-- Add personal privacy switch for requiring approval when others invite the user into a group.
-- Default is off to preserve existing behavior.

SET @im_sql = (
  SELECT IF(
    COUNT(*) = 0,
    'ALTER TABLE tinode.im_user_privacy_settings ADD COLUMN group_invite_verification TINYINT NOT NULL DEFAULT 0 AFTER read_receipts',
    'SELECT 1'
  )
  FROM information_schema.columns
  WHERE table_schema = 'tinode'
    AND table_name = 'im_user_privacy_settings'
    AND column_name = 'group_invite_verification'
);
PREPARE im_stmt FROM @im_sql;
EXECUTE im_stmt;
DEALLOCATE PREPARE im_stmt;