package models

// InventoryLog 库存流水表
type InventoryLog struct {
	ID               int64  `json:"id" gorm:"primarykey;comment:流水ID"`
	WarehouseID      int64  `json:"warehouse_id" gorm:"not null;default:0;index;comment:仓库ID"`
	LocationID       int64  `json:"location_id" gorm:"not null;default:0;comment:库位ID（可为空）"`
	ProductID        int64  `json:"product_id" gorm:"not null;default:0;index;comment:商品ID"`
	BatchNo          string `json:"batch_no" gorm:"size:100;not null;default:'';comment:批次号"`
	ChangeType       int8   `json:"change_type" gorm:"not null;default:0;comment:变动类型(1:入库,2:出库,3:移库,4:盘点调整,5:锁定库存,6:解锁库存)"`
	ChangeQuantity   int64  `json:"change_quantity" gorm:"not null;default:0;comment:变动数量（正增负减，最小单位）"`
	BeforeQuantity   int64  `json:"before_quantity" gorm:"not null;default:0;comment:变动前数量"`
	AfterQuantity    int64  `json:"after_quantity" gorm:"not null;default:0;comment:变动后数量"`
	RelatedOrderType string `json:"related_order_type" gorm:"size:50;not null;default:'';comment:关联单据类型（如：采购单/purchase, 销售单/sales, 波次单/wave）"`
	RelatedOrderNo   string `json:"related_order_no" gorm:"size:100;not null;index;comment:关联单据号"`
	Operator         string `json:"operator" gorm:"size:100;not null;comment:操作人"`
	OperatorID       int64  `json:"operator_id" gorm:"not null;default:0;comment:操作人ID"`
	Remark           string `json:"remark" gorm:"size:255;not null;comment:备注"`
	CreatedAt        int64  `json:"created_at" gorm:"type:bigint;not null;default:0;index;comment:操作时间戳(秒)"`
	IsDel            int8   `json:"is_del" gorm:"type:tinyint(1);not null;default:0;comment:逻辑删除标记(0:未删除,1:已删除)"`
}

func (InventoryLog) TableName() string {
	return "inventory_log"
}

func (InventoryLog) TableOptions() string {
	return "ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='库存流水表'"
}