package schema

import (
	"time"

	"entgo.io/ent"
	"entgo.io/ent/dialect/entsql"
	"entgo.io/ent/schema"
	"entgo.io/ent/schema/field"
	"entgo.io/ent/schema/index"
)

// UserStation 用户-工位 关联（一个操作员可绑定多个工位）
type UserStation struct {
	ent.Schema
}

func (UserStation) Annotations() []schema.Annotation {
	return []schema.Annotation{entsql.Annotation{Table: "user_station"}}
}

func (UserStation) Fields() []ent.Field {
	return []ent.Field{
		field.Int("id").Positive(),
		field.Int("userId").Comment("用户ID"),
		field.Int("stationNo").Comment("工位号 1..12"),
		field.Time("createdAt").Default(time.Now).Immutable(),
	}
}

func (UserStation) Indexes() []ent.Index {
	return []ent.Index{
		index.Fields("userId"),
		index.Fields("stationNo"),
		index.Fields("userId", "stationNo").Unique(),
	}
}