Rollback API deleted by mistake on Webhook Client

src/Web/WebhookClient/Program.cs

@@ -14,6 +14,37 @@ builder.Services.AddControllers();
 var app = builder.Build();
 app.UseServiceDefaults();
 
+app.Map("/check", capp =>
+{
+    capp.Run(async (context) =>
+    {
+        if ("OPTIONS".Equals(context.Request.Method, StringComparison.InvariantCultureIgnoreCase))
+        {
+            var validateToken = bool.TrueString.Equals(builder.Configuration["ValidateToken"], StringComparison.InvariantCultureIgnoreCase);
+            var header = context.Request.Headers[HeaderNames.WebHookCheckHeader];
+            var value = header.FirstOrDefault();
+            var tokenToValidate = builder.Configuration["Token"];
+            if (!validateToken || value == tokenToValidate)
+            {
+                if (!string.IsNullOrWhiteSpace(tokenToValidate))
+                {
+                    context.Response.Headers.Add(HeaderNames.WebHookCheckHeader, tokenToValidate);
+                }
+                context.Response.StatusCode = (int)HttpStatusCode.OK;
+            }
+            else
+            {
+                await context.Response.WriteAsync("Invalid token");
+                context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
+            }
+        }
+        else
+        {
+            context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
+        }
+    });
+});
+
 // Fix samesite issue when running eShop from docker-compose locally as by default http protocol is being used
 // Refer to https://github.com/dotnet-architecture/eShopOnContainers/issues/1391
 app.UseCookiePolicy(new CookiePolicyOptions { MinimumSameSitePolicy = SameSiteMode.Lax });