CoinPaprika Telegram Bot

A Telegram bot that provides cryptocurrency data from CoinPaprika, with Prometheus integration for metrics tracking. The bot allows users to check prices, supply, volume, and charts for coins and tokens via simple commands.

Features

• Price Check: Get the current price of a cryptocurrency.
• Supply Check: Check the circulating supply of a cryptocurrency.
• Volume Check: Get the 24-hour trading volume of a cryptocurrency.
• Price Chart: Fetch a chart for the cryptocurrency.
• Source Code: Share the source code repository of the bot.
• Pro API Key Support: If you have a CoinPaprika Pro API key, you can use it for enhanced features.

Commands

Command	Description
/start	Display the welcome/help message
/help	Display the list of commands
$<symbol>	check the coin overview (e.g., $btc)
/o <symbol>	Check the coin overview
/p <symbol>	Check the price of a coin
/s <symbol>	Check the circulating supply of a coin
/v <symbol>	Check the 24-hour volume of a coin
/c <symbol>	Fetch the price chart of a coin
/source	Get the link to the source code of this bot

Getting Started

Prerequisites

• Go (Golang) 1.22 or higher
• Docker and Docker Compose
• Telegram Bot API token (create one via BotFather)
• Prometheus (for tracking bot metrics, optional)
• Optional: CoinPaprika Pro API key (if you want to use the pro features)

Installation

1. Clone the repository:

   git clone https://github.com/coinpaprika/telegram-bot-v2.git
   cd telegram-bot-v2

2. Install dependencies:

   go mod tidy

3. Create a .env file in the root directory by copying the provided .env.example file:

   cp .env.example .env

4. Fill in the .env file with your credentials, such as your Telegram Bot API token, CoinPaprika API key, and the desired metrics port:

   TELEGRAM_BOT_TOKEN=your-telegram-bot-token
   API_PRO_KEY=your-coinpaprika-pro-api-key # Optional
   METRICS_PORT=9090
   DEBUG=1

Running the Bot with Docker

The bot is designed to be run using Docker. The Docker configuration automatically reads your .env file.

1. Build and run the bot with Docker Compose:

   docker-compose up --build

2. The bot will now be running and listening for Telegram updates. You can also view Prometheus metrics at http://localhost:<METRICS_PORT>/metrics.

Running the Bot without Docker

1. Build the bot:

   go build -o coinpaprika-telegram-bot

2. Run the bot:

   ./coinpaprika-telegram-bot

3. The bot will now be running and listening for Telegram updates. You can also view Prometheus metrics at http://localhost:<METRICS_PORT>/metrics.

Using the API Pro Key

If you have a CoinPaprika Pro API key, add it to the .env file under the API_PRO_KEY field. This will allow the bot to access additional CoinPaprika Pro features.

API_PRO_KEY=your-coinpaprika-pro-api-key

If you don't have a pro key, the bot will still work with standard CoinPaprika features.

Metrics

The bot tracks the following metrics using Prometheus:

• commands_processed: Total number of commands processed by the bot.
• messages_handled: Total number of messages handled by the bot.
• channels_count: Number of unique Telegram channels the bot is active in.

You can scrape these metrics by visiting the /metrics endpoint at http://localhost:<METRICS_PORT>/metrics.

Example Usage

Once the bot is running, you can interact with it via the following commands:

• /o BTC: Check the Bitcoin overview.
• /p BTC: Check the price of Bitcoin.
• /s ETH: Check the circulating supply of Ethereum.
• /v DOGE: Check the 24-hour volume of Dogecoin.
• /c LTC: Fetch the price chart of Litecoin.

License

This project is licensed under the MIT License. See the LICENSE file for details.

Contributions

Feel free to open issues or pull requests if you'd like to contribute to the project!

Acknowledgments

• CoinPaprika for the API used in this bot.
• Prometheus for metrics tracking.