using System;
using UnitTestSharp;

namespace Clave.UnitTests
{
    public class KeyCodesTests : TestFixture
    {
        public class IsKeyboardTests : TestFixture
        {
            public void FirstAndLastKeyboardKeys_AreKeyboard()
            {
                CheckTrue(KeyCodes.IsKeyboard(KeyCode.A));
                CheckTrue(KeyCodes.IsKeyboard(KeyCode.NumpadEnter));
            }

            public void None_IsNot()
            {
                CheckFalse(KeyCodes.IsKeyboard(KeyCode.None));
            }

            public void MouseAndGamepad_AreNot()
            {
                CheckFalse(KeyCodes.IsKeyboard(KeyCode.MouseLeft));
                CheckFalse(KeyCodes.IsKeyboard(KeyCode.GamepadDPadRight));
            }
        }

        public class IsMouseTests : TestFixture
        {
            public void ButtonsAndWheel_AreMouse()
            {
                CheckTrue(KeyCodes.IsMouse(KeyCode.MouseLeft));
                CheckTrue(KeyCodes.IsMouse(KeyCode.MouseForward));
                CheckTrue(KeyCodes.IsMouse(KeyCode.WheelUp));
                CheckTrue(KeyCodes.IsMouse(KeyCode.WheelDown));
            }

            public void NeighboursOfTheBlock_AreNot()
            {
                CheckFalse(KeyCodes.IsMouse(KeyCode.NumpadEnter));
                CheckFalse(KeyCodes.IsMouse(KeyCode.GamepadA));
            }
        }

        public class IsGamepadTests : TestFixture
        {
            public void FirstAndLastButtons_AreGamepad()
            {
                CheckTrue(KeyCodes.IsGamepad(KeyCode.GamepadA));
                CheckTrue(KeyCodes.IsGamepad(KeyCode.GamepadDPadRight));
            }

            public void NeighboursOfTheBlock_AreNot()
            {
                CheckFalse(KeyCodes.IsGamepad(KeyCode.WheelDown));
                CheckFalse(KeyCodes.IsGamepad(KeyCode.None));
            }
        }

        public class EveryKeyTests : TestFixture
        {
            public void BelongsToExactlyOneDevice()
            {
                foreach (KeyCode key in Enum.GetValues(typeof(KeyCode)))
                {
                    if (key == KeyCode.None)
                    {
                        continue;
                    }

                    int devices = (KeyCodes.IsKeyboard(key) ? 1 : 0) + (KeyCodes.IsMouse(key) ? 1 : 0)
                        + (KeyCodes.IsGamepad(key) ? 1 : 0);

                    CheckEqual(1, devices);
                }
            }
        }
    }
}