-- 已有库增量：t_order 揽收订单字段 OrderSource / PickupTime / CustomerSenderAddressId
-- 对应功能：订单 → 揽收订单；见 oms系统设计-050801.md §4.2.1 / §4.4.4
-- 可重复执行

SET @col_exists := (
  SELECT COUNT(1)
  FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME = 't_order'
    AND COLUMN_NAME = 'OrderSource'
);

SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `t_order` ADD COLUMN `OrderSource` VARCHAR(32) NULL COMMENT ''订单来源：manual/pickup/upload/batch/platform'' AFTER `CustomerId`',
  'SELECT ''t_order.OrderSource 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 = 'PickupTime'
);

SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `t_order` ADD COLUMN `PickupTime` DATETIME NULL COMMENT ''预约揽收时间'' AFTER `OrderSource`',
  'SELECT ''t_order.PickupTime 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 = 'CustomerSenderAddressId'
);

SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `t_order` ADD COLUMN `CustomerSenderAddressId` INT NULL COMMENT ''发件地址簿 Id'' AFTER `PickupTime`',
  'SELECT ''t_order.CustomerSenderAddressId already exists'' AS info'
);
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;

UPDATE `t_order`
SET `OrderSource` = 'manual'
WHERE `OrderSource` IS NULL OR `OrderSource` = '';

SET @idx_exists := (
  SELECT COUNT(1)
  FROM information_schema.STATISTICS
  WHERE TABLE_SCHEMA = DATABASE()
    AND TABLE_NAME = 't_order'
    AND INDEX_NAME = 'idx_ord_source_ctime'
);

SET @sql := IF(
  @idx_exists = 0,
  'ALTER TABLE `t_order` ADD KEY `idx_ord_source_ctime` (`OrderSource`, `CreateTime`)',
  'SELECT ''idx_ord_source_ctime already exists'' AS info'
);
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;