lbry.go/extras/util/slack.go
2019-02-12 19:08:24 +01:00

77 lines
1.8 KiB
Go

package util
import (
"fmt"
"strings"
"github.com/lbryio/lbry.go/extras/errors"
"github.com/nlopes/slack"
log "github.com/sirupsen/logrus"
)
var defaultChannel string
var defaultUsername string
var slackApi *slack.Client
// InitSlack Initializes a slack client with the given token and sets the default channel.
func InitSlack(token string, channel string, username string) {
slackApi = slack.New(token)
defaultChannel = channel
defaultUsername = username
}
// SendToSlackUser Sends message to a specific user.
func SendToSlackUser(user, username, format string, a ...interface{}) error {
message := format
if len(a) > 0 {
message = fmt.Sprintf(format, a...)
}
if !strings.HasPrefix(user, "@") {
user = "@" + user
}
return sendToSlack(user, username, message)
}
// SendToSlackChannel Sends message to a specific channel.
func SendToSlackChannel(channel, username, format string, a ...interface{}) error {
message := format
if len(a) > 0 {
message = fmt.Sprintf(format, a...)
}
if !strings.HasPrefix(channel, "#") {
channel = "#" + channel
}
return sendToSlack(channel, username, message)
}
// SendToSlack Sends message to the default channel.
func SendToSlack(format string, a ...interface{}) error {
message := format
if len(a) > 0 {
message = fmt.Sprintf(format, a...)
}
if defaultChannel == "" {
return errors.Err("no default slack channel set")
}
return sendToSlack(defaultChannel, defaultUsername, message)
}
func sendToSlack(channel, username, message string) error {
var err error
if slackApi == nil {
err = errors.Err("no slack token provided")
} else {
log.Debugln("slack: " + channel + ": " + message)
_, _, err = slackApi.PostMessage(channel, slack.MsgOptionText(message, false), slack.MsgOptionUsername(username))
}
if err != nil {
log.Errorln("error sending to slack: " + err.Error())
return err
}
return nil
}