<?php

/*

Plugin Name: ZdMultiLang

Plugin URI: http://blog.zen-dreams.com/en/zdmultilang

Description: This plugin adds multilingual capabilities to wordpress

Version: 1.2.5

Author: Anthony PETITBOIS, Pau Sanchez

Author URI: http://www.zen-dreams.com/

Copyright 2008  Anthony PETITBOIS  (email : anthony@zen-dreams.com)

    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

*/

$ZdmlCache=array();

$BaseURL=$_SERVER['PHP_SELF'].'?page='.plugin_basename (__FILE__);

$default_language_option="zd_multilang_defaultlanguage";

$insert_lang_switch_option="zd_multilang_lang_switcher";

$show_flags_option="zd_multilang_show_flags";

$show_languages_option="zd_multilang_langnames";

$lang_switcher_class_option="zd_multilang_switcher_class";

$permalink_default="zd_multilang_permalink_def";

$display_untranslated="zd_multilang_display_untranslated";

$display_google_translate="zd_multilang_display_glink";

$display_original_option="zd_multilang_display_original";

$keep_separate_comments="zd_multilang_keep_separate_comments";

$Allowed_Access="zd_multilang_access";

$Autosave_Option="zdmultilang_autosave";

$CurrentLanguagePermalink="";

$PluginDIR = '../'.PLUGINDIR . '/' . dirname(plugin_basename (__FILE__));

load_plugin_textdomain('zd_multilang',PLUGINDIR . '/' . dirname(plugin_basename (__FILE__)) . '/lang');

register_activation_hook(__FILE__,'zd_multilang_install');

add_action('admin_menu', 'zd_multilang_add_pages');

add_filter('get_term', 'zd_multilang_translate_term',2);	// Translate single terms

add_filter('admin_head','zd_multilang_tinymce');

add_filter('the_category','zd_multilang_translate_link_cat');  // Categories for posts

add_filter('get_pages','zd_multilang_translate_post');  // Translation of Pages

add_filter('get_tags','zd_multilang_translate_tags');  // Translation of tags

add_filter('list_cats','zd_multilang_translate_cat');	 // Categories for lists (widget)

add_filter('get_bookmarks','zd_multilang_translate_bookmarks');

add_filter('wp_list_bookmarks','zd_multilang_translate_list_bookmarks');

add_filter('wp_tag_cloud','zd_multilang_translate_link_cat');

add_filter('category_description','zd_multilang_cat_desc',10,2);

add_filter('get_categories','zd_multilang_cat');

add_filter('the_posts','zd_multilang_translate_post',10,1);

add_filter('query_vars', 'zd_multilang_queryvars');

add_filter('rewrite_rules_array', 'zd_multilang_rewrite');

add_filter('next_post_link','zd_multilang_postlink');

add_filter('previous_post_link','zd_multilang_postlink');

add_filter('post_link','zd_multilang_permalink',1);

add_filter('page_link','zd_multilang_permalink',1);

add_filter('category_link','zd_multilang_permalink',1);

add_filter('get_category','zd_multilang_cat',1);

add_filter('tag_link','zd_multilang_permalink',1);

add_filter('year_link','zd_multilang_permalink',1);

add_filter('month_link','zd_multilang_permalink',1);

add_filter('day_link','zd_multilang_permalink',1);

add_filter('feed_link','zd_multilang_permalink',1);

add_filter('author_link','zd_multilang_permalink',1);

add_filter('wp','zd_multilang_set_locale');

add_filter('manage_posts_columns', 'zd_multilang_manage_col_def');

add_filter('manage_pages_columns', 'zd_multilang_manage_col_def');

add_filter('posts_where','zd_multilang_where_filter');

add_filter('get_next_post_where','zd_multilang_np_where_filter');

add_filter('get_previous_post_where','zd_multilang_np_where_filter');

/* Filters for comments */

add_action ('wp_insert_comment', 'zd_multilang_insert_comment', 10, 2);

add_action ('delete_comment', 'zd_multilang_delete_comment');

add_filter ('comments_array','zd_multilang_comments_array', 10, 2);

add_filter ('get_comments_number', 'zd_multilang_get_comments_number');

/* Options short circuit */

add_filter('option_blogname','zd_multilang_blogname');

add_filter('option_blogdescription','zd_multilang_blogdescription');

/* Options short circuit */

add_action('manage_posts_custom_column', 'zd_multilang_manage_col', 10, 2);

add_action('manage_pages_custom_column', 'zd_multilang_manage_col', 10, 2);

add_action('media_buttons', 'zd_media_button', 30);

/** Action handler for autosave feature **/

add_action('wp_ajax_zdmultilang_autosave', 'zd_multilang_autosave');

//add_action('wp_ajax_nopriv_my_special_action', 'my_action_callback');

zd_multilang_set_locale("");

function zd_multilang_tinymce() {

	if (($_GET['fct']=="posts")||($_POST['fct']=="posts")) {

		wp_enqueue_script( 'common' );

		wp_enqueue_script( 'jquery-color' );

		wp_print_scripts('editor');

		if (function_exists('add_thickbox')) add_thickbox();

		wp_print_scripts('media-upload');

		if (function_exists('wp_tiny_mce')) wp_tiny_mce();

		wp_admin_css();

		wp_enqueue_script('utils');

		do_action("admin_print_styles-post-php");

		do_action('admin_print_styles');

	}

}

function zd_multilang_queryvars( $qvars ) {

  $qvars[] = 'lang';

  return $qvars;

}

function zd_multilang_manage_col_def ($cols) {

	$cols['translate']=__('Translate','zd_multilang');

	return $cols;

}

function zd_multilang_manage_col($column_name, $id) {

	global $ZdmlCache, $PluginDIR;

	$BaseURL='admin.php?page='.plugin_basename (__FILE__);

	if( $column_name == 'translate' ) {

		if ($ZdmlCache['Languages']) foreach ($ZdmlCache['Languages'] as $Permalink => $LanguageID) {

			if ($LanguageID!=$ZdmlCache['DefLang']) echo '<a href="'.$BaseURL.'&amp;fct=posts&amp;id='.$id.'.'.$LanguageID.'"><img src="'.$PluginDIR.'/flags/'.$LanguageID.'.png" alt="'.$LanguageID.'" title="'.$LanguageID.'"></a> ';

		}

	}

}

function zd_media_button() {

	global $ZdmlCache, $PluginDIR;

	$id=$_GET['post'];

	if ($id) {

		$BaseURL='admin.php?page='.plugin_basename (__FILE__);

		if ($ZdmlCache['Languages']) foreach ($ZdmlCache['Languages'] as $Permalink => $LanguageID) {

			if ($LanguageID!=$ZdmlCache['DefLang']) echo '<a href="'.$BaseURL.'&amp;fct=posts&amp;id='.$id.'.'.$LanguageID.'" target="_blank" title="'.__('Translate','zd_multilang').'"><img src="'.$PluginDIR.'/flags/'.$LanguageID.'.png" alt="'.$LanguageID.'" title="'.$LanguageID.'"></a>';

		}

	}

}

function zd_multilang_where_filter($filter) {

	global $ZdmlCache, $locale,$display_untranslated, $wpdb, $wp_query;

	if ((get_option('show_on_front')=='page')&&(is_array($wp_query->query))&&(count($wp_query->query)<=1)&&(isset($wp_query->query['lang']))) {

		$lang=$WP->query['lang'];

		$filter=" AND ".$wpdb->posts.".ID = ".get_option('page_on_front');

		$wp_query->is_page=1;

		$wp_query->is_home=0;

	}

	if ($locale==$ZdmlCache['DefLang']) return $filter;

	if (get_option($display_untranslated)=="hide") {

		$filter.=" AND ".$wpdb->posts.".ID in (".$ZdmlCache['TranslatedPosts'][$locale].')';

	}

	return $filter;

}

function zd_multilang_np_where_filter($filter) {

	global $ZdmlCache, $locale,$display_untranslated, $wpdb;

	if ($locale==$ZdmlCache['DefLang']) return $filter;

	if (get_option($display_untranslated)=="hide") {

		$filter.=" AND p.ID in (".$ZdmlCache['TranslatedPosts'][$locale].')';

	}

	return $filter;

}

function zd_multilang_set_locale($WP) {

	global $wp_query,$wpdb, $wp_rewrite,$default_language_option,$locale,$CurrentLanguagePermalink,$CurrentLang;

	global $ZdmlCache;

	$language_table=$wpdb->prefix.'zd_ml_langs';

	$termtrans=$wpdb->prefix.'zd_ml_termtrans';

	$posttrans=$wpdb->prefix.'zd_ml_trans';

	$linktrans=$wpdb->prefix.'zd_ml_linktrans';

	$ZdmlCache['DefLang']=get_option("zd_multilang_defaultlanguage");

	$ZdmlCache['InsertInPosts']=get_option("zd_multilang_lang_switcher");

	$ZdmlCache['ShowLanguages']=get_option("zd_multilang_langnames");

	$ZdmlCache['ShowFlags']=get_option("zd_multilang_show_flags");

	$ZdmlCache['SwitcherPosition']=get_option('zd_multilang_position');

	$ZdmlCache['Lang_Switch_Class']=(get_option("zd_multilang_switcher_class")!="") ? get_option("zd_multilang_switcher_class") : "lang_switch";

	$TheLocale=$ZdmlCache['DefLang'];

	if (!isset($ZdmlCache['Languages'])) {

		$query="SELECT * FROM $language_table ORDER BY LanguageName";

		$results=$wpdb->get_results($query, ARRAY_A);

		if ($results) {

			foreach ($results as $ID => $V) {

				$ZdmlCache['Languages'][$V['LangPermalink']]=$V['LanguageID'];

				$ZdmlCache['LanguageNames'][$V['LangPermalink']]=$V['LanguageName'];

				$ZdmlCache['Options'][$V['LanguageID']]['blogname']=$V['BlogName'];

				$ZdmlCache['Options'][$V['LanguageID']]['blogdescription']=$V['BlogDescription'];

			}

		}

	}	

	 else {

		foreach ($ZdmlCache['Languages'] as $Permalink => $LangID) {

			$results[$i]['LangPermalink']=$Permalink;

			$results[$i]['LanguageID']=$LangID;

			$i++;

		}

	}

	if ($_SERVER['HTTPS']) $QUERY="https://".$_SERVER['HTTP_HOST'];

	else $QUERY="http://".$_SERVER['HTTP_HOST'];

	$QUERY.=$_SERVER['REQUEST_URI'];

	if ($results) {

		foreach ($results as $ID => $Lang) {

			$regexp.=$Lang['LangPermalink']."|";

		}

		$regexp=substr($regexp, 0, -1);

	}

	if (strstr($QUERY,"?")) $RegularExpression="`".get_bloginfo('url')."\/.*lang=($regexp)(.*)?`U";

	else $RegularExpression="`".get_bloginfo('url')."\/($regexp)\/(.*)?`U";

	if (preg_match($RegularExpression,$QUERY,$res)==TRUE) {

		$Lang=$res[1];

		$CurrentLanguagePermalink=$res[1];

		foreach ($ZdmlCache['Languages'] as $Permalink => $LangFound) {

			if ($Permalink==$Lang) {

				$Language= $LangFound;

				break;

			}

		}

		$CurrentLang=$Language;

		if ($Language) $TheLocale=$Language;

	}

	$locale=$TheLocale;

	if (!isset($ZdmlCache['Terms'])) {

		$query="SELECT tt.LanguageID, tt.name as t_name, tt.description as description, t.* FROM $termtrans tt RIGHT JOIN ".$wpdb->prefix."terms t on (tt.term_id=t.term_id)";

		$term=$wpdb->get_results($query, ARRAY_A);

		foreach ($term as $ID => $Value) {

			if ($Value['t_name']!=NULL) $ZdmlCache['Terms'][$Value['term_id']][$Value['LanguageID']]['name']=$Value['t_name'];

			else $ZdmlCache['Terms'][$Value['term_id']][$Value['LanguageID']]['name']=$Value['name'];

			$ZdmlCache['Terms'][$Value['term_id']][$Value['LanguageID']]['o_name']=$Value['name'];

			$ZdmlCache['Terms'][$Value['term_id']][$Value['LanguageID']]['description']=$Value['description'];

		}

	}

	if (!isset($ZdmlCache['Links'])) {

		$query="SELECT * from $linktrans";

		$links=$wpdb->get_results($query);

		foreach ($links as $id => $Values) {

			$ZdmlCache['Links'][$Values->link_id][$Values->LanguageID]['name']=$Values->link_name;

			$ZdmlCache['Links'][$Values->link_id][$Values->LanguageID]['url']=$Values->link_url;

			$ZdmlCache['Links'][$Values->link_id][$Values->LanguageID]['description']=$Values->link_description;

		}

	}

	if (!isset($ZdmlCache['TranslatedPosts'])) {

		if ($ZdmlCache['Languages']) foreach ($ZdmlCache['Languages'] as $Permalink => $LangID) {

			if ($LangID!=$ZdmlCache['DefLang']) {

				$query="SELECT ID from $posttrans WHERE LanguageID='$LangID' and post_status='published'";

				$res=$wpdb->get_results($query, ARRAY_A);

				if ($res) {

					$ZdmlCache['TranslatedPosts'][$LangID]="";

					foreach ($res as $key => $V) {

						$ZdmlCache['TranslatedPosts'][$LangID].=$V['ID'].",";

					}

					$ZdmlCache['TranslatedPosts'][$LangID]=substr($ZdmlCache['TranslatedPosts'][$LangID],0,-1);

				}

			}

		}

	}

	return $WP;

}

function zd_multilang_permalink($permalink) {

	global $wpdb, $wp_rewrite,$default_language_option, $CurrentLanguagePermalink,$CurrentLang,$permalink_default, $locale, $wp_query;

	global $ZdmlCache;

	$langstable=$wpdb->prefix.'zd_ml_langs';

	$Lang=$CurrentLanguagePermalink;

	if ($Lang=="") {

		$CurrentLang=$ZdmlCache['DefLang'];

		$query="SELECT LangPermalink FROM $langstable where LanguageID='$CurrentLang'";

		$CurrentLanguagePermalink=$wpdb->get_var($query);

		$Lang=$CurrentLanguagePermalink;

	}

	$link=$permalink;

	$PermalinkDef=get_option($permalink_default);

	if (($PermalinkDef=="no")&&($ZdmlCache['DefLang']==$locale)) return $link;

	if ($wp_rewrite->using_permalinks()) {

		$url=get_bloginfo('url');

		$end=substr($link,strlen($url));

		if ($Lang=="") $link=$url.$end;

		else $link=$url.'/'.$Lang.$end;

	} else if ($Lang) $link.= ((!strpos($link,'?'))? '?': '') ."&lang=".$Lang;

	return $link;

}

function zd_multilang_rewrite($permalink_structure) {

	global $ZdmlCache;

	global $wpdb, $wp_rewrite;

	$langs=$wpdb->prefix.'zd_ml_langs';

	$query="SELECT * FROM $langs order by LanguageID";

	$Lines=$wpdb->get_results($query, ARRAY_A);

	if ($Lines) {

		$regexp='(';

		foreach ($Lines as $Value) {

			$regexp.=$Value['LangPermalink'].'|';

		}

		$regexp=substr($regexp,0,-1);

		$regexp.=')';

		if ($permalink_structure) foreach ($permalink_structure as $Rule => $Definition) {

			$def=explode('?',$Definition);

			$rule=$Definition;

			if (preg_match_all('/(.*matches)\[([0-9]+)\]/U',$rule,$res)) {

				$rule="";

				foreach ($res[1] as $index => $text) {

					$rule.=$text.'['.($index+2).']';

				}

			}

			$rule.='&lang=$matches[1]';

			$new_rules[$regexp.'/'.$Rule]=$rule;

		}

		$new_rules2[$regexp.'/?']='index.php?lang=$matches[1]';

		if ($permalink_structure) $permalink_structure = $new_rules+ $new_rules2 + $permalink_structure;

	}

	return $permalink_structure;

}

function zd_multilang_is_translated($id, $lang) {

	global $ZdmlCache, $locale;

	if ($lang==$ZdmlCache['DefLang']) return TRUE;

	$Posts=explode(',',$ZdmlCache['TranslatedPosts'][$lang]);

	foreach ($Posts as $key => $ID) {

		if ($ID==$id) {

			return TRUE;

		}

	}

	return FALSE;

}

function zd_multilang_install() {

	global $ZdmlCache;

	global $wpdb;

	$termtrans=$wpdb->prefix.'zd_ml_termtrans';

	$langs=$wpdb->prefix.'zd_ml_langs';

	$posttrans=$wpdb->prefix.'zd_ml_trans';

	$linktrans=$wpdb->prefix.'zd_ml_linktrans';

	$commenttrans=$wpdb->prefix.'zd_ml_comments';

	$dbversion=get_option('zd_multilang_dbschema');

	if ($dbversion<"125") {

		$sql="CREATE TABLE $langs (

			LanguageID varchar(5) NOT NULL,

			LanguageName varchar(100) character set utf8 NOT NULL,

			LangPermalink varchar(50) NOT NULL UNIQUE,

			BlogName longtext,

			BlogDescription longtext,

			primary key (LanguageID)

		);";

		require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

		dbDelta($sql);

		$sql="CREATE TABLE $termtrans (

			term_id varchar(5) NOT NULL,

			LanguageID varchar(5) NOT NULL,

			name varchar(255) character set utf8 NOT NULL,

			description longtext NOT NULL,

			primary key (term_id,LanguageID)

		);";

		require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

		dbDelta($sql);