using System;
using System.Collections.Generic;
using TINK.Model.Bikes.Bike;
using TINK.Model.State;

namespace TINK.Model.Bike.BC
{
    public class BikeInfo : IBikeInfo
    {
        /// <summary> Default value of demo property. </summary>
        public const bool DEFAULTVALUEISDEMO = false;

        /// <summary> Holds the info about the bike state. </summary>
        private readonly IStateInfo m_oStateInfo;

        /// <summary>
        /// Holds the bike object.
        /// </summary>
        private Bike Bike { get; }

        /// <summary> Constructs a bike object.</summary>
        protected BikeInfo(
            IStateInfo stateInfo,
            int id,
            bool? isDemo = DEFAULTVALUEISDEMO,
            IEnumerable<string> group = null, 
            WheelType? wheelType = null,
            TypeOfBike? typeOfBike = null,
            string description = null,
            int? currentStationId = null,
            Uri operatorUri = null,
            TariffDescription tariffDescription = null) 
        {
            Bike = new Bike(id, wheelType, typeOfBike, description);

            m_oStateInfo = stateInfo;

            IsDemo = isDemo ?? DEFAULTVALUEISDEMO;
            Group = group ?? new List<string>();
            CurrentStation = currentStationId;
            OperatorUri = operatorUri;
            TariffDescription = tariffDescription;
        }

        public BikeInfo(BikeInfo bikeInfo) : this(
            bikeInfo?.State,
            bikeInfo?.Id ?? throw new ArgumentException($"Can not copy-construct {typeof(BikeInfo).Name}-object. Source must not be null."),
            bikeInfo.IsDemo,
            bikeInfo.Group,
            bikeInfo.WheelType,
            bikeInfo.TypeOfBike,
            bikeInfo.Description,
            bikeInfo.CurrentStation,
            bikeInfo.OperatorUri,
            bikeInfo.TariffDescription)  { }

        /// <summary>
        /// Constructs a bike info object for a available bike.
        /// </summary>
        /// <param name="id">Unique id of bike.</param>
        /// <param name="currentStationId">Id of station where bike is located.</param>
        /// <param name="operatorUri">Holds the uri of the operator or null, in case of single operator setup.</param>
        /// <param name="tariffDescription">Hold tariff description of bike.</param>
        /// <param name="wheelType"></param>
        public BikeInfo(
            int id,
            int? currentStationId,
            Uri operatorUri = null,
            TariffDescription tariffDescription = null,
            bool? isDemo = DEFAULTVALUEISDEMO,
            IEnumerable<string> group = null,
            WheelType? wheelType = null,
            TypeOfBike? typeOfBike = null,
            string description = null) : this(
                new StateInfo(),
                id, 
                isDemo, 
                group, 
                wheelType, 
                typeOfBike,
                description,
                currentStationId,
                operatorUri,
                tariffDescription)
        {
        }

        /// <summary>
        /// Constructs a bike info object for a requested bike.
        /// </summary>
        /// <param name="dateTimeProvider">Provider for current date time to calculate remainig time on demand for state of type reserved.</param>
        /// <param name="wheelType"></param>
        /// <param name="id">Unique id of bike.</param>
        /// <param name="stationId">Name of station where bike is located, null if bike is on the road.</param>
        /// <param name="operatorUri">Holds the uri of the operator or null, in case of single operator setup.</param>
        /// <param name="tariffDescription">Hold tariff description of bike.</param>
        /// <param name="requestedAt">Date time when bike was requested</param>
        /// <param name="mailAddress">Mail address of user which requested bike.</param>
        /// <param name="code">Booking code.</param>
        /// <param name="p_oDateTimeNowProvider">Date time provider to calculate reaining time.</param>
        public BikeInfo(
            int id,
            bool? isDemo,
            IEnumerable<string> group,
            WheelType? wheelType,
            TypeOfBike? typeOfBike,
            string description,
            int? stationId,
            Uri operatorUri,
            TariffDescription tariffDescription,
            DateTime requestedAt,
            string mailAddress,
            string code,
            Func<DateTime> dateTimeProvider = null) : this(
                new StateInfo(
                    dateTimeProvider,
                    requestedAt,
                    mailAddress,
                    code),
                id, 
                isDemo, 
                group, 
                wheelType, 
                typeOfBike,
                description,
                stationId,
                operatorUri,
                tariffDescription)
        {
        }

        /// <summary>
        /// Constructs a bike info object for a booked bike.
        /// </summary>
        /// <param name="dateTimeProvider">Provider for current date time to calculate remainig time on demand for state of type reserved.</param>
        /// <param name="wheelType"></param>
        /// <param name="id">Unique id of bike.</param>
        /// <param name="currentStationId">Name of station where bike is located, null if bike is on the road.</param>
        /// <param name="operatorUri">Holds the uri of the operator or null, in case of single operator setup.</param>
        /// <param name="tariffDescription">Hold tariff description of bike.</param>
        /// <param name="bookedAt">Date time when bike was booked</param>
        /// <param name="mailAddress">Mail address of user which booked bike.</param>
        /// <param name="code">Booking code.</param>
        public BikeInfo(
            int id,
            bool? isDemo,
            IEnumerable<string> group,
            WheelType? wheelType,
            TypeOfBike? typeOfBike,
            string description,
            int? currentStationId,
            Uri operatorUri,
            TariffDescription    tariffDescription,
            DateTime bookedAt,
            string mailAddress,
            string code) : this(
                new StateInfo(
                    bookedAt,
                    mailAddress,
                    code),
                id, 
                isDemo, 
                group, 
                wheelType, 
                typeOfBike,
                description,
                currentStationId,
                operatorUri,
                tariffDescription)
        {
        }

        /// <summary> True if device is demo device, false otherwise. </summary>
        public bool IsDemo { get; }

        /// <summary> Returns the group (TINK, Konrad, ...). </summary>
        public IEnumerable<string> Group { get; }

        /// <summary>
        /// Station a which bike is located, null otherwise.
        /// </summary>
        public int? CurrentStation { get; }

        /// <summary> Holds description about the tarif. </summary>
        public TariffDescription TariffDescription { get; }


        /// Holds the rent state of the bike.
        /// </summary>
        public IStateInfo State
        {
            get { return m_oStateInfo; }
        }

        public int Id => Bike.Id;

        public WheelType? WheelType => Bike.WheelType;

        public TypeOfBike? TypeOfBike => Bike.TypeOfBike;

        public string Description => Bike.Description;

        /// <summary>
        /// Uri of the operator or null, in case of single operator setup.
        /// </summary>
        public Uri OperatorUri { get; }

        /// <summary>
        /// Converts the instance to text.
        /// </summary>
        public new string ToString()
        {
            return $"Id={Bike.Id}{(Bike.WheelType != null ? $", wheel(s)={Bike.WheelType}" : string.Empty)}{(Bike.TypeOfBike != null ? $"type={Bike.TypeOfBike}" : "")}, state={State}, location={(CurrentStation.HasValue ? $"Station {CurrentStation}" : "On the road")}, is demo={IsDemo}.";
        }           
    }
}