrites' ] = 1;
				global $aiosp;
				if ( aioseop_option_isset( 'aiosp_rewrite_titles' ) ) {
					$opts = $aiosp->get_current_options( Array(), null );
					$options[ $this->prefix . 'force_rewrites' ] = $opts['aiosp_force_rewrites'];
				}
			}
			return $options;
		}
		
		function settings_update_action( $options, $location ) {
			if ( $location == null ) {
				if ( isset( $_POST[ $this->prefix . 'force_rewrites' ] ) ) {
					$force_rewrites = $_POST[ $this->prefix . 'force_rewrites' ];
					if ( ( $force_rewrites == 0 ) || ( $force_rewrites == 1 ) ) {
						global $aiosp;
						$opts = $aiosp->get_current_options( Array(), null );
						$opts['aiosp_force_rewrites'] = $force_rewrites;
						$aiosp->update_class_option( $opts );
						wp_cache_flush();
					}
				}
			}
		}
		
		function add_page_hooks() {
			$memory_usage = memory_get_peak_usage() / 1024 / 1024;
			if ( $memory_usage > 32 ) {
				unset( $this->default_options['memory_limit']['initial_options']['32M'] );
				if ( $memory_usage > 64 )  unset( $this->default_options['memory_limit']['initial_options']['64M'] );
				if ( $memory_usage > 128 ) unset( $this->default_options['memory_limit']['initial_options']['128M'] );
				if ( $memory_usage > 256 ) unset( $this->default_options['memory_limit']['initial_options']['256M'] );
			}
			$this->update_options();
			parent::add_page_hooks();
		}
		
		function settings_page_init() {
			$this->default_options['status']['default'] = $this->get_serverinfo();
		}
		
		function menu_order() {
			return 7;
		}
		
		function get_serverinfo() {
		    global $wpdb;
			global $wp_version;

		        $sqlversion = $wpdb->get_var("SELECT VERSION() AS version");
		        $mysqlinfo = $wpdb->get_results("SHOW VARIABLES LIKE 'sql_mode'");
		        if (is_array($mysqlinfo)) $sql_mode = $mysqlinfo[0]->Value;
		        if (empty($sql_mode)) $sql_mode = __('Not set', 'all_in_one_seo_pack' );
		        if(ini_get('safe_mode')) $safe_mode = __('On', 'all_in_one_seo_pack' );
		        else $safe_mode = __('Off', 'all_in_one_seo_pack' );
		        if(ini_get('allow_url_fopen')) $allow_url_fopen = __('On', 'all_in_one_seo_pack' );
		        else $allow_url_fopen = __('Off', 'all_in_one_seo_pack' );
		        if(ini_get('upload_max_filesize')) $upload_max = ini_get('upload_max_filesize');
		        else $upload_max = __('N/A', 'all_in_one_seo_pack' );
		        if(ini_get('post_max_size')) $post_max = ini_get('post_max_size');
		        else $post_max = __('N/A', 'all_in_one_seo_pack' );
		        if(ini_get('max_execution_time')) $max_execute = ini_get('max_execution_time');
		        else $max_execute = __('N/A', 'all_in_one_seo_pack' );
		        if(ini_get('memory_limit')) $memory_limit = ini_get('memory_limit');
		        else $memory_limit = __('N/A', 'all_in_one_seo_pack' );
		        if (function_exists('memory_get_usage')) $memory_usage = round(memory_get_usage() / 1024 / 1024, 2) . __(' MByte', 'all_in_one_seo_pack' );
		        else $memory_usage = __('N/A', 'all_in_one_seo_pack' );
		        if (is_callable('exif_read_data')) $exif = __('Yes', 'all_in_one_seo_pack' ). " ( V" . $this->substr(phpversion('exif'),0,4) . ")" ;
		        else $exif = __('No', 'all_in_one_seo_pack' );
		        if (is_callable('iptcparse')) $iptc = __('Yes', 'all_in_one_seo_pack' );
		        else $iptc = __('No', 'all_in_one_seo_pack' );
		        if (is_callable('xml_parser_create')) $xml = __('Yes', 'all_in_one_seo_pack' );
		        else $xml = __('No', 'all_in_one_seo_pack' );

			if ( function_exists( 'wp_get_theme' ) ) {
				$theme = wp_get_theme();
			} else {
				$theme = get_theme( get_current_theme() );
			}


			if ( function_exists( 'is_multisite' ) ) {
				if ( is_multisite() ) {
					$ms = __('Yes', 'all_in_one_seo_pack' );
				} else {
					$ms = __('No', 'all_in_one_seo_pack' );
				}

			} else $ms = __('N/A', 'all_in_one_seo_pack' );

			$siteurl = get_option('siteurl');
			$homeurl = get_option('home');
			$db_version = get_option('db_version');

			$debug_info = Array(
			        __('Operating System', 'all_in_one_seo_pack' )			=> PHP_OS,
			        __('Server', 'all_in_one_seo_pack' )				=> $_SERVER["SERVER_SOFTWARE"],
			        __('Memory usage', 'all_in_one_seo_pack' )			=> $memory_usage,
			        __('MYSQL Version', 'all_in_one_seo_pack' )			=> $sqlversion,
			        __('SQL Mode', 'all_in_one_seo_pack' )				=> $sql_mode,
			        __('PHP Version', 'all_in_one_seo_pack' )			=> PHP_VERSION,
			        __('PHP Safe Mode', 'all_in_one_seo_pack' )			=> $safe_mode,
			        __('PHP Allow URL fopen', 'all_in_one_seo_pack' )		=> $allow_url_fopen,
			        __('PHP Memory Limit', 'all_in_one_seo_pack' )			=> $memory_limit,
			        __('PHP Max Upload Size', 'all_in_one_seo_pack' )		=> $upload_max,
			        __('PHP Max Post Size', 'all_in_one_seo_pack' )			=> $post_max,
			        __('PHP Max Script Execute Time', 'all_in_one_seo_pack' )	=> $max_execute,
			        __('PHP Exif support', 'all_in_one_seo_pack' )			=> $exif,
			        __('PHP IPTC support', 'all_in_one_seo_pack' )			=> $iptc,
			        __('PHP XML support', 'all_in_one_seo_pack' )			=> $xml,
				__('Site URL', 'all_in_one_seo_pack' )				=> $siteurl,
				__('Home URL', 'all_in_one_seo_pack' )				=> $homeurl,
				__('WordPress Version', 'all_in_one_seo_pack' )			=> $wp_version,
				__('WordPress DB Version', 'all_in_one_seo_pack' )		=> $db_version,
				__('Multisite', 'all_in_one_seo_pack' )				=> $ms,
				__('Active Theme', 'all_in_one_seo_pack' )			=> $theme['Name'].' '.$theme['Version']
			);
			$debug_info['Active Plugins'] = null;
			$active_plugins = $inactive_plugins = Array();
			$plugins = get_plugins();
			foreach ($plugins as $path => $plugin) {
				if ( is_plugin_active( $path ) ) {
					$debug_info[$plugin['Name']] = $plugin['Version'];
				} else {
					$inactive_plugins[$plugin['Name']] = $plugin['Version'];
				}
			}
			$debug_info['Inactive Plugins'] = null;
			$debug_info = array_merge( $debug_info, (array)$inactive_plugins );

			$mail_text = __( "All in One SEO Pack Pro Debug Info", 'all_in_one_seo_pack' ) . "\r\n------------------\r\n\r\n";
			$page_text = "";
			if ( !empty( $debug_info ) )
				foreach($debug_info as $name => $value) {
					if ($value !== null) {
						$page_text .= "<li><strong>$name</strong> $value</li>";
						$mail_text .= "$name: $value\r\n";
					} else {
						$page_text .= "</ul><h2>$name</h2><ul class='sfwd_debug_settings'>";
						$mail_text .= "\r\n$name\r\n----------\r\n";
					}
				}

			do if ( !empty( $_REQUEST['sfwd_debug_submit'] ) ) {
				$nonce=$_REQUEST['sfwd_debug_nonce'];
				if (! wp_verify_nonce($nonce, 'sfwd-debug-nonce') ) {
					echo "<div class='sfwd_debug_error'>" . __( "Form submission error: verification check failed.", 'all_in_one_seo_pack' ) . "</div>";
					break;
				}
				if ($_REQUEST['sfwd_debug_send_email']) {
					if (wp_mail($_REQUEST['sfwd_debug_send_email'], sprintf( __( "SFWD Debug Mail From Site %s.", 'all_in_one_seo_pack'), $siteurl), $mail_text ) ) {
						echo "<div class='sfwd_debug_mail_sent'>" . sprintf( __( "Sent to %s.", 'all_in_one_seo_pack' ), $_REQUEST['sfwd_debug_send_email'] ) . "</div>";
					} else {
						echo "<div class='sfwd_debug_error'>" . sprintf( __( "Failed to send to %s.", 'all_in_one_seo_pack' ),  $_REQUEST['sfwd_debug_send_email'] ) . "</div>";
					}
				} else {
					echo "<div class='sfwd_debug_error'>" . __( 'Error: please enter an e-mail address before submitting.', 'all_in_one_seo_pack' ) . "</div>";
				}
			} while(0); // control structure for use with break
			$nonce = wp_create_nonce('sfwd-debug-nonce');
			$buf =	"<ul class='sfwd_debug_settings'>\n{$page_text}\n</ul>\n<p>\n" .
					'<input name="sfwd_debug_send_email" type="text" value="" placeholder="' . __( "E-mail debug information", 'all_in_one_seo_pack' ) . '"><input name="sfwd_debug_nonce" type="hidden" value="' .
					$nonce . '"><input name="sfwd_debug_submit" type="submit" value="' . __( 'Submit', 'all_in_one_seo_pack' ) . '" class="button-primary"><p>';
			return $buf;
		}
	}
}