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mod args;
mod handler;
mod tls;

use std::net::TcpListener;
use std::sync::Arc;
use std::thread;

fn main() {
    let args = args::parse_args();

    if args.init {
        match zagan_bet::server::setup::init_identity(std::path::Path::new("."), "localhost") {
            Ok(report) => {
                println!("TLS identity created:");
                println!("  {} (PKCS#12, empty password)", report.identity.display());
                println!("  {} (private key)", report.key.display());
                println!("  {} (certificate)", report.cert.display());
                println!("\nStart the server with:\n  cargo run --bin server");
                println!("Clients will trust this certificate on first contact.");
            }
            Err(error) => {
                eprintln!("TLS setup failed:\n{error}");
                std::process::exit(1);
            }
        }
        return;
    }

    let listener = match TcpListener::bind(format!("{}:{}", args.ip, args.port)) {
        Ok(l) => l,
        Err(e) => {
            eprintln!("Failed to bind to {}:{}: {}", args.ip, args.port, e);
            std::process::exit(1);
        }
    };

    let tls = match tls::TlsServer::new("identity.p12") {
        Ok(t) => Arc::new(t),
        Err(e) => {
            eprintln!("Failed to initialize TLS: {}", e);
            std::process::exit(1);
        }
    };

    println!(
        "Server listening on {} (TLS enabled){}",
        listener.local_addr().unwrap(),
        if args.unsafe_mode {
            " [UNSAFE MODE]"
        } else {
            ""
        }
    );
    for stream in listener.incoming() {
        let stream = stream.unwrap();
        let tls = tls.clone();
        thread::spawn(move || match tls.accept(stream) {
            Ok(tls_stream) => {
                handler::handle_client_tls(tls_stream);
            }
            Err(e) => {
                eprintln!("TLS handshake failed: {}", e);
            }
        });
    }
}