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// vim: tabstop=4 shiftwidth=4 expandtab


use std::fs;
extern crate clap;
use actix_files;
use actix_web::{get, App, HttpResponse, HttpServer, Responder};


#[derive(Debug)]
struct RuntimeConfig {
    address: String,
    port: String,
}


#[actix_web::main]
async fn main() -> std::io::Result<()> {

    let cfg = get_runtime_config();

    println!("Binding to http://{}:{}", cfg.address, cfg.port);

    HttpServer::new(|| {
        App::new()
            .service(index)
            .service(actix_files::Files::new("/static", "./static"))  // you may append .show_files_listing()
    })
    .bind(format!("{}:{}", cfg.address, cfg.port))?
    .run()
    .await
}

fn get_runtime_config() -> RuntimeConfig {

    let cli_matches = clap::App::new("Actix Web Server")
        .about("Executable to run the web-template Web Server")
        .arg(clap::Arg::with_name("address")
            .help("The address to which the server binds")
            .long("address")
            .short("a")
            .takes_value(true)
            .default_value("127.0.0.1"))
        .arg(clap::Arg::with_name("port")
            .help("The port to which the server binds")
            .long("port")
            .short("p")
            .takes_value(true)
            .default_value("8080"))
        .get_matches();

    RuntimeConfig {
        address: cli_matches.value_of("address").unwrap().to_string(),
        port: cli_matches.value_of("port").unwrap().to_string(),
    }
}

#[get("/")]
async fn index() -> impl Responder {
    HttpResponse::Ok()
        .content_type("text/html")
        .body(fs::read_to_string("./static/index.html").unwrap())
    
}