using System;

namespace Module.ProjectValidator
{
    [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = true)]
    public sealed class RequiredAttribute : Attribute
    {
        private readonly EValidatorSeverity _severity;

        public RequiredAttribute()
        {
            _severity = EValidatorSeverity.Error;
        }
        
        public RequiredAttribute(EValidatorSeverity severity)
        {
            _severity = severity;
        }
        
        public sealed class Validator : IAttributeValidator<RequiredAttribute>
        {
            public ValidatorResult Validate(RequiredAttribute attribute, object value)
            {
                var isValid = value is UnityEngine.Object obj ? obj != null : value != null;
                return isValid ? ValidatorResult.Valid : ValidatorResult.Create(attribute._severity, "Value is Null");
            }
        }
    }
}