Initial commit

src/Utils/RequestValidationFilter.cs

@@ -0,0 +1,34 @@
+namespace TestWeb.Utils;
+
+public class RequestValidationFilter<TRequest>(
+    ILogger<RequestValidationFilter<TRequest>> logger,
+    IValidator<TRequest>? validator = null) : IEndpointFilter
+{
+    public async ValueTask<object?> InvokeAsync(
+        EndpointFilterInvocationContext context,
+        EndpointFilterDelegate next)
+    {
+        var requestName = typeof(TRequest).FullName;
+
+        if (validator is null)
+        {
+            logger.LogInformation("{Request}: No validator configured.", requestName);
+            return await next(context);
+        }
+
+        logger.LogInformation("{Request}: Validating...", requestName);
+        var request = context.Arguments.OfType<TRequest>().First();
+        var validationResult = await validator.ValidateAsync(
+            request,
+            context.HttpContext.RequestAborted
+        );
+        if (!validationResult.IsValid)
+        {
+            logger.LogWarning("{Request}: Validation failed.", requestName);
+            return TypedResults.ValidationProblem(validationResult.ToDictionary());
+        }
+
+        logger.LogInformation("{Request}: Validation succeeded.", requestName);
+        return await next(context);
+    }
+}