v3: added multiple stylesheets, improved user profiles

api/services/user-service.ts

@@ -178,6 +178,44 @@ export function updateUserAvatar(userId: string, mime: string): void {
   }
 }
 
+export function getInviteTree(
+  userId: string,
+): {
+  id: string;
+  username: string;
+  avatarMime?: string;
+  invitedById: string;
+  createdAt: Date;
+}[] {
+  const rows = db.prepare(`
+    WITH RECURSIVE tree AS (
+      SELECT id, username, avatar_mime, invited_by, created_at, 0 AS depth
+      FROM users
+      WHERE invited_by = ?
+      UNION ALL
+      SELECT u.id, u.username, u.avatar_mime, u.invited_by, u.created_at, t.depth + 1
+      FROM users u
+      INNER JOIN tree t ON u.invited_by = t.id
+      WHERE t.depth < 10
+    )
+    SELECT * FROM tree ORDER BY created_at;
+  `).all(userId) as {
+    id: string;
+    username: string;
+    avatar_mime: string | null;
+    invited_by: string;
+    created_at: string;
+  }[];
+
+  return rows.map((r) => ({
+    id: r.id,
+    username: r.username,
+    avatarMime: r.avatar_mime ?? undefined,
+    invitedById: r.invited_by,
+    createdAt: new Date(r.created_at),
+  }));
+}
+
 export function deleteUser(userId: string): void {
   disconnectUser(userId);