完善购买和套餐功能

go/docs/sql/create_tenant_package.sql

@@ -25,6 +25,7 @@ CREATE TABLE IF NOT EXISTS `yz_system_tenant_package` (
   `user_quota` int(11) NOT NULL DEFAULT 20 COMMENT '套餐包含的用户数（新租户绑定套餐后初始化的用户数上限）',
   `extra_user_price` decimal(10,2) NOT NULL DEFAULT 200.00 COMMENT '单个用户增购价格（元/人）',
   `is_default` tinyint(4) NOT NULL DEFAULT 0 COMMENT '是否默认套餐：1是 0否（新建租户未指定套餐时使用）',
+  `allow_repurchase` tinyint(4) NOT NULL DEFAULT 1 COMMENT '是否允许重复购买：1允许（默认） 0仅可购买一次（体验套餐）',
   `sort` int(11) NOT NULL DEFAULT 0 COMMENT '排序号，越小越靠前',
   `status` tinyint(4) NOT NULL DEFAULT 1 COMMENT '状态：1启用 0禁用',
   `remark` varchar(255) NOT NULL DEFAULT '' COMMENT '备注',
@@ -83,6 +84,15 @@ CREATE TABLE IF NOT EXISTS `yz_system_tenant_quota_order` (
   KEY `idx_tid` (`tid`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='租户用户数增购记录表';
 
+-- 4.5) 历史库补列：套餐是否允许重复购买（0=仅可购买一次，适用于体验套餐）
+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 = 'allow_repurchase');
+SET @ddl := IF(@tbl > 0 AND @col = 0, 'ALTER TABLE `yz_system_tenant_package` ADD COLUMN `allow_repurchase` tinyint(4) NOT NULL DEFAULT 1 COMMENT ''是否允许重复购买：1允许（默认） 0仅可购买一次（体验套餐）'' AFTER `is_default`', 'DO 0');
+PREPARE stmt FROM @ddl; EXECUTE stmt; DEALLOCATE PREPARE stmt;
+
+-- 体验套餐（不允许重复购买）不涉及用户数增购：清理历史增购价
+UPDATE `yz_system_tenant_package` SET `extra_user_price` = 0 WHERE `allow_repurchase` = 0;
+
 -- 5) 租户表补列：套餐ID + 用户数上限
 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_id');