using System;
using System.Collections.Generic;
using UnityEngine;

public class In : MonoBehaviour
{
    [Header("Выбор источника управления")]

    static InputSource source;

    public void Initialize()
    {
#if UNITY_EDITOR
        source = new KeyboardInput();
#else
        source = new COMinput();
#endif

        var success = source.Initialize();
        if (!success) Debug.LogWarning("Не удалось проинициалзировать источник управления.");
    }

    public static int GetAxis(Axis axis, JoystickSide side, InteractMode interactMode = InteractMode.Discrete)
    {
        if (axis == Axis.Horizontal) return GetHorizontalAxis(side, interactMode);
        else if (axis == Axis.Vertical) return GetVerticalAxis(side, interactMode);
        else return 0;
    }

    private static int GetHorizontalAxis(JoystickSide side, InteractMode interactMode)
    {
        Func<InSignal, bool> func = interactMode == InteractMode.Discrete ? GetButtonDown : GetButton;

        int dir = 0;

        if (side == JoystickSide.Both)
        {
            if (func(InSignal.left1) || func(InSignal.left2)) dir -= 1;
            if (func(InSignal.right1) || func(InSignal.right2)) dir += 1;
            return dir;
        }
        else
        {
            InSignal left = side switch
            {
                JoystickSide.Left => InSignal.left1,
                JoystickSide.Right => InSignal.left2,
            };

            InSignal right = side switch
            {
                JoystickSide.Left => InSignal.right1,
                JoystickSide.Right => InSignal.right2,
            };

            if (func(left)) dir -= 1;
            if (func(right)) dir += 1;

            return dir;
        }
    }

    private static int GetVerticalAxis(JoystickSide side, InteractMode interactMode)
    {
        Func<InSignal, bool> func = interactMode == InteractMode.Discrete ? GetButtonDown : GetButton;
        int dir = 0;

        if (side == JoystickSide.Both)
        {
            if (func(InSignal.down1) || func(InSignal.down2)) dir -= 1;
            if (func(InSignal.up1) || func(InSignal.up2)) dir += 1;
            return dir;
        }
        else
        {
            InSignal downSignal = side switch
            {
                JoystickSide.Left => InSignal.down1,
                JoystickSide.Right => InSignal.down2,
            };

            InSignal upSignal = side switch
            {
                JoystickSide.Left => InSignal.up1,
                JoystickSide.Right => InSignal.up2,
            };

            if (func(downSignal)) dir -= 1;
            if (func(upSignal)) dir += 1;

            return dir;
        }
    }



    public static bool GetButton(InSignal button) => source.GetButton(button);

    public static bool GetButtonDown(InSignal button) => source.GetButtonDown(button);

    public static bool GetButtonDown(IEnumerable<InSignal> signals)
    {
        foreach (var signal in signals)
            if (GetButtonDown(signal))
                return true;

        return false;
    }

    public static bool GetButtonUp(InSignal button) => source.GetButtonUp(button);

    public static bool GetButton(int pinindex) => source.GetButton(pinindex);

    public static bool GetButtonDown(int pinindex) => source.GetButtonDown(pinindex);

    public static bool GetButtonUp(int pinindex) => source.GetButtonUp(pinindex);

    public static bool GetButtonAnyPlayer(PlayerAction button) => source.GetButtonAnyPlayer(button);

    public static bool GetButtonDownAnyPlayer(PlayerAction button) => source.GetButtonDownAnyPlayer(button);

    public static bool GetButtonUpAnyPlayer(PlayerAction button) => source.GetButtonUpAnyPlayer(button);

    public static bool GetButtonCurrentPlayer(PlayerAction button) => source.GetButtonCurrentPlayer(button);

    public static bool GetButtonDownCurrentPlayer(PlayerAction button) => source.GetButtonDownCurrentPlayer(button);

    public static bool GetButtonUpCurrentPlayer(PlayerAction button) => source.GetButtonUpCurrentPlayer(button);

    public static bool AnyButton() => source.AnyButton();
}

public enum Axis
{
    Horizontal,
    Vertical
}

public enum JoystickSide
{
    Left,
    Right,
    Both
}

public enum InteractMode
{
    Discrete,
    Continious
}