This library provides a very partial Go implementation of the Slack RTM API with an eye towards creating chatbots for Slack.
About 1000 similar libraries exist, and if you came here searching for a implementation of the full API, you may as well head somewhere else; this repository looks promising!
Instead, in this rudimentary approach, all we do is connect to the WebSocket server and allow the user of a bot to set up simple read-and-respond scripts through callbacks, which happened to be what I needed when doing this; the repository is kept here mainly for my personal bookkeeping, and to allow others who happen to come across it to get started.
First of all, to get started you'll need an API token for your bot user; you can get that at https://your-team-name.slack.com/apps/manage/custom-integrations.
With that out of the way, an example script says more than a thousand words:
package main
import (
"errors"
"fmt"
"log"
"os"
"github.com/fuglede/slackbot"
)
func main() {
token := "xoxb-your-api-token-goes-here"
// Create a new bot and let it log to stdout
bot := slackbot.New(log.New(os.Stdout, "", 3))
// Set up the bot to respond to the message "Hi". The callback
// returns an error which we will catch later.
bot.OnMessage = func(message slackbot.MessageIn) error {
if message.Text == "Hi" {
bot.SendMessage(message.Channel, "Hi!")
}
return errors.New("Error only for illustration")
}
// Connect and start listening for messages
bot.Start(token)
for {
select {
// Exit the application when the bot signals disconnection
case <-bot.Done:
return
// Use the CallbackErrors channel to catch the "error" from above
case err := <-bot.CallbackErrors:
fmt.Println(err)
}
}
}