use std::env;
use tide::prelude::*;
use tide_rustls::TlsListener;

async fn endpoint(req: tide::Request<()>) -> tide::Result<impl Into<tide::Response>> {
    Ok(json!({
        "localAddr": req.local_addr().unwrap_or("[unknown]"),
        "method": req.method().to_string(),
        "url": req.url().to_string()
    }))
}

fn main() -> std::io::Result<()> {
    async_std::task::block_on(async {
        let mut app = tide::new();
        app.at("*").all(endpoint);
        app.at("/").all(endpoint);

        if let (Ok(cert), Ok(key)) = (env::var("TIDE_CERT"), env::var("TIDE_KEY")) {
            app.listen(
                TlsListener::build()
                    .addrs("localhost:4433")
                    .cert(cert)
                    .key(key),
            )
            .await?;
        } else {
            eprintln!(
                "
To run this app locally:
* install https://github.com/FiloSottile/mkcert
* $ mkcert -key-file key.pem -cert-file cert.pem localhost 127.0.0.1 ::1
* $ env TIDE_CERT=cert.pem TIDE_KEY=key.pem cargo run --example hello_tls
* $ curl -v https://localhost:4433/secure
"
            );
        }

        Ok(())
    })
}