From 57fdd4c4423c5577b3af3ef8a9513894b827ba66 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vojt=C4=9Bch=20Sajdl?= <vojtech@sajdl.com>
Date: Tue, 2 Jan 2018 19:43:00 +0100
Subject: [PATCH] Remember locale in session

---
 footer.php |  4 +--
 locale.php | 97 +++++++++++++++++++++++++++++-------------------------
 2 files changed, 54 insertions(+), 47 deletions(-)

diff --git a/footer.php b/footer.php
index c6d7a6a..f15eca3 100644
--- a/footer.php
+++ b/footer.php
@@ -1,7 +1,7 @@
 <?php 
 function render_footer($admin = false)
 {
-  global $best_match, $lang_names;
+  global $lang_names;
   ?>
   </div>
   <div id="footerwrap">
@@ -10,7 +10,7 @@ function render_footer($admin = false)
         <div class="col-md-4 text-left">Copyright © <?php echo date("Y");?> Vojtěch Sajdl</div>
         <div class="col-md-4 text-center">
           <div class="btn-group dropup">
-            <button type="button" class="btn btn-primary"><?php echo '<img src="'.WEB_URL.'/locale/'.$best_match.'/flag.png" alt="'.$lang_names[$best_match].'">'.$lang_names[$best_match];?></button>
+            <button type="button" class="btn btn-primary"><?php echo '<img src="'.WEB_URL.'/locale/'.$_SESSION['locale'].'/flag.png" alt="'.$lang_names[$_SESSION['locale']].'">'.$lang_names[$_SESSION['locale']];?></button>
             <button type="button" class="btn btn-primary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
               <span class="caret"></span>
               <span class="sr-only"><?php echo _("Toggle Dropdown");?></span>
diff --git a/locale.php b/locale.php
index 62f5a16..cd641ca 100644
--- a/locale.php
+++ b/locale.php
@@ -5,64 +5,71 @@ function mb_ucfirst($string)
     return mb_strtoupper(mb_substr($string, 0, 1)).mb_strtolower(mb_substr($string, 1));
 }
 
+if (!isset($_SESSION['locale'])||isset($_GET['lang']))
+{
+	if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
+	    preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
 
-if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
-    preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
+	    if (count($lang_parse[1])) {
+	        $langs = array_combine($lang_parse[1], $lang_parse[4]);
+	    	
+	        foreach ($langs as $lang => $val) {
+	            if ($val === '') $langs[$lang] = 1;
+	        }
 
-    if (count($lang_parse[1])) {
-        $langs = array_combine($lang_parse[1], $lang_parse[4]);
-    	
-        foreach ($langs as $lang => $val) {
-            if ($val === '') $langs[$lang] = 1;
-        }
+	        if (isset($_GET['lang']))
+	        {
+	        	$langs[$_GET['lang']] = 2;
+	        }
 
-        if (isset($_GET['lang']))
-        {
-        	$langs[$_GET['lang']] = 2;
-        }
+	        arsort($langs, SORT_NUMERIC);
+	    }
+	}
 
-        arsort($langs, SORT_NUMERIC);
-    }
-}
 
-$langs = array_flip($langs);
-$accepted_langs = glob(__DIR__ . '/locale/*' , GLOB_ONLYDIR);
-$lang_names = array();
-foreach ($accepted_langs as $key => $value) {
-	$accepted_langs[$key] = basename($value);
-}
 
-$best_match = false;
+	$langs = array_flip($langs);
+	$accepted_langs = glob(__DIR__ . '/locale/*' , GLOB_ONLYDIR);
+	$lang_names = array();
+	foreach ($accepted_langs as $key => $value) {
+		$accepted_langs[$key] = basename($value);
+	}
 
-foreach ($langs as $lang) {
-	if (strlen($lang)>2){
-		if (in_array($lang, $accepted_langs)){
-			$best_match = $lang;
-			break;
-		}
-	}else{
-		$possible = array_filter($accepted_langs, function($key) {
-			global $lang;
-		    return strpos($key, $lang) === 0;
-		});
+	$best_match = false;
 
-		if (count($possible)){
-			$best_match = $possible[0];
-			break;
+	foreach ($langs as $lang) {
+		if (strlen($lang)>2){
+			if (in_array($lang, $accepted_langs)){
+				$best_match = $lang;
+				break;
+			}
+		}else{
+			$possible = array_filter($accepted_langs, function($key) {
+				global $lang;
+			    return strpos($key, $lang) === 0;
+			});
+
+			if (count($possible)){
+				$best_match = $possible[0];
+				break;
+			}
 		}
 	}
+
+	foreach ($accepted_langs as $lang) {
+		$lang_names[$lang] = mb_ucfirst(locale_get_display_language($lang, $lang));
+	}
+
+	if ($best_match === false){
+		$best_match = DEFAULT_LANGUAGE;
+	}
+
+	$_SESSION['locale'] = $best_match;
 }
 
-foreach ($accepted_langs as $lang) {
-	$lang_names[$lang] = mb_ucfirst(locale_get_display_language($lang, $lang));
-}
 
-if ($best_match === false){
-	$best_match = DEFAULT_LANGUAGE;
-}
-
-setlocale(LC_ALL, $best_match.".UTF-8");
+setlocale(LC_ALL, $_SESSION['locale'].".UTF-8");
 
 bindtextdomain("server-status", __DIR__ . "/locale/");
-bind_textdomain_codeset($best_match, "utf-8"); 
+bind_textdomain_codeset($_SESSION['locale'], "utf-8"); 
 textdomain("server-status");
\ No newline at end of file