Add user activity system

src/Api/Serializers/ActivitySerializer.php

@@ -1,19 +1,65 @@
 <?php namespace Flarum\Api\Serializers;
 
 use Flarum\Core\Models\Activity;
-use Event;
 
-class ActivitySerializer extends BaseSerializer {
-	
-	public function serialize(Activity $activity)
-	{
-		$serialized = [
-			'id' => (int) $activity->id
-		];
+class ActivitySerializer extends BaseSerializer
+{
+    /**
+     * The resource type.
+     * @var string
+     */
+    protected $type = 'activity';
 
-		Event::fire('flarum.api.serialize.activity', [&$serialized]);
+    /**
+     * Serialize attributes of an Activity model for JSON output.
+     *
+     * @param Activity $activity The Activity model to serialize.
+     * @return array
+     */
+    protected function attributes(Activity $activity)
+    {
+        $attributes = [
+            'id'   => ((int) $activity->id) ?: str_random(5),
+            'type' => $activity->type,
+            'content' => json_encode($activity->data),
+            'time' => $activity->time->toRFC3339String()
+        ];
 
-		return $serialized;
-	}
+        return $this->attributesEvent($activity, $attributes);
+    }
 
+    /**
+     * Get a resource containing an activity's sender.
+     *
+     * @param Activity $activity
+     * @return Tobscure\JsonApi\Resource
+     */
+    public function linkUser(Activity $activity)
+    {
+        return (new UserBasicSerializer)->resource($activity->user_id);
+    }
+
+    /**
+     * Get a resource containing an activity's sender.
+     *
+     * @param Activity $activity
+     * @param array $relations
+     * @return Tobscure\JsonApi\Resource
+     */
+    public function includeSender(Activity $activity, $relations)
+    {
+        return (new UserBasicSerializer($relations))->resource($activity->sender);
+    }
+
+    /**
+     * Get a resource containing an activity's sender.
+     *
+     * @param Activity $activity
+     * @param array $relations
+     * @return Tobscure\JsonApi\Resource
+     */
+    public function includePost(Activity $activity, $relations)
+    {
+        return (new PostSerializer($relations))->resource($activity->post);
+    }
 }