using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using TINK.Model.Bike;
using TINK.Model.Bike.BluetoothLock;
using TINK.Services.BluetoothLock.Tdo;
using System;

namespace TINK.Services.BluetoothLock
{
    /// <summary>
    /// Facke locks service implementation which simulates locks which are out of reach.
    /// </summary>
    public class LocksServiceOutOfReach : ILocksServiceFake
    {
        private IEnumerable<LockInfoTdo> LocksInfo { get; set; } = new List<LockInfoTdo>();

        /// <summary> Holds timeout values for series of connecting attemps to a lock or multiple locks. </summary>
        public ITimeOutProvider TimeOut { get; set; }

        /// <summary> Connects to lock.</summary>
        /// <param name="authInfo"> Info required to connect to lock.</param>
        /// <param name="connectTimeout">Timeout for connect operation.</param>
        public async Task<LockInfoTdo> ConnectAsync(LockInfoAuthTdo authInfo, TimeSpan connectTimeout)
        {
            return await Task.FromResult(new LockInfoTdo.Builder { Id = authInfo.Id, Guid = authInfo.Guid, State = null }.Build());
        }

        /// <summary> No info availalbe because no lock is in reach.</summary>
        /// <param name="connectTimeout">Timeout for connect operation of a single lock.</param>
        /// <returns>Empty collection.</returns>
        public async Task<IEnumerable<LockInfoTdo>> GetLocksStateAsync(IEnumerable<LockInfoAuthTdo> locksInfo, TimeSpan connectTimeout) => await Task.FromResult(LocksInfo);


        /// <summary> No changes required because lock state is unknown.</summary>
        public void UpdateSimulation(BikeCollection bikes)
        {
            var locksInfo = new List<LockInfoTdo>();

            // Add and process locks info object
            foreach (var bikeInfo in bikes.OfType<BikeInfo>())
            {
                locksInfo.Add(new LockInfoTdo.Builder { Id = bikeInfo.LockInfo.Id, State = null }.Build());
            }

            LocksInfo = locksInfo;
        }

        /// <summary>Gets a lock by bike Id.</summary>
        /// <param name="bikeId"></param>
        /// <returns>Lock object</returns>
        public ILockService this[int bikeId]
        {
            get
            {
                return null;
            }
        }

        /// <summary> Disconnects lock.</summary>
        /// <param name="bikeId"> Id of lock to disconnect.</param>
        /// <param name="bikeGuid"> Guid of lock to disconnect.</param>
        public async Task<LockingState> DisconnectAsync(int bikeId, Guid bikeGuid) => await Task.FromResult(LockingState.UnknownDisconnected);
    }
}