# MQTT RNV Publisher

A simple Rust application that publishes the RNV Live Station ticker into your MQTT Sever

## Dependencies

- tokio (with full features)
- rumqttc
- serde
- serde_json

## Usage

```bash
cargo run -- --broker 192.168.1.100 --port 1883 --interval 60 --station Lettestr
```

Or run the binary directly:

```bash
./target/debug/mqtt-publisher --broker <address> --port <port> --interval <seconds> --station <name>
```

### Arguments

- `--broker`: MQTT broker address (default: `localhost`)
- `--port`: MQTT broker port (default: `1883`)
- `--interval`: Interval in seconds between departure data fetches (default: `300`)
- `--station`: Station name to look up (default: `Lettestr`)

## MQTT Topics

The application publishes departure data to the following topics:

- `departure/station`: Station name
- `departure/outbound/station`: Outbound destination station
- `departure/outbound/line`: Outbound line number/name
- `departure/outbound/diff`: Seconds until outbound departure
- `departure/inbound/station`: Inbound destination station
- `departure/inbound/line`: Inbound line number/name
- `departure/inbound/diff`: Seconds until inbound departure
- `departure/failure`: Error message if data fetch fails

## Configuration

Edit `src/main.rs` to customize:
- Broker address (default: `localhost:1883`)
- MQTT topic (default: `test/topic`)
- Message payload