/
slacker.go
64 lines (50 loc) · 1.49 KB
/
slacker.go
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package main
import (
"flag"
"fmt"
"github.com/james-bowman/slack"
"io/ioutil"
"log"
"os"
)
func main() {
slackToken := getToken()
text, err := ioutil.ReadFile("message.txt")
if err != nil {
log.Panic(fmt.Sprintf("Error opening message.txt for canned response: %s", err))
}
conn, err := slack.Connect(slackToken)
if err != nil {
log.Fatal(err)
}
slack.EventProcessor(conn,
func(message *slack.Message) {
message.Respond(string(text))
},
nil)
}
// getToken for authenticating with Slack. Ordered lookup process trying first the command line,
// then environment variables and finally a config file
func getToken() string {
var slackToken string
log.Println("Looking for Slack auth token as command line argument")
flag.StringVar(&slackToken, "slacktoken", "", "Slack authentication token - if not specified, will look for an environment variable or config file")
flag.Parse()
if slackToken == "" {
log.Println("Slack auth token not found - looking for environment variable")
slackToken = os.Getenv("SLACKER_SLACK_TOKEN")
}
if slackToken == "" {
log.Println("Slack auth token not found - looking for config file")
slackTokenFileName := "slack.token"
slackTokenFile, err := ioutil.ReadFile(slackTokenFileName)
if err != nil {
log.Panic(fmt.Sprintf("Error opening slack authentication token file %s: %s", slackTokenFileName, err))
}
slackToken = string(slackTokenFile)
}
if slackToken != "" {
log.Println("Slack auth token found")
}
return slackToken
}