using EnVisage.Code;
using System;
using System.Collections.Generic;
using System.Web.Mvc;

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

            var hasActuals = ((bool?)GetPropertyValue("HasActuals", metadata, context) ?? false);
            var deadline = (DateTime?)GetPropertyValue("ProjectDeadline", metadata, context);
            var actualsenddate = (long?)GetPropertyValue("ActualsEndDate", metadata, context);

            rule.ValidationParameters["hasactuals"] = Convert.ToInt32(hasActuals);
            rule.ValidationParameters["projectdeadline"] = deadline.HasValue ? Utils.ConvertToUnixDate(deadline.Value) : 0;
            rule.ValidationParameters["actualsenddate"] = actualsenddate > 0 ? Constants.UnixEpochDate.AddMilliseconds(actualsenddate.Value).AddDays(7).Subtract(Constants.UnixEpochDate).TotalMilliseconds : 0;

            yield return rule;
        }
    }
}