using System;
using System.ComponentModel.DataAnnotations;
using System.Linq;

namespace Szmedi.RvKits.Attributes
{
    [AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter)]
    public class MinimumAttribute : ValidationAttribute
    {
        public MinimumAttribute(double minValue = 0)
        {
            MinValue = minValue;
        }

        public double MinValue { get; }

        protected override ValidationResult IsValid(object value, ValidationContext validationContext)
        {
            return double.TryParse(value.ToString(), out double d) && d >= MinValue
                ? ValidationResult.Success
                : new ValidationResult("输入值超出范围");
        }
    }
}