use anyhow::Result; use axum::{ extract::Query, http::StatusCode, response::{Html, IntoResponse}, routing::get, Router, }; use include_dir::{include_dir, Dir}; use minijinja::{context, Environment}; use serde::Deserialize; use tokio::sync::oneshot; static TEMPLATES_DIR: Dir = include_dir!("$CARGO_MANIFEST_DIR/src/config/signup_tetrate/templates"); #[derive(Debug, Deserialize)] struct CallbackQuery { code: Option, error: Option, } /// Run the callback server using the provided listener. pub async fn run_callback_server( listener: tokio::net::TcpListener, code_tx: oneshot::Sender, shutdown_rx: oneshot::Receiver<()>, ) -> Result<()> { let app = Router::new().route("/", get(handle_callback)); let state = std::sync::Arc::new(tokio::sync::Mutex::new(Some(code_tx))); axum::serve(listener, app.with_state(state.clone()).into_make_service()) .with_graceful_shutdown(async move { let _ = shutdown_rx.await; }) .await?; Ok(()) } async fn handle_callback( Query(params): Query, state: axum::extract::State< std::sync::Arc>>>, >, ) -> impl IntoResponse { if let Some(error) = params.error { let mut env = Environment::new(); let template_content = TEMPLATES_DIR .get_file("error.html") .expect("error.html template not found") .contents_utf8() .expect("error.html is not valid UTF-8"); env.add_template("error", template_content).unwrap(); let tmpl = env.get_template("error").unwrap(); let rendered = tmpl.render(context! { error => error }).unwrap(); return (StatusCode::BAD_REQUEST, Html(rendered)); } if let Some(code) = params.code { let mut tx_guard = state.lock().await; if let Some(tx) = tx_guard.take() { let _ = tx.send(code); } let success_html = TEMPLATES_DIR .get_file("success.html") .expect("success.html template not found") .contents_utf8() .expect("success.html is not valid UTF-8"); return (StatusCode::OK, Html(success_html.to_string())); } let invalid_html = TEMPLATES_DIR .get_file("invalid.html") .expect("invalid.html template not found") .contents_utf8() .expect("invalid.html is not valid UTF-8"); (StatusCode::BAD_REQUEST, Html(invalid_html.to_string())) }