using Blacklight.WebGL2;
using Clave;

namespace Blacklight.WebGL2.UnitTests
{
    public class AltGrWatcherTests : UnitTestSharp.TestFixture
    {
        public class NoteKeyDownTests : UnitTestSharp.TestFixture
        {
            public void ALeftControl_IsWhatAnAltGrIsToldBy()
            {
                var watcher = new AltGrWatcher();

                watcher.NoteKeyDown(KeyCode.ControlLeft, isRepeat: false, timeStamp: 100);

                Check(watcher.IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false, timeStamp: 100));
            }

            public void ARepeatingLeftControl_DoesNotMoveIt()
            {
                var watcher = new AltGrWatcher();
                watcher.NoteKeyDown(KeyCode.ControlLeft, isRepeat: false, timeStamp: 100);

                watcher.NoteKeyDown(KeyCode.ControlLeft, isRepeat: true, timeStamp: 400);

                CheckFalse(watcher.IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false, timeStamp: 400));
            }

            public void AnotherKey_IsNotNoted()
            {
                var watcher = new AltGrWatcher();

                watcher.NoteKeyDown(KeyCode.ControlRight, isRepeat: false, timeStamp: 100);
                watcher.NoteKeyDown(KeyCode.A, isRepeat: false, timeStamp: 100);

                CheckFalse(watcher.IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false, timeStamp: 100));
            }

            public void ALaterLeftControl_ReplacesTheEarlierOne()
            {
                var watcher = new AltGrWatcher();
                watcher.NoteKeyDown(KeyCode.ControlLeft, isRepeat: false, timeStamp: 100);

                watcher.NoteKeyDown(KeyCode.ControlLeft, isRepeat: false, timeStamp: 900);

                Check(watcher.IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false, timeStamp: 900));
                CheckFalse(watcher.IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false, timeStamp: 100));
            }
        }

        public class IsAltGrTests : UnitTestSharp.TestFixture
        {
            public static AltGrWatcher ControlDownAt(double timeStamp)
            {
                var returnMe = new AltGrWatcher();
                returnMe.NoteKeyDown(KeyCode.ControlLeft, isRepeat: false, timeStamp);
                return returnMe;
            }

            public void NoControlNoted_IsFalse()
            {
                var watcher = new AltGrWatcher();

                CheckFalse(watcher.IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false, timeStamp: 0));
            }

            public void StampedAtTheSameTime_IsTrue()
            {
                Check(ControlDownAt(250.5).IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false, timeStamp: 250.5));
            }

            public void StampedWithinTheTolerance_IsTrue()
            {
                AltGrWatcher watcher = ControlDownAt(100);

                Check(watcher.IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false,
                    timeStamp: 100 + AltGrWatcher.ToleranceMs));
            }

            public void StampedJustPastTheTolerance_IsFalse()
            {
                AltGrWatcher watcher = ControlDownAt(100);

                CheckFalse(watcher.IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false,
                    timeStamp: 100 + AltGrWatcher.ToleranceMs + 0.01));
            }

            public void StampedMuchLater_IsFalse()
            {
                CheckFalse(ControlDownAt(100).IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: false, timeStamp: 500));
            }

            public void AltRightThatIsOnlyAnAlt_IsFalse()
            {
                CheckFalse(ControlDownAt(100).IsAltGr(KeyCode.AltRight, "Alt", isRepeat: false, timeStamp: 100));
            }

            public void AnotherKeyNamedAltGraph_IsFalse()
            {
                CheckFalse(ControlDownAt(100).IsAltGr(KeyCode.AltLeft, "AltGraph", isRepeat: false, timeStamp: 100));
            }

            public void ARepeat_IsFalse()
            {
                CheckFalse(ControlDownAt(100).IsAltGr(KeyCode.AltRight, "AltGraph", isRepeat: true, timeStamp: 100));
            }
        }
    }
}