From 597fe9c9ce621a03547138fcb56473c3acab7b4d Mon Sep 17 00:00:00 2001
From: Aleksander Heintz <alxandr@alxandr.me>
Date: Tue, 17 Dec 2024 14:44:08 +0100
Subject: [PATCH] feat: add `ProblemInstanceException`

Also add `EnsureSuccess` to `Result<T>`.
---
 .../ProblemInstanceException.cs               | 23 +++++++++++++++++++
 .../src/ProblemDetails.Abstractions/Result.cs | 13 +++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 src/Altinn.Authorization.ProblemDetails/src/ProblemDetails.Abstractions/ProblemInstanceException.cs

diff --git a/src/Altinn.Authorization.ProblemDetails/src/ProblemDetails.Abstractions/ProblemInstanceException.cs b/src/Altinn.Authorization.ProblemDetails/src/ProblemDetails.Abstractions/ProblemInstanceException.cs
new file mode 100644
index 0000000..bc4cb18
--- /dev/null
+++ b/src/Altinn.Authorization.ProblemDetails/src/ProblemDetails.Abstractions/ProblemInstanceException.cs
@@ -0,0 +1,23 @@
+namespace Altinn.Authorization.ProblemDetails;
+
+/// <summary>
+/// An exception that represents a <see cref="ProblemInstance"/>.
+/// </summary>
+public class ProblemInstanceException
+    : InvalidOperationException
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ProblemInstanceException"/> class.
+    /// </summary>
+    /// <param name="problemInstance">The <see cref="ProblemInstance"/>.</param>
+    public ProblemInstanceException(ProblemInstance problemInstance)
+        : base(problemInstance.Detail)
+    {
+        ProblemInstance = problemInstance;
+    }
+
+    /// <summary>
+    /// Gets the <see cref="ProblemInstance"/>.
+    /// </summary>
+    public ProblemInstance ProblemInstance { get; }
+}
diff --git a/src/Altinn.Authorization.ProblemDetails/src/ProblemDetails.Abstractions/Result.cs b/src/Altinn.Authorization.ProblemDetails/src/ProblemDetails.Abstractions/Result.cs
index 637a4d7..0cf9f2b 100644
--- a/src/Altinn.Authorization.ProblemDetails/src/ProblemDetails.Abstractions/Result.cs
+++ b/src/Altinn.Authorization.ProblemDetails/src/ProblemDetails.Abstractions/Result.cs
@@ -49,6 +49,19 @@ public bool IsSuccess
         get => _problem is null;
     }
 
+    /// <summary>
+    /// Ensures that the operation succeeded.
+    /// </summary>
+    /// <exception cref="ProblemInstanceException">Thrown if the operation failed.</exception>
+    [MemberNotNull(nameof(Value))]
+    public void EnsureSuccess()
+    {
+        if (!IsSuccess)
+        {
+            throw new ProblemInstanceException(_problem!);
+        }
+    }
+
     /// <summary>
     /// Gets the problem instance if the operation failed, otherwise <see langword="null"/>.
     /// </summary>