using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;
using WindowsInput;
using SharpDX.XInput;

namespace PS4_Test
{
    class ps4controller
    {
        private const int MovementDivider = 2_000;
        private const int ScrollDivider = 10_000;
        private const int RefreshRate = 60;

        private Timer _timer;
        private Controller _controller;
        private IMouseSimulator _mouseSimulator;

        private bool _wasADown;
        private bool _wasBDown;

        public ps4controller()
        {
            _controller = new Controller(UserIndex.One);
            _mouseSimulator = new InputSimulator().Mouse;
            _timer = new Timer(obj => Update());
        }

        public void Start()
        {
            _timer.Change(0, 1000 / RefreshRate);
        }

        private void Update()
        {
            _controller.GetState(out var state);
            Movement(state);
            Scroll(state);
            LeftButton(state);
            RightButton(state);
        }

        private void RightButton(State state)
        {
            var isBDown = state.Gamepad.Buttons.HasFlag(GamepadButtonFlags.B);
            if (isBDown && !_wasBDown) _mouseSimulator.RightButtonDown();
            if (!isBDown && _wasBDown) _mouseSimulator.RightButtonUp();
            _wasBDown = isBDown;
        }

        private void LeftButton(State state)
        {
            var isADown = state.Gamepad.Buttons.HasFlag(GamepadButtonFlags.A);
            if (isADown && !_wasADown) _mouseSimulator.LeftButtonDown();
            if (!isADown && _wasADown) _mouseSimulator.LeftButtonUp();
            _wasADown = isADown;
        }

        private void Scroll(State state)
        {
            var x = state.Gamepad.RightThumbX / ScrollDivider;
            var y = state.Gamepad.RightThumbY / ScrollDivider;
            _mouseSimulator.HorizontalScroll(x);
            _mouseSimulator.VerticalScroll(y);
        }

        private void Movement(State state)
        {
            var x = state.Gamepad.LeftThumbX / MovementDivider;
            var y = state.Gamepad.LeftThumbY / MovementDivider;
            _mouseSimulator.MoveMouseBy(x, -y);
        }
    }
}