Telegram Dynamic Responder

A robust Telegram bot that dynamically responds to messages using predefined triggers and replies. It logs messages and errors for auditing and debugging purposes and simulates real-user typing behavior before replying.

Features

• Handles incoming Telegram webhooks for message events.
• Simulates typing behavior before sending responses.
• Logs all received messages into messages.log.
• Logs all errors into errors.log.
• Dynamic responses based on triggers defined in config.json.
• Easily configurable via .env and config.json.

Prerequisites

• Node.js
• Telegram Bot Token

Installation

npm install

Configuration

1. Create a .env file in the root directory with the following variables:

BOT_TOKEN=<your_telegram_bot_token>
OWNER_ID=<your_telegram_user_id>
WEBHOOK_URL=https://your.domain.com
PORT=3000
SAVE_LOCAL=true

2. Customize config.json to set your triggers and replies.

Example config.json with localization support:

{
  "typingDelay": 1500,
  "languages": ["en", "ru"],
  "defaultLang": "en",
  "responses": {
    "en": [
      {
        "triggers": ["hi", "hello", "hey"],
        "replies": ["Hello! 👋", "Hi there! How can I help you?"]
      }
    ],
    "ru": [
      {
        "triggers": ["привет", "здравствуй"],
        "replies": ["Привет! 👋", "Здравствуйте! Чем могу помочь?"]
      }
    ]
  }
}

Usage

Start the bot with:

npm start

The bot will automatically set the Telegram webhook on startup.

Logs

• Incoming messages are saved to messages.log (if enabled in .env)
• Errors are logged into errors.log

Deployment

Ensure your server is accessible via the public URL defined in WEBHOOK_URL. Use services like Render, Railway, or Cloudflare Pages with Workers for hosting.