using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using TMPro;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

/// <summary>
/// 给每个按钮都绑定一个映射按键，模拟真实输入
/// </summary>
public class MyKeyBend : MonoBehaviour
{
    public KeyType keyType;           // 按键类型
    public bool enableHold = false;   // 是否长按
    public float holdInterval = 0.1f; // 长按间隔

    private bool isHolding = false;

    // 引入系统 keybd_event
    [DllImport("user32.dll", EntryPoint = "keybd_event")]
    public static extern void Keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);

    private const int KEYEVENTF_KEYDOWN = 0;
    private const int KEYEVENTF_KEYUP = 2;

   

    private void Start()
    {
        enableHold = true;
    }

    void OnMouseDown()
    {
        
    }

    public void OnKeyPress()
    {
        Debug.Log("KeyPress00"+ enableHold);
        if (enableHold)
        {
            isHolding = true;
            Debug.Log("KeyPress33");
            StartCoroutine(HoldRoutine());
        }
    }

    //void OnMouseUp()
    //{
    //    isHolding = false;
    //}

    private IEnumerator HoldRoutine()
    {
        Debug.Log("KeyPress11");
        while (isHolding)
        {
            yield return new WaitForSeconds(holdInterval);
            PressKey();
        }
    }

    private void PressKey()
    {
        // 保证焦点在当前选中对象
        //GameObject selected = EventSystem.current.currentSelectedGameObject;

        //if (selected != null)
        //{
        //    TMP_InputField tmp = selected.GetComponent<TMP_InputField>();
        //    InputField input = selected.GetComponent<InputField>();

        //    if (tmp != null || input != null)
        //    {
        //        EventSystem.current.SetSelectedGameObject(selected);
        //        if (tmp != null) tmp.ActivateInputField();
        //        if (input != null) input.ActivateInputField();
        //    }
        //}

        Debug.Log("KeyPress");
        // 发送系统按键事件
        byte vk = KeyTypeToVK(keyType);
        if (vk == 0) return;

        Keybd_event(vk, 0, KEYEVENTF_KEYDOWN, 0);
        Keybd_event(vk, 0, KEYEVENTF_KEYUP, 0);

        isHolding = false;
    }

    private byte KeyTypeToVK(KeyType type)
    {
        switch (type)
        {
            // 字母
            case KeyType.A: return 65;
            case KeyType.B: return 66;
            case KeyType.C: return 67;
            case KeyType.D: return 68;
            case KeyType.E: return 69;
            case KeyType.F: return 70;
            case KeyType.G: return 71;
            case KeyType.H: return 72;
            case KeyType.I: return 73;
            case KeyType.J: return 74;
            case KeyType.K: return 75;
            case KeyType.L: return 76;
            case KeyType.M: return 77;
            case KeyType.N: return 78;
            case KeyType.O: return 79;
            case KeyType.P: return 80;
            case KeyType.Q: return 81;
            case KeyType.R: return 82;
            case KeyType.S: return 83;
            case KeyType.T: return 84;
            case KeyType.U: return 85;
            case KeyType.V: return 86;
            case KeyType.W: return 87;
            case KeyType.X: return 88;
            case KeyType.Y: return 89;
            case KeyType.Z: return 90;

            // 数字
            case KeyType.Digit0: return 48;
            case KeyType.Digit1: return 49;
            case KeyType.Digit2: return 50;
            case KeyType.Digit3: return 51;
            case KeyType.Digit4: return 52;
            case KeyType.Digit5: return 53;
            case KeyType.Digit6: return 54;
            case KeyType.Digit7: return 55;
            case KeyType.Digit8: return 56;
            case KeyType.Digit9: return 57;

            // 小键盘数字
            //case KeyType.Numpad0: return 96;
            //case KeyType.Numpad1: return 97;
            //case KeyType.Numpad2: return 98;
            //case KeyType.Numpad3: return 99;
            //case KeyType.Numpad4: return 100;
            //case KeyType.Numpad5: return 101;
            //case KeyType.Numpad6: return 102;
            //case KeyType.Numpad7: return 103;
            //case KeyType.Numpad8: return 104;
            //case KeyType.Numpad9: return 105;
            //case KeyType.NumpadMultiply: return 106;
            //case KeyType.NumpadPlus: return 107;
            //case KeyType.NumpadEnter: return 108;
            //case KeyType.NumpadMinus: return 109;
            case KeyType.NumpadDot: return 110;
            //case KeyType.NumpadDivide: return 111;

            // 功能键
            case KeyType.F1: return 112;
            case KeyType.F2: return 113;
            case KeyType.F3: return 114;
            case KeyType.F4: return 115;
            case KeyType.F5: return 116;
            case KeyType.F6: return 117;
            case KeyType.F7: return 118;
            case KeyType.F8: return 119;
            case KeyType.F9: return 120;
            case KeyType.F10: return 121;
            //case KeyType.F11: return 122;
            //case KeyType.F12: return 123;

            // 其他常用键
            case KeyType.Backspace: return 8;
            //case KeyType.Tab: return 9;
            //case KeyType.Clear: return 12;
            case KeyType.Enter: return 13;
            //case KeyType.Shift: return 16;
            //case KeyType.Control: return 17;
            //case KeyType.Alt: return 18;
            //case KeyType.CapsLock: return 20;
            //case KeyType.Esc: return 27;
            case KeyType.Space: return 32;
            //case KeyType.PageUp: return 33;
            //case KeyType.PageDown: return 34;
            //case KeyType.End: return 35;
            //case KeyType.Home: return 36;
            case KeyType.ArrowLeft: return 37;
            case KeyType.ArrowUp: return 38;
            case KeyType.ArrowRight: return 39;
            case KeyType.ArrowDown: return 40;
            //case KeyType.Insert: return 45;
            //case KeyType.Delete: return 46;
            //case KeyType.Help: return 47;
            //case KeyType.NumLock: return 144;

            default: return 0;
        }
    }
}