using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using ShareeBike.Model.Bikes;
using ShareeBike.Model.Bikes.BikeInfoNS.BluetoothLock;
using ShareeBike.Services.BluetoothLock.Tdo;

namespace ShareeBike.Services.BluetoothLock
{
	/// <summary>
	/// Fake 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 attempts 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 centered 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);
	}
}