Allow users to change their Language via the Edit Profile page.

PHPCI/Controller/UserController.php

@@ -66,22 +66,34 @@ class UserController extends Controller
     {
         $user = $_SESSION['phpci_user'];
 
-        $this->layout->title = $user->getName();
-        $this->layout->subtitle = Lang::get('edit_profile');
-
         if ($this->request->getMethod() == 'POST') {
             $name = $this->getParam('name', null);
             $email = $this->getParam('email', null);
             $password = $this->getParam('password', null);
 
+            $currentLang = Lang::getLanguage();
+            $chosenLang = $this->getParam('language', $currentLang);
+
+            if ($chosenLang !== $currentLang) {
+                setcookie('phpcilang', $chosenLang, time() + (10 * 365 * 24 * 60 * 60), '/');
+                Lang::setLanguage($chosenLang);
+            }
+
             $_SESSION['phpci_user'] = $this->userService->updateUser($user, $name, $email, $password);
             $user = $_SESSION['phpci_user'];
 
             $this->view->updated = 1;
         }
 
+        $this->layout->title = $user->getName();
+        $this->layout->subtitle = Lang::get('edit_profile');
+
         $values = $user->getDataArray();
 
+        if (array_key_exists('phpcilang', $_COOKIE)) {
+            $values['language'] = $_COOKIE['phpcilang'];
+        }
+
         $form = new Form();
         $form->setAction(PHPCI_URL.'user/profile');
         $form->setMethod('POST');
@@ -107,6 +119,14 @@ class UserController extends Controller
         $password->setRequired(false);
         $form->addField($password);
 
+        $lang = new Form\Element\Select('language');
+        $lang->setClass('form-control');
+        $lang->setContainerClass('form-group');
+        $lang->setLabel(Lang::get('language'));
+        $lang->setRequired(true);
+        $lang->setOptions(Lang::getLanguageOptions());
+        $form->addField($lang);
+
         $submit = new Form\Element\Submit();
         $submit->setClass('btn btn-success');
         $submit->setValue(Lang::get('save'));

PHPCI/Helper/Lang.php

@@ -19,6 +19,7 @@ class Lang
 {
     protected static $language = null;
     protected static $strings = array();
+    protected static $languages = array();
 
     /**
      * Get a specific string from the language file.
@@ -54,6 +55,31 @@ class Lang
         return self::$language;
     }
 
+    public static function setLanguage($language)
+    {
+        if (in_array($language, self::$languages)) {
+            self::$language = $language;
+            self::$strings = self::loadLanguage();
+            return;
+        }
+    }
+
+    /**
+     * Return a list of available languages and their names.
+     * @return array
+     */
+    public static function getLanguageOptions()
+    {
+        $languages = array();
+
+        foreach (self::$languages as $language) {
+            require(PHPCI_DIR . 'PHPCI/Languages/lang.' . $language . '.php');
+            $languages[$language] = $strings['language_name'];
+        }
+
+        return $languages;
+    }
+
     /**
      * Get the strings for the currently active language.
      * @return string[]
@@ -69,6 +95,24 @@ class Lang
      */
     public static function init(Config $config)
     {
+        $matches = array();
+        foreach (glob(PHPCI_DIR . 'PHPCI/Languages/lang.*.php') as $file) {
+            if (preg_match('/lang\.([a-z]{2}\-?[a-z]*)\.php/', $file, $matches)) {
+                self::$languages[] = $matches[1];
+            }
+        }
+
+        // Try cookies first:
+        if (isset($_COOKIE) && array_key_exists('phpcilang', $_COOKIE)) {
+            $language = $_COOKIE['phpcilang'];
+
+            if (in_array($language, self::$languages)) {
+                self::$language = $language;
+                self::$strings = self::loadLanguage();
+                return;
+            }
+        }
+
         // Try user language:
         if (isset($_SERVER) && array_key_exists('HTTP_ACCEPT_LANGUAGE', $_SERVER)) {
             $langs = explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
@@ -76,27 +120,26 @@ class Lang
             foreach ($langs as $lang) {
                 $parts = explode(';', $lang);
 
-                self::$language = strtolower($parts[0]);
-                self::$strings = self::loadLanguage();
+                $language = strtolower($parts[0]);
 
-                if (!is_null(self::$strings)) {
+                if (in_array($language, self::$languages)) {
+                    self::$language = $language;
+                    self::$strings = self::loadLanguage();
                     return;
                 }
             }
         }
 
         // Try the installation default language:
-        self::$language = $config->get('phpci.default_language', null);
+        $language = $config->get('phpci.default_language', null);
 
-        if (!is_null(self::$language)) {
+        if (in_array($language, self::$languages)) {
+            self::$language = $language;
             self::$strings = self::loadLanguage();
-
-            if (!is_null(self::$strings)) {
-                return;
-            }
+            return;
         }
 
-        // Fall back to en-GB:
+        // Fall back to English:
         self::$language = 'en';
         self::$strings = self::loadLanguage();
     }

PHPCI/Languages/lang.en.php

@@ -8,6 +8,9 @@
  */
 
 $strings = array(
+    'language_name' => 'English',
+    'language' => 'Language',
+
     // Log in:
     'log_in_to_phpci' => 'Log in to PHPCI',
     'login_error' => 'Incorrect email address or password',

PHPCI/Languages/lang.fr.php

@@ -8,6 +8,9 @@
  */
 
 $strings = array(
+    'language_name' => 'Français',
+    'language' => 'Langue',
+
     // Log in:
     'log_in_to_phpci' => 'Connectez-vous à PHPCI',
     'login_error' => 'Adresse email ou mot de passe invalide',

PHPCI/Languages/lang.ru.php

@@ -8,6 +8,9 @@
  */
 
 $strings = array(
+    'language_name' => 'Pусский',
+    'language' => 'язык',
+
     // Log in:
     'log_in_to_phpci' => 'Войти в PHPCI',
     'login_error' => 'Неправильный email или пароль',