refactor HomeController

Author: isaacrlevin

Server/Controllers/HomeController.cs

@@ -1,3 +1,4 @@
+using Asp2017.Server.Helpers;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 
@@ -9,6 +10,7 @@
 using Microsoft.AspNetCore.Http;
 using System.Diagnostics;
 using System;
+using Asp2017.Server.Models;
 
 namespace AspCoreServer.Controllers
 {
@@ -17,39 +19,7 @@ public class HomeController : Controller
     [HttpGet]
     public async Task<IActionResult> Index()
     {
-      var nodeServices = Request.HttpContext.RequestServices.GetRequiredService<INodeServices>();
-      var hostEnv = Request.HttpContext.RequestServices.GetRequiredService<IHostingEnvironment>();
-
-      var applicationBasePath = hostEnv.ContentRootPath;
-      var requestFeature = Request.HttpContext.Features.Get<IHttpRequestFeature>();
-      var unencodedPathAndQuery = requestFeature.RawTarget;
-      var unencodedAbsoluteUrl = $"{Request.Scheme}://{Request.Host}{unencodedPathAndQuery}";
-
-      // ** TransferData concept **
-      // Here we can pass any Custom Data we want !
-
-      // By default we're passing down Cookies, Headers, Host from the Request object here
-      TransferData transferData = new TransferData();
-      transferData.request = AbstractHttpContextRequestInfo(Request);
-      transferData.thisCameFromDotNET = "Hi Angular it's asp.net :)";
-      // Add more customData here, add it to the TransferData class
-
-      //Prerender now needs CancellationToken
-      System.Threading.CancellationTokenSource cancelSource = new System.Threading.CancellationTokenSource();
-      System.Threading.CancellationToken cancelToken = cancelSource.Token;
-
-      // Prerender / Serialize application (with Universal)
-      var prerenderResult = await Prerenderer.RenderToString(
-                "/",
-                nodeServices,
-                cancelToken,
-                new JavaScriptModuleExport(applicationBasePath + "/ClientApp/dist/main-server"),
-                unencodedAbsoluteUrl,
-                unencodedPathAndQuery,
-                transferData, // Our simplified Request object & any other CustommData you want to send!
-                30000,
-                Request.PathBase.ToString()
-            );
+      var prerenderResult = await Prerender.BuildPrerender(Request);
 
       ViewData["SpaHtml"] = prerenderResult.Html; // our <app> from Angular
       ViewData["Title"] = prerenderResult.Globals["title"]; // set our <title> from Angular
@@ -87,31 +57,5 @@ public IActionResult Error()
     {
       return View();
     }
-
-    private IRequest AbstractHttpContextRequestInfo(HttpRequest request)
-    {
-
-      IRequest requestSimplified = new IRequest();
-      requestSimplified.cookies = request.Cookies;
-      requestSimplified.headers = request.Headers;
-      requestSimplified.host = request.Host;
-
-      return requestSimplified;
-    }
-  }
-
-  public class IRequest
-  {
-    public object cookies { get; set; }
-    public object headers { get; set; }
-    public object host { get; set; }
-  }
-
-  public class TransferData
-  {
-    public dynamic request { get; set; }
-
-    // Your data here ?
-    public object thisCameFromDotNET { get; set; }
   }
 }

Server/Helpers/HttpRequestExtensions.cs

@@ -0,0 +1,23 @@
+using Asp2017.Server.Models;
+using Microsoft.AspNetCore.Http;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Asp2017.Server.Helpers
+{
+    public static class HttpRequestExtensions
+    {
+    public static IRequest AbstractRequestInfo(this HttpRequest request)
+    {
+
+      IRequest requestSimplified = new IRequest();
+      requestSimplified.cookies = request.Cookies;
+      requestSimplified.headers = request.Headers;
+      requestSimplified.host = request.Host;
+
+      return requestSimplified;
+    }
+  }
+}

Server/Helpers/Prerender.cs

@@ -0,0 +1,54 @@
+using Asp2017.Server.Models;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.Features;
+using Microsoft.AspNetCore.NodeServices;
+using Microsoft.AspNetCore.SpaServices.Prerendering;
+using Microsoft.Extensions.DependencyInjection;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Asp2017.Server.Helpers
+{
+  public static class Prerender
+  {
+    public static async Task<RenderToStringResult> BuildPrerender(HttpRequest Request)
+    {
+      var nodeServices = Request.HttpContext.RequestServices.GetRequiredService<INodeServices>();
+      var hostEnv = Request.HttpContext.RequestServices.GetRequiredService<IHostingEnvironment>();
+
+      var applicationBasePath = hostEnv.ContentRootPath;
+      var requestFeature = Request.HttpContext.Features.Get<IHttpRequestFeature>();
+      var unencodedPathAndQuery = requestFeature.RawTarget;
+      var unencodedAbsoluteUrl = $"{Request.Scheme}://{Request.Host}{unencodedPathAndQuery}";
+
+      // ** TransferData concept **
+      // Here we can pass any Custom Data we want !
+
+      // By default we're passing down Cookies, Headers, Host from the Request object here
+      TransferData transferData = new TransferData();
+      transferData.request = Request.AbstractRequestInfo();
+      transferData.thisCameFromDotNET = "Hi Angular it's asp.net :)";
+      // Add more customData here, add it to the TransferData class
+
+      //Prerender now needs CancellationToken
+      System.Threading.CancellationTokenSource cancelSource = new System.Threading.CancellationTokenSource();
+      System.Threading.CancellationToken cancelToken = cancelSource.Token;
+
+      // Prerender / Serialize application (with Universal)
+      return await Prerenderer.RenderToString(
+                "/",
+                nodeServices,
+                cancelToken,
+                new JavaScriptModuleExport(applicationBasePath + "/ClientApp/dist/main-server"),
+                unencodedAbsoluteUrl,
+                unencodedPathAndQuery,
+                transferData, // Our simplified Request object & any other CustommData you want to send!
+                30000,
+                Request.PathBase.ToString()
+            );
+    }
+  }
+}

Server/Models/IRequest.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Asp2017.Server.Models
+{
+  public class IRequest
+  {
+    public object cookies { get; set; }
+    public object headers { get; set; }
+    public object host { get; set; }
+  }
+}

Server/Models/TransferData.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Asp2017.Server.Models
+{
+  public class TransferData
+  {
+    public dynamic request { get; set; }
+
+    // Your data here ?
+    public object thisCameFromDotNET { get; set; }
+  }
+}