feat: add webui embedding

pkg/webui/server.go

@@ -0,0 +1,36 @@
+package webui
+
+import (
+	"errors"
+	"io/fs"
+	"net/http"
+	"path"
+	"strings"
+
+	webuifs "github.com/christophwitzko/wg-hub/webui"
+)
+
+func getWebuiFS() http.FileSystem {
+	s, err := fs.Sub(webuifs.FS, "out")
+	if err != nil {
+		panic(err)
+	}
+	return http.FS(s)
+}
+
+func getWebuiServer() http.HandlerFunc {
+	wfs := getWebuiFS()
+	fileServer := http.FileServer(wfs)
+	return func(w http.ResponseWriter, r *http.Request) {
+		rPath := path.Clean(r.URL.Path)
+		if !strings.HasSuffix(rPath, "/") {
+			_, err := wfs.Open(rPath)
+			// if the file does not exist, try to serve the html file
+			if errors.Is(err, fs.ErrNotExist) {
+				rPath += ".html"
+				r.URL.Path = rPath
+			}
+		}
+		fileServer.ServeHTTP(w, r)
+	}
+}

pkg/webui/webui.go

@@ -27,8 +27,7 @@ func newServer(log *logrus.Logger, dev *device.Device, cfg *config.Config) *Serv
 		cfg:    cfg,
 		api:    api.NewAPIServer(log, dev, cfg),
 	}
-	fs := http.FileServer(http.Dir("webui/out"))
-	w.router.Get("/*", fs.ServeHTTP)
+	w.router.Get("/*", getWebuiServer())
 	w.router.Mount("/api", w.api)
 	return w
 }

webui/webui.go

@@ -0,0 +1,6 @@
+package webui
+
+import "embed"
+
+//go:embed out/*
+var FS embed.FS