<?php

/**

 * bbPress Converter

 *

 * Based on the hard work of Adam Ellis at http://bbconverter.com

 *

 * @package bbPress

 * @subpackage Administration

 */

// Exit if accessed directly

if ( !defined( 'ABSPATH' ) ) exit;

/**

 * Main BBP_Converter Class

 */

class BBP_Converter {

	/**

	 * The main bbPress Converter loader

	 *

	 * @since bbPress (r3813)

	 * @uses BBP_Converter::includes() Include the required files

	 * @uses BBP_Converter::setup_actions() Setup the actions

	 */

	public function __construct() {

		// Bail if request is not correct

		switch ( strtoupper( $_SERVER['REQUEST_METHOD'] ) ) {

			// Converter is converting

			case 'POST' :

				if ( ( empty( $_POST['action'] ) || ( 'bbconverter_process' !=  $_POST['action'] ) ) )

					return;

				break;

			// Some other admin page

			case 'GET'  :

				if ( ( empty( $_GET['page'] ) || ( 'bbp-converter' !=  $_GET['page'] ) ) )

					return;

				break;

		}

		// Proceed with the actions

		$this->setup_actions();

	}

	/**

	 * Setup the default actions

	 *

	 * @since bbPress (r3813)

	 * @uses add_action() To add various actions

	 */

	private function setup_actions() {

		// Attach to the admin head with our ajax requests cycle and css

		add_action( 'bbp_admin_head',              array( $this, 'admin_head'              ) );

		// Attach the bbConverter admin settings action to the WordPress admin init action.

		add_action( 'bbp_register_admin_settings', array( $this, 'register_admin_settings' ) );

		// Attach to the admin ajax request to process cycles

		add_action( 'wp_ajax_bbconverter_process', array( $this, 'process_callback'        ) );

	}

	/**

	 * Register the settings

	 *

	 * @since bbPress (r3813)

	 * @uses add_settings_section() To add our own settings section

	 * @uses add_settings_field() To add various settings fields

	 * @uses register_setting() To register various settings

	 */

	public function register_admin_settings() {

		// Add the main section

		add_settings_section( 'bbpress_converter_main',     __( 'Database Settings', 'bbpress' ),  'bbp_converter_setting_callback_main_section', 'bbpress_converter' );

		// System Select

		add_settings_field( '_bbp_converter_platform',      __( 'Select Platform',   'bbpress' ),  'bbp_converter_setting_callback_platform', 'bbpress_converter', 'bbpress_converter_main' );

		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_platform',           'sanitize_title' );

		// Database Server

		add_settings_field( '_bbp_converter_db_server',     __( 'Database Server',   'bbpress' ),  'bbp_converter_setting_callback_dbserver', 'bbpress_converter', 'bbpress_converter_main' );

		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_server',          'sanitize_title' );

		// Database Server Port

		add_settings_field( '_bbp_converter_db_port',       __( 'Database Port',     'bbpress' ),  'bbp_converter_setting_callback_dbport', 'bbpress_converter', 'bbpress_converter_main' );

		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_port',            'sanitize_title' );

		// Database Name

		add_settings_field( '_bbp_converter_db_name',       __( 'Database Name',     'bbpress' ),  'bbp_converter_setting_callback_dbname', 'bbpress_converter', 'bbpress_converter_main' );

		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_name',            'sanitize_title' );

		// Database User

		add_settings_field( '_bbp_converter_db_user',       __( 'Database User',     'bbpress' ),  'bbp_converter_setting_callback_dbuser', 'bbpress_converter', 'bbpress_converter_main' );

		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_user',            'sanitize_title' );

		// Database Pass

		add_settings_field( '_bbp_converter_db_pass',       __( 'Database Password', 'bbpress' ),  'bbp_converter_setting_callback_dbpass', 'bbpress_converter', 'bbpress_converter_main' );

		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_pass',            'sanitize_title' );

		// Database Prefix

		add_settings_field( '_bbp_converter_db_prefix',     __( 'Table Prefix',      'bbpress' ),  'bbp_converter_setting_callback_dbprefix', 'bbpress_converter', 'bbpress_converter_main' );

		register_setting  ( 'bbpress_converter_main',       '_bbp_converter_db_prefix',          'sanitize_title' );

		// Add the options section

		add_settings_section( 'bbpress_converter_opt',      __( 'Options',           'bbpress' ),  'bbp_converter_setting_callback_options_section', 'bbpress_converter' );

		// Rows Limit

		add_settings_field( '_bbp_converter_rows',          __( 'Rows Limit',        'bbpress' ),  'bbp_converter_setting_callback_rows', 'bbpress_converter', 'bbpress_converter_opt' );

		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_rows',               'intval' );

		// Delay Time

		add_settings_field( '_bbp_converter_delay_time',    __( 'Delay Time',        'bbpress' ), 'bbp_converter_setting_callback_delay_time', 'bbpress_converter', 'bbpress_converter_opt' );

		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_delay_time',        'intval' );

		// Convert Users ?

		add_settings_field( '_bbp_converter_convert_users', __( 'Convert Users',     'bbpress' ), 'bbp_converter_setting_callback_convert_users', 'bbpress_converter', 'bbpress_converter_opt' );

		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_convert_users',     'intval' );

		// Restart

		add_settings_field( '_bbp_converter_restart',       __( 'Start Over',        'bbpress' ), 'bbp_converter_setting_callback_restart', 'bbpress_converter', 'bbpress_converter_opt' );

		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_restart',           'intval' );

		// Clean

		add_settings_field( '_bbp_converter_clean',         __( 'Purge Previous Import', 'bbpress' ), 'bbp_converter_setting_callback_clean', 'bbpress_converter', 'bbpress_converter_opt' );

		register_setting  ( 'bbpress_converter_opt',        '_bbp_converter_clean',             'intval' );

	}

	/**

	 * Admin scripts

	 *

	 * @since bbPress (r3813)

	 */

	public function admin_head() { ?>

		<style type="text/css" media="screen">

			/*<![CDATA[*/

			div.bbp-converter-updated,

			div.bbp-converter-warning {

				border-radius: 3px 3px 3px 3px;

				border-style: solid;

				border-width: 1px;

				padding: 5px 5px 5px 5px;

			}

			div.bbp-converter-updated {

				height: 300px;

				overflow: auto;

				display: none;

				background-color: #FFFFE0;

				border-color: #E6DB55;

				font-family: monospace;

				font-weight: bold;

			}

			div.bbp-converter-updated p {

				margin: 0.5em 0;

				padding: 2px;

				float: left;

				clear: left;

			}

			div.bbp-converter-updated p.loading {

				padding: 2px 20px 2px 2px;

				background-image: url('<?php echo admin_url(); ?>images/wpspin_light.gif');

				background-repeat: no-repeat;

				background-position: center right;

			}

			#bbp-converter-stop {

				display:none;

			}

			#bbp-converter-progress {

				display:none;

			}

			/*]]>*/

		</style>

		<script language="javascript">

			var bbconverter_is_running = false;

			var bbconverter_run_timer;

			var bbconverter_delay_time = 0;

			function bbconverter_grab_data() {

				var values = {};

				jQuery.each(jQuery('#bbp-converter-settings').serializeArray(), function(i, field) {

					values[field.name] = field.value;

				});

				if( values['_bbp_converter_restart'] ) {

					jQuery('#_bbp_converter_restart').removeAttr("checked");

				}

				if( values['_bbp_converter_delay_time'] ) {

					bbconverter_delay_time = values['_bbp_converter_delay_time'] * 1000;

				}

				values['action'] = 'bbconverter_process';

				values['_ajax_nonce'] = '<?php echo  wp_create_nonce( 'bbp_converter_process' ); ?>';

				return values;

			}

			function bbconverter_start() {

				if( false == bbconverter_is_running ) {

					bbconverter_is_running = true;

					jQuery('#bbp-converter-start').hide();

					jQuery('#bbp-converter-stop').show();

					jQuery('#bbp-converter-progress').show();

					bbconverter_log( '<p class="loading"><?php _e( 'Starting Conversion', 'bbpress' ); ?></p>' );

					bbconverter_run();

				}

			}

			function bbconverter_run() {

				jQuery.post(ajaxurl, bbconverter_grab_data(), function(response) {

					var response_length = response.length - 1;

					response = response.substring(0,response_length);

					bbconverter_success(response);

				});

			}

			function bbconverter_stop() {

				jQuery('#bbp-converter-start').show();

				jQuery('#bbp-converter-stop').hide();

				jQuery('#bbp-converter-progress').hide();

				jQuery('#bbp-converter-message p').removeClass( 'loading' );

				bbconverter_is_running = false;

				clearTimeout( bbconverter_run_timer );

			}

			function bbconverter_success(response) {

				bbconverter_log(response);

				if ( response == '<p class="loading"><?php _e( 'Conversion Complete', 'bbpress' ); ?></p>' || response.indexOf('error') > -1 ) {

					bbconverter_log('<p>Repair any missing information: <a href="<?php echo admin_url(); ?>tools.php?page=bbp-repair">Continue</a></p>');

					bbconverter_stop();

				} else if( bbconverter_is_running ) { // keep going

					jQuery('#bbp-converter-progress').show();

					clearTimeout( bbconverter_run_timer );

					bbconverter_run_timer = setTimeout( 'bbconverter_run()', bbconverter_delay_time );

				} else {

					bbconverter_stop();

				}

			}

			function bbconverter_log(text) {

				if ( jQuery('#bbp-converter-message').css('display') == 'none' ) {

					jQuery('#bbp-converter-message').show();

				}

				if ( text ) {

					jQuery('#bbp-converter-message p').removeClass( 'loading' );

					jQuery('#bbp-converter-message').prepend( text );

				}

			}

		</script>

		<?php

	}

	/**

	 * Wrap the converter output in paragraph tags, so styling can be applied

	 *

	 * @since bbPress (r4052)

	 *

	 * @param string $output

	 */

	private static function converter_output( $output = '' ) {

		// Get the last query

		$before = '<p class="loading">';

		$after  = '</p>';

		$query  = get_option( '_bbp_converter_query' );

		if ( ! empty( $query ) )

			$before = '<p class="loading" title="' . esc_attr( $query ) . '">';

		echo $before . $output . $after;

	}

	/**

	 * Callback processor

	 *

	 * @since bbPress (r3813)

	 */

	public function process_callback() {

		// Verify intent

		check_ajax_referer( 'bbp_converter_process' );

		if ( ! ini_get( 'safe_mode' ) ) {

			set_time_limit( 0 );

			ini_set( 'memory_limit',   '256M' );

			ini_set( 'implicit_flush', '1'    );

			ignore_user_abort( true );

		}

		// Save step and count so that it can be restarted.

		if ( ! get_option( '_bbp_converter_step' ) || ( !empty( $_POST['_bbp_converter_restart'] ) ) ) {

			update_option( '_bbp_converter_step',  1 );

			update_option( '_bbp_converter_start', 0 );

		}

		$step  = (int) get_option( '_bbp_converter_step',  1 );

		$min   = (int) get_option( '_bbp_converter_start', 0 );

		$count = (int) ! empty( $_POST['_bbp_converter_rows'] ) ? $_POST['_bbp_converter_rows'] : 100;

		$max   = ( $min + $count ) - 1;

		$start = $min;

		// Bail if platform did not get saved

		$platform = !empty( $_POST['_bbp_converter_platform' ] ) ? $_POST['_bbp_converter_platform' ] : get_option( '_bbp_converter_platform' );

		if ( empty( $platform ) )

			return;

		// Include the appropriate converter.

		$converter = bbp_new_converter( $platform );

		switch ( $step ) {

			// STEP 1. Clean all tables.

			case 1 :

				if ( !empty( $_POST['_bbp_converter_clean'] ) ) {

					if ( $converter->clean( $start ) ) {

						update_option( '_bbp_converter_step',  $step + 1 );

						update_option( '_bbp_converter_start', 0         );

						$this->sync_table( true );

						if ( empty( $start ) ) {

							$this->converter_output( __( 'No data to clean', 'bbpress' ) );

						}

					} else {

						update_option( '_bbp_converter_start', $max + 1 );

						$this->converter_output( sprintf( __( 'Deleting previously converted data (%1$s - %2$s)', 'bbpress' ), $min, $max ) );

					}

				} else {

					update_option( '_bbp_converter_step',  $step + 1 );

					update_option( '_bbp_converter_start', 0         );

				}

				break;

			// STEP 2. Convert users.

			case 2 :

				if ( !empty( $_POST['_bbp_converter_convert_users'] ) ) {

					if ( $converter->convert_users( $start ) ) {

						update_option( '_bbp_converter_step',  $step + 1 );

						update_option( '_bbp_converter_start', 0         );

						if ( empty( $start ) ) {

							$this->converter_output( __( 'No users to convert', 'bbpress' ) );

						}

					} else {

						update_option( '_bbp_converter_start', $max + 1 );

						$this->converter_output( sprintf(  __( 'Converting users (%1$s - %2$s)', 'bbpress' ), $min, $max ) );

					}

				} else {

					update_option( '_bbp_converter_step',  $step + 1 );

					update_option( '_bbp_converter_start', 0         );

				}

				break;

			// STEP 3. Clean passwords.

			case 3 :

				if ( !empty( $_POST['_bbp_converter_convert_users'] ) ) {

					if ( $converter->clean_passwords( $start ) ) {

						update_option( '_bbp_converter_step',  $step + 1 );

						update_option( '_bbp_converter_start', 0         );

						if ( empty( $start ) ) {

							$this->converter_output( __( 'No passwords to clear', 'bbpress' ) );

						}

					} else {

						update_option( '_bbp_converter_start', $max + 1 );

						$this->converter_output( sprintf( __( 'Delete users wordpress default passwords (%1$s - %2$s)', 'bbpress' ), $min, $max ) );

					}

				} else {

					update_option( '_bbp_converter_step',  $step + 1 );

					update_option( '_bbp_converter_start', 0         );

				}

				break;

			// STEP 4. Convert forums.

			case 4 :

				if ( $converter->convert_forums( $start ) ) {

					update_option( '_bbp_converter_step',  $step + 1 );

					update_option( '_bbp_converter_start', 0         );

					if ( empty( $start ) ) {

						$this->converter_output( __( 'No forums to convert', 'bbpress' ) );

					}

				} else {

					update_option( '_bbp_converter_start', $max + 1 );

					$this->converter_output( sprintf( __( 'Converting forums (%1$s - %2$s)', 'bbpress' ), $min, $max ) );

				}

				break;

			// STEP 5. Convert forum parents.

			case 5 :

				if ( $converter->convert_forum_parents( $start ) ) {

					update_option( '_bbp_converter_step',  $step + 1 );

					update_option( '_bbp_converter_start', 0         );

					if ( empty( $start ) ) {

						$this->converter_output( __( 'No forum parents to convert', 'bbpress' ) );

					}

				} else {

					update_option( '_bbp_converter_start', $max + 1 );

					$this->converter_output( sprintf( __( 'Calculating forum hierarchy (%1$s - %2$s)', 'bbpress' ), $min, $max ) );

				}

				break;

			// STEP 6. Convert topics.

			case 6 :

				if ( $converter->convert_topics( $start ) ) {

					update_option( '_bbp_converter_step',  $step + 1 );

					update_option( '_bbp_converter_start', 0         );

					if ( empty( $start ) ) {

						$this->converter_output( __( 'No topics to convert', 'bbpress' ) );

					}

				} else {

					update_option( '_bbp_converter_start', $max + 1 );

					$this->converter_output( sprintf( __( 'Converting topics (%1$s - %2$s)', 'bbpress' ), $min, $max ) );