From ca252dc30ff259ec5267e00605040fbf445b107d Mon Sep 17 00:00:00 2001
From: "Artemov Ivan (ZOXEXIVO)" <zoxexivo@gmail.com>
Date: Sat, 11 Feb 2023 01:54:00 +0300
Subject: [PATCH] Remove prerendering

---
 .../Prerender/Extensions/BotExtensions.cs     | 19 -----
 .../Prerender/PrerenderMiddeware.cs           | 69 -------------------
 src/Backend/Geen.Web/Startup.cs               |  5 +-
 3 files changed, 1 insertion(+), 92 deletions(-)
 delete mode 100644 src/Backend/Geen.Web/Application/Prerender/Extensions/BotExtensions.cs
 delete mode 100644 src/Backend/Geen.Web/Application/Prerender/PrerenderMiddeware.cs

diff --git a/src/Backend/Geen.Web/Application/Prerender/Extensions/BotExtensions.cs b/src/Backend/Geen.Web/Application/Prerender/Extensions/BotExtensions.cs
deleted file mode 100644
index 611c8f9..0000000
--- a/src/Backend/Geen.Web/Application/Prerender/Extensions/BotExtensions.cs
+++ /dev/null
@@ -1,19 +0,0 @@
-namespace Geen.Web.Application.Prerender.Extensions
-{
-    public static class BotExtensions
-    {
-        public static bool IsGoogleBot(this string userAgent)
-        {
-            userAgent = userAgent?.ToLower() ?? "";
-
-            return userAgent.Contains("google");
-        }
-
-        public static bool IsYandexBot(this string userAgent)
-        {
-            userAgent = userAgent?.ToLower() ?? "";
-
-            return userAgent.Contains("yandex");
-        }
-    }
-}
diff --git a/src/Backend/Geen.Web/Application/Prerender/PrerenderMiddeware.cs b/src/Backend/Geen.Web/Application/Prerender/PrerenderMiddeware.cs
deleted file mode 100644
index f47d35a..0000000
--- a/src/Backend/Geen.Web/Application/Prerender/PrerenderMiddeware.cs
+++ /dev/null
@@ -1,69 +0,0 @@
-using System.IO;
-using Geen.Data.Settings;
-using Microsoft.AspNetCore.Builder;
-using Microsoft.AspNetCore.Http.Extensions;
-using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
-
-namespace Geen.Web.Application.Prerender
-{
-    public static class PrerenderMiddeware
-    {
-        private const string PrerenderUrlParam = "?_escaped_fragment_=";
-
-        public static void UsePrerenderedHtmls(this IApplicationBuilder app)
-        {
-            app.Use(async (context, func) =>
-            {
-                var displayUrl = context.Request.GetEncodedPathAndQuery();
-
-                if (displayUrl.StartsWith("/api") || displayUrl.StartsWith("/metrics"))
-                {
-                    await func();
-                    return;
-                }
-
-                var userAgent = context.Request.Headers["User-Agent"].ToString();
-
-                if (displayUrl.EndsWith(PrerenderUrlParam))
-                {
-                    var staticPath = context.RequestServices
-                        .GetRequiredService<IOptions<GeenSettings>>()
-                        .Value.Prerender.StaticPath;
-
-                    var urlPath = context.Request.Path.ToString();
-
-                    if (urlPath.EndsWith("/"))
-                        urlPath = urlPath.Remove(urlPath.Length - 1);
-
-                    if (urlPath.Length == 0)
-                        urlPath = "/index";
-
-                    var staticFilePath = staticPath + urlPath + ".html";
-
-                    if (!File.Exists(staticFilePath))
-                    {
-                        var logger = context.RequestServices.GetService<ILogger<Program>>();
-
-                        logger.LogError("Path: {Path} does not exist", staticFilePath);
-
-                        context.Response.StatusCode = 404;
-                        return;
-                    }
-
-                    await using var stream = new FileStream(staticFilePath, FileMode.Open, FileAccess.Read);
-                    
-                    context.Response.ContentType = "text/html";
-
-                    await stream.CopyToAsync(context.Response.Body);
-
-                    return;
-                }
-
-                await func();
-            });
-        }
-
-    }
-}
diff --git a/src/Backend/Geen.Web/Startup.cs b/src/Backend/Geen.Web/Startup.cs
index 9c72cf5..dba8256 100644
--- a/src/Backend/Geen.Web/Startup.cs
+++ b/src/Backend/Geen.Web/Startup.cs
@@ -1,7 +1,6 @@
 using System;
 using System.IO.Compression;
 using Geen.Web.Application;
-using Geen.Web.Application.Prerender;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.ResponseCompression;
 using Microsoft.Extensions.Configuration;
@@ -75,9 +74,7 @@ public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory)
             app.UseResponseCompression();
             
             app.UseFallbackRedirects();
-            
-            app.UsePrerenderedHtmls();
-
+     
             app.UseStaticFiles(new StaticFileOptions
             {
                 OnPrepareResponse = context =>