package schema

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

// OrderMaterialLedger 工单物料台账（WMS 侧）
// 维护：物料总需求数量、累计已出库数量、剩余待出库数量
// 强约束：累计出库 ≤ 工单总需求量；等于时领料完结，禁止再出库
type OrderMaterialLedger struct {
	ent.Schema
}

func (OrderMaterialLedger) Fields() []ent.Field {
	return []ent.Field{
		field.String("order_no").Comment("工单号"),
		field.String("material_code").Comment("物料编码"),
		field.String("material_name").Optional().Comment("物料名称(冗余)"),
		field.Int("total_qty").Default(0).Comment("物料总需求数量"),
		field.Int("out_qty").Default(0).Comment("累计已出库数量"),
		field.String("status").Default("进行中").Comment("进行中/领料完结"),
		field.String("remark").Optional().Comment("备注"),
		field.Int64("created_at").DefaultFunc(nowUnix),
		field.Int64("updated_at").DefaultFunc(nowUnix),
	}
}

func (OrderMaterialLedger) Indexes() []ent.Index {
	return []ent.Index{
		index.Fields("order_no"),
		index.Fields("material_code"),
	}
}