Go Slack postMessage (attachements ver)

slack_attachements.go

package slack

import (
	"bytes"
	"encoding/json"
	"net/http"
	"net/url"
	"os"
)

func PostMessage(channel string, title string, link string, message string) string {
	attachements := [1]map[string]string{{
		"pretext":    title,
		"title":      title,
		"title_link": link,
		"text":       message,
		"color":      "#2ecc71",
	}}
	d, _ := json.Marshal(attachements)
	data := url.Values{}
	data.Set("token", os.Getenv("SLACK_API_TOKEN"))
	data.Add("channel", channel)
	data.Add("username", "your bot name")
	data.Add("link_names", "1")
	data.Add("attachments", string(d[:]))

	client := &http.Client{}
	r, _ := http.NewRequest(
		"POST",
		"https://slack.com/api/chat.postMessage",
		bytes.NewBufferString(data.Encode()),
	)
	r.Header.Add("Content-Type", "application/x-www-form-urlencoded")

	resp, _ := client.Do(r)
	return resp.Status
}