Use custom Result/Option types

src/public/bookmark.php

@@ -10,6 +10,7 @@
 
 declare(strict_types=1);
 
+use BitBadger\InspiredByFSharp\Option;
 use BitBadger\PDODocument\{DocumentException, Patch};
 use FeedReaderCentral\{ItemWithFeed, Table};
 
@@ -18,22 +19,21 @@ include '../start.php';
 FeedReaderCentral\Security::verifyUser();
 
 $id   = key_exists('id', $_GET) ? (int)$_GET['id'] : -1;
-$item = ItemWithFeed::retrieveById($id)->getOrCall(not_found(...));
+$item = Option::getOrCall(not_found(...), ItemWithFeed::retrieveById($id));
 
 if (key_exists('action', $_GET)) {
-    $flag = match ($_GET['action']) {
-        'add'    => 1,
-        'remove' => 0,
-        default  => null
-    };
-    if (isset($flag)) {
+    Option::iter(function (int $flag) use ($id, &$item) {
         try {
             Patch::byId(Table::Item, $id, ['is_bookmarked' => $flag]);
             $item->is_bookmarked = $flag;
         } catch (DocumentException $ex) {
             add_error("$ex");
         }
-    }
+    }, match ($_GET['action']) {
+        'add'    => Option::Some(1),
+        'remove' => Option::Some(0),
+        default  => Option::None(),
+    });
 }
 
 $action = $item->isBookmarked() ? 'remove' : 'add';