-- 租户套餐按年计费（元/年）+ 到期自动切换基础套餐
-- 1) 套餐表增加有效时长（天），365 = 按年计费；2) 租户表增加套餐到期时间

-- yz_system_tenant_package 增加 duration_days
SET @tbl := (SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_system_tenant_package');
SET @col := (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_system_tenant_package' AND COLUMN_NAME = 'duration_days');
SET @ddl := IF(@tbl > 0 AND @col = 0, 'ALTER TABLE `yz_system_tenant_package` ADD COLUMN `duration_days` int(11) NOT NULL DEFAULT 365 COMMENT ''套餐有效时长（天），365=按年计费；到期后租户自动切换基础套餐''', 'DO 0');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- yz_system_tenant 增加 package_expire_time
SET @tbl := (SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_system_tenant');
SET @col := (SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'yz_system_tenant' AND COLUMN_NAME = 'package_expire_time');
SET @ddl := IF(@tbl > 0 AND @col = 0, 'ALTER TABLE `yz_system_tenant` ADD COLUMN `package_expire_time` datetime NULL COMMENT ''套餐到期时间（NULL-永久有效）；超过时效自动切换基础套餐''', 'DO 0');
PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;