mod mime;
mod server;
use std::env;

fn help() {
    let version = match option_env!("CARGO_PKG_VERSION") {
        Some(v) => v,
        None => "",
    };

    println!("usage: sheldond {}", version);
    println!("  -h, --help\t\tdisplay this message");
    println!("  -l, --listen\t\tadd a listening address (you can define multiple)");
    println!("  -d, --default-host\tdefault hostname to listen for");
    println!("  -g, --gem-root\tpath to the gemini root, aka the folder to serve files from");
    println!("      --user\tuser to drop to after opening TLS socket");
    println!("      --group\tgroup to drop to after opening TLS socket");
}

fn parse_args() -> Option<server::ServerConfig> {
    let mut has_addr = false;
    let mut has_host = false;
    let mut has_root = false;
    let mut has_user = false;
    let mut has_group = false;

    let mut config = server::ServerConfig::new();
    let mut args = env::args();
    loop {
        match args.next() {
            Some(arg) => {
                if arg == "-h" || arg == "--help" {
                    return None;
                }
                if arg == "-l" || arg == "--listen" {
                    let addr = args.next().unwrap();
                    config.add_addr(addr);
                    has_addr = true;
                }
                if arg == "-d" || arg == "--default-host" {
                    let host = args.next().unwrap();
                    config.set_default_host(host);
                    has_host = true;
                }
                if arg == "-g" || arg == "--gem-root" {
                    let gem_root = args.next().unwrap();
                    config.set_gem_root(gem_root);
                    has_root = true;
                }
                if arg == "--user" {
                    let user = args.next().unwrap();
                    config.set_user(user);
                    has_user = true;
                }
                if arg == "--group" {
                    let group = args.next().unwrap();
                    config.set_group(group);
                    has_group = true;
                }
            }
            None => break,
        }
    }

    if !has_addr || !has_host || !has_root || !has_user || !has_group {
        return None;
    }

    Some(config)
}

fn main() {
    let config = match parse_args() {
        Some(config) => config,
        None => {
            help();
            return;
        }
    };

    let server = server::Server::new(&config);
    server.serve();
}