2 files changed, 68 insertions(+), 0 deletions(-)

A Core/NosSmooth.Core/Extensions/ResultExtensions.cs
M Core/NosSmooth.Core/NosSmooth.Core.csproj

@@ 0,0 1,67 @@
+//
+//  ResultExtensions.cs
+//
+//  Copyright (c) František Boháček. All rights reserved.
+//  Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.Text;
+using Microsoft.Extensions.Logging;
+using Remora.Results;
+
+namespace NosSmooth.Core.Extensions;
+
+/// <summary>
+/// Contains extension methods for <see cref="ResultExtensions"/>.
+/// </summary>
+public static class ResultExtensions
+{
+    /// <summary>
+    /// Logs the given result if it is errorful.
+    /// </summary>
+    /// <param name="logger">The logger.</param>
+    /// <param name="result">The result to log.</param>
+    /// <exception cref="InvalidOperationException">Thrown if the result was unsuccessful.</exception>
+    public static void LogResultError(this ILogger logger, IResult result)
+    {
+        if (result.IsSuccess)
+        {
+            throw new InvalidOperationException("The result was successful, it has to be unsuccessful to log it.");
+        }
+
+        switch (result.Error)
+        {
+            case AggregateError aggregateError:
+                logger.LogAggreggateError(aggregateError);
+                break;
+            default:
+                logger.LogNestedError(result);
+                break;
+        }
+    }
+
+    private static void LogAggreggateError(this ILogger logger, AggregateError error)
+    {
+        foreach (var result in error.Errors)
+        {
+            logger.LogResultError(result);
+        }
+    }
+
+    private static void LogNestedError(this ILogger logger, IResult? result)
+    {
+        if ((result?.IsSuccess ?? true) || result.Error is null)
+        {
+            throw new InvalidOperationException("The result was successful, it has to be unsuccessful to log it.");
+        }
+
+        var stringBuilder = new StringBuilder(result.Error.Message);
+        int index = 0;
+        while ((result = result?.Inner) is not null && result.Error is not null)
+        {
+            stringBuilder.Append($"\n  {index++}: {result.Error.Message}");
+        }
+
+        logger.LogError(stringBuilder.ToString());
+    }
+}<
\ No newline at end of file

@@ 7,6 7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
+      <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.0" />
       <PackageReference Include="Remora.Results" Version="7.1.0" />
     </ItemGroup>