Add 404 page

dict/main.go

@@ -431,6 +431,20 @@ func main() {
 		},
 		[]string{http.MethodGet},
 	))
-	r.PathPrefix("/").Handler(http.FileServer(http.Dir("static")))
+	r.NotFoundHandler = http.HandlerFunc(httputils.GenerateHandler(
+		func(w http.ResponseWriter, r *http.Request) bool { return true },
+		httputils.NewTemplateSet("index.html", "404.html"),
+		func(w http.ResponseWriter, r *http.Request) (template string, data any) {
+			w.WriteHeader(http.StatusNotFound)
+			return "404.html", nil
+		},
+		[]string{http.MethodGet},
+	))
+	r.Path("/logo.svg").Handler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		http.ServeFile(w, r, "static/logo.svg")
+	}))
+	r.Path("/overrides.css").Handler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		http.ServeFile(w, r, "static/overrides.css")
+	}))
 	log.Fatal(http.ListenAndServe(":3334", r))
 }

dict/templates/404.html

@@ -0,0 +1,11 @@
+{{- define "title" }}404 Not Found - {{ template "sitetitle" . }}{{- end -}}
+
+{{- define "results" -}}
+<div class="center">
+    <br>
+    <h1>404 Not Found</h1>
+    <p>Looks like this page doesn't exist?</p>
+</div>
+{{- end -}}
+
+{{- template "index" . -}}