Currency Exchange Rate Bot 💱

A Telegram bot for managing currency exchange rates with real-time Firebase synchronization.

🔐 Authentication System

Secure password-based authentication
Session management for authorized users
Automatic logout functionality

💹 Currency Management

Supported Currencies:

    USD (Blue) - with rates display
    USD (White) - with rates display
    EUR - with rates display
    GBP - rates on request
    CNY - rates on request
    RUB - with rates display

Real-time rate updates
Buy/sell rate validation
Historical update tracking

📊 User Interface

Interactive Telegram keyboard
Inline buttons for currency selection
Markdown-formatted messages
Russian language interface

🛠 Technology Stack Backend

Python 3.x - Core programming language
pyTelegramBotAPI - Telegram Bot API wrapper
Firebase Admin SDK - Real-time database
python-dotenv - Environment configuration

Database

Firebase Realtime Database - Cloud data storage
JSON structure for currency data
Automatic timestamp tracking

Security

Environment variable configuration
Password protection
Input validation
Error handling

#🔧 Installation & Setup Prerequisites

Python 3.8+

Telegram Bot Token

Firebase Service Account

Realtime Database URL