mod server;
mod router;
mod response;

use std::path::PathBuf;
use std::sync::Arc;
use logger_rust::*;

use clap::Parser;

// 1CA:b6e8ae4ca8acae66aa3dfd3f0a377e91d041e4d7 ; added clap as a parser, its way cleaner
#[derive(Parser, Debug)]
#[command(name = "http-rs")]
#[command(about = "http-rs webserver")]
struct Arguments {
    /// port where we should serve on
    #[arg(short, long, default_value_t = 8080)]
    port : u16,

    /// where we should serve from
    #[arg(short, long, default_value = ".")]
    root: PathBuf,
    
    /// number of threads to run on
    #[arg(short, long)]
    threads: Option<usize>,
}


fn main() {
    let args = Arguments::parse();
    let root = Arc::new(args.root);

    if !root.exists() || !root.is_dir() {
        log_error!("Root {} isnt a valid directory", root.display());
        std::process::exit(1);
    }
    
    // moved num_cpus from server.rs to main.rs
    let threads = args.threads.unwrap_or_else(|| {
        std::thread::available_parallelism()
            .map(|n| n.get() * 2)
            .unwrap_or(8)
    });

    if let Err(_) = server::run(root, args.port, threads) {
        log_error!("port {} in use!", args.port);
    }

}