refactor: migrate UI components to nebula module

pkg/gateway/internal/session/middleware.go

@@ -1,7 +1,11 @@
 package session
 
 import (
+	"regexp"
+	"strings"
+
 	"github.com/labstack/echo/v4"
+	"github.com/onsonr/sonr/pkg/common"
 	"gorm.io/gorm"
 )
 
@@ -17,3 +21,31 @@ func Middleware(db *gorm.DB) echo.MiddlewareFunc {
 		}
 	}
 }
+
+func extractBrowserInfo(c echo.Context) (string, string) {
+	userAgent := common.HeaderRead(c, common.UserAgent)
+	if userAgent == "" {
+		return "N/A", "-1"
+	}
+
+	var name, ver string
+	entries := strings.Split(strings.TrimSpace(userAgent), ",")
+	for _, entry := range entries {
+		entry = strings.TrimSpace(entry)
+		re := regexp.MustCompile(`"([^"]+)";v="([^"]+)"`)
+		matches := re.FindStringSubmatch(entry)
+
+		if len(matches) == 3 {
+			browserName := matches[1]
+			version := matches[2]
+
+			if browserName != common.BrowserNameUnknown.String() &&
+				browserName != common.BrowserNameChromium.String() {
+				name = browserName
+				ver = version
+				break
+			}
+		}
+	}
+	return name, ver
+}