using System;
using System.Threading;
using System.Threading.Tasks;
using NSubstitute;
using NSubstitute.ExceptionExtensions;
using NUnit.Framework;
using TINK.Model.Bikes.BikeInfoNS.BluetoothLock;
using TINK.Model.Bikes.BikeInfoNS.BluetoothLock.Command;
using TINK.Model.Connector;
using TINK.Model.Device;
using TINK.Model.State;
using TINK.Model.User;
using TINK.Services.BluetoothLock;
using TINK.Services.Geolocation;
using static TINK.Model.Bikes.BikeInfoNS.BluetoothLock.Command.GetLockedLocationCommand;

namespace TestShareeLib.Model.Bikes.BikeInfoNS.BluetoothLock.Command
{
	public class TestGetBikeLocationCommand
	{
		/// <summary>
		/// Use case: End rental.
		/// Final state: Booked, lock state unknown.
		/// </summary>
		/// <remarks> Replaces test TestReturnOutOfReach which was removed for sharee.bike version ~3.0.362. </remarks>
		[Test]
		public void TestReturnLastGeolocatonNullLockOutOfReach()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var listener = Substitute.For<IGetLockedLocationCommandListener>();

			bike.Id.Returns("0");

			bike.LockInfo.Location.Returns((IGeolocation)null); // When locking bike geolocation was not available.

			locks[0].GetDeviceState().Returns(DeviceState.Disconnected); // Simulate bike out of reach.

			locks.DisconnectAsync(0, Arg.Any<Guid>()).Returns(LockingState.UnknownDisconnected); // Simulate disconnecting.

			bike.State.Value.Returns(InUseStateEnum.Booked);

			Assert.That(
				async () => await InvokeAsync<TestGetBikeLocationCommand>(
					bike,
					geolocation,
					locks,
					listener: listener),
				Throws.TypeOf<Exception>());

			// Verify behavior
			Received.InOrder(() =>
			{
				listener.ReportStep(Step.StartingQueryLocation);
				var location = bike.LockInfo.Location;
				locks[0].GetDeviceState();
				listener.ReportStateAsync(State.DisconnetedNoLocationError, "");
				listener.ReportStep(Step.DisconnectingLockOnDisconnectedNoLocationError);
				locks.DisconnectAsync(0, Arg.Any<Guid>());
				listener.ReportStateAsync(State.QueryLocationSucceeded, "");
			});

			Assert.That(
				bike.LockInfo.State,
				Is.EqualTo(LockingState.UnknownDisconnected));
		}

		/// <summary>
		/// Use case: End rental.
		/// Final state: Booked, lock state unknown.
		/// </summary>
		/// <remarks>Replaces test TestReturnLockInReachNoGeolocation which was removed for sharee.bike older ~ 3.0.362.</remarks>
		[Test]
		public void TestReturnStartGetGeolocationException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var listener = Substitute.For<IGetLockedLocationCommandListener>();

			bike.Id.Returns("0");

			bike.LockInfo.Location.Returns((IGeolocation)null); // When locking bike geolocation was not available.

			locks[0].GetDeviceState().Returns(DeviceState.Connected); // Simulate bike in reach.

			geolocation.GetAsync(Arg.Any<CancellationToken?>(), Arg.Any<DateTime?>()).Throws(new Exception("Ups...")); // Simulate error when starting query for geolocation.

			bike.State.Value.Returns(InUseStateEnum.Booked); // Booking state does not change.

			bike.LockInfo.State.Returns(LockingState.Closed);   // Locking state does not change.

			var subsequent = InvokeAsync<TestGetBikeLocationCommand>(
				bike,
				geolocation,
				locks,
				listener: listener);

			// Verify behavior
			Received.InOrder(async () =>
			{
				listener.ReportStep(Step.StartingQueryLocation);
				locks[0].GetDeviceState();
				await geolocation.GetAsync(Arg.Any<CancellationToken?>(), Arg.Any<DateTime?>());
				await listener.ReportStateAsync(State.QueryLocationFailed, "Ups...");
			});
		}

		/// <summary>
		/// Use case: End rental.
		/// Final state: Booked, lock state unknown.
		/// </summary>
		[Test]
		public void TestReturnGetGeolocationException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var listener = Substitute.For<IGetLockedLocationCommandListener>();

			bike.Id.Returns("0");

			bike.LockInfo.Location.Returns((IGeolocation)null); // When locking bike geolocation was not available.

			locks[0].GetDeviceState().Returns(DeviceState.Connected); // Simulate bike in reach.

			geolocation.GetAsync(Arg.Any<CancellationToken?>(), Arg.Any<DateTime?>())
				.Returns(Task.FromException<IGeolocation>(new Exception("Ups..."))); // Simulate error starting query for geolocation.

			bike.State.Value.Returns(InUseStateEnum.Booked); // Booking state does not change.

			bike.LockInfo.State.Returns(LockingState.Closed);   // Locking state does not change.

			Assert.That(
				async () => await InvokeAsync<TestGetBikeLocationCommand>(
					bike,
					geolocation,
					locks,
					listener: listener),
					Throws.TypeOf<Exception>());

			// Verify behavior
			Received.InOrder(async () =>
			{
				listener.ReportStep(Step.StartingQueryLocation);
				locks[0].GetDeviceState();
				await geolocation.GetAsync(Arg.Any<CancellationToken?>(), Arg.Any<DateTime?>());
				await listener.ReportStateAsync(State.QueryLocationFailed, "Ups...");
			});
		}



		/// <summary>
		/// Use case: End rental.
		/// Final state: Disposable closed
		/// </summary>
		[Test]
		public async Task TestReturnLockInReach()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var geolocation = Substitute.For<IGeolocationService>();
			var locks = Substitute.For<ILocksService>();
			var listener = Substitute.For<IGetLockedLocationCommandListener>();

			bike.LockInfo.Location.Returns((IGeolocation)null);

			bike.Id.Returns("0");

			locks[0].GetDeviceState().Returns(DeviceState.Connected); // Simulate bike in reach. If bike is out of reach bluetooth state changes to unknown.

			var location = Substitute.For<IGeolocation>();
			location.Latitude.Returns(7);
			location.Longitude.Returns(9);
			location.Timestamp.Returns(DateTimeOffset.MinValue);

			geolocation.GetAsync(Arg.Any<CancellationToken?>(), Arg.Any<DateTime>()).Returns(Task.FromResult(
				location
				)); ;

			var lockingLocation = await InvokeAsync<TestGetBikeLocationCommand>(
				bike,
				geolocation,
				locks,
				() => DateTime.MinValue,
				listener);

			Assert.That(lockingLocation.Latitude, Is.EqualTo(7));
			Assert.That(lockingLocation.Longitude, Is.EqualTo(9));

			// Verify behavior
			Received.InOrder(async () =>
			{
				listener.ReportStep(Step.StartingQueryLocation);
				var dummyLoc = bike.LockInfo.Location; // Check if location was available when closing lock.
				locks[0].GetDeviceState(); // Check if bike is connected.
				await geolocation.GetAsync(Arg.Any<CancellationToken?>(), Arg.Any<DateTime>()); // Query current location.
				await listener.ReportStateAsync(State.QueryLocationSucceeded, string.Empty);
			});
		}
	}
}