-- 回滚企业微信审批场景业务类型白名单扩展。
-- 存在本 Change 新增类型的场景配置时禁止破坏性回滚：删除场景行会丢失已配置的模板控件映射，
-- 且相应业务提交将失去渠道而失败关闭。

DO $$
BEGIN
    IF EXISTS (
        SELECT 1 FROM tb_wecom_approval_scene
        WHERE business_type IN (
            'agent_distribution_approval',
            'withdrawal_qualification_approval',
            'commission_withdrawal_approval'
        )
    ) THEN
        RAISE EXCEPTION '存在分销注册、提现资格或提现终审审批场景配置，禁止回滚审批场景业务类型扩展';
    END IF;
END $$;

ALTER TABLE tb_wecom_approval_scene
    DROP CONSTRAINT IF EXISTS chk_wecom_approval_scene_business;

ALTER TABLE tb_wecom_approval_scene
    ADD CONSTRAINT chk_wecom_approval_scene_business
    CHECK (business_type IN ('refund_approval', 'offline_recharge_approval', 'employee_collection_approval'));