1.3.0

zahler.php

@@ -1,35 +1,59 @@
 <?php
 function get_next_payer_username($conn, $meeting_id)
 {
+    $current_year = (int)date('Y');
+
+    // Alle zugesagten Nutzer mit paid_count
     $sql = "
         SELECT 
+            u.id,
             u.username,
+            u.birthday,
+            u.last_birthday_year,
             (SELECT COUNT(*) FROM meeting_teilnehmer WHERE user_id = u.id AND paid = 1) AS paid_count
         FROM meeting_teilnehmer mt
         JOIN users u ON mt.user_id = u.id
         WHERE mt.meeting_id = ? AND mt.rsvp_status = 'accepted'
-        ORDER BY paid_count ASC
+        ORDER BY u.username
     ";
     $stmt = mysqli_prepare($conn, $sql);
-    if (!$stmt) return null;
-
     mysqli_stmt_bind_param($stmt, "i", $meeting_id);
     mysqli_stmt_execute($stmt);
-    $result = mysqli_stmt_get_result($stmt);
-
-    $candidates = [];
-    $min_count = -1;
-    while ($row = mysqli_fetch_assoc($result)) {
-        if ($min_count == -1 || $row['paid_count'] < $min_count) {
-            $min_count = $row['paid_count'];
-            $candidates = [$row['username']];
-        } elseif ($row['paid_count'] == $min_count) {
-            $candidates[] = $row['username'];
-        }
-    }
+    $candidates = mysqli_fetch_all(mysqli_stmt_get_result($stmt), MYSQLI_ASSOC);
     mysqli_stmt_close($stmt);
 
     if (empty($candidates)) return null;
-    sort($candidates);
-    return $candidates[0];
+
+    // Finde minimale paid_count
+    $min_paid = min(array_column($candidates, 'paid_count'));
+    $eligible = array_filter($candidates, fn($c) => $c['paid_count'] == $min_paid);
+
+    $birthday_eligible = [];
+    $others = [];
+
+    foreach ($eligible as $c) {
+        $is_birthday_payer_eligible = (
+            !empty($c['birthday'])
+            && $c['birthday'] !== '0000-00-00'
+            && $c['last_birthday_year'] != $current_year
+        );
+
+        if ($is_birthday_payer_eligible) {
+            $birthday_eligible[] = $c;
+        } else {
+            $others[] = $c;
+        }
+    }
+
+    // Sortiere alphabetisch
+    $sort = fn($a, $b) => strcmp($a['username'], $b['username']);
+
+    if (!empty($birthday_eligible)) {
+        usort($birthday_eligible, $sort);
+        return $birthday_eligible[0]['username'];
+    }
+
+    $all = array_merge($birthday_eligible, $others);
+    usort($all, $sort);
+    return $all[0]['username'];
 }