Add birthdate to wishlist name suggestion

src/functions/getCurrentSeason.php

@@ -8,18 +8,32 @@
 
 function getWishlistNameSuggestion(): string
 {
+    global $user;
+
     $now   = time();
     $month = date('n');
-    $season = '';
+    $name  = '';
 
+    $startOfBirthdate = null;
     $startOfEaster    = strtotime('15. April'); // Approximate
     $startOfChristmas = strtotime('24. December');
 
-    if ($now <= $startOfEaster) {
-        $season = 'Easter';
-    } elseif ($now <= $startOfChristmas) {
-        $season = 'Christmas';
+    if ($user->birthdate) {
+        $birthdates = explode('-', $user->birthdate);
+
+        $birthdate = new \DateTime();
+        $birthdate->setDate(date('Y'), $birthdates[1], $birthdates[2]);
+
+        $startOfBirthdate = $birthdate->getTimestamp();
     }
 
-    return $season;
+    if ($startOfBirthdate && $now <= $startOfBirthdate) {
+        $name = 'Birthday';
+    } elseif ($now <= $startOfEaster) {
+        $name = 'Easter';
+    } elseif ($now <= $startOfChristmas) {
+        $name = 'Christmas';
+    }
+
+    return $name;
 }