using System;
using System.Threading.Tasks;
using NSubstitute;
using NUnit.Framework;
using ShareeBike.Model.Bikes.BikeInfoNS.BluetoothLock;
using ShareeBike.Model.Connector;
using static ShareeBike.Model.Bikes.BikeInfoNS.BikeNS.Command.StartRentalCommand;
using ShareeBike.Repository.Exception;

namespace SharedBusinessLogic.Tests.Model.Bikes.BikeInfoNS.BikeNS.Command
{
	[TestFixture]
	public class TestStartRentalCommand
	{
		/// <summary>
		/// Use case: Start rental.
		/// Final state: Rental started successfully
		/// </summary>
		[Test]
		public async Task TestLockClosedStartRental()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var listener = Substitute.For<IStartRentalCommandListener>();

			bike.LockInfo.State.Returns(LockingState.Closed);

			await InvokeAsync<TestStartRentalCommand>(
				bike,
				() => true, // isConnectedDelegate
				(isConnected) => connector,
				listener);

			await connector.Command.DoBookAsync(Arg.Any<IBikeInfoMutable>(), LockingAction.Open);

			// Verify behavior
			Received.InOrder(async () =>
			{
				listener.ReportStep(Step.RentBike);
				await connector.Command.DoBookAsync(bike, LockingAction.Open);
			});
		}

		/// <summary>
		/// Use case: Start rental.
		/// Final state: Still reserved.
		/// </summary>
		[Test]
		public void TestLockClosedStartRentalNoWebException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var listener = Substitute.For<IStartRentalCommandListener>();

			bike.LockInfo.State.Returns(LockingState.Closed);

			connector.Command.DoBookAsync(Arg.Any<IBikeInfoMutable>(), LockingAction.Open).Returns(x
				=> throw new WebConnectFailureException("Context info.", new System.Exception("hoppla")));

			Assert.That(
				async () => await InvokeAsync<TestStartRentalCommand>(
					bike,
					() => false, // isConnectedDelegate
					(isConnected) => connector,
					listener),
				Throws.InstanceOf<WebConnectFailureException>());

			// Verify behavior
			Received.InOrder(async () =>
			{
				listener.ReportStep(Step.RentBike);
				await connector.Command.DoBookAsync(bike, LockingAction.Open);
				await listener.ReportStateAsync(State.WebConnectFailed, "Context info.");
			});
		}

		/// <summary>
		/// Use case: Start rental.
		/// Final state: Still reserved.
		/// </summary>
		[Test]
		public void TestLockClosedStartRentalGeneralException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var listener = Substitute.For<IStartRentalCommandListener>();

			bike.LockInfo.State.Returns(LockingState.Closed);

			connector.Command.DoBookAsync(Arg.Any<IBikeInfoMutable>(), LockingAction.Open).Returns(x
				=> throw new Exception("Context info."));

			Assert.That(
				async () => await InvokeAsync<TestStartRentalCommand>(
					bike,
					() => true, // isConnectedDelegate
					(isConnected) => connector,
					listener),
				Throws.InstanceOf<Exception>());

			// Verify behavior
			Received.InOrder(async () =>
			{
				listener.ReportStep(Step.RentBike);
				await connector.Command.DoBookAsync(bike, LockingAction.Open);
				await listener.ReportStateAsync(State.GeneralStartRentalError, "Context info.");
			});
		}

		/// <summary>
		/// Use case: Start rental.
		/// Final state: Rental started successfully
		/// </summary>
		[Test]
		public async Task TestLockOpenStartRental()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var listener = Substitute.For<IStartRentalCommandListener>();

			bike.LockInfo.State.Returns(LockingState.Open);

			await InvokeAsync<TestStartRentalCommand>(
				bike,
				() => true, // isConnectedDelegate
				(isConnected) => connector,
				listener);

			await connector.Command.DoBookAsync(Arg.Any<IBikeInfoMutable>());

			// Verify behavior
			Received.InOrder(async () =>
			{
				listener.ReportStep(Step.RentBike);
				await connector.Command.DoBookAsync(bike);
			});
		}

		/// <summary>
		/// Use case: Start rental.
		/// Final state: Still reserved.
		/// </summary>
		[Test]
		public void TestLockOpenStartRentalNoWebException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var listener = Substitute.For<IStartRentalCommandListener>();

			bike.LockInfo.State.Returns(LockingState.Open);

			connector.Command.DoBookAsync(Arg.Any<IBikeInfoMutable>()).Returns(x
				=> throw new WebConnectFailureException("Context info.", new System.Exception("hoppla")));

			Assert.That(
				async () => await InvokeAsync<TestStartRentalCommand>(
					bike,
					() => false, // isConnectedDelegate
					(isConnected) => connector,
					listener),
				Throws.InstanceOf<WebConnectFailureException>());

			// Verify behavior
			Received.InOrder(async () =>
			{
				listener.ReportStep(Step.RentBike);
				await connector.Command.DoBookAsync(bike);
				await listener.ReportStateAsync(State.WebConnectFailed, "Context info.");
			});
		}

		/// <summary>
		/// Use case: Start rental.
		/// Final state: Still reserved.
		/// </summary>
		[Test]
		public void TestLockOpenStartRentalGeneralException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var listener = Substitute.For<IStartRentalCommandListener>();

			bike.LockInfo.State.Returns(LockingState.Open);

			connector.Command.DoBookAsync(Arg.Any<IBikeInfoMutable>()).Returns(x
				=> throw new Exception("Context info."));

			Assert.That(
				async () => await InvokeAsync<TestStartRentalCommand>(
					bike,
					() => true, // isConnectedDelegate
					(isConnected) => connector,
					listener),
				Throws.InstanceOf<Exception>());

			// Verify behavior
			Received.InOrder(async () =>
			{
				listener.ReportStep(Step.RentBike);
				await connector.Command.DoBookAsync(bike);
				await listener.ReportStateAsync(State.GeneralStartRentalError, "Context info.");
			});
		}
	}
}