Fix Navigation when reloading on a virtual path (#1000)

Signed-off-by: Daniel Valdivia <18384552+dvaldivia@users.noreply.github.com>

restapi/configure_console.go

@@ -25,6 +25,7 @@ import (
 	"io/fs"
 	"log"
 	"net/http"
+	"regexp"
 	"strings"
 	"time"
 
@@ -234,14 +235,31 @@ func (w *notFoundRedirectRespWr) Write(p []byte) (int, error) {
 	return len(p), nil // Lie that we successfully wrote it
 }
 
+var reHrefIndex = regexp.MustCompile(`(?m)((href|src)="(.\/).*?")`)
+
 // wrapHandlerSinglePageApplication handles a http.FileServer returning a 404 and overrides it with index.html
 func wrapHandlerSinglePageApplication(h http.Handler) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		nfrw := &notFoundRedirectRespWr{ResponseWriter: w}
 		h.ServeHTTP(nfrw, r)
-		if nfrw.status == 404 {
+		if nfrw.status == 404 || r.URL.String() == "/" {
+			basePath := "/"
+			// For SPA mode we will replace relative paths with absolute unless we receive query param cp=y
+			if val, ok := r.URL.Query()["cp"]; ok && len(val) > 0 && val[0] == "y" {
+				basePath = "./"
+			}
+
 			indexPage, _ := portal_ui.GetStaticAssets().Open("build/index.html")
 			indexPageBytes, _ := io.ReadAll(indexPage)
+			if basePath != "./" {
+				indexPageStr := string(indexPageBytes)
+				for _, match := range reHrefIndex.FindAllStringSubmatch(indexPageStr, -1) {
+					toReplace := strings.Replace(match[1], match[3], basePath, 1)
+					indexPageStr = strings.Replace(indexPageStr, match[1], toReplace, 1)
+				}
+				indexPageBytes = []byte(indexPageStr)
+			}
+
 			w.Header().Set("Content-Type", "text/html; charset=utf-8")
 			http.ServeContent(w, r, "index.html", time.Now(), bytes.NewReader(indexPageBytes))
 		}