package schema

import (
	"bj_power_mes/constants"

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

// EquipmentSlot 设备槽位
type EquipmentSlot struct {
	ent.Schema
}

func (EquipmentSlot) Annotations() []schema.Annotation {
	return []schema.Annotation{
		entsql.Annotation{Table: "equipment_slot"},
	}
}

func (EquipmentSlot) Fields() []ent.Field {
	return []ent.Field{
		field.Int("id").Positive(),
		field.Int("equipmentId").Optional().Nillable().Comment("设备ID"),
		field.Int("slotNo").Comment("槽位序号（1-based）"),
		field.Enum("status").
			GoType(constants.SlotStatus("")).
			Default(string(constants.SlotStatus_Empty)).
			Comment("槽位状态"),
		field.Int("currentJobId").Optional().Nillable().Comment("当前工件ID"),
		field.Time("occupiedAt").Optional().Nillable().Comment("占用时间（FIFO排序参考）"),
	}
}

func (EquipmentSlot) Edges() []ent.Edge {
	return []ent.Edge{
		edge.From("equipment", Equipment.Type).Ref("slots").Field("equipmentId").Unique(),
	}
}

func (EquipmentSlot) Indexes() []ent.Index {
	return []ent.Index{
		index.Fields("equipmentId", "slotNo").Unique(),
		index.Fields("currentJobId"),
	}
}