-- Auth 单一登录标识增量：用户名或中国大陆手机号。
-- 可重复执行；手机号仅从 IAM 当前用户档案回填，无法确认的账号保持 NULL。
USE baiyue_auth;

DROP PROCEDURE IF EXISTS auth_add_login_phone;
DELIMITER $$
CREATE PROCEDURE auth_add_login_phone()
BEGIN
  IF NOT EXISTS (
      SELECT 1 FROM information_schema.columns
       WHERE table_schema = 'baiyue_auth' AND table_name = 'auth_account' AND column_name = 'phone') THEN
    ALTER TABLE auth_account ADD COLUMN phone VARCHAR(32) NULL COMMENT '全局唯一中国大陆登录手机号' AFTER username;
  END IF;
END$$
DELIMITER ;
CALL auth_add_login_phone();
DROP PROCEDURE auth_add_login_phone;

DROP PROCEDURE IF EXISTS auth_backfill_login_phone;
DELIMITER $$
CREATE PROCEDURE auth_backfill_login_phone()
BEGIN
  UPDATE auth_account
     SET phone = NULL
   WHERE phone IS NOT NULL AND phone NOT REGEXP '^1[3-9][0-9]{9}$';
  UPDATE auth_account account
  JOIN baiyue_iam.iam_user user ON user.auth_user_id = account.id AND user.deleted = 0
  JOIN (
    SELECT phone
      FROM baiyue_iam.iam_user
     WHERE deleted = 0 AND phone REGEXP '^1[3-9][0-9]{9}$'
     GROUP BY phone
    HAVING COUNT(DISTINCT auth_user_id) = 1
  ) unique_phone ON unique_phone.phone = user.phone
     SET account.phone = user.phone
   WHERE account.phone IS NULL AND user.phone REGEXP '^1[3-9][0-9]{9}$';
  IF NOT EXISTS (
      SELECT 1 FROM information_schema.statistics
       WHERE table_schema = 'baiyue_auth' AND table_name = 'auth_account'
         AND index_name = 'uk_auth_account_phone') THEN
    ALTER TABLE auth_account ADD UNIQUE KEY uk_auth_account_phone (phone);
  END IF;
END$$
DELIMITER ;
CALL auth_backfill_login_phone();
DROP PROCEDURE auth_backfill_login_phone;