🧱 Render email based on razor components

DysonNetwork.Sphere/Account/Email/RazorViewRenderer.cs

@@ -0,0 +1,47 @@
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Components.Web;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Abstractions;
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+using Microsoft.AspNetCore.Mvc.Razor;
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.AspNetCore.Mvc.ViewEngines;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using RouteData = Microsoft.AspNetCore.Routing.RouteData;
+
+namespace DysonNetwork.Sphere.Account.Email;
+
+public class RazorViewRenderer(
+    IServiceProvider serviceProvider,
+    ILoggerFactory loggerFactory,
+    ILogger<RazorViewRenderer> logger
+)
+{
+    public async Task<string> RenderComponentToStringAsync<TComponent, TModel>(TModel model) 
+        where TComponent : IComponent
+    {
+        await using var htmlRenderer = new HtmlRenderer(serviceProvider, loggerFactory);
+        
+        var viewDictionary = new ViewDataDictionary<TModel>(
+            new EmptyModelMetadataProvider(),
+            new ModelStateDictionary())
+        {
+            Model = model
+        };
+        
+        return await htmlRenderer.Dispatcher.InvokeAsync(async () =>
+        {
+            try 
+            {
+                var parameterView = ParameterView.FromDictionary(viewDictionary);
+                var output = await htmlRenderer.RenderComponentAsync<TComponent>(parameterView);
+                return output.ToHtmlString();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Error rendering component {ComponentName}", typeof(TComponent).Name);
+                throw;
+            }
+        });
+    }
+}