use clap::Parser;
use log::info;
use std::net::{IpAddr, TcpListener};

mod options;
mod server;

mod elastic_query;
mod elastic_response;
mod search_result;

#[derive(Parser, Debug)]
struct Args {
    #[clap(short, long, default_value = "::1")]
    bind_address: IpAddr,

    #[clap(short, long, default_value_t = 9876)]
    port: u16,
}

fn main() {
    env_logger::init();

    let args = Args::parse();
    let next_free_port = find_available_port(args.bind_address, args.port);

    info!("Starting server on port {}...", next_free_port);

    rouille::start_server((args.bind_address, next_free_port), move |request| {
        server::serve_request(request)
    });
}

fn find_available_port(address: IpAddr, from: u16) -> u16 {
    (from..u16::MAX)
        .find(|port| match TcpListener::bind((address, *port)) {
            Ok(_) => true,
            Err(_) => false,
        })
        .unwrap_or_else(|| panic!("Could not find any available port starting from {}!", from))
}