using System.Collections.ObjectModel;
using System.Linq;
using ShareeBike.Model.Bikes.BikeInfoNS;

namespace ShareeBike.ViewModel.Bikes.Bike
{
	/// <summary>
	/// View model for displaying tariff info.
	/// </summary>
	public class TariffDescriptionViewModel
	{
		private const string TRACKINGKEY = "TRACKING";

		private const string RIDETYPEKEY = "AAFAHRTEN";

		public TariffDescriptionViewModel(IRentalDescription tariff)
		{
			Name = tariff?.Name ?? string.Empty;

			TariffEntries = tariff != null && tariff?.TariffEntries != null
				? new ObservableCollection<RentalDescription.TariffElement>(tariff.TariffEntries.OrderBy(x => x.Key).Select(x => x.Value))
				: new ObservableCollection<RentalDescription.TariffElement>();

			// Add all entires except the known entries which are kept as properties.
			InfoEntries = tariff != null && tariff?.InfoEntries != null
				? new ObservableCollection<string>(tariff.InfoEntries
				.Where(x => x.Value.Key.ToUpper() != TRACKINGKEY
					&& x.Value.Key.ToUpper() != RIDETYPEKEY)
				.OrderBy(x => x.Key)
				.Select(x => x.Value.Value))
				: new ObservableCollection<string>();

			RideTypeText = tariff?.InfoEntries != null ? tariff?.InfoEntries?.FirstOrDefault(x => x.Value.Key.ToUpper() == RIDETYPEKEY).Value?.Value ?? string.Empty : string.Empty;

			TrackingInfoText = tariff?.InfoEntries != null ? tariff?.InfoEntries?.FirstOrDefault(x => x.Value.Key.ToUpper() == TRACKINGKEY).Value?.Value ?? string.Empty : string.Empty;
		}

		/// <summary>
		/// Holds the name of the tariff.
		/// </summary>
		public string Name { get; set; }

		/// <summary>
		/// Holds the tariff entries to display.
		/// </summary>
		public ObservableCollection<RentalDescription.TariffElement> TariffEntries { get; private set; }

		/// <summary>
		/// Holds the info entries to display.
		/// </summary>
		public ObservableCollection<string> InfoEntries { get; private set; }

		/// <summary>
		/// Holds the tracking info text or empty if not applicable.
		/// </summary>
		public string RideTypeText { get; private set; }

		/// <summary>
		/// Holds the tracking info text or empty if not applicable.
		/// </summary>
		public string TrackingInfoText { get; private set; }

		public RentalDescription.TariffElement TarifEntry1 => TariffEntries.Count > 0 ? TariffEntries[0] : new RentalDescription.TariffElement();
		public RentalDescription.TariffElement TarifEntry2 => TariffEntries.Count > 1 ? TariffEntries[1] : new RentalDescription.TariffElement();
		public RentalDescription.TariffElement TarifEntry3 => TariffEntries.Count > 2 ? TariffEntries[2] : new RentalDescription.TariffElement();
		public RentalDescription.TariffElement TarifEntry4 => TariffEntries.Count > 3 ? TariffEntries[3] : new RentalDescription.TariffElement();
		public RentalDescription.TariffElement TarifEntry5 => TariffEntries.Count > 4 ? TariffEntries[4] : new RentalDescription.TariffElement();
		public RentalDescription.TariffElement TarifEntry6 => TariffEntries.Count > 5 ? TariffEntries[5] : new RentalDescription.TariffElement();
		public RentalDescription.TariffElement TarifEntry7 => TariffEntries.Count > 6 ? TariffEntries[6] : new RentalDescription.TariffElement();
		public RentalDescription.TariffElement TarifEntry8 => TariffEntries.Count > 7 ? TariffEntries[7] : new RentalDescription.TariffElement();
		public RentalDescription.TariffElement TarifEntry9 => TariffEntries.Count > 8 ? TariffEntries[8] : new RentalDescription.TariffElement();

		public string InfoEntry1 => InfoEntries.Count > 0 ? InfoEntries[0] : string.Empty;
		public string InfoEntry2 => InfoEntries.Count > 1 ? InfoEntries[1] : string.Empty;
		public string InfoEntry3 => InfoEntries.Count > 2 ? InfoEntries[2] : string.Empty;
		public string InfoEntry4 => InfoEntries.Count > 3 ? InfoEntries[3] : string.Empty;
		public string InfoEntry5 => InfoEntries.Count > 4 ? InfoEntries[4] : string.Empty;
	}
}