<?php

/**

 * During uninstall: delete all taxonomies elements and relationships

 *

 * @since 1.8.8

 *

 * ONLY WORKS IF WEBMASTER has checked "delete DB datas" in xili-language settings BEFORE deactivate and fires delete in plugins list.

 *

 */

if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) || is_multisite() ) {// must done site by site 

	echo 'impossible to erase plugin in multisite mode';

	exit();

}

// check if delete_settings is set 

$xl_settings = get_option('xili_language_settings');

if ( $xl_settings['delete_settings'] == 'delete'  ) {

	delete_taxonomies ($xl_settings);

	// Options

	delete_option('xili_language_widgets_options');

	delete_option('xili_widget_recent_comments');

	delete_option('xili_widget_recent_entries');

	delete_option('xili_language_settings');

}

function delete_taxonomies ($xl_settings) {

	// temporary register taxonomies (plugin is deactivated)

	register_taxonomy( $xl_settings['taxonomy'], 'post', array('hierarchical' => false, 'label' => false, 'rewrite' => false,   'show_ui' => false, '_builtin' => false ));

	register_taxonomy( $xl_settings['taxolangsgroup'], 'term', array('hierarchical' => false, 'update_count_callback' => '', 'show_ui' => false, 'label'=>false, 'rewrite' => false, '_builtin' => false ));

	register_taxonomy( 'link_'.$xl_settings['taxonomy'], 'link', array('hierarchical' => false, 'label' => false, 'rewrite' => false, 'show_ui' => false, '_builtin' => false ));

	// list of languages

	$languages = get_terms($xl_settings['taxonomy'], array('hide_empty' => false));

	//update_option ( 'xili_language_settings_bk', $xl_settings );

	// array postmeta lang-xx_xx

	foreach ($languages as $language ) {

		$postmeta_suffixes[] = $language->slug ;

	}

	foreach ($languages as $language )  {

		$term_id = $language->term_id;

		$post_IDs = get_objects_in_term( array( $term_id ), array( $xl_settings['taxonomy'] ) );

		foreach ( $post_IDs as $post_ID ) {

			// delete postmeta lang-xx_xx

			foreach ( $postmeta_suffixes as $postmeta_suffix ) {

				if ( $language->slug != $postmeta_suffix ) delete_post_meta( $post_ID, $xl_settings['reqtag'].'-'.$postmeta_suffix ) ;

			}

			// delete relationships posts

	 		wp_delete_object_term_relationships( $post_ID, $xl_settings['taxonomy'] );

		}

	 	wp_delete_object_term_relationships( $term_id, $xl_settings['taxolangsgroup'] );

		// link_language links

		$links = get_objects_in_term( array( $term_id ), array( 'link_'.$xl_settings['taxonomy'] ) );

		foreach ( $links as $link ) {	   

			wp_delete_object_term_relationships( $link, 'link_'.$xl_settings['taxonomy'] );

		}

		// delete terms

		$linklang = term_exists($language->slug,'link_'.$xl_settings['taxonomy']);

			if ( $linklang ) wp_delete_term( $term_id, 'link_'.$xl_settings['taxonomy'] );

		wp_delete_term( $term_id, $xl_settings['taxonomy'] );

	} 

	$term_group = term_exists( 'ev_er', 'link_'.$xl_settings['taxonomy'] ); /* special ever language for links */

	// link_language links

	$links = get_objects_in_term( array( $term_group['term_id'] ), array( 'link_'.$xl_settings['taxonomy'] ) );

	foreach ( $links as $link ) {	   

		wp_delete_object_term_relationships( $link_id, 'link_'.$xl_settings['taxonomy'] );

	}

	wp_delete_term( $term_group['term_id'], 'link_'.$xl_settings['taxonomy'] );

	// delete taxonomie groups ['taxolangsgroup'] - when count = 0

	$term_group = term_exists( 'the-langs-group', $xl_settings['taxolangsgroup'] );

	wp_delete_term( $term_group['term_id'], $xl_settings['taxolangsgroup'] );

}

?>