using System;
using TINK.Model.Bikes.BikeInfoNS.DriveNS.BatteryNS;
using Xamarin.CommunityToolkit.UI.Views;
using Xamarin.Forms.Xaml;

namespace TINK.View
{
	[XamlCompilation(XamlCompilationOptions.Compile)]
	public partial class FeedbackPopup : Popup<FeedbackPopup.Result>
	{
		/// <summary> Constructs user feedback popup.</summary>
		/// <param name="battery">Object holding info about battery. For some batteries charging level might need to be updated by user.</param>
		/// <param name="co2Saving"> Co2 saving information.</param>
		public FeedbackPopup(
			IBattery battery = null,
			string co2Saving = null)
		{
			InitializeComponent();
			if (string.IsNullOrEmpty(co2Saving))
				Co2SavingFrame.IsVisible = false;
			else
				Co2SavingLabel.Text = co2Saving;

			if (battery == null
				|| (battery.IsBackendAccessible.HasValue && battery.IsBackendAccessible.Value))
			{
				// Either 
				// - bike has no engine or
				// - backend can access battery level information
				// No need to ask user for input.
				return;
			}

			BarLevelInputView.IsVisible = battery?.MaxChargeBars != null;
			BarLevelInputView.Current = battery?.CurrentChargeBars?.ToString() ?? string.Empty;
			BarLevelInputView.Maximum = battery?.MaxChargeBars != null ? battery?.MaxChargeBars.ToString() : String.Empty;

		}

		protected override FeedbackPopup.Result GetLightDismissResult()
		{
			return new Result
			{
				CurrentChargeBars = int.TryParse(BarLevelInputView.Current, out int current) ? (int?)current : null,
				IsBikeBroken = brockenCheckBox.IsChecked,
				Message = feedbackMessage.Text
			};
		}

		private void OnOkClicked(object sender, EventArgs eventArgs)
		{
			var result = new Result
			{
				CurrentChargeBars = int.TryParse(BarLevelInputView.Current, out int current) ? (int?)current : null,
				IsBikeBroken = brockenCheckBox.IsChecked,
				Message = feedbackMessage.Text
			};

			Dismiss(result);
		}

		/// <summary>
		/// Feedback given by user when returning bike.
		/// </summary>
#if USCSHARP9
		public class Result : IViewService.IUserFeedback
#else
		public new class Result : IUserFeedback
#endif
		{
			/// <summary>
			/// Holds the current charging level of the battery entered by user in bars, null if unknown.
			/// </summary>
			public int? CurrentChargeBars { get; set; }

			/// <summary>
			/// Holds whether bike is broken or not.
			/// </summary>
			public bool IsBikeBroken { get; set; }

			/// <summary>
			/// Holds either 
			/// - general feedback
			/// - error description of broken bike 
			/// or both.
			/// </summary>
			public string Message { get; set; }
		}
	}
}