#!/bin/bash

set -o pipefail
TOKEN="SpecifyYourTelegramToken"
CHAT_ID="SpecifyChatId"
APIURL="https://api.telegram.org/bot${TOKEN}/sendMessage"

if [[ -z "$1$2" ]]; then echo "Missing arguments" >&2; exit 2; fi
if [[ -z "$2" ]]
 then
  SUBJECT=""
  MESSAGE="$1"
 else
  SUBJECT="$1"
  MESSAGE="$2"
fi

curlres=$(curl -s --header 'Content-Type: application/json' --request 'POST' --data "{\"chat_id\":\"${CHAT_ID}\",\"text\":\"${SUBJECT}\n${MESSAGE}\"}" "${APIURL}")
curlerr="$?"
if [[ $curlerr -ne 0 ]]; then echo "Curl error:$curlerr" >&2; exit 2;fi
if [[ "$(echo "$curlres"jq ".ok")" != "true" ]]
 then
   echo "api.telegram error" >&2
   echo "cmd=curl -s --header 'Content-Type: application/json' --request 'POST' --data \"{\"chat_id\":\"${CHAT_ID}\",\"text\":\"${SUBJECT}\n${MESSAGE}\"}\" \"${APIURL}\"" >&2
   echo "ressult=$curlres" >&2
fi

exit 0