using UnityEngine;

[DisallowMultipleComponent]
public sealed class MapControlBinder : MonoBehaviour
{
    [SerializeField] private MapController mapController;
    [SerializeField] private NetworkPhysicalWheelInteractable horizontalWheel;
    [SerializeField] private NetworkPhysicalWheelInteractable verticalWheel;
    [SerializeField] private NetworkPhysicalLeverInteractable fireLever;
    [SerializeField] private NetworkButtonInteractable scanButton;

    private bool controlsBound;
    private bool initialValuesApplied;

    private void Reset() => mapController = GetComponent<MapController>();

    private void OnEnable() => TryBindControls();

    private void OnDisable() => UnbindControls();

    private void Update()
    {
        TryBindControls();

        if (!controlsBound || initialValuesApplied ||
            horizontalWheel == null || verticalWheel == null)
        {
            return;
        }

        initialValuesApplied = true;
        HandleHorizontalChanged(horizontalWheel.NormalizedValue);
        HandleVerticalChanged(verticalWheel.NormalizedValue);
    }

    private void TryBindControls()
    {
        if (controlsBound || !AreNetworkObjectsReady())
            return;

        if (horizontalWheel != null)
            horizontalWheel.ValueChanged += HandleHorizontalChanged;
        if (verticalWheel != null)
            verticalWheel.ValueChanged += HandleVerticalChanged;
        if (fireLever != null)
            fireLever.StateChanged += HandleFireChanged;
        if (scanButton != null)
            scanButton.Pressed += HandleScanPressed;

        controlsBound = true;
    }

    private void UnbindControls()
    {
        if (!controlsBound)
            return;

        if (horizontalWheel != null)
            horizontalWheel.ValueChanged -= HandleHorizontalChanged;
        if (verticalWheel != null)
            verticalWheel.ValueChanged -= HandleVerticalChanged;
        if (fireLever != null)
            fireLever.StateChanged -= HandleFireChanged;
        if (scanButton != null)
            scanButton.Pressed -= HandleScanPressed;

        controlsBound = false;
        initialValuesApplied = false;
    }

    private bool AreNetworkObjectsReady()
    {
        return mapController != null && mapController.IsSpawned &&
               (horizontalWheel == null || horizontalWheel.IsSpawned) &&
               (verticalWheel == null || verticalWheel.IsSpawned) &&
               (fireLever == null || fireLever.IsSpawned) &&
               (scanButton == null || scanButton.IsSpawned);
    }

    private void HandleHorizontalChanged(float value) =>
        ApplyOnServer(() => mapController.SetHorizontalNormalized(value));

    private void HandleVerticalChanged(float value) =>
        ApplyOnServer(() => mapController.SetVerticalNormalized(value));

    private void HandleFireChanged(bool active)
    {
        if (active)
            ApplyOnServer(mapController.RequestPseudoFire);
    }

    private void HandleScanPressed() => ApplyOnServer(mapController.RequestRadarScan);

    private void ApplyOnServer(System.Action action)
    {
        if (mapController != null && mapController.IsSpawned && mapController.IsServer)
            action?.Invoke();
    }
}