use axum::{Router, response::Html, routing::get};
use std::net::SocketAddr;
use std::path::Path;
use tokio::fs::File;
use tokio::io::{self, AsyncReadExt};
use tower_http::services::ServeDir;

#[tokio::main]
async fn main() {
    let app = Router::new()
        .route("/", get(handler))
        .route("/game", get(game))
        .nest_service("/web/assets", ServeDir::new("../web/assets"));

    let addr = SocketAddr::from(([0, 0, 0, 0], 3500));
    println!("listening on {}", addr);
    axum_server::bind(addr)
        .serve(app.into_make_service())
        .await
        .unwrap();
}

async fn handler() -> Html<String> {
    let html_content = read_html_from_file("../web/templates/view/index.html")
        .await
        .unwrap_or_else(|_| "<h1>Error loading HTML file</h1>".to_string());
    Html(html_content)
}

async fn game() -> Html<String> {
    let html_content = read_html_from_file("../web/templates/view/game.html")
        .await
        .unwrap_or_else(|_| "<h1>Error loading HTML file</h1>".to_string());
    Html(html_content)
}

async fn read_html_from_file<P: AsRef<Path>>(path: P) -> io::Result<String> {
    let mut file = File::open(path).await?;
    let mut contents = String::new();
    file.read_to_string(&mut contents).await?;
    Ok(contents)
}