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.AuthCommand;
using ShareeBike.Repository.Exception;

namespace SharedBusinessLogic.Tests.Model.Bikes.BikeInfoNS.BikeNS.Command
{
	[TestFixture]
	public class TestAuthCommand
	{
		/// <summary>
		/// Use case: Authenticate.
		/// Final state: Authentication successfully
		/// </summary>
		[Test]
		public async Task TestAuth()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var listener = Substitute.For<IAuthCommandListener>();

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

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

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

		/// <summary>
		/// Use case: Authenticate.
		/// Final state: Authentication failed
		/// </summary>
		[Test]
		public void TestAuthNoWebException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var listener = Substitute.For<IAuthCommandListener>();

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

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

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

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

		/// <summary>
		/// Use case: Authenticate.
		/// Final state: Authentication failed
		/// </summary>
		[Test]
		public void TestAuthGeneralException()
		{
			var bike = Substitute.For<IBikeInfoMutable>();
			var connector = Substitute.For<IConnector>();
			var listener = Substitute.For<IAuthCommandListener>();

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

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

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

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