using UnityEngine;
using TMPro;
using System;

/// <summary>
/// MonoBehaviour wrapper for OpenVRNativeAccess that can be attached to GameObjects.
/// This script uses the static OpenVRNativeAccess class to interact with the native plugin
/// and displays the gyroscope data on a TextMeshProUGUI component.
/// </summary>
public class OpenVRNativeGyroscope : MonoBehaviour
{
    [Header("References")]
    [Tooltip("TextMeshProUGUI component to display the gyroscope data")]
    public TextMeshProUGUI gyroText;

    [Header("Settings")]
    [Tooltip("How often to update the display (in seconds)")]
    public float updateInterval = 0.05f;

    // Private variables
    private bool pluginInitialized = false;
    private float timeSinceLastUpdate = 0f;
    private Vector3 lastGyroData = Vector3.zero;
    private bool lastTrackingValid = false;

    void Start()
    {
        Debug.Log("OpenVRNativeGyroscope: Start called");

        if (gyroText == null)
        {
            Debug.LogError("TextMeshProUGUI reference not set");
            return;
        }

        // Initialize the native plugin
        try
        {
            pluginInitialized = OpenVRNativeAccess.InitializePlugin();
            if (pluginInitialized)
            {
                Debug.Log("Native plugin initialized successfully");
                Debug.Log($"Driver name: {OpenVRNativeAccess.GetDriverNameString()}");
            }
            else
            {
                Debug.LogError("Failed to initialize native plugin");
                gyroText.text = "Failed to initialize plugin";
            }
        }
        catch (Exception e)
        {
            Debug.LogError($"Error initializing native plugin: {e.Message}");
            gyroText.text = $"Plugin error: {e.Message}";
            pluginInitialized = false;
        }
    }

    void Update()
    {
        if (!pluginInitialized || gyroText == null)
            return;

        // Update at the specified interval
        timeSinceLastUpdate += Time.deltaTime;
        if (timeSinceLastUpdate < updateInterval)
            return;

        timeSinceLastUpdate = 0f;

        // Check if the headset is connected
        if (!OpenVRNativeAccess.IsHeadsetConnected())
        {
            gyroText.text = "Headset not connected";
            return;
        }

        // Get the raw gyroscope data
        float x, y, z;
        bool success = OpenVRNativeAccess.GetRawGyroscopeData(out x, out y, out z);

        if (success)
        {
            lastGyroData = new Vector3(x, y, z);
        }

        // Get tracking state
        bool trackingValid = OpenVRNativeAccess.IsTrackingValid();
        lastTrackingValid = trackingValid;

        // Format and display the gyroscope data
        gyroText.text = string.Format("Native Gyro:\nX: {0:F2}\nY: {1:F2}\nZ: {2:F2}",
            lastGyroData.x, lastGyroData.y, lastGyroData.z);

        // Add tracking status
        // if (!trackingValid)
        // {
        //     gyroText.text += "\n(Tracking lost)";
        // }

        // Add magnitude
        gyroText.text += $"\nMag: {lastGyroData.magnitude:F2}";
    }

    void OnDestroy()
    {
        // Shutdown the native plugin
        if (pluginInitialized)
        {
            try
            {
                OpenVRNativeAccess.ShutdownPlugin();
                Debug.Log("Native plugin shut down");
            }
            catch (Exception e)
            {
                Debug.LogError($"Error shutting down native plugin: {e.Message}");
            }
        }
    }
}