package notifier

import (
	"gopkg.in/olahol/melody.v1"
)

type Notifier struct {
	channel chan *Notification
	Melody  *melody.Melody
}

func NewNotifier(m *melody.Melody) *Notifier {
	n := new(Notifier)
	n.channel = make(chan *Notification)
	n.Melody = m
	return n
}

func (n *Notifier) Listen(then func(notification *Notification)) {
	for {
		select {
		case noti := <-n.channel:
			then(noti)
		}
	}
}

func (n *Notifier) Notify(collection, type_ string, data []byte) {
	n.channel <- &Notification{
		Collection: collection,
		Type:       type_,
		Data:       data,
	}
}

func (n *Notifier) Close() {
	close(n.channel)
}

type Notification struct {
	Collection string `json:"collection"`
	Type       string `json:"type"`
	Data       []byte `json:"data,omitempty"`
}