feat: Implement route-based culture navigation helper for improved localization handling

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly/Volo/Abp/AspNetCore/Components/WebAssembly/IRouteBasedCultureNavigationHelper.cs

@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Components;
+using Volo.Abp.Localization;
+
+namespace Volo.Abp.AspNetCore.Components.WebAssembly;
+
+public interface IRouteBasedCultureNavigationHelper
+{
+    Task NavigateToNewCultureAsync(
+        NavigationManager navigationManager,
+        LanguageInfo newLanguage,
+        IEnumerable<LanguageInfo> allLanguages);
+}

framework/src/Volo.Abp.AspNetCore.Components.WebAssembly/Volo/Abp/AspNetCore/Components/WebAssembly/RouteBasedCultureNavigationHelper.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Components;
+using Volo.Abp.DependencyInjection;
+using Volo.Abp.Localization;
+
+namespace Volo.Abp.AspNetCore.Components.WebAssembly;
+
+public class RouteBasedCultureNavigationHelper : IRouteBasedCultureNavigationHelper, ITransientDependency
+{
+    public virtual Task NavigateToNewCultureAsync(
+        NavigationManager navigationManager,
+        LanguageInfo newLanguage,
+        IEnumerable<LanguageInfo> allLanguages)
+    {
+        var relativePath = navigationManager.ToBaseRelativePath(navigationManager.Uri);
+        var slashIndex = relativePath.IndexOf('/');
+        var firstSegment = slashIndex >= 0 ? relativePath.Substring(0, slashIndex) : relativePath;
+
+        var allCultures = allLanguages.Select(l => l.CultureName);
+
+        var newRelativePath = allCultures.Any(c => string.Equals(c, firstSegment, StringComparison.OrdinalIgnoreCase))
+            ? newLanguage.CultureName + (slashIndex >= 0 ? relativePath.Substring(slashIndex) : string.Empty)
+            : newLanguage.CultureName + "/" + relativePath;
+
+        navigationManager.NavigateTo(navigationManager.ToAbsoluteUri(newRelativePath).ToString(), forceLoad: true);
+        return Task.CompletedTask;
+    }
+}

modules/basic-theme/src/Volo.Abp.AspNetCore.Components.WebAssembly.BasicTheme/Themes/Basic/LanguageSwitch.razor

@@ -2,12 +2,14 @@
 @using System.Globalization
 @using System.Collections.Immutable
 @using Volo.Abp.AspNetCore.Components.Web
+@using Volo.Abp.AspNetCore.Components.WebAssembly
 @using Volo.Abp.AspNetCore.Mvc.Client
 @inject ILanguageProvider LanguageProvider
 @inject IJSRuntime JsRuntime
 @inject ICookieService CookieService
 @inject NavigationManager NavigationManager
 @inject ICachedApplicationConfigurationClient ConfigurationClient
+@inject IRouteBasedCultureNavigationHelper CultureNavigationHelper
 @if (_otherLanguages != null && _otherLanguages.Any())
 {
     <BarDropdown RightAligned="true">
@@ -66,19 +68,8 @@
     {
         if (_useRouteBasedCulture)
         {
-            var relativePath = NavigationManager.ToBaseRelativePath(NavigationManager.Uri);
-            var slashIndex = relativePath.IndexOf('/');
-            var firstSegment = slashIndex >= 0 ? relativePath[..slashIndex] : relativePath;
-
-            var allCultures = _otherLanguages
-                .Select(l => l.CultureName)
-                .Append(_currentLanguage.CultureName);
-
-            var newRelativePath = allCultures.Any(c => string.Equals(c, firstSegment, StringComparison.OrdinalIgnoreCase))
-                ? language.CultureName + (slashIndex >= 0 ? relativePath[slashIndex..] : string.Empty)
-                : language.CultureName + "/" + relativePath;
-
-            NavigationManager.NavigateTo(NavigationManager.ToAbsoluteUri(newRelativePath).ToString(), forceLoad: true);
+            await CultureNavigationHelper.NavigateToNewCultureAsync(
+                NavigationManager, language, _otherLanguages.Append(_currentLanguage));
             return;
         }