using System.Collections;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

// using AndroidJavaClass = UnityEngine.AndroidJNI.AndroidJavaClass;
// using AndroidJavaObject = UnityEngine.AndroidJNI.AndroidJavaObject;

public class PcWebCamera : MonoBehaviour
{
    public int cameraIndex = 0;
    public int width = 320;
    public int height = 240;
    public int fps = 30;
    public string deviceName;

    private WebCamTexture _webCamTexture;
    public WebCamTexture webCamTexture { get => _webCamTexture; set => _webCamTexture = value; }
    public Vector2 Size => new Vector2(width, height);

    public float brightness = 0.0f; // 亮度调整值，范围 -1.0 到 1.0
    public float contrast = 1.0f;   // 对比度调整值，范围 0.0 到 2.0


    private void Awake()
    {
        SceneManager.sceneLoaded += OnSceneLoaded;
    }
    private IEnumerator Start()
    {
        yield return new WaitForEndOfFrame();
        OnClick_Open();
    }
    void OnSceneLoaded(Scene scene, LoadSceneMode mode)
    {
        Debug.Log("Scene Loaded: " + scene.name);
        Debug.Log("Load Scene Mode: " + mode);
        // 在场景加载时执行的代码
        if (BluetoothAim.ins && (BluetoothAim.ins.isMainConnectToHOUYIPRO() || BluetoothAim.ins.isMainConnectToGun()))
        {
            StartCoroutine(RestartWebCam());
        }
        else if (scene.name == "Home") {
            //没连接设备时候，如果跳回home页面，设置一次
            StartCoroutine(RestartWebCam());
        }
    }
    IEnumerator RestartWebCam()
    {
        yield return new WaitForSecondsRealtime(1); // 延迟 x 秒重启 WebCamTexture
        if (_webCamTexture != null)
        {
            _webCamTexture.Stop();
            _webCamTexture.Play();
        }
    }
    private Color32[] pixels;
    private Texture2D adjustedTexture;
    private int frameCounter = 0;
    public int updateInterval = 5;  // 每隔多少帧更新一次图像

    private void Update()
    {
        if (_webCamTexture)
        {
            width = _webCamTexture.width;
            height = _webCamTexture.height;
            fps = (int)_webCamTexture.requestedFPS;

            frameCounter++;
            //&& frameCounter % updateInterval == 0
            //if (_webCamTexture.didUpdateThisFrame )
            //{
            //    // 获取 WebCamTexture 的像素数据
            //    pixels = _webCamTexture.GetPixels32();

            //    // 调整亮度和对比度
            //    for (int i = 0; i < pixels.Length; i++)
            //    {
            //        pixels[i] = AdjustBrightnessAndContrast(pixels[i], brightness, contrast);
            //    }

            //    // 将调整后的像素数据应用到 Texture2D
            //    adjustedTexture.SetPixels32(pixels);
            //    adjustedTexture.Apply();

            //    // 重置 frameCounter 以防溢出
            //    if (frameCounter >= int.MaxValue - 1)
            //    {
            //        frameCounter = 0;
            //    }
            //}
        }

    }

    public Vector2Int IndexToCoord(int i)
    {
        var y = i / width;
        var x = i % width;
        return new Vector2Int(x, y);
    }

    public int CoordToIndex(int x, int y)
    {
        return y * width + x;
    }

    public void OnClick_Open()
    {

        if (_webCamTexture != null)
        {
            Debug.LogError("开启失败，请先关闭正在使用的摄像头！");
            return;
        }
        if (Application.HasUserAuthorization(UserAuthorization.WebCam))
        {
            WebCamDevice[] devices = WebCamTexture.devices;
            for (int i = 0; i < devices.Length; i++)
            {
                Debug.Log("devices[" + i + "].name:" + devices[i].name);
            }
            if (devices.Length == 0)
            {
                Debug.LogError("开启失败，没找到可用的摄像头！");
                return;
            }
            if (devices.Length < cameraIndex + 1)
            {
                Debug.LogError("开启失败，没有对应序号的摄像头！");
                return;
            }
            deviceName = devices[cameraIndex].name;

            _webCamTexture = new WebCamTexture(deviceName, width, height, fps);
            _webCamTexture.Play();
            // 创建一个 Texture2D 用于存储调整后的图像
            //adjustedTexture = new Texture2D(_webCamTexture.width, _webCamTexture.height);
            Debug.Log("成功开启摄像头 " + deviceName);
            ScreenLocate.Main.WebCamIsReady(_webCamTexture);

           // StartCoroutine(getResolutions(devices[cameraIndex]));
        }
        else
        {
            Debug.LogError("开启失败，用户未授予摄像头权限！");
        }
    }

    IEnumerator getResolutions(WebCamDevice  device) {
        yield return new WaitForSeconds(1.0f);
        // 打印支持的分辨率
        Resolution[] resolutions = device.availableResolutions;
        if (resolutions != null && resolutions.Length > 0)
        {
            foreach (Resolution res in resolutions)
            {
                Debug.Log("支持的分辨率: " + res.width + "x" + res.height);
            }
        }
        else
        {
            Debug.Log("没有可用的分辨率信息。");
        }
    }

    public void newWebCamTexture(string name)
    {
        _webCamTexture = new WebCamTexture(name, width, height, fps);
        _webCamTexture.Play();
        //Debug.Log("[newWebCamTexture]成功开启摄像头");
    }

    public void OnClick_Close()
    {
        if (_webCamTexture != null)
        {
            _webCamTexture.Stop();
            _webCamTexture = null;
            Debug.Log("[OnClick_Close]成功关闭摄像头");
        }
    }
    public WebCamTexture newWebCamTexture(int width, int height)
    {
        _webCamTexture = new WebCamTexture(deviceName, width, height, fps);
        _webCamTexture.Play();
        Debug.Log("[newWebCamTexture]成功开启摄像头");
        return _webCamTexture;
    }
    //修改亮度和对比度
    Color32 AdjustBrightnessAndContrast(Color32 color, float brightness, float contrast)
    {
        float r = color.r / 255.0f;
        float g = color.g / 255.0f;
        float b = color.b / 255.0f;

        // 调整对比度
        r = ((r - 0.5f) * contrast + 0.5f);
        g = ((g - 0.5f) * contrast + 0.5f);
        b = ((b - 0.5f) * contrast + 0.5f);

        // 调整亮度
        r += brightness;
        g += brightness;
        b += brightness;

        // 限制值在 0 到 1 之间
        r = Mathf.Clamp01(r);
        g = Mathf.Clamp01(g);
        b = Mathf.Clamp01(b);

        return new Color32((byte)(r * 255), (byte)(g * 255), (byte)(b * 255), color.a);
    }
}