feat(notification): use default culture settings

aspnet-core/modules/realtime-notifications/LINGYUN.Abp.Notifications.Core/LINGYUN/Abp/Notifications/NotificationData.cs

@@ -71,7 +71,7 @@ public class NotificationData : IHasExtraProperties
         TrySetData("formUser", formUser);
         TrySetData("createTime", createTime);
         TrySetData(LocalizerKey, true);
-        TrySetData(CultureKey, culture ?? "en");
+        TrySetData(CultureKey, culture ?? CultureInfo.CurrentCulture.Name);
         if (description != null)
         {
             TrySetData("description", description);

aspnet-core/services/LY.MicroService.RealtimeMessage.HttpApi.Host/EventBus/Distributed/NotificationEventHandler.cs

@@ -17,6 +17,7 @@ using Volo.Abp.EventBus.Distributed;
 using Volo.Abp.Json;
 using Volo.Abp.Localization;
 using Volo.Abp.MultiTenancy;
+using Volo.Abp.Settings;
 using Volo.Abp.TextTemplating;
 using Volo.Abp.Uow;
 
@@ -43,6 +44,10 @@ namespace LY.MicroService.RealtimeMessage.EventBus.Distributed
         /// </summary>
         protected AbpNotificationsPublishOptions Options { get; }
         /// <summary>
+        /// Reference to <see cref="ISettingProvider"/>.
+        /// </summary>
+        protected ISettingProvider SettingProvider { get; }
+        /// <summary>
         /// Reference to <see cref="ICurrentTenant"/>.
         /// </summary>
         protected ICurrentTenant CurrentTenant { get; }
@@ -96,6 +101,7 @@ namespace LY.MicroService.RealtimeMessage.EventBus.Distributed
         /// </summary>
         public NotificationEventHandler(
             ICurrentTenant currentTenant,
+            ISettingProvider settingProvider,
             ITenantConfigurationCache tenantConfigurationCache,
             IJsonSerializer jsonSerializer,
             ITemplateRenderer templateRenderer,
@@ -112,6 +118,7 @@ namespace LY.MicroService.RealtimeMessage.EventBus.Distributed
             Options = options.Value;
             TenantConfigurationCache = tenantConfigurationCache;
             CurrentTenant = currentTenant;
+            SettingProvider = settingProvider;
             JsonSerializer = jsonSerializer;
             TemplateRenderer = templateRenderer;
             BackgroundJobManager = backgroundJobManager;
@@ -138,7 +145,8 @@ namespace LY.MicroService.RealtimeMessage.EventBus.Distributed
             var culture = eventData.Data.Culture;
             if (culture.IsNullOrWhiteSpace())
             {
-                culture = CultureInfo.CurrentCulture.Name;
+                var cultureSet = await SettingProvider.GetOrNullAsync(LocalizationSettingNames.DefaultLanguage);
+                culture = cultureSet ?? CultureInfo.CurrentCulture.Name;
             }
             using (CultureHelper.Use(culture, culture))
             {
@@ -173,7 +181,14 @@ namespace LY.MicroService.RealtimeMessage.EventBus.Distributed
             {
                 return;
             }
-
+            var culture = eventData.Data.TryGetData(NotificationData.CultureKey)?.ToString();
+            if (culture.IsNullOrWhiteSpace())
+            {
+                var cultureSet = await SettingProvider.GetOrNullAsync(LocalizationSettingNames.DefaultLanguage);
+                culture = cultureSet ?? CultureInfo.CurrentCulture.Name;
+            }
+            using (CultureHelper.Use(culture, culture))
+            {
                 if (notification.NotificationType == NotificationType.System)
                 {
                     using (CurrentTenant.Change(null))
@@ -193,6 +208,7 @@ namespace LY.MicroService.RealtimeMessage.EventBus.Distributed
                     await SendToTenantAsync(eventData.TenantId, notification, eventData);
                 }
             }
+        }
 
         protected async virtual Task SendToTenantAsync(
             Guid? tenantId,