-- 物流单绑定包裹/库存：t_order_stock_bind + C_inventory/C_parcel_item 冻结与可用字段
-- 见 oms系统设计-050801.md §4.2.11 / §4.4.6 / §3.1.2
-- ConcurrencyStamp 默认用固定 GUID，避免 DEFAULT (UUID()) 触发复制 1674
-- 可重复执行

CREATE TABLE IF NOT EXISTS `t_order_stock_bind` (
  `Id` INT NOT NULL AUTO_INCREMENT,
  `OrderId` INT NOT NULL COMMENT '物流单 t_order.Id',
  `CustomerId` INT NOT NULL COMMENT '客户隔离键',
  `WarehouseId` INT NOT NULL COMMENT '仓库',
  `BindType` VARCHAR(20) NOT NULL COMMENT 'inventory / parcelItem',
  `SkuId` INT NULL COMMENT 'SKU',
  `InventoryId` INT NULL COMMENT 'C_inventory.Id，可空=按SKU分摊',
  `BinLocationId` INT NULL COMMENT '库位快照',
  `ParcelId` INT NULL COMMENT 'C_parcel.Id',
  `ParcelItemId` INT NULL COMMENT 'C_parcel_item.Id',
  `BindQty` INT NOT NULL COMMENT '绑定数量',
  `Status` VARCHAR(20) NOT NULL DEFAULT 'bound' COMMENT 'bound/deducted/released',
  `SkuCode` VARCHAR(64) NULL,
  `SkuName` VARCHAR(128) NULL,
  `TrackingNo` VARCHAR(64) NULL,
  `ProductName` VARCHAR(256) NULL,
  `ImageUrl` VARCHAR(512) NULL,
  `AttributeText` VARCHAR(256) NULL,
  `Remark` VARCHAR(512) NULL,
  `IsDeleted` TINYINT NOT NULL DEFAULT 0,
  `ConcurrencyStamp` CHAR(36) NOT NULL DEFAULT '00000000-0000-0000-0000-000000000000' COMMENT '并发戳',
  `CreateUserId` INT NOT NULL,
  `CreateTime` DATETIME NOT NULL,
  `UpdateUserId` INT NULL,
  `UpdateTime` DATETIME NULL,
  PRIMARY KEY (`Id`),
  KEY `idx_osb_order` (`OrderId`, `IsDeleted`, `Status`),
  KEY `idx_osb_parcel_item` (`ParcelItemId`, `Status`, `IsDeleted`),
  KEY `idx_osb_sku` (`CustomerId`, `WarehouseId`, `SkuId`, `Status`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='物流单仓储绑定明细';

-- 已建表但缺 ConcurrencyStamp 时补列（可重复执行）
SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 't_order_stock_bind' AND COLUMN_NAME = 'ConcurrencyStamp'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `t_order_stock_bind` ADD COLUMN `ConcurrencyStamp` CHAR(36) NOT NULL DEFAULT ''00000000-0000-0000-0000-000000000000'' COMMENT ''并发戳'' AFTER `IsDeleted`',
  'SELECT ''t_order_stock_bind.ConcurrencyStamp already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- C_inventory.FrozenQty
SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'C_inventory' AND COLUMN_NAME = 'FrozenQty'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `C_inventory` ADD COLUMN `FrozenQty` INT NOT NULL DEFAULT 0 COMMENT ''冻结数量'' AFTER `Qty`',
  'SELECT ''C_inventory.FrozenQty already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- C_inventory.AvailableQty
SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'C_inventory' AND COLUMN_NAME = 'AvailableQty'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `C_inventory` ADD COLUMN `AvailableQty` INT NOT NULL DEFAULT 0 COMMENT ''可用=Qty-FrozenQty'' AFTER `FrozenQty`',
  'SELECT ''C_inventory.AvailableQty already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

UPDATE `C_inventory`
SET `AvailableQty` = GREATEST(0, `Qty` - IFNULL(`FrozenQty`, 0))
WHERE `AvailableQty` <> GREATEST(0, `Qty` - IFNULL(`FrozenQty`, 0))
   OR (`AvailableQty` = 0 AND `Qty` > 0 AND IFNULL(`FrozenQty`, 0) = 0);

-- C_parcel_item.FrozenQty
SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'C_parcel_item' AND COLUMN_NAME = 'FrozenQty'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `C_parcel_item` ADD COLUMN `FrozenQty` INT NOT NULL DEFAULT 0 COMMENT ''冻结数量'' AFTER `Quantity`',
  'SELECT ''C_parcel_item.FrozenQty already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

-- C_parcel_item.AvailableQty
SET @col_exists := (
  SELECT COUNT(1) FROM information_schema.COLUMNS
  WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'C_parcel_item' AND COLUMN_NAME = 'AvailableQty'
);
SET @sql := IF(
  @col_exists = 0,
  'ALTER TABLE `C_parcel_item` ADD COLUMN `AvailableQty` INT NOT NULL DEFAULT 0 COMMENT ''可用=Quantity-FrozenQty'' AFTER `FrozenQty`',
  'SELECT ''C_parcel_item.AvailableQty already exists'' AS info'
);
PREPARE stmt FROM @sql; EXECUTE stmt; DEALLOCATE PREPARE stmt;

UPDATE `C_parcel_item`
SET `AvailableQty` = GREATEST(0, `Quantity` - IFNULL(`FrozenQty`, 0))
WHERE `AvailableQty` <> GREATEST(0, `Quantity` - IFNULL(`FrozenQty`, 0))
   OR (`AvailableQty` = 0 AND `Quantity` > 0 AND IFNULL(`FrozenQty`, 0) = 0);