feat(logging): implement GlobalExceptionHandler for centralized error handling

src/GroundsForSupport.Server/Logging/GlobalExceptionHandler.cs

@@ -0,0 +1,31 @@
+using Microsoft.AspNetCore.Diagnostics;
+using Microsoft.AspNetCore.Mvc;
+
+namespace GroundsForSupport.Server.Logging;
+
+internal sealed class GlobalExceptionHandler(ILogger<GlobalExceptionHandler> logger) : IExceptionHandler
+{
+  private readonly ILogger<GlobalExceptionHandler> _logger = logger;
+
+  public async ValueTask<bool> TryHandleAsync(
+    HttpContext httpContext,
+    Exception exception,
+    CancellationToken cancellationToken
+  )
+  {
+    _logger.LogError(exception, "Exception occurred: {Message}", exception.Message);
+
+    var problemDetails = new ProblemDetails
+    {
+      Status = StatusCodes.Status500InternalServerError,
+      Title = "Server Error",
+      Detail = "An internal error occurred."
+    };
+
+    httpContext.Response.StatusCode = problemDetails.Status.Value;
+
+    await httpContext.Response.WriteAsJsonAsync(problemDetails, cancellationToken);
+
+    return true;
+  }
+}

src/GroundsForSupport.Server/Program.cs

@@ -1,6 +1,7 @@
 using System.Text.Json;
 
 using GroundsForSupport.Server.Data;
+using GroundsForSupport.Server.Logging;
 using GroundsForSupport.Server.Payments.Endpoints;
 using GroundsForSupport.Server.Payments.Stripe;
 using GroundsForSupport.Server.RateLimiting;
@@ -13,6 +14,7 @@ builder.Services.AddOpenApi();
 
 builder.Services.AddValidation();
 
+builder.Services.AddExceptionHandler<GlobalExceptionHandler>();
 builder.Services.AddProblemDetails();
 
 builder.Services.AddHttpClient();
@@ -38,6 +40,8 @@ builder.Services.ConfigureHttpJsonOptions(
 
 var app = builder.Build();
 
+app.UseExceptionHandler();
+
 if (app.Environment.IsDevelopment())
 {
   app.MapOpenApi();