package schema

import (
	"entgo.io/ent"
	"entgo.io/ent/schema/field"
	"entgo.io/ent/schema/index"
)

// InventoryLock 库存锁定（工单锁库存，防超卖）
type InventoryLock struct {
	ent.Schema
}

func (InventoryLock) Fields() []ent.Field {
	return []ent.Field{
		// 锁定对象：批次或 SN
		field.String("target_type").Comment("BATCH/SN"),
		field.String("target_id").Comment("批次号或 SN"),
		field.String("material_code").Comment("物料编码"),
		field.Int("locked_qty").Default(1).Comment("锁定数量"),
		field.String("order_no").Comment("关联工单号"),
		field.String("status").Default("ACTIVE").Comment("ACTIVE/RELEASED/CONSUMED"),
		field.Int64("expired_at").Optional().Comment("过期时间戳"),
		field.String("remark").Optional().Comment("备注"),
		field.Int64("created_at").DefaultFunc(nowUnix),
		field.Int64("updated_at").DefaultFunc(nowUnix),
	}
}

func (InventoryLock) Indexes() []ent.Index {
	return []ent.Index{
		index.Fields("order_no"),
		index.Fields("status"),
		index.Fields("target_id"),
	}
}