twitchchat 0.4.1

use std::net::TcpStream;
use twitchchat::{Client, Message, UserConfig};

fn main() -> Result<(), Box<std::error::Error>> {
    // connect to twitch via a tcp stream, creating a read/write pair
    let (read, write) = {
        let stream = TcpStream::connect(twitchchat::TWITCH_IRC_ADDRESS)?;
        (stream.try_clone()?, stream)
    };

    // create the read adapter from the TcpStream
    let read = twitchchat::SyncReadAdapter::new(read);

    // create a config
    let conf = user_config();

    // create a client from the read/write pair
    let mut client = Client::new(read, write);

    // register with the server, using the config
    client.register(conf)?;

    // wait until the server tells us who we are
    let local = client.wait_for_ready()?;
    let mention = format!("@{}", local.display_name.unwrap());

    let w = client.writer();
    // join a channel
    w.join("museun")?;
    // send a message to the channel
    w.send("museun", "HeyGuys")?;

    // read until the connection ends
    while let Ok(msg) = client.read_message() {
        // if its a user message on a channel
        if let Message::PrivMsg(msg) = msg {
            println!("{}: {}", msg.user(), msg.message());
            if msg.message().contains(&mention) {
                w.send(msg.channel, "VoHiYo")?;
            }
        }
    }

    Ok(())
}

fn user_config() -> UserConfig {
    let (nick, pass) = (var("MY_TWITCH_NICK"), var("MY_TWITCH_PASS"));
    let config = UserConfig::builder()
        .nick(nick)
        .token(pass)
        .membership()
        .commands()
        .tags();;
    config.build().unwrap()
}

fn var(key: &str) -> String {
    std::env::var(key).unwrap_or_else(|_| panic!("please set the env var `{}`", key))
}