using System;
using System.Collections.Generic;
using NUnit.Framework;
using TINK.Model.State;


namespace TestTINKLib
{

	[TestFixture]
	public class TestStateRequestedInfo
	{
		[Test]
		public void TestConstruct_FromApp()
		{
			Assert.AreEqual(
				InUseStateEnum.Reserved,
				new StateRequestedInfo(() => new DateTime(2017, 09, 20, 12, 1, 0), new DateTime(2017, 09, 20, 12, 0, 0), "a@b", null).Value);

			Assert.AreEqual(
				"a@b",
				new StateRequestedInfo(() => new DateTime(2017, 09, 20, 12, 1, 0), new DateTime(2017, 09, 20, 12, 0, 0), "a@b", null).MailAddress);

			Assert.IsNull(
				new StateRequestedInfo(() => new DateTime(2017, 09, 20, 12, 1, 0), new DateTime(2017, 09, 20, 12, 0, 0), "a@b", null).Code);

			Assert.AreEqual(
				new DateTime(2017, 09, 20, 12, 0, 0),
				new StateRequestedInfo(() => new DateTime(2017, 09, 20, 12, 1, 0), new DateTime(2017, 09, 20, 12, 0, 0), "a@b", null).From);

			Assert.IsTrue(
				new StateRequestedInfo(() => new DateTime(2017, 09, 20, 12, 1, 0), new DateTime(2017, 09, 20, 12, 0, 0), "a@b", null).GetIsStillReserved(out TimeSpan? remainingTime));

			Assert.AreEqual(
				14,
				remainingTime.Value.Minutes);
		}

		[Test]
		public void TestConstruct_FromWebserver()
		{
			Assert.AreEqual(
				InUseStateEnum.Reserved,
				new StateRequestedInfo(() => new DateTime(2017, 09, 20), new DateTime(2017, 09, 19), "a@b", "372").Value);

			Assert.AreEqual(
				"a@b",
				new StateRequestedInfo(() => new DateTime(2017, 09, 20), new DateTime(2017, 09, 19), "a@b", "372").MailAddress);

			Assert.AreEqual(
				"372",
				new StateRequestedInfo(() => new DateTime(2017, 09, 20), new DateTime(2017, 09, 19), "a@b", "372").Code);

			Assert.AreEqual(
				new DateTime(2017, 09, 19),
				new StateRequestedInfo(() => new DateTime(2017, 09, 20), new DateTime(2017, 09, 19), "a@b", "372").From);

			Assert.IsTrue(
				new StateRequestedInfo(() => new DateTime(2017, 09, 20, 12, 12, 0), new DateTime(2017, 09, 20, 12, 0, 0), "a@b", "372").GetIsStillReserved(out TimeSpan? remainingTime));

			Assert.AreEqual(
				3,
				remainingTime.Value.Minutes);
		}

		[Test]
		public void TestTryUpdateOnTimeElapsed()
		{
			var l_oReservedAt = new DateTime(2017, 09, 20, 22, 01, 00);
			var l_oDateTimeMock = new DateTimeMocker(new List<DateTime> {
				l_oReservedAt.Add(new TimeSpan(0, 4, 0)),    // Reserved for 4 mns
                l_oReservedAt.Add(new TimeSpan(0, 16, 0))   // Time elapsed since booking 16 mns
                });

			var l_oReservedInfo = new StateRequestedInfo(l_oDateTimeMock.GetDateTime, l_oReservedAt, "a@b", null);
			Assert.AreEqual("a@b", l_oReservedInfo.MailAddress);
			Assert.AreEqual(new DateTime(2017, 09, 20, 22, 01, 00), l_oReservedInfo.From, "a@b");

			// Invoke first update (after simulated 4mns)
			Assert.IsTrue(l_oReservedInfo.GetIsStillReserved(out TimeSpan? remainingTime));
			Assert.AreEqual(11, remainingTime.Value.Minutes);
			Assert.AreEqual(new DateTime(2017, 09, 20, 22, 01, 00), l_oReservedInfo.From, "a@b");

			// Invoke second update (after simulated 16 mns)
			Assert.IsFalse(l_oReservedInfo.GetIsStillReserved(out remainingTime));
			Assert.IsNull(remainingTime);
			Assert.AreEqual(new DateTime(2017, 09, 20, 22, 01, 00), l_oReservedInfo.From, "a@b");
		}
	}
}