/
slack.go
91 lines (78 loc) · 1.8 KB
/
slack.go
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package accessors
import (
"errors"
"fmt"
sl "github.com/nlopes/slack"
"github.com/sirupsen/logrus"
)
type slack struct {
token string
log *logrus.Entry
api *sl.Client
rtm *sl.RTM
}
// NewSlack returns a new Accessor for the Slack network.
func NewSlack(token string, log *logrus.Entry) (Accessor, error) {
if token == "" || len(token) <= 0 {
return nil, errors.New("slack token cannot be empty")
}
if log == nil {
log = logrus.NewEntry(logrus.New())
}
return &slack{
log: log,
token: token,
}, nil
}
func (s *slack) TunnelEvents(eventCh chan MessageEvent, errCh, stopCh chan error) {
s.api = sl.New(s.token)
s.rtm = s.api.NewRTM()
go func() {
s.rtm.ManageConnection()
}()
out:
for {
select {
case <-stopCh:
break out
case msg := <-s.rtm.IncomingEvents:
// TODO: revisit the necessity behind this convoluted method.
func() {
defer func() {
if err := recover(); err != nil {
errCh <- fmt.Errorf("%v", err)
}
}()
switch event := msg.Data.(type) {
case *sl.MessageEvent:
eventCh <- MessageEvent{
Origin: event.Channel,
Sender: &MessageEvent_Sender{
Name: s.rtm.GetInfo().GetUserByID(event.User).Name,
Id: event.User,
},
Body: event.Msg.Text,
}
case *sl.MessageTooLongEvent:
// TODO: properly handle this...
s.log.Errorf("%v", event)
case *sl.ReconnectUrlEvent:
// TODO: maybe reconnect sometimes?
s.log.Debugf("%v", event)
case *sl.DisconnectedEvent:
// TODO: handle reconnecting...
s.log.Debugf("%v", event)
default:
s.log.Debugf("%v", event)
}
}()
}
}
if err := s.rtm.Disconnect(); err != nil {
errCh <- err
}
}
func (s *slack) SendMessage(msg, dest string) error {
s.rtm.SendMessage(s.rtm.NewOutgoingMessage(msg, dest))
return nil
}