func (b *bot) loop(io input.Input) {
log.Println("[bot][loop] starting", io.String())
for {
select {
case <-b.exit:
log.Println("[bot][loop] exiting", io.String())
return
default:
if err := b.run(io); err != nil {
log.Println("[bot][loop] error", err)
time.Sleep(time.Second)
}
}
}
}
func (b *bot) run(io input.Input) error {
log.Println("[bot][loop] connecting to", io.String())
c, err := io.Stream()
if err != nil {
return err
}
for {
select {
case <-b.exit:
log.Println("[bot][loop] closing", io.String())
return c.Close()
default:
var recvEv input.Event
// receive input
if err := c.Recv(&recvEv); err != nil {
return err
}
// only process TextEvent
if recvEv.Type != input.TextEvent {
continue
}
// process command
for pattern, cmd := range b.commands {
// skip if it doesn't match
if m, err := regexp.Match(pattern, recvEv.Data); err != nil || !m {
continue
}
// matched, exec command
args := strings.Split(string(recvEv.Data), " ")
rsp, err := cmd.Exec(args...)
if err != nil {
rsp = []byte("error executing cmd: " + err.Error())
}
// send response
if err := c.Send(&input.Event{
Meta: recvEv.Meta,
From: recvEv.To,
To: recvEv.From,
Type: input.TextEvent,
Data: rsp,
}); err != nil {
return err
}
// done
break
}
}
}
}