Telegram Multilingual Translation Bot

Overview

This is a Telegram bot designed to translate all messages in a group into each user's preferred language. The bot runs entirely on a cloud server (e.g., AWS EC2) and manages everything automatically after deployment.

Key Features

• Collects each user's language preference by free text (e.g., "English", "עברית").
• Stores preferences in a local SQLite database.
• Translates each message in the group into all preferred languages.
• Sends translations in a single, well-formatted message.
• Fully asynchronous using python-telegram-bot.

How It Works (Behind the Scenes)

• Language Validation: Uses pre-defined dictionaries to map between user-friendly language names and translation API codes.
• Translation: Powered by Google Translate via deep-translator.
• Persistence: Language preferences are stored using SQLite.
• Cloud Ready: Optimized for deployment on cloud services like AWS EC2.

Project Structure

project_root/
├── bot.py                    # Main bot logic
├── .env.example             # Template for environment variables
├── requirements.txt         # Python dependencies
├── database/
│   └── models.py            # Database setup
├── services/
│   ├── translator.py        # Translation logic
│   └── users_lang_manager.py # Language preference logic
└── README.md                # Project documentation

How To Use The Bot (Telegram Usage)

1. Add LiveTranslatorBot to your Telegram group.

   • Open your group settings → Add Members → Search for LiveTranslatorBot → Add.

2. Set your preferred language:

   • Simply send a message with the name of your preferred language (e.g., English, Français, עברית).
   • The bot will confirm the language selection.

3. See translations:

   • Every time someone sends a message, the bot will automatically reply with translations for all group members in their selected languages.

4. Bot Commands:

   • bot help — Shows instructions on how to use the bot.
   • reset languages — (Admins only) Resets all language preferences in the group.

5. Changing language preference:

   • You can change your language at any time by sending a new language name.

Example:

User A sends: "Hello everyone!"
LiveTranslatorBot replies:
- French (Français): Bonjour à tous !
- Hebrew (עברית): שלום לכולם!
- Spanish (Español): ¡Hola a todos!

Notes

• The bot works fully automatically after being added to a group.
• Language preferences are specific to each group and user.
• Supports up to 10 members per group.

Summary

LiveTranslatorBot provides a simple way to enable multilingual communication in Telegram groups. Once added, it seamlessly translates all messages to each user's preferred language without any additional interaction.