Show profile link for @username mentions

app/Controller/User.php

@@ -57,6 +57,28 @@ class User extends Base
         )));
     }
 
+    /**
+     * Public user profile
+     *
+     * @access public
+     */
+    public function profile()
+    {
+        $user = $this->user->getById($this->request->getIntegerParam('user_id'));
+
+        if (empty($user)) {
+            $this->notfound();
+        }
+
+        $this->response->html(
+            $this->template->layout('user/profile', array(
+                'board_selector' => $this->projectUserRole->getProjectsByUser($this->userSession->getId()),
+                'title' => $user['name'] ?: $user['username'],
+                'user' => $user,
+            )
+        ));
+    }
+
     /**
      * Display a form to create a new user
      *

app/Core/Markdown.php

@@ -3,7 +3,7 @@
 namespace Kanboard\Core;
 
 use Parsedown;
-use Kanboard\Helper\Url;
+use Pimple\Container;
 
 /**
  * Specific Markdown rules for Kanboard
@@ -14,22 +14,51 @@ use Kanboard\Helper\Url;
  */
 class Markdown extends Parsedown
 {
-    private $link;
-    private $helper;
+    /**
+     * Link params for tasks
+     *
+     * @access private
+     * @var array
+     */
+    private $link = array();
 
-    public function __construct($link, Url $helper)
+    /**
+     * Container
+     *
+     * @access private
+     * @var Container
+     */
+    private $container;
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  Container  $container
+     * @param  array      $link
+     */
+    public function __construct(Container $container, array $link)
     {
         $this->link = $link;
-        $this->helper = $helper;
+        $this->container = $container;
         $this->InlineTypes['#'][] = 'TaskLink';
-        $this->inlineMarkerList .= '#';
+        $this->InlineTypes['@'][] = 'UserLink';
+        $this->inlineMarkerList .= '#@';
     }
 
-    protected function inlineTaskLink($Excerpt)
+    /**
+     * Handle Task Links
+     *
+     * Replace "#123" by a link to the task
+     *
+     * @access public
+     * @param  array  $Excerpt
+     * @return array
+     */
+    protected function inlineTaskLink(array $Excerpt)
     {
-        // Replace task #123 by a link to the task
         if (! empty($this->link) && preg_match('!#(\d+)!i', $Excerpt['text'], $matches)) {
-            $url = $this->helper->href(
+            $url = $this->container['helper']->url->href(
                 $this->link['controller'],
                 $this->link['action'],
                 $this->link['params'] + array('task_id' => $matches[1])
@@ -40,7 +69,38 @@ class Markdown extends Parsedown
                 'element' => array(
                     'name' => 'a',
                     'text' => $matches[0],
-                    'attributes' => array('href' => $url)));
+                    'attributes' => array('href' => $url)
+                ),
+            );
+        }
+    }
+
+    /**
+     * Handle User Mentions
+     *
+     * Replace "@username" by a link to the user
+     *
+     * @access public
+     * @param  array  $Excerpt
+     * @return array
+     */
+    protected function inlineUserLink(array $Excerpt)
+    {
+        if (preg_match('/^@([^\s]+)/', $Excerpt['text'], $matches)) {
+            $user_id = $this->container['user']->getIdByUsername($matches[1]);
+
+            if (! empty($user_id)) {
+                $url = $this->container['helper']->url->href('user', 'profile', array('user_id' => $user_id));
+
+                return array(
+                    'extent' => strlen($matches[0]),
+                    'element' => array(
+                        'name' => 'a',
+                        'text' => $matches[0],
+                        'attributes' => array('href' => $url, 'class' => 'user-mention-link'),
+                    ),
+                );
+            }
         }
     }
 }

app/Helper/Text.php

@@ -3,14 +3,15 @@
 namespace Kanboard\Helper;
 
 use Kanboard\Core\Markdown;
+use Kanboard\Core\Base;
 
 /**
- * Text helpers
+ * Text Helpers
  *
  * @package helper
  * @author  Frederic Guillot
  */
-class Text extends \Kanboard\Core\Base
+class Text extends Base
 {
     /**
      * Markdown transformation
@@ -21,7 +22,7 @@ class Text extends \Kanboard\Core\Base
      */
     public function markdown($text, array $link = array())
     {
-        $parser = new Markdown($link, $this->helper->url);
+        $parser = new Markdown($this->container, $link);
         $parser->setMarkupEscaped(MARKDOWN_ESCAPE_HTML);
         return $parser->text($text);
     }

app/ServiceProvider/RouteProvider.php

@@ -153,6 +153,7 @@ class RouteProvider implements ServiceProviderInterface
 
             // Users
             $container['router']->addRoute('users', 'user', 'index');
+            $container['router']->addRoute('user/profile/:user_id', 'user', 'profile', array('user_id'));
             $container['router']->addRoute('user/show/:user_id', 'user', 'show', array('user_id'));
             $container['router']->addRoute('user/show/:user_id/timesheet', 'user', 'timesheet', array('user_id'));
             $container['router']->addRoute('user/show/:user_id/last-logins', 'user', 'last', array('user_id'));

app/Template/user/profile.php

@@ -0,0 +1,8 @@
+<section id="main">
+    <br>
+    <ul class="listing">
+        <li><?= t('Username:') ?> <strong><?= $this->e($user['username']) ?></strong></li>
+        <li><?= t('Name:') ?> <strong><?= $this->e($user['name']) ?: t('None') ?></strong></li>
+        <li><?= t('Email:') ?> <strong><?= $this->e($user['email']) ?: t('None') ?></strong></li>
+    </ul>
+</section>