1 files changed, 54 insertions, 0 deletions
diff --git a/VNLib.Plugins.Extensions.Validation/ValidationExtensions.cs b/VNLib.Plugins.Extensions.Validation/ValidationExtensions.cs
new file mode 100644
index 0000000..fd7880e
--- /dev/null
+++ b/VNLib.Plugins.Extensions.Validation/ValidationExtensions.cs
@@ -0,0 +1,54 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+
+using FluentValidation;
+using FluentValidation.Results;
+
+#nullable enable
+
+namespace VNLib.Plugins.Extensions.Validation
+{
+    /// <summary>
+    /// Provides shortcut methods to aid programmatic validation of objects
+    /// </summary>
+    public static class ValidationExtensions
+    {
+        /// <summary>
+        /// If <paramref name="assertion"/> evalues to false, sets the specified assertion message
+        /// to the <see cref="WebMessage.Result"/> to the specified string
+        /// </summary>
+        /// <param name="webm"></param>
+        /// <param name="assertion">The result of the assertion</param>
+        /// <param name="message">The error message to store when the value is false</param>
+        /// <returns>The inverse of <paramref name="assertion"/></returns>
+        public static bool Assert(this WebMessage webm, [DoesNotReturnIf(false)] bool assertion, string message)
+        {
+            if(!assertion)
+            {
+                webm.Success = false;
+                webm.Result = message;
+            }
+            return !assertion;
+        }
+        /// <summary>
+        /// Validates the specified instance, and stores errors to the specified <paramref name="webMessage"/>
+        /// and sets the <see cref="ValErrWebMessage.IsError"/>
+        /// </summary>
+        /// <param name="instance">The instance to validate</param>
+        /// <param name="validator"></param>
+        /// <param name="webMessage">The <see cref="ValErrWebMessage"/> to store errors to</param>
+        /// <returns>True if the result of the validation is valid, false otherwise and the <paramref name="webMessage"/> is not modified</returns>
+        public static bool Validate<T>(this IValidator<T> validator, T instance, ValErrWebMessage webMessage)
+        {
+            //Validate value
+            ValidationResult result = validator.Validate(instance);
+            //If not valid, set errors on web message
+            if (!result.IsValid)
+            {
+                webMessage.Success = false;
+                webMessage.Errors = result.GetErrorsAsCollection();
+            }
+            return result.IsValid;
+        }
+    }
+}