2 files changed, 60 insertions, 0 deletions
diff --git a/MatrixUtils.Web.Server/Pages/Error.cshtml b/MatrixUtils.Web.Server/Pages/Error.cshtml
new file mode 100644
index 0000000..a29e836
--- /dev/null
+++ b/MatrixUtils.Web.Server/Pages/Error.cshtml
@@ -0,0 +1,41 @@
+@page
+@model MatrixUtils.Web.Server.Pages.ErrorModel
+
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="utf-8"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
+    <title>Error</title>
+    <link href="~/css/bootstrap/bootstrap.min.css" rel="stylesheet"/>
+    <link href="~/css/app.css" rel="stylesheet" asp-append-version="true"/>
+</head>
+
+<body>
+<div class="main">
+    <div class="Content px-4">
+        <h1 class="text-danger">Error.</h1>
+        <h2 class="text-danger">An error occurred while processing your request.</h2>
+
+        @if (Model.ShowRequestId) {
+            <p>
+                <strong>Request ID:</strong> <code>@Model.RequestId</code>
+            </p>
+        }
+
+        <h3>Development Mode</h3>
+        <p>
+            Swapping to the <strong>Development</strong> environment displays detailed information about the error that occurred.
+        </p>
+        <p>
+            <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+            It can result in displaying sensitive information from exceptions to end users.
+            For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+            and restarting the app.
+        </p>
+    </div>
+</div>
+</body>
+
+</html>
\ No newline at end of file
diff --git a/MatrixUtils.Web.Server/Pages/Error.cshtml.cs b/MatrixUtils.Web.Server/Pages/Error.cshtml.cs
new file mode 100644
index 0000000..3afc061
--- /dev/null
+++ b/MatrixUtils.Web.Server/Pages/Error.cshtml.cs
@@ -0,0 +1,19 @@
+using System.Diagnostics;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace MatrixUtils.Web.Server.Pages;
+
+[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
+[IgnoreAntiforgeryToken]
+public class ErrorModel : PageModel {
+    private readonly ILogger<ErrorModel> _logger;
+
+    public ErrorModel(ILogger<ErrorModel> logger) => _logger = logger;
+
+    public string? RequestId { get; set; }
+
+    public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
+
+    public void OnGet() => RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier;
+}