Massive simplification of code for displaying webmentions of notes, and the micropub client used to make a note

app/WebMention.php

@@ -2,7 +2,13 @@
 
 namespace App;
 
+use Twitter;
+use HTMLPurifier;
+use Carbon\Carbon;
+use HTMLPurifier_Config;
+use Illuminate\Filesystem\Filesystem;
 use Illuminate\Database\Eloquent\Model;
+use Jonnybarnes\WebmentionsParser\Authorship;
 
 class WebMention extends Model
 {
@@ -29,4 +35,112 @@ class WebMention extends Model
      * @var array
      */
     protected $guarded = ['id'];
+
+    /**
+     * Get the author of the webmention.
+     *
+     * @return array
+     */
+    public function getAuthorAttribute()
+    {
+        $authorship = new Authorship();
+        $hCard = $authorship->findAuthor(json_decode($this->mf2, true));
+        if (array_key_exists('properties', $hCard) &&
+            array_key_exists('photo', $hCard['properties'])
+        ) {
+            $hCard['properties']['photo'][0] = $this->createPhotoLink($hCard['properties']['photo'][0]);
+        }
+
+        return $hCard;
+    }
+
+    /**
+     * Get the published value for the webmention.
+     *
+     * @return string
+     */
+    public function getPublishedAttribute()
+    {
+        $microformats = json_decode($this->mf2, true);
+        $carbon = new Carbon();
+        if (isset($microformats['items'][0]['properties']['published'][0])) {
+            try {
+                $published = $carbon->parse(
+                    $microformats['items'][0]['properties']['published'][0]
+                )->toDayDateTimeString();
+            } catch (\Exception $exception) {
+                $published = $webmention->updated_at->toDayDateTimeString();
+            }
+        } else {
+            $published = $webmention->updated_at->toDayDateTimeString();
+        }
+
+        return $published;
+    }
+
+    /**
+     * Get the filteres HTML of a reply.
+     *
+     * @return strin|null
+     */
+    public function getReplyAttribute()
+    {
+        $microformats = json_decode($this->mf2, true);
+        if (isset($microformats['items'][0]['properties']['content'][0]['html'])) {
+            return $this->filterHTML($microformats['items'][0]['properties']['content'][0]['html']);
+        }
+    }
+
+    /**
+     * Create the photo link.
+     *
+     * @param  string
+     * @return string
+     */
+    public function createPhotoLink(string $url): string
+    {
+        $url = normalize_url($url);
+        $host = parse_url($url, PHP_URL_HOST);
+        if ($host == 'pbs.twimg.com') {
+            //make sure we use HTTPS, we know twitter supports it
+            return str_replace('http://', 'https://', $url);
+        }
+        if ($host == 'twitter.com') {
+            if (Cache::has($url)) {
+                return Cache::get($url);
+            }
+            $username = parse_url($url, PHP_URL_PATH);
+            try {
+                $info = Twitter::getUsers(['screen_name' => $username]);
+                $profile_image = $info->profile_image_url_https;
+                Cache::put($url, $profile_image, 10080); //1 week
+            } catch (Exception $e) {
+                return $url; //not sure here
+            }
+
+            return $profile_image;
+        }
+        $filesystem = new Filesystem();
+        if ($filesystem->exists(public_path() . '/assets/profile-images/' . $host . '/image')) {
+            return '/assets/profile-images/' . $host . '/image';
+        }
+
+        return $url;
+    }
+
+    /**
+     * Filter the HTML in a reply webmention.
+     *
+     * @param  string  The reply HTML
+     * @return string  The filtered HTML
+     */
+    private function filterHTML($html)
+    {
+        $config = HTMLPurifier_Config::createDefault();
+        $config->set('Cache.SerializerPath', storage_path() . '/HTMLPurifier');
+        $config->set('HTML.TargetBlank', true);
+        $purifier = new HTMLPurifier($config);
+
+        return $purifier->purify($html);
+    }
 }