using System;
using System.Collections.Generic;

namespace MileageTraker.Web.ViewModels.FuelLog
{
	public class FuelLogQueryViewModel
	{
		public int? Year { get; set; }
		public int? Month { get; set; }

		public string YearMonthStart {get
		{
			return string.Format("{0}-{1:00}", Year, Month);
		}}

		public override string ToString()
		{
			var v = new List<string>();

			if (Year.HasValue && Month.HasValue)
			{
				var str = YearMonthStart;

				v.Add(str);
			}
			else if (Year.HasValue)
			{
				v.Add(Year.ToString());
			}
			
			return String.Join("_", v).Replace(' ', '-');
		}

		public bool HasParameters()
		{
			return Year.HasValue;
		}
	}
}