-- Extend role constraint to support more roles
ALTER TABLE users DROP CONSTRAINT IF EXISTS users_role_check;
ALTER TABLE users ADD CONSTRAINT users_role_check
  CHECK (role IN ('manager', 'housekeeper', 'super_admin', 'receptionist', 'accountant', 'security'));

-- Add new columns
ALTER TABLE users ADD COLUMN IF NOT EXISTS phone VARCHAR(50);
ALTER TABLE users ADD COLUMN IF NOT EXISTS position VARCHAR(100);
ALTER TABLE users ADD COLUMN IF NOT EXISTS active BOOLEAN NOT NULL DEFAULT true;