using Simuspaces.Simulation;

public class DirectionalLightSwitch : SimuScriptBase
{
    // Paste/slot the Directional Light reference here.
    public SVLight DirectionalLight;

    // Paste/slot the button or switch object here.
    public SceneObject Button;

    // Intensity used when the light is switched on.
    public float OnIntensity = 1f;

    // Interaction settings.
    public bool HighlightButton = true;
    public float InteractDistance = 10f;

    // Default state is off.
    private bool isOn = false;

    public override void Start()
    {
        base.Start();

        RegisterButton(null);

        // Force the starting state to off.
        ApplyLightState(null);
    }

    public override void OnUserJoin(SVUserInfo user)
    {
        string username = user != null ? user.Username : null;

        // Make the button available to the joining user.
        RegisterButton(username);

        // Give the joining user the current light state.
        ApplyLightState(username);
    }

    private void RegisterButton(string targetUsername)
    {
        if (Button == null || Button.IsNull)
        {
            Log("[Light Switch] Slot a SceneObject into Button.");
            return;
        }

        MakeInteractable(
            Button,
            OnButtonClicked,
            HighlightButton,
            targetUsername,
            true,
            InteractDistance,
            "Toggle light"
        );
    }

    private void OnButtonClicked(SVInteractionInfo info)
    {
        if (DirectionalLight == null || DirectionalLight.IsNull)
        {
            Log("[Light Switch] Slot a Directional Light into DirectionalLight.");
            return;
        }

        isOn = !isOn;

        // No username means the change is sent to everyone.
        ApplyLightState(null);

        Log("[Light Switch] Light is now " + (isOn ? "ON" : "OFF"));
    }

    private void ApplyLightState(string targetUsername)
    {
        if (DirectionalLight == null || DirectionalLight.IsNull)
            return;

        float intensity = isOn ? Mathf.Max(0f, OnIntensity) : 0f;

        // Keep the Light component enabled and use intensity as the switch.
        SetLightEnabled(DirectionalLight, true, targetUsername);
        SetLightIntensity(DirectionalLight, intensity, targetUsername);
    }
}