feat(httpapi): websocket, router, embed static, main entrypoint

internal/httpapi/static.go

@@ -0,0 +1,35 @@
+package httpapi
+
+import (
+	"embed"
+	"io/fs"
+	"net/http"
+)
+
+//go:embed all:webdist
+var webDist embed.FS
+
+func (s *Server) staticHandler() http.Handler {
+	sub, err := fs.Sub(webDist, "webdist")
+	if err != nil {
+		panic(err)
+	}
+	fileServer := http.FileServer(http.FS(sub))
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// SPA fallback: если файла нет — отдать index.html
+		if _, err := fs.Stat(sub, trimLead(r.URL.Path)); err != nil && r.URL.Path != "/" {
+			r2 := r.Clone(r.Context())
+			r2.URL.Path = "/"
+			fileServer.ServeHTTP(w, r2)
+			return
+		}
+		fileServer.ServeHTTP(w, r)
+	})
+}
+
+func trimLead(p string) string {
+	if len(p) > 0 && p[0] == '/' {
+		return p[1:]
+	}
+	return p
+}