-- 挂号单状态自动更新 - MySQL 事件（可选，需开启 event_scheduler）
-- 表名请根据实际前缀修改（如 zyt_doctor_appointment、la_doctor_appointment）

-- 创建事件：每10分钟执行一次
-- SET GLOBAL event_scheduler = ON;  -- 需先开启事件调度器

DELIMITER $$

DROP EVENT IF EXISTS evt_update_appointment_status$$

CREATE EVENT evt_update_appointment_status
ON SCHEDULE EVERY 10 MINUTE
DO
BEGIN
    -- 1. 超过8小时 -> 已取消(status=2)
    UPDATE zyt_doctor_appointment
    SET status = 2, update_time = UNIX_TIMESTAMP()
    WHERE status = 1
      AND CONCAT(appointment_date, ' ', IFNULL(appointment_time, '00:00:00')) <= DATE_SUB(NOW(), INTERVAL 8 HOUR);

    -- 2. 已过时间但未超8小时 -> 已过号(status=4)
    UPDATE zyt_doctor_appointment
    SET status = 4, update_time = UNIX_TIMESTAMP()
    WHERE status = 1
      AND CONCAT(appointment_date, ' ', IFNULL(appointment_time, '00:00:00')) < NOW()
      AND CONCAT(appointment_date, ' ', IFNULL(appointment_time, '00:00:00')) > DATE_SUB(NOW(), INTERVAL 8 HOUR);
END$$

DELIMITER ;