using System.ComponentModel.DataAnnotations;

namespace ShrlAlgoToolkit.RevitAddins.Attributes;

[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter)]
public sealed class GreaterThanAttribute : ValidationAttribute
{
    public GreaterThanAttribute(string propertyName)
    {
        PropertyName = propertyName;
    }

    public string PropertyName { get; }

    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
        object instance = validationContext.ObjectInstance,
            otherValue = instance.GetType().GetProperty(PropertyName).GetValue(instance);

        return ((IComparable)value).CompareTo(otherValue) > 0 ? ValidationResult.Success : new($"当前值小于{value}");
    }
}