using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using TINK.Model.Device;
using TINK.Model.User.Account;
using TINK.Repository.Request;

namespace TINK.Model.Connector
{
	public interface ICommand
	{
		/// <summary> Is raised whenever login state has changed.</summary>
		event LoginStateChangedEventHandler LoginStateChanged;

		/// <summary>
		/// Logs user in.
		/// If log in succeeds either and session might be updated if it was no more valid (logged in by an different device).
		/// If log in fails (password modified) session cookie is set to empty.
		/// If communication fails an exception is thrown.
		/// </summary>
		Task<IAccount> DoLogin(string p_strMail, string p_strPassword, string p_strDeviceId);

		/// <summary> Logs user out. </summary>
		Task DoLogout();

		/// <summary> Request to reserve a bike.</summary>
		/// <param name="bike">Bike to book.</param>
		Task DoReserve(Bikes.BikeInfoNS.BC.IBikeInfoMutable bike);

		/// <summary> Request to cancel a reservation.</summary>
		/// <param name="bike">Bike to book.</param>
		Task DoCancelReservation(Bikes.BikeInfoNS.BC.IBikeInfoMutable bike);

		/// <summary> Get authentication keys to connect to lock.</summary>
		/// <param name="bike">Bike to book.</param>
		Task CalculateAuthKeys(Bikes.BikeInfoNS.BluetoothLock.IBikeInfoMutable bike);

		/// <summary> Notifies COPRI about start of returning sequence. </summary>
		/// <remarks> Operator specific call.</remarks>
		/// <param name="bike">Bike to return.</param>
		/// <returns>Response on notification about start of returning sequence.</returns>
		Task StartReturningBike(Bikes.BikeInfoNS.BC.IBikeInfoMutable bike);

		/// <summary> Updates COPRI lock state for a booked bike. </summary>
		/// <param name="bike">Bike to update locking state for.</param>
		/// <param name="location">Geolocation of lock when returning bike.</param>
		/// <returns>Response on updating locking state.</returns>
		Task UpdateLockingStateAsync(Bikes.BikeInfoNS.BluetoothLock.IBikeInfoMutable bike, LocationDto location = null);

		/// <summary> Request to book a bike.</summary>
		/// <param name="bike">Bike to book.</param>
		Task DoBook(Bikes.BikeInfoNS.BC.IBikeInfoMutable bike);

		/// <summary> Request to book a bike and open its lock.</summary>
		/// <param name="bike">Bike to book and to open lock for.</param>
		Task BookAndOpenAync(Bikes.BikeInfoNS.CopriLock.IBikeInfoMutable bike);

		/// <summary> Request to open lock.</summary>
		/// <param name="bike">Bike for which lock has to be opened.</param>
		Task OpenLockAsync(Bikes.BikeInfoNS.CopriLock.IBikeInfoMutable bike);

		/// <summary> Request to close lock.</summary>
		/// <param name="bike">Bike for which lock has to be closed.</param>
		Task CloseLockAsync(Bikes.BikeInfoNS.CopriLock.IBikeInfoMutable bike);

		/// <summary> Request to return a bike.</summary>
		/// <param name="bike">Bike to return.</param>
		/// <param name="location">Geolocation of lock when returning bike.</param>
		/// <param name="smartDevice">Provides info about hard and software.</param>
		Task<BookingFinishedModel> DoReturn(Bikes.BikeInfoNS.BC.IBikeInfoMutable bike, LocationDto geolocation = null, ISmartDevice smartDevice = null);

		/// <summary> Request to return bike and close the lock.</summary>
		/// <param name="bike">Bike to return.</param>
		/// <param name="smartDevice">Provides info about hard and software.</param>
		Task<BookingFinishedModel> ReturnAndCloseAsync(Bikes.BikeInfoNS.CopriLock.IBikeInfoMutable bike, ISmartDevice smartDevice = null);

		/// <summary> True if connector has access to copri server, false if cached values are used. </summary>
		bool IsConnected { get; }

		/// <summary> True if user is logged in false if not. </summary>
		string SessionCookie { get; }

		/// <summary> Submits feedback for a renting operation.</summary>
		Task DoSubmitFeedback(
			IUserFeedback userFeedback,
			Uri opertorUri);

		/// <summary> Submits mini survey to copri server. </summary>
		/// <param name="answers">Collection of answers.</param>
		Task DoSubmitMiniSurvey(IDictionary<string, string> answers);

#if USCSHARP9
        /// <summary>
        /// Feedback given by user when returning bike.
        /// </summary>
        public interface IUserFeedback
        {
            /// <summary> Id of the bike to which the feedback is related to.</summary>
            string BikeId { get; }

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

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

	/// <summary>Defines delegate to be raised whenever login state changes.</summary>
	/// <param name="eventArgs">Holds session cookie and mail address if user logged in successfully.</param>
	public delegate void LoginStateChangedEventHandler(object sender, LoginStateChangedEventArgs eventArgs);

#if !USCSHARP9
	/// <summary>
	/// Feedback given by user when returning bike.
	/// </summary>
	public interface IUserFeedback
	{
		/// <summary> Id of the bike to which the feedback is related to.</summary>
		string BikeId { get; }

		/// <summary>
		/// Holds the current chargeing level of the battery in bars, null if unkonwn.
		/// </summary>
		int? CurrentChargeBars { get; set; }

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

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

	/// <summary> Event arguments to notify about changes of logged in state.</summary>
	public class LoginStateChangedEventArgs : EventArgs
	{
		public LoginStateChangedEventArgs() : this(string.Empty, string.Empty)
		{ }

		public LoginStateChangedEventArgs(string sessionCookie, string mail)
		{
			SessionCookie = sessionCookie;
			Mail = mail;
		}

		public string SessionCookie { get; }

		public string Mail { get; }
	}
}