use std::env;
use teamtalk::types::ChannelId;
use teamtalk::{Client, Event};

fn env_or(name: &str, default: &str) -> String {
    env::var(name).unwrap_or_else(|_| default.to_string())
}

fn env_or_i32(name: &str, default: i32) -> i32 {
    env::var(name)
        .ok()
        .and_then(|value| value.parse::<i32>().ok())
        .unwrap_or(default)
}

fn main() -> teamtalk::Result<()> {
    // Read connection settings from env with safe defaults.
    let host = env_or("TT_HOST", "127.0.0.1");
    let tcp = env_or_i32("TT_TCP", 10333);
    let udp = env_or_i32("TT_UDP", 10333);
    let nickname = env_or("TT_NICK", "RustBot");
    let username = env_or("TT_USER", "guest");
    let password = env_or("TT_PASS", "guest");
    let client_name = env_or("TT_CLIENT", "TeamTalkRust");
    let license_name = env_or("TT_LICENSE_NAME", "");
    let license_key = env_or("TT_LICENSE_KEY", "");

    // Initialize and connect.
    if !license_name.is_empty() && !license_key.is_empty() {
        teamtalk::set_license(&license_name, &license_key)?;
    }
    let client = Client::new()?;
    client.connect(&host, tcp, udp, false)?;

    // Event loop: login, join root, then wait.
    loop {
        if let Some((event, _msg)) = client.poll(100) {
            match event {
                Event::ConnectSuccess => {
                    client.login(&nickname, &username, &password, &client_name);
                }
                Event::MySelfLoggedIn => {
                    client.join_channel(ChannelId(1), "");
                }
                Event::ConnectionLost | Event::ConnectFailed => break,
                _ => {}
            }
        }
    }
    Ok(())
}
