package model

import (
	"time"

	"gorm.io/gorm"
)

// DeviceSimBinding 设备-IoT卡绑定关系模型
// 管理设备与 IoT 卡的多对多绑定关系(1 设备绑定 1-4 张 IoT 卡)
type DeviceSimBinding struct {
	gorm.Model
	BaseModel    `gorm:"embedded"`
	DeviceID     uint       `gorm:"column:device_id;index:idx_device_slot;not null;comment:设备ID" json:"device_id"`
	IotCardID    uint       `gorm:"column:iot_card_id;index;not null;comment:IoT卡ID" json:"iot_card_id"`
	SlotPosition int        `gorm:"column:slot_position;type:int;index:idx_device_slot;comment:插槽位置(1, 2, 3, 4)" json:"slot_position"`
	BindStatus   int        `gorm:"column:bind_status;type:int;default:1;comment:绑定状态 1-已绑定 2-已解绑" json:"bind_status"`
	BindTime     *time.Time `gorm:"column:bind_time;comment:绑定时间" json:"bind_time"`
	UnbindTime   *time.Time `gorm:"column:unbind_time;comment:解绑时间" json:"unbind_time"`
}

func (DeviceSimBinding) TableName() string {
	return "tb_device_sim_binding"
}