Serve static files if no other endpoints match

src/main.rs

@@ -1,7 +1,11 @@
+mod r#static;
+
 use axum::{routing::get, Router};
 
 async fn run() -> anyhow::Result<()> {
-    let app = Router::new().route("/", get(|| async { "Hello, world!" }));
+    let app = Router::new()
+        .route("/", get(|| async { "Hello, world!" }))
+        .fallback(get(r#static::static_handler));
 
     axum::Server::bind(&"0.0.0.0:8000".parse().unwrap())
         .serve(app.into_make_service())

src/static.rs

@@ -0,0 +1,34 @@
+//! Static files embedded in the binary.
+
+use axum::{
+    http::{header, StatusCode, Uri},
+    response::IntoResponse,
+};
+use rust_embed::RustEmbed;
+
+#[derive(RustEmbed)]
+#[folder = "target/static"]
+pub struct StaticFiles;
+
+pub struct StaticFile<T>(T);
+
+impl<T> IntoResponse for StaticFile<T>
+where
+    T: AsRef<str>,
+{
+    fn into_response(self) -> axum::response::Response {
+        let path = self.0.as_ref();
+        match StaticFiles::get(path) {
+            Some(file) => {
+                let mime = mime_guess::from_path(path).first_or_octet_stream();
+                ([(header::CONTENT_TYPE, mime.as_ref())], file.data).into_response()
+            }
+            None => StatusCode::NOT_FOUND.into_response(),
+        }
+    }
+}
+
+pub async fn static_handler(uri: Uri) -> impl IntoResponse {
+    let path = uri.path().trim_start_matches('/').to_string();
+    StaticFile(path)
+}