Telegram notification.sh

#!/bin/bash

TELEGRAM_BOT_TOKEN=""
CHAT_ID=""

title="$1"
message="$2"
disable_notification=false

# Function to display script usage instructions
function display_help {
  echo "Usage: $0 <title> <message> [OPTIONS]"
  echo "Send a formatted message to a Telegram chat."
  echo
  echo "Options:"
  echo "  -n, --no-notification   Disable notifications"
  echo "  -h, --help              Display this help and exit"
  exit 1
}

# Function to capitalize the first letter of the title
function capitalize_title {
  echo "$1" | awk '{print toupper(substr($0, 1, 1)) tolower(substr($0, 2))}'
}

# Parse command line options
while [[ "$#" -gt 0 ]]; do
  case $1 in
    -n|--no-notification)
      disable_notification=true
      ;;
    -h|--help)
      display_help
      ;;
    *)
      title=$(capitalize_title "$1")
      message="$2"
      break
      ;;
  esac
  shift
done

# Get formatted date
formatted_date="$(date '+%a, %d %b %Y')"
# Get time
time="$(date '+%H:%M:%S')"
# Get hostname without .local
hostname="$(hostname | sed 's/.local//g')"

# Construct the message
formatted_message="*${title}*\n_${formatted_date} at ${time}_\nFrom: *${hostname}*\n${message}"

# Send the message using curl
curl -X POST \
     -H 'Content-Type: application/json' \
     -d "{\"chat_id\": \"$CHAT_ID\", \"text\": \"$formatted_message\", \"parse_mode\": \"Markdown\", \"disable_notification\": $disable_notification}" \
     "https://api.telegram.org/bot$TELEGRAM_BOT_TOKEN/sendMessage" > /dev/null 2>&1