# GRAIN 🌾

## Go Relay Archetecture for Implementing Nostr

GRAIN is an open-source Nostr relay implementation written in Go. This project aims to provide a robust and efficient Nostr relay that currently supports the NIP-01 of the nostr protocol.

## Features

- **NIP-01 Protocol Support**: GRAIN (nearly)fully supports NIP-01 for WebSocket communication.
- **Event Processing**: Handles all events by category and kind.
- **MongoDB 🍃**: Utilizes MongoDB to store and manage events efficiently.
- **Scalability**: Built with Go, ensuring high performance and scalability.
- **Open Source**: Licensed under the MIT License, making it free to use and modify.

## Configuration

Configuration options can be set through a configuration file.

There is an example config in this repo. Copy the example config to config.yml to get started

```bash
cp config.example.yml config.yml
```

Additionally, you may set metadata Information for your relay with `relay_matadata.json`

```bash
cp relay_metadata.example.json relay_metadata.json
```

### TODO

- configurable event purging
  - by category
  - by kind
  - by time since latest
- create whitelist/blacklist functionality
  for:
  - valid nip05 domain
  - pubkey
  - npub
  - kind int
  - kind 1 wordlist

### Development

To contribute to GRAIN, follow these steps:

1. Fork the repository.
2. Make your changes.
3. Commit your changes:

   ```sh
   git commit -m "Description of changes"
   ```

4. Push to the repo:

   ```sh
   git push
   ```

5. Create a Pull Request.

### License

This project is Open Source and licensed under the MIT License. See the [LICENSE](license) file for details.

### Acknowledgments

Special thanks to the Nostr community for their continuous support and contributions.

Feel free to reach out with any questions or issues you encounter while using GRAIN. Happy coding!