using System;
using System.Collections;
using log4net;
using Spring.Validation;
using System.ComponentModel.DataAnnotations;
using Sleis.Utility;

namespace Sleis.Validation.Spring
{
    public class NullableDecimalValidator : RequiredValidator
    {
        public string Provider { get; set; }
        public string MessageId { get; set; }

        internal static ILog Log;


        public NullableDecimalValidator()
        {
            Log = LogManager.GetLogger(this.GetType());            
        }
        

        public override bool Validate(object validationContext, IDictionary contextParams, IValidationErrors errors)
        {
            Log.DebugFormat("Validate({0},{1},{2})", validationContext, contextParams, errors);

            bool result = true;
             IValidationContextProvider contextProvider = validationContext as  IValidationContextProvider;
            if (EvaluateWhen(validationContext, contextParams))
            {
                Double? nullableDecimal = base.EvaluateTest(validationContext, contextParams).ConvertTo<Double?>();
                if (!nullableDecimal.HasValue)
                {
                    errors.AddError(Provider, new ErrorMessage(MessageId, contextProvider.ValidationContxt));                    
                    result = false;
                }
            }

            return result;
       
        }

         
    }
}