-- 已有库增量：订单面单 PDF 字段 + 销售产品 LabelTemplateId
-- 对应：docs/面单标签模板与PDF生成方案.md §4.2 / §4.3
-- 可重复执行

-- ========== t_order ==========
SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 't_order' AND COLUMN_NAME = 'LabelUrl'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `t_order` ADD COLUMN `LabelUrl` VARCHAR(500) NULL COMMENT ''面单PDF相对路径'' AFTER `IsRemote`',
  'SELECT ''t_order.LabelUrl already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 't_order' AND COLUMN_NAME = 'LabelTemplateId'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `t_order` ADD COLUMN `LabelTemplateId` INT NULL COMMENT ''面单模板Id'' AFTER `LabelUrl`',
  'SELECT ''t_order.LabelTemplateId already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 't_order' AND COLUMN_NAME = 'LabelGenerateStatus'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `t_order` ADD COLUMN `LabelGenerateStatus` VARCHAR(32) NULL COMMENT ''Pending/Ready/Failed'' AFTER `LabelTemplateId`',
  'SELECT ''t_order.LabelGenerateStatus already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 't_order' AND COLUMN_NAME = 'LabelGenerateError'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `t_order` ADD COLUMN `LabelGenerateError` VARCHAR(500) NULL COMMENT ''面单生成失败原因'' AFTER `LabelGenerateStatus`',
  'SELECT ''t_order.LabelGenerateError already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

SET @idx_exists := (
  SELECT COUNT(1) FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 't_order' AND INDEX_NAME = 'idx_ord_label_status'
);
SET @sql := IF(
  @idx_exists = 0,
  'ALTER TABLE `t_order` ADD KEY `idx_ord_label_status` (`LabelGenerateStatus`)',
  'SELECT ''idx_ord_label_status already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- ========== t_sales_product ==========
SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 't_sales_product' AND COLUMN_NAME = 'LabelTemplateId'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `t_sales_product` ADD COLUMN `LabelTemplateId` INT NULL COMMENT ''客户面单模板Id'' AFTER `CustomerWaybill`',
  'SELECT ''t_sales_product.LabelTemplateId already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- ========== 全局默认模板配置种子（AppKey 填模板 Id，Enabled=0 默认关闭）==========
INSERT INTO `t_system_other_config`
  (`ConfigCode`, `ConfigName`, `Enabled`, `AppKey`, `TimeoutSeconds`, `Remark`, `CreateTime`)
SELECT
  'label_default_template',
  '全局默认面单模板',
  0,
  NULL,
  30,
  'AppKey=标签模板Id；启用后产品未绑模板时回落此 Id',
  NOW()
FROM DUAL
WHERE NOT EXISTS (
  SELECT 1 FROM `t_system_other_config` WHERE `ConfigCode` = 'label_default_template'
);