using System;
using GTA;
using GTA.Native;
using GTA.Math;

public class AutoHandbrake : Script
{
    // Indicates whether the handbrake is active
    private bool _handbrakeActive = false;

    // Controls the cooldown time between key presses to prevent multiple activations
    private bool _keyPressCooldown = false;

    // List of allowed vehicle classes for using the automatic handbrake
    private readonly string[] ALLOWED_VEHICLE_CLASSES = {
        "Compacts", "Sedans", "SUVs", "Coupes", "Muscle",
        "Sports", "Super", "Motorcycles", "OffRoad", "Industrial",
        "Utility", "Vans", "Commercial", "Emergency", "Military",
        "OpenWheel", "Service", "SportsClassics"
    };

    // Constructor: subscribes the OnTick method to the Tick event
    public AutoHandbrake()
    {
        Tick += OnTick;
    }

    // Method executed on every game tick
    private void OnTick(object sender, EventArgs e)
    {
        // Gets the player's character
        Ped player = Game.Player.Character;

        // If the player is not in a vehicle and the handbrake is active, deactivate it
        if (!player.IsInVehicle() && _handbrakeActive)
        {
            _handbrakeActive = false;
            return;
        }

        // Handles toggling the handbrake on or off
        HandleHandbrakeToggle(player);

        // Applies the current handbrake state to the vehicle
        ApplyHandbrakeState(player);
    }

    // Handles the logic for toggling the handbrake
    private void HandleHandbrakeToggle(Ped player)
    {
        // Checks if the 'N' key is pressed, there is no cooldown, and the player is in a vehicle
        if (Game.IsKeyPressed(System.Windows.Forms.Keys.N) && !_keyPressCooldown && player.IsInVehicle())
        {
            Vehicle vehicle = player.CurrentVehicle;

            // If the vehicle is valid and nearly stopped, toggle the handbrake state
            if (vehicle != null && IsValidVehicle(vehicle) && vehicle.Speed < 0.1f)
            {
                _handbrakeActive = !_handbrakeActive;
            }

            // Activates the cooldown to prevent rapid multiple activations
            _keyPressCooldown = true;
            Wait(500); // Waits for 500 ms
            _keyPressCooldown = false;
        }
    }

    // Applies the handbrake state to the current vehicle
    private void ApplyHandbrakeState(Ped player)
    {
        // If the player is not in a vehicle, do nothing
        if (!player.IsInVehicle()) return;

        Vehicle vehicle = player.CurrentVehicle;

        // If the vehicle is null or the player is not the driver, do nothing
        if (vehicle == null || vehicle.Driver != player) return;

        if (_handbrakeActive)
        {
            // Stops the vehicle and activates the handbrake
            vehicle.Velocity = Vector3.Zero;
            Function.Call(Hash.SET_VEHICLE_ENGINE_ON, vehicle, true, true, false);
            Function.Call(Hash.SET_VEHICLE_HANDBRAKE, vehicle, true);
        }
        else
        {
            // Deactivates the handbrake
            Function.Call(Hash.SET_VEHICLE_HANDBRAKE, vehicle, false);
        }
    }

    // Checks if the vehicle belongs to an allowed class
    private bool IsValidVehicle(Vehicle vehicle)
    {
        // Gets the vehicle's class and checks if it is in the list of allowed classes
        string vehicleClass = Enum.GetName(typeof(VehicleClass), vehicle.ClassType);
        return Array.Exists(ALLOWED_VEHICLE_CLASSES, allowedClass => allowedClass == vehicleClass);
    }
}