tgme

#!/bin/bash

# author: Marco Trosi
# github: https://github.com/marcotrosi/tgme

if [[ "${#}" -eq 0 ]]
then
   echo 'NAME:'
   echo '   tgme - send messages to your Telegram account'
   echo ''
   echo 'SYNOPSIS:'
   echo '   tgme "TEXT"'
   echo '   tgme "TITLE" "TEXT"'
   echo '   tgme "TITLE" "SUBTITLE" "TEXT"'
   echo ''
   echo 'CONFIGURATION:'
   echo '   The configuration shall consist of two files.'
   echo '   One file named "token" shall contain the Telegram API token of your bot.'
   echo '   A second file named "chatid" that shall contain the Telegram chat ID in which the bot is added.'
   echo '   Use botfather within Telegram to create a bot and get a token for it.'
   echo '   Add the bot and send a dummy message, then put "https://api.telegram.org/bot<YourBOTToken>/getUpdates"'
   echo '   in your browser to find the chat_id.'
   exit 0
fi

if [[ "${#}" -gt 3 ]]
then
   echo "tgme error: too many arguments"
   exit 3
fi

# CfgPath="${HOME}/.tgme"
CfgPath="${HOME}/.config/tgme"
TokenFile="${CfgPath}/token"
ChatIDFile="${CfgPath}/chatid"
Token="$(cat "${TokenFile}")"
ChatID="$(cat "${ChatIDFile}")"
Api="https://api.telegram.org/bot${Token}"

if [[ "${#}" -eq 1 ]] # text
then
   Message="${1}"
fi

if [[ "${#}" -eq 2 ]] # title and text
then
   Title="<b>${1}</b>"
   Text="${2}"
   Message="${Title}\n\n${Text}"
fi

if [[ "${#}" -eq 3 ]] # title, subtitle and text
then
   Title="<b>${1}</b>"
   Subtitle="<i>${2}</i>"
   Text="${3}"
   Message="${Title}\n${Subtitle}\n\n${Text}"
fi

Data="{\"chat_id\":\"${ChatID}\", \"text\":\"${Message}\", \"parse_mode\":\"HTML\"}"
Call="curl -s -X POST -H 'Content-Type: application/json' -d '${Data}' ${Api}/sendMessage"
Response=$(eval "${Call}")

if [ "${?}" -ne 0 ]
then
   echo "tgme error: something went wrong"
   exit 1
fi

# if [ "$(echo "${Response}" | dasel select -p json 'ok')" != 'true' ]
# if [ "$(echo "${Response}" | jq '.ok')" != 'true' ]
if [ "$(echo "${Response}" | grep -o '"ok":\(true\|false\)')" != '"ok":true' ]
then
   echo "tgme error: could not send message"
   echo "Call:"
   echo "    ${Call}"
   echo "Response:"
   echo "    ${Response}"
   exit 2
fi

exit 0