implement undo follows

app/Console/Commands/GenerateToken.php

@@ -41,7 +41,7 @@ public function handle()
       $user = User::where('username', $this->argument('username'))->first();
 
       if(!$user)
-        $this->error('User not found');
+        return $this->error('User not found');
 
       $token = new Token();
 

app/Jobs/ActivityPub/Undo.php

@@ -0,0 +1,59 @@
+<?php
+namespace App\Jobs\ActivityPub;
+use App\Jobs\ActivityPubHandler;
+use App\Inbox, App\Follower, App\Activity, App\User;
+use Log;
+
+class Undo extends ActivityPubHandler
+{
+  public function handle()
+  {
+    Log::info('Handling undo request '.$this->_data->id);
+
+    $data = json_decode($this->_data->data, true);
+
+    if(!isset($data['object'])) {
+      Log::error('No object was found in the Undo request');
+      return;
+    }
+
+    if(!is_array($data['object'])) {
+      Log::error('The "object" of the Undo request was not an object');
+      return;
+    }
+
+    if(!isset($data['object']['type']) && $data['object']['type'] == 'Follow') {
+
+      if(!\p3k\url\host_matches($data['object']['object'], env('APP_URL'))) {
+        // Check if this is a follow request to a hosted account
+        if(parse_url($data['object']['object'], PHP_URL_PATH) == '/.well-known/user.json') {
+          $host = parse_url($data['object']['object'], PHP_URL_HOST);
+          $user = User::where('id', $this->_data->user_id)->first();
+          if($user->external_domain != $host) {
+            Log::error('Received an Undo Follow request for an external URL not hosted by this website');
+            return;
+          }
+        } else {
+          Log::error('Received a Undo Follow request for an object not on this website');
+          return;
+        }
+      }
+
+      $follower = Follower::where('user_id', $this->_data->user_id)
+        ->where('profile_id', $this->_data->profile_id)
+        ->first();
+
+      if($follower) {
+        Log::info('Profile '.$this->_data->profile_id.' unfollowed user '.$this->_data->user_id);
+        $follower->delete();
+      }
+
+      return;
+    }
+
+    if(!isset($data['object']['type']) && $data['object']['type'] == 'Create') {
+
+    }
+
+  }
+}