package event

import (
	"encoding"
	"github.com/bytedance/sonic"
)

const (
	TopicOnline  = "postal:event:online"
	TopicOffline = "postal:event:offline"
)

type Event interface {
	Topic() string
	encoding.BinaryMarshaler
	encoding.BinaryUnmarshaler
}

// Online ==================================================== Online
type Online struct {
	Uid string
}

func (o *Online) Topic() string {
	return TopicOnline
}
func (o *Online) MarshalBinary() (data []byte, err error) {
	data, err = sonic.Marshal(o)
	return
}

func (o *Online) UnmarshalBinary(data []byte) error {
	return sonic.Unmarshal(data, o)
}

// Offline ==================================================== Offline
type Offline struct {
	Uid string
}

func (o *Offline) Topic() string {
	return TopicOffline
}

func (o *Offline) MarshalBinary() (data []byte, err error) {
	data, err = sonic.Marshal(o)
	return
}

func (o *Offline) UnmarshalBinary(data []byte) error {
	return sonic.Unmarshal(data, o)
}