using UnityEngine;
using System;

public class PlayerInput : MonoBehaviour
{
    public static PlayerInput Instance { get; private set; }

    // Continuous axes
    public float MouseX { get; private set; }
    public float MouseY { get; private set; }
    public float Horizontal { get; private set; }
    public float Vertical { get; private set; }

    // Continuous states
    public bool Crouch { get; private set; }
    public bool Run { get; private set; }

    // Events for discrete actions
    public event Action OnToggleInventory;
    public event Action OnDropPressed;
    public event Action OnPickupPressed;
    public event Action OnJumpPressed;
    public event Action<int> OnHotbarSelect;

    public bool Enabled { get; set; } = true;

    void Awake()
    {
        if (Instance == null)
        {
            Instance = this;
            DontDestroyOnLoad(gameObject);
        }
        else
        {
            Destroy(gameObject);
        }
    }

    void Update()
    {
        // Always allow toggle inventory (Tab/Escape) even when input is disabled
        if (Input.GetKeyDown(KeyCode.Tab) || Input.GetKeyDown(KeyCode.Escape))
            OnToggleInventory?.Invoke();

        if (!Enabled) return;

        // Axes
        MouseX = Input.GetAxis("Mouse X");
        MouseY = Input.GetAxis("Mouse Y");
        Horizontal = Input.GetAxisRaw("Horizontal");
        Vertical = Input.GetAxisRaw("Vertical");

        // Continuous keys
        Crouch = Input.GetKey(KeyCode.C);
        Run = Input.GetKey(KeyCode.LeftShift);

        // Discrete actions
        if (Input.GetButtonDown("Jump"))
            OnJumpPressed?.Invoke();

        if (Input.GetKeyDown(KeyCode.Tab))
            OnToggleInventory?.Invoke();

        if (Input.GetKeyDown(KeyCode.Q))
            OnDropPressed?.Invoke();

        if (Input.GetKeyDown(KeyCode.E))
            OnPickupPressed?.Invoke();

        for (int i = 0; i < 9; i++)
        {
            if (Input.GetKeyDown(KeyCode.Alpha1 + i))
            {
                OnHotbarSelect?.Invoke(i);
            }
        }
    }
}