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

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.Bike.BC.IBikeInfoMutable bike);

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

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

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

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

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

        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 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; }
    }
}