CREATE TABLE IF NOT EXISTS invites (
  id            uuid        PRIMARY KEY DEFAULT gen_random_uuid(),
  community_id  uuid        NOT NULL REFERENCES communities (id) ON DELETE CASCADE,
  created_by    uuid        REFERENCES users (id),
  code          text        UNIQUE NOT NULL,
  max_uses      int,
  uses          int         DEFAULT 0,
  expires_at    timestamptz,
  created_at    timestamptz DEFAULT now()
);