Send Telegram Message

#!/bin/bash

# This script sends a Telegram message using the Telegram Bot API.

# Load environment variables from the .env file
export $(grep -v '^#' "$(dirname "$0")/../.env" | xargs)

# Variables
MESSAGE=$1
TOKEN=$2
CHAT_ID=$3

escape_markdown() {
    local text="$1"
    text=$(echo "$text" | sed 's/[-.]/\\&/g')
    echo "$text"
}

# Use the provided token if available, otherwise fall back to .env
if [[ -n "$TOKEN" ]]; then
    TELEGRAM_TOKEN="$TOKEN"
fi

# Use the provided chat id if available, otherwise fall back to .env
if [[ -n "$CHAT_ID" ]]; then
    TELEGRAM_CHAT_ID="$CHAT_ID"
fi

# Ensure required variables are set
if [[ -z "$TELEGRAM_TOKEN" || -z "$TELEGRAM_CHAT_ID" ]]; then
    echo "Error: Telegram configuration (TELEGRAM_TOKEN, TELEGRAM_CHAT_ID) is not set."
    exit 1
fi

# Send the message with Markdown formatting
CURL_OUTPUT=$(curl -s -X POST "https://api.telegram.org/bot$TELEGRAM_TOKEN/sendMessage" \
    -d chat_id="$TELEGRAM_CHAT_ID" \
    -d text="$(escape_markdown "$MESSAGE")" \
    -d parse_mode="MarkdownV2" 2>&1)

# Check if curl failed
if [[ $? -eq 0 ]]; then
    echo "$MESSAGE"
else
    echo "Failed to send the message."
    echo "$CURL_OUTPUT"
fi