package tables

import (
	"time"

	"git.x2erp.com/qdy/go-db/sqldef"
)

func init() {
	sqldef.AddRegistration(func(r *sqldef.Registry) {
		tb := sqldef.NewTable("inventory_snapshot", "库存快照表").
			ID("snapshot_id", 32).Comment("快照ID，主键").End().
			String("sku_id", 32).NotNull().Comment("商品SKU").End().
			String("channel_id", 32).NotNull().Comment("所在渠道").End().
			String("tenant_id", 8).NotNull().Comment("租户ID").End().
			Int("quantity").NotNull().Default("0").Comment("可用库存数量").End().
			DateTime("snapshot_time").NotNull().Comment("快照时间点").End().
			DateTime("extracted_at").NotNull().Default("CURRENT_TIMESTAMP").Comment("数据抽取时间").End()
		r.RegisterTable(tb.Build())
	})
}

// InventorySnapshot 库存快照表结构体
type InventorySnapshot struct {
	SnapshotID   string    `gorm:"column:snapshot_id;type:varchar(32);primaryKey;not null;comment:快照ID，主键"`
	SkuID        string    `gorm:"column:sku_id;type:varchar(32);not null;comment:商品SKU;index:idx_sku_channel"`
	ChannelID    string    `gorm:"column:channel_id;type:varchar(32);not null;comment:所在渠道;index:idx_sku_channel"`
	Quantity     int       `gorm:"column:quantity;not null;default:0;comment:可用库存数量"`
	SnapshotTime time.Time `gorm:"column:snapshot_time;not null;comment:快照时间点"`
	ExtractedAt  time.Time `gorm:"column:extracted_at;not null;default:CURRENT_TIMESTAMP;comment:数据抽取时间"`
	TenantId     string    `gorm:"column:tenant_id;type:varchar(8);comment:租户ID"`
}

func (InventorySnapshot) TableName() string {
	return "inventory_snapshot"
}