/*! The networking methods for our client components to call. In
particular, this file provides a send() method to handle connecting
to a server process and sending it data. */

use tokio::io::{AsyncReadExt, AsyncWriteExt};
use tokio::net::TcpStream;

use std::str;

// may need to change strings to byte vectors in the future
pub async fn send(addr: String, str: String) -> String {
    let mut stream = TcpStream::connect(&addr)
        .await
        .expect("Failed to create TcpStream");

    // send data
    stream
        .write_all(str.as_bytes())
        .await
        .expect("Failed to write data to stream");

    // read response
    let mut buf = vec![0; 1024];
    let n = stream
        .read(&mut buf)
        .await
        .expect("Failed to read data from socket");

    if n == 0 {
        return "".to_string();
    }

    str::from_utf8(&buf[0..n])
        .expect("Invalid UTF-8 sequence")
        .to_string()
}