bft-crdt-experiment/side-node/src/main.rs

use std::io::BufRead;

use bft_json_crdt::json_crdt::{BaseCrdt, SignedOp};
use cli::{parse_args, Commands};
use crdt::TransactionList;
use node::SideNode;
use tokio::{sync::mpsc, task};
use websocket::WebSocketClient;

pub(crate) mod cli;
pub(crate) mod crdt;
pub(crate) mod init;
pub(crate) mod keys;
pub(crate) mod node;
pub(crate) mod utils;
pub(crate) mod websocket;

#[tokio::main]
async fn main() {
    let args = parse_args();

    match &args.command {
        Some(Commands::Init { name }) => {
            let config = init::config::SideNodeConfig {
                name: name.to_string(),
            };

            let _ = init::init(utils::home(name), config);
        }
        Some(Commands::Run { name }) => {
            let mut node = setup(name).await;
            node.start().await;
        }
        None => println!("No command provided. Exiting. See --help for more information."),
    }
}

/// Wire everything up outside the application so we can test more easily later
async fn setup(name: &String) -> SideNode {
    let side_dir = utils::home(name);
    let keys = keys::load_from_file(side_dir);
    let (incoming_sender, incoming_receiver) = mpsc::channel::<SignedOp>(32);

    let (stdin_sender, stdin_receiver) = std::sync::mpsc::channel();
    task::spawn(async move {
        stdin_input(stdin_sender);
    });

    let crdt = BaseCrdt::<TransactionList>::new(&keys);
    let node = SideNode::new(crdt, keys, incoming_receiver, stdin_receiver);
    tokio::spawn(async move {
        WebSocketClient::start(incoming_sender).await;
    });
    println!("Node setup complete.");
    node
}

/// Wait for stdin terminal input and send it to the node if any arrives
fn stdin_input(stdin_sender: std::sync::mpsc::Sender<String>) {
    let stdin = std::io::stdin();
    let lines = stdin.lock().lines();
    for line in lines {
        println!("We're in stdin_input");
        let line = line.unwrap();
        stdin_sender.send(line).unwrap();
    }
}