use kurrentdb::{ Client, EventData };
use serde::{Serialize, Deserialize};
#[derive(Serialize, Deserialize, Debug)]
struct Foo {
    is_rust_a_nice_language: bool,
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Creates a client settings for a single node configuration.
    let settings = "kurrentdb://admin:changeit@localhost:2113".parse()?;
    let client = Client::new(settings)?;
    let payload = Foo {
        is_rust_a_nice_language: true,
    };
    // It is not mandatory to use JSON as a data format however KurrentDB
    // provides great additional value if you do so.
    let evt = EventData::json("language-poll", &payload)?;
    client
        .append_to_stream("language-stream", &Default::default(), evt)
        .await?;
    let mut stream = client
        .read_stream("language-stream", &Default::default())
        .await?;
    while let Some(event) = stream.next().await? {
        let event = event.get_original_event()
          .as_json::<Foo>()?;
        // Do something productive with the result.
        println!("{:?}", event);
    }
    Ok(())
}