Refactor server variables page

Signed-off-by: Madhura Jayaratne <madhura.cj@gmail.com>

server_variables.php

@@ -1,97 +1,32 @@
 <?php
 /* vim: set expandtab sw=4 ts=4 sts=4: */
+
 /**
- * Server variables
+ * Handles server variables page.
  *
  * @package PhpMyAdmin
  */
 
-use PMA\libraries\Message;
-use PMA\libraries\Util;
+namespace PMA;
+
+use PMA\libraries\controllers\ServerVariablesController;
+use PMA\libraries\Response;
 
 require_once 'libraries/common.inc.php';
-require_once 'libraries/server_variables.lib.php';
 
-$response = PMA\libraries\Response::getInstance();
-$header   = $response->getHeader();
-$scripts  = $header->getScripts();
-$scripts->addFile('server_variables.js');
+$container = libraries\di\Container::getDefaultContainer();
+$container->factory(
+    'PMA\libraries\controllers\ServerVariablesController'
+);
+$container->alias(
+    'ServerVariablesController',
+    'PMA\libraries\controllers\ServerVariablesController'
+);
+$container->set('PMA\libraries\Response', Response::getInstance());
+$container->alias('response', 'PMA\libraries\Response');
 
-/**
- * Does the common work
- */
-require 'libraries/server_common.inc.php';
-
-/**
- * Array of documentation links
- */
-$variable_doc_links = PMA_getArrayForDocumentLinks();
-
-/**
- * Ajax request
- */
-
-if (isset($_REQUEST['ajax_request']) && $_REQUEST['ajax_request'] == true) {
-    if (isset($_REQUEST['type'])) {
-        if ($_REQUEST['type'] === 'getval') {
-            PMA_getAjaxReturnForGetVal($variable_doc_links);
-        } else if ($_REQUEST['type'] === 'setval') {
-            PMA_getAjaxReturnForSetVal($variable_doc_links);
-        }
-        exit;
-    }
-}
-
-/**
- * Displays the sub-page heading
- */
-$doc_link = PMA\libraries\Util::showMySQLDocu('server_system_variables');
-$response->addHtml(PMA_getHtmlForSubPageHeader('variables', $doc_link));
-
-/**
- * Sends the queries and buffers the results
- */
-$serverVarsResult = $GLOBALS['dbi']->tryQuery('SHOW SESSION VARIABLES;');
-
-if ($serverVarsResult !== false) {
-
-    $serverVarsSession = array();
-    while ($arr = $GLOBALS['dbi']->fetchRow($serverVarsResult)) {
-        $serverVarsSession[$arr[0]] = $arr[1];
-    }
-    $GLOBALS['dbi']->freeResult($serverVarsResult);
-
-    $serverVars = $GLOBALS['dbi']->fetchResult('SHOW GLOBAL VARIABLES;', 0, 1);
-
-    /**
-     * Link templates
-     */
-    $response->addHtml(PMA_getHtmlForLinkTemplates());
-
-    /**
-     * Displays the page
-     */
-    $response->addHtml(
-        PMA_getHtmlForServerVariables(
-            $variable_doc_links, $serverVars, $serverVarsSession
-        )
-    );
-} else {
-    /**
-     * Display the error message
-     */
-    $response->addHTML(
-        Message::error(
-            sprintf(
-                __('Not enough privilege to view server variables and settings. %s'),
-                Util::showMySQLDocu(
-                    'server-system-variables',
-                    false,
-                    'sysvar_show_compatibility_56'
-                )
-            )
-        )->getDisplay()
-    );
-}
-
-exit;
+/** @var ServerVariablesController $controller */
+$controller = $container->get(
+    'ServerVariablesController', array()
+);
+$controller->indexAction();