Add getTimezone() procedure to the API

docs/api-json-rpc.markdown

@@ -144,6 +144,33 @@ Array
 Procedures
 ----------
 
+### getTimezone
+
+- Purpose: **Get the application timezone**
+- Parameters: none
+- Result on success: **Timezone** (Example: UTC, Europe/Paris)
+- Result on failure: **Default timezone** (UTC)
+
+Request example:
+
+```json
+{
+    "jsonrpc": "2.0",
+    "method": "getTimezone",
+    "id": 1661138292
+}
+```
+
+Response example:
+
+```json
+{
+    "jsonrpc": "2.0",
+    "id": 1661138292,
+    "result": "Europe\/Paris"
+}
+```
+
 ### createProject
 
 - Purpose: **Create a new project**

jsonrpc.php

@@ -337,6 +337,13 @@ $server->register('updateSubtask', function($id, $task_id, $title = null, $user_
     return $valid && $subTaskModel->update($values);
 });
 
+/**
+ * Application procedures
+ */
+$server->register('getTimezone', function() use($configModel) {
+    return $configModel->get('application_timezone');
+});
+
 /**
  * Parse incoming requests
  */

tests/functionals/ApiTest.php

@@ -29,6 +29,7 @@ class Api extends PHPUnit_Framework_TestCase
         $service->getInstance();
 
         $pdo->exec("UPDATE settings SET value='".API_KEY."' WHERE option='api_token'");
+        $pdo->exec("UPDATE settings SET value='Europe/Paris' WHERE option='application_timezone'");
         $pdo = null;
     }
 
@@ -48,6 +49,12 @@ class Api extends PHPUnit_Framework_TestCase
         return $tasks[0]['id'];
     }
 
+    public function testGetTimezone()
+    {
+        $timezone = $this->client->getTimezone();
+        $this->assertEquals('Europe/Paris', $timezone);
+    }
+
     public function testRemoveAll()
     {
         $projects = $this->client->getAllProjects();