сборка сервера фронта в бинарник

server/go.mod

@@ -0,0 +1,3 @@
+module protoc-frontend-server
+
+go 1.25.5

server/main.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"embed"
+	"flag"
+	"fmt"
+	"io/fs"
+	"log"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+	"os"
+	"strings"
+)
+
+//go:embed dist/*
+var distFS embed.FS
+
+func main() {
+	port := flag.Int("port", 1112, "port to listen on")
+	apiTarget := flag.String("api", "http://localhost:8000", "backend API URL to proxy /api requests")
+	flag.Parse()
+
+	// Proxy for /api -> backend
+	backendURL, err := url.Parse(*apiTarget)
+	if err != nil {
+		log.Fatalf("invalid api url: %v", err)
+	}
+
+	proxy := httputil.NewSingleHostReverseProxy(backendURL)
+	originalDirector := proxy.Director
+	proxy.Director = func(r *http.Request) {
+		originalDirector(r)
+		// Rewrite /api/... -> /...
+		r.URL.Path = strings.TrimPrefix(r.URL.Path, "/api")
+		if r.URL.Path == "" {
+			r.URL.Path = "/"
+		}
+		r.Host = backendURL.Host
+	}
+
+	// Static files from embedded dist/
+	distSub, err := fs.Sub(distFS, "dist")
+	if err != nil {
+		log.Fatalf("failed to open embedded dist: %v", err)
+	}
+	fileServer := http.FileServer(http.FS(distSub))
+
+	mux := http.NewServeMux()
+
+	// API proxy
+	mux.HandleFunc("/api/", func(w http.ResponseWriter, r *http.Request) {
+		proxy.ServeHTTP(w, r)
+	})
+
+	// SPA: serve static files, fallback to index.html
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		// Try to serve the file directly
+		path := strings.TrimPrefix(r.URL.Path, "/")
+		if path == "" {
+			path = "index.html"
+		}
+
+		// Check if file exists in embedded FS
+		if f, err := distSub.Open(path); err == nil {
+			f.Close()
+			fileServer.ServeHTTP(w, r)
+			return
+		}
+
+		// Fallback to index.html for SPA routing
+		indexFile, err := fs.ReadFile(distSub, "index.html")
+		if err != nil {
+			http.Error(w, "index.html not found", http.StatusInternalServerError)
+			return
+		}
+		w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		w.Write(indexFile)
+	})
+
+	addr := fmt.Sprintf(":%d", *port)
+	log.Printf("Serving on http://localhost%s", addr)
+	log.Printf("API proxy -> %s", *apiTarget)
+
+	if err := http.ListenAndServe(addr, mux); err != nil {
+		log.Fatal(err)
+		os.Exit(1)
+	}
+}