Replace mime_guess dep with a simple function

Cargo.lock

@@ -94,7 +94,6 @@ dependencies = [
  "clap_mangen",
  "config",
  "futures-util",
- "mime_guess",
  "nix 0.30.1",
  "reqwest",
  "rgb",

Cargo.toml

@@ -34,7 +34,6 @@ tokio = { version = "1.44.2", features = ["full"] }
 futures-util = "0.3.31"
 tokio-stream = { version = "0.1.17", features = ["sync"] }
 rust-embed = "8.2.0"
-mime_guess = "2.0.4"
 tower-http = { version = "0.6.2", features = ["trace"] }
 tracing = "0.1.41"
 tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }

src/server.rs

@@ -1,6 +1,7 @@
 use std::future;
 use std::io;
 use std::net::SocketAddr;
+use std::path::Path;
 
 use axum::extract::connect_info::ConnectInfo;
 use axum::extract::ws::{self, CloseCode, CloseFrame, Message, WebSocket, WebSocketUpgrade};
@@ -71,15 +72,30 @@ async fn static_handler(uri: Uri) -> impl IntoResponse {
 
     match Assets::get(path) {
         Some(content) => {
-            let mime = mime_guess::from_path(path).first_or_octet_stream();
+            let mime = mime_from_path(path);
 
-            ([(header::CONTENT_TYPE, mime.as_ref())], content.data).into_response()
+            ([(header::CONTENT_TYPE, mime)], content.data).into_response()
         }
 
         None => (StatusCode::NOT_FOUND, "404").into_response(),
     }
 }
 
+fn mime_from_path(path: &str) -> &str {
+    let lowercase_path = &path.to_lowercase();
+
+    let ext = Path::new(lowercase_path)
+        .extension()
+        .and_then(|e| e.to_str());
+
+    match ext {
+        Some("html") => "text/html",
+        Some("js") => "text/javascript",
+        Some("css") => "text/css",
+        Some(_) | None => "application/octet-stream",
+    }
+}
+
 async fn ws_handler(
     ws: WebSocketUpgrade,
     ConnectInfo(addr): ConnectInfo<SocketAddr>,