Send message to telegram chat.

sendMessage.go

package main

import (
	"fmt"
	"net/http"
	"os"
	"strings"
)

const (
	botID  = "yourbotID"
	chatID = "chat_id"
	host   = "https://api.telegram.org/bot"
)

func main() {
	url := host + botID + "/sendMessage"
	message := os.Args[2:]

	req, _ := http.NewRequest("GET", url, nil)

	query := req.URL.Query()
	query.Add("chat_id", chatID)
	query.Add("text", strings.Join(message, " "))
	req.URL.RawQuery = query.Encode()

	resp, err := http.Get(req.URL.String())

	if err != nil {
		fmt.Println(err)
		return
	}
	defer resp.Body.Close()
}