using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web.Mvc;

namespace EnVisage.Models.ValidationAttributes.Scenarios
{
    public class DateForStartOfChangeValidatorAttribute : ValidationAttribute, IClientValidatable
    {
        public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
        {
            var rule = new ModelClientValidationRule
            {
                ErrorMessage = ErrorMessage,
                ValidationType = "dateforstartofchange"
            };

            var modelMetadata = ModelMetadataProviders.Current.GetMetadataForProperties(context.Controller.ViewData.Model, context.Controller.ViewData.Model.GetType());

            rule.ValidationParameters["hasactuals"] = Convert.ToInt32(modelMetadata.FirstOrDefault(x => x.PropertyName == "HasActuals").Model);
            rule.ValidationParameters["actualsenddate"] = Convert.ToInt64(modelMetadata.FirstOrDefault(x => x.PropertyName == "ActualsEndDate").Model);
            rule.ValidationParameters["scenariostartdateproperty"] = "StartDate";
            rule.ValidationParameters["scenarioenddateproperty"] = "EndDate";

            yield return rule;
        }
    }
}