mod certs;
mod constants;
mod error;
mod globals;
mod log;

use crate::{error::*, log::*};
use std::sync::Arc;

pub use crate::{
  certs::{CertsAndKeys, CryptoSource},
  globals::{AppConfig, AppConfigList, ProxyConfig, ReverseProxyConfig, TlsConfig, UpstreamUri},
};
pub mod reexports {
  pub use hyper::Uri;
  pub use rustls::{Certificate, PrivateKey};
}

#[cfg(all(feature = "http3-quinn", feature = "http3-s2n"))]
compile_error!("feature \"http3-quinn\" and feature \"http3-s2n\" cannot be enabled at the same time");

/// Entrypoint that creates and spawns tasks of reverse proxy services
pub async fn entrypoint<T>(
  proxy_config: &ProxyConfig,
  app_config_list: &AppConfigList<T>,
  runtime_handle: &tokio::runtime::Handle,
  term_notify: Option<Arc<tokio::sync::Notify>>,
) -> Result<()>
where
  T: CryptoSource + Clone + Send + Sync + 'static,
{
  // For initial message logging
  if proxy_config.listen_sockets.iter().any(|addr| addr.is_ipv6()) {
    info!("Listen both IPv4 and IPv6")
  } else {
    info!("Listen IPv4")
  }
  if proxy_config.http_port.is_some() {
    info!("Listen port: {}", proxy_config.http_port.unwrap());
  }
  if proxy_config.https_port.is_some() {
    info!("Listen port: {} (for TLS)", proxy_config.https_port.unwrap());
  }
  #[cfg(any(feature = "http3-quinn", feature = "http3-s2n"))]
  if proxy_config.http3 {
    info!("Experimental HTTP/3.0 is enabled. Note it is still very unstable.");
  }
  if !proxy_config.sni_consistency {
    info!("Ignore consistency between TLS SNI and Host header (or Request line). Note it violates RFC.");
  }
  #[cfg(feature = "cache")]
  if proxy_config.cache_enabled {
    info!(
      "Cache is enabled: cache dir = {:?}",
      proxy_config.cache_dir.as_ref().unwrap()
    );
  } else {
    info!("Cache is disabled")
  }

  // // build global
  // let globals = Arc::new(Globals {
  //   proxy_config: proxy_config.clone(),
  //   backends: app_config_list.clone().try_into()?,
  //   request_count: Default::default(),
  //   runtime_handle: runtime_handle.clone(),
  //   term_notify: term_notify.clone(),
  // });

  // // build message handler including a request forwarder
  // let msg_handler = Arc::new(
  //   HttpMessageHandlerBuilder::default()
  //     // .forwarder(Arc::new(Forwarder::new(&globals).await))
  //     .globals(globals.clone())
  //     .build()?,
  // );

  // let http_server = Arc::new(build_http_server(&globals));

  // let addresses = globals.proxy_config.listen_sockets.clone();
  // let futures = select_all(addresses.into_iter().map(|addr| {
  //   let mut tls_enabled = false;
  //   if let Some(https_port) = globals.proxy_config.https_port {
  //     tls_enabled = https_port == addr.port()
  //   }

  //   let proxy = ProxyBuilder::default()
  //     .globals(globals.clone())
  //     .listening_on(addr)
  //     .tls_enabled(tls_enabled)
  //     .http_server(http_server.clone())
  //     .msg_handler(msg_handler.clone())
  //     .build()
  //     .unwrap();

  //   globals.runtime_handle.spawn(async move { proxy.start().await })
  // }));

  // // wait for all future
  // if let (Ok(Err(e)), _, _) = futures.await {
  //   error!("Some proxy services are down: {}", e);
  // };

  Ok(())
}