Fix #1: Panel indexing widget

algolia.php

@@ -26,6 +26,26 @@ function algolia() {
   return Kirby\Algolia::instance();
 }
 
+// Register the Panel widget
+if(c::get('algolia.widget', true) && function_exists('panel')) {
+  $kirby->set('widget', 'algolia', __DIR__ . DS . 'widgets' . DS . 'algolia');
+
+  // Register the route for the widget
+  panel()->routes([
+    [
+      'pattern' => 'widgets/algolia/index',
+      'method'  => 'GET',
+      'filter'  => 'auth',
+      'action'  => function() {
+        algolia()->index();
+
+        panel()->notify(':)');
+        panel()->redirect('/');
+      }
+    ]
+  ]);
+}
+
 /**
  * Panel hooks
  * 

lib/algolia.php

@@ -265,6 +265,15 @@ public static function formatPage(Page $page) {
     return $data;
   }
 
+  /**
+   * Returns the number of indexable pages
+   *
+   * @return int
+   */
+  public function objectCount() {
+    return site()->index()->filter(array($this, 'isIndexable'))->count();
+  }
+
   /**
    * Returns an array of data to send to Algolia
    * Includes all whitelisted pages and formats their data according to the configuration

readme.md

@@ -105,6 +105,14 @@ If you only want to use manual indexing, you can disable the automatic indexing
 c::set('algolia.autoindex', false);
 ```
 
+#### Indexing widget
+
+The Algolia plugin includes a Panel widget that allows Panel users to manually index the site. You can disable this widget with the following option:
+
+```php
+c::set('algolia.widget', false);
+```
+
 ### Search options
 
 Algolia has [many search options](https://www.algolia.com/doc/php#full-text-search-parameters) to fine-tune the search results. You can set these in your configuration like this:
@@ -130,6 +138,8 @@ algolia()->index();
 This will create a new temporary index, upload all indexable pages and replace the main index with the temporary index.
 Please note that manual indexing will use roughly as many Algolia "Operations" as you have indexable pages each time you call the `index` method. The amount of included/free "Operations" per month depends on your Algolia plan.
 
+There is also a Panel widget for this that is enabled by default.
+
 ## Search
 
 The plugin also provides a method to query/search the index from the backend. It is generally recommended to use [Algolia's JavaScript library](https://www.algolia.com/doc/javascript#quick-start) to avoid the round-trip to your server, but you should also have a server-side fallback results page, which you can implement using the `search` method:

widgets/algolia/algolia.html.php

@@ -0,0 +1,3 @@
+<div class="dashboard-box">
+	<div class="text">Number of indexable pages: <strong><?= $count ?></strong></div>
+</div>

widgets/algolia/algolia.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Kirby;
+
+// Kirby dependencies
+use Tpl;
+
+/**
+ * Algolia indexing widget
+ * 
+ * @author Lukas Bestle <[email protected]>
+ * @license MIT
+ * @link https://getkirby.com
+ */
+
+return array(
+	'title' => [
+		'text'       => 'Search Index',
+		'compressed' => false
+	],
+	'options' => [
+		[
+			'text' => 'Manual Refresh',
+			'icon' => 'refresh',
+			'link' => purl('widgets/algolia/index')
+		]
+	],
+	'html' => function() {
+		$count = algolia()->objectCount();
+		return tpl::load(__DIR__ . DS . 'algolia.html.php', compact('count'));
+	}
+);