initial commit

static/static.go

@@ -0,0 +1,37 @@
+package static
+
+import (
+	"embed"
+	"io"
+	"io/fs"
+	"log"
+	"net/http"
+	"strings"
+)
+
+//go:embed app/dist
+var appFS embed.FS
+
+var Handler = func() http.HandlerFunc {
+	distFS, err := fs.Sub(appFS, "app/dist")
+	if err != nil {
+		log.Fatalln(err)
+	}
+	fileServer := http.FileServer(http.FS(distFS))
+	return func(w http.ResponseWriter, r *http.Request) {
+		path := strings.TrimPrefix(r.URL.Path, "/")
+		_, err := distFS.Open(path)
+		if err == nil || path == "" {
+			fileServer.ServeHTTP(w, r)
+			return
+		}
+		indexFile, err := distFS.Open("index.html")
+		if err != nil {
+			http.Error(w, "frontend build not found", http.StatusInternalServerError)
+			return
+		}
+		defer func() { _ = indexFile.Close() }()
+		stat, _ := indexFile.Stat()
+		http.ServeContent(w, r, "index.html", stat.ModTime(), indexFile.(io.ReadSeeker))
+	}
+}()