use anyhow::*;
use futures_core::future::BoxFuture;
use futures_util::FutureExt;
use log::LevelFilter;
use northstar::{Server, Request, Response, GEMINI_PORT, Gemtext};

#[tokio::main]
async fn main() -> Result<()> {
    env_logger::builder()
        .filter_module("northstar", LevelFilter::Debug)
        .init();

    Server::bind(("localhost", GEMINI_PORT))
        .serve(handle_request)
        .await
}

fn handle_request(_request: Request) -> BoxFuture<'static, Result<Response>> {
    async move {
        let response = Gemtext::new()
            .preformatted("Northstar", include_str!("northstar_logo.txt"))
            .blank_line()
            .link("https://docs.rs/northstar", Some("Documentation"))
            .link("https://github.com/panicbit/northstar", Some("GitHub"))
            .blank_line()
            .heading(1, "Usage")
            .blank_line()
            .text("Add the latest version of northstar to your `Cargo.toml`.")
            .blank_line()
            .heading(2, "Manually")
            .blank_line()
            .preformatted("toml", r#"northstar = "0.3.0" # check crates.io for the latest version"#)
            .blank_line()
            .heading(2, "Automatically")
            .blank_line()
            .preformatted("sh", "cargo add northstar")
            .blank_line()
            .heading(1, "Generating a key & certificate")
            .blank_line()
            .preformatted("sh", concat!(
                "mkdir cert && cd cert\n",
                "openssl req -x509 -nodes -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365",
            ))
            .into();
        Ok(response)
    }
    .boxed()
}