using UnityEngine;
using System;

public class InputManager : MonoBehaviour
{
    public static event Action<KeyCode> OnKeyPressed;
    public static event Action<KeyCode> OnKeyReleased;

    // 存储当前帧所有按下的按键
    private KeyCode[] pressedKeysThisFrame = new KeyCode[5];
    private int pressedKeyCount = 0;

    private void Update()
    {
        pressedKeyCount = 0;

        // 检查所有可能的按键
        foreach (string color in new string[] { "red", "green", "yellow", "purple", "blue" })
        {
            KeyCode key = KeyBindingManager.GetKeyForColor(color);
            if (key == KeyCode.None) continue;

            if (Input.GetKeyDown(key))
            {
                // 记录当前帧按下的所有按键
                pressedKeysThisFrame[pressedKeyCount++] = key;
                OnKeyPressed?.Invoke(key);
            }
            if (Input.GetKeyUp(key))
            {
                OnKeyReleased?.Invoke(key);
            }
        }

        // 处理多键同时按下
        if (pressedKeyCount > 1)
        {
            HandleMultiKeyPress();
        }
    }

    private void HandleMultiKeyPress()
    {
        // 对当前帧所有按下的按键进行处理
        for (int i = 0; i < pressedKeyCount; i++)
        {
            KeyCode key = pressedKeysThisFrame[i];
            // 调用 JudgeManager 统一判断对应按键的音符
            JudgeManager.Instance.JudgeEarliestNote(key);
        }
    }
}