feat(src/plugincore.aspnetcore): languageMiddleware: 当前 Language

src/PluginCore.AspNetCore/Extensions/PluginCoreStartupExtensions.cs

@@ -213,6 +213,8 @@ public static IApplicationBuilder UsePluginCore(this IApplicationBuilder app)
             // 一定在 PluginCore 添加的中间件中 第一个
             app.UseMiddleware<PluginHttpStartFilterMiddleware>();
 
+            app.UseLanguageMiddleware();
+
             app.UsePluginCoreAdminUI();
 
             // 由于没办法在运行时, 动态 UseStaticFiles(), 因此不再为每一个插件都 UseStaticFiles(),

src/PluginCore.AspNetCore/Middlewares/LanguageMiddleware.cs

@@ -0,0 +1,46 @@
+//===================================================
+//  License: GNU LGPLv3
+//  Contributors: yiyungent@gmail.com
+//  Project: https://yiyungent.github.io/PluginCore
+//  GitHub: https://github.com/yiyungent/PluginCore
+//===================================================
+
+
+
+using System;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
+using PluginCore.IPlugins;
+
+namespace PluginCore.AspNetCore.Middlewares;
+
+public class LanguageMiddleware
+{
+    private readonly RequestDelegate _next;
+
+    public LanguageMiddleware(RequestDelegate next)
+    {
+        _next = next;
+    }
+
+    public async Task Invoke(HttpContext httpContext)
+    {
+        // 从 Cookie 中获取语言标识
+        string language = httpContext.Request.Cookies[Constants.AspNetCoreLanguageCookieName];
+
+        // 存储当前语言到 HttpContext.Items
+        httpContext.Items[Constants.AspNetCoreLanguageKey] = language;
+
+        // 调用下一个中间件
+        await _next(httpContext);
+    }
+}
+
+public static class LanguageMiddlewareExtensions
+{
+    public static IApplicationBuilder UseLanguageMiddleware(this IApplicationBuilder builder)
+    {
+        return builder.UseMiddleware<LanguageMiddleware>();
+    }
+}