Add job that downloads and saves the HTML of a webmention

app/Jobs/DownloadWebMention.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace App\Jobs;
+
+use GuzzleHttp\Client;
+use Illuminate\Bus\Queueable;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Queue\InteractsWithQueue;
+use Illuminate\Contracts\Queue\ShouldQueue;
+
+class DownloadWebMention implements ShouldQueue
+{
+    use InteractsWithQueue, Queueable, SerializesModels;
+
+    /**
+     * The webmention source URL.
+     *
+     * @var
+     */
+    protected $source;
+
+    /**
+     * Create a new job instance.
+     *
+     * @return void
+     */
+    public function __construct(string $source)
+    {
+        $this->source = $source;
+    }
+
+    /**
+     * Execute the job.
+     *
+     * @return void
+     */
+    public function handle(Client $guzzle)
+    {
+        $response = $guzzle->request('GET', $source);
+        if ($response->getStatusCode() == '200') {
+            $filesystem = \Illuminate\FileSystem\FileSystem();
+            $filesystem->put(
+                $this->createFilenameFromURL($source),
+                (string) $response->getBody())
+            }
+        }
+    }
+
+    /**
+     * Create a file path from a URL. This is used when caching the HTML
+     * response.
+     *
+     * @param  string  The URL
+     * @return string  The path name
+     */
+    private function createFilenameFromURL($url)
+    {
+        $url = str_replace(['https://', 'http://'], ['', ''], $url);
+        if (substr($url, -1) == '/') {
+            $url = $url . 'index.html';
+        }
+
+        return $url;
+    }
+}