Refactor how we link to the web ide.

user/plugins/m3-p2/m3-p2.php

@@ -40,25 +40,28 @@ class M3P2Plugin extends Plugin
             return;
         }
 
+        // /sync
         $uri = $this->grav['uri'];
         $route = $this->config->get('plugins.m3-p2.route');
-//        throw new \Exception($route." - ".$uri->path());
-
         if ($route && $route == $uri->path()) {
             $this->enable([
-                'onPageInitialized' => ['onPageInitialized', 0]
+                'onPageInitialized' => ['onSyncPageInitialized', 0]
             ]);
         }
+
+        $this->enable([
+            'onTwigInitialized' => ['setupWebIdeUrl', 0],
+        ]);
     }
 
     /**
-     * Send user to a random page
+     * Sync with the sources.
      */
-    public function onPageInitialized()
+    public function onSyncPageInitialized()
     {
-        $out = "Opening a fortune cookie…\n\n\n";
+        // shell cwd is project root
 
-        // shell pwd is project root
+        $out = "Opening a fortune cookie…\n\n\n";
 //        $out .= shell_exec("fortune | cowsay -e Oø -f dragon") . "\n";
         $out .= shell_exec("fortune") . "\n\n";
 
@@ -67,6 +70,21 @@ class M3P2Plugin extends Plugin
 
         $out .= "Done.";
 
-        die("<pre>".$out."</pre>");  // This is all I find to write to the page.
+        die("<pre>".$out."</pre>");  // This is all I could find to write to the page.
+    }
+
+    public function setupWebIdeUrl()
+    {
+        $this->grav['twig']->twig()->addFilter(
+            new \Twig_SimpleFilter('webide_url', [$this, 'getWebIdeUrlForPage'])
+        );
+    }
+
+    public function getWebIdeUrlForPage(Page $page)
+    {
+        $url = "https://m3p2.ljbac.com/-/ide/project/m3p2/courses/edit/master/-/";
+        $url .= substr($page->filePathClean(), 11); // 11==strlen('/user/pages')
+
+        return $url;
     }
 }

user/themes/textbook/templates/textbook.html.twig

@@ -4,12 +4,11 @@
 
     {{ page.content|raw }}
 
-    {% set editor_url = "https://m3p2.ljbac.com/-/ide/project/m3p2/courses/edit/master/-/" ~ page.filePathClean | slice(11) %}
     <div class="notices blue contribution-incentive">
         <p>
             {{ 'THEME_TEXTBOOK.PAGE.FOOTER_NOTICE.CONGRATULATIONS'|t }}
             &nbsp;&nbsp;&nbsp;&nbsp;
-            <a href="{{ editor_url }}">{{ 'THEME_TEXTBOOK.PAGE.FOOTER_NOTICE.EDIT'|t }}</a>
+            <a href="{{ page | webide_url }}">{{ 'THEME_TEXTBOOK.PAGE.FOOTER_NOTICE.EDIT'|t }}</a>
         </p>
     </div>
 {% endblock %}