use axum::routing::{get, post};
use axum::Router;
use axum_serde::Yaml;
use serde::{Deserialize, Serialize};
use std::net::SocketAddr;
use tokio::net::TcpListener;

#[derive(Deserialize, Serialize)]
pub struct Data {
    pub v0: usize,
    pub v1: usize,
}

pub async fn extractor(Yaml(_data): Yaml<Data>) {
    // use _data
}

pub async fn response() -> Yaml<Data> {
    todo!()
}

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    let router = Router::new()
        .route("/data", post(extractor))
        .route("/data", get(response));
    let listener = TcpListener::bind(&SocketAddr::from(([0u8, 0, 0, 0], 0u16))).await?;
    axum::serve(listener, router.into_make_service()).await?;
    Ok(())
}

use axum_serde::{
    extractor,
    macros::{DeserializeOwned, Serialize},
};

extractor!(
    MyFormat,                   // The name of the data format.
    MyFmt,                      // The actual type name of the HTTP extractor/response.
    "application/myfmt",        // The Content-Type that this extractor supports.
    from_slice,                 // A function identifier for deserializing data from the HTTP request body.
    String,                     // The type of error that can occur when deserializing from the request body.
    to_vec,                     // A function identifier for serializing the HTTP response body to bytes.
    myfmt                       // The test module name.
);

fn from_slice<T: DeserializeOwned>(_bytes: &[u8]) -> Result<T, String> {
    todo!()
}

fn to_vec<T: Serialize>(_value: &T) -> Result<Vec<u8>, String> {
    todo!()
}