using System.Drawing;
using DispenserCommon.Enums;
using DispenserCommon.Events;
using DispenserCommon.Exceptions;
using DispenserCommon.Utils;
using DispenserHal.Camera.Client;
using DispenserHal.Camera.DTO;
using DispenserHal.Camera.VO;
using DispenserUI.Exceptions;
using Serilog;

namespace DispenserHal.Camera.Factory;

/// <summary>
///     相机管理器，用于全局管理相机的连接
/// </summary>
public class CameraManager
{
    private static CameraClient? _camera;

    /// <summary>
    ///     全局初始化连接相机
    /// </summary>
    public static void Connect()
    {
        InitCamera();
    }

    /// <summary>
    /// 对相机进行重连
    /// </summary>
    public static void ReConnect()
    {
        ToastUtil.Info("正在尝试重新连接相机");
        Log.Information("正在尝试重新连接相机");

        if (_camera != null)
        {
            Close();
        }

        InitCamera();
    }

    private static void InitCamera()
    {
        try
        {
            EventBus<string>.Publish(EventType.SetupNotify, "正在连接相机");
            _camera = CreateCamera(CameraConfig.CameraSn, CallBack);
            var cameraResponseVo = _camera.Connect();

            if (!cameraResponseVo.IsSuccess())
            {
                ToastUtil.Error($"无法连接到相机 {CameraConfig.CameraSn}");
                throw new CameraException($"无法连接到相机 {CameraConfig.CameraSn}");
            }

            ToastUtil.Success($"相机 {CameraConfig.CameraSn} 连接成功");
            // 连接成功之后开启接收流
            _camera.StartSteaming();
            _camera.SwitchHardTriggerMode();
            Console.WriteLine(cameraResponseVo);


            // 开个子线程来处理接收的图片
            // Task.Run(HandleImage);
        }
        catch (Exception e)
        {
            EventBus<string>.Publish(EventType.SetupNotify, $"相机连接失败，错误信息：{e.Message}");
        }
    }

    private static CameraClient CreateCamera(string sn, Action<string, Bitmap> action)
    {
        var client = CameraFactory.ToBuilder(sn).build();
        client.RegisterCallback(action);
        return client;
    }

    /// <summary>
    ///     收到相机数据后统一向外发送数据
    /// </summary>
    /// <param name="name">相机sn</param>
    /// <param name="bitmap">当前相机回调的数据</param>
    private static void CallBack(string name, Bitmap bitmap)
    {
        EventBus<CameraData>.Publish(EventType.CameraData, new CameraData(name, bitmap));
    }

    public static void Close()
    {
        _camera!.Close();
    }

    /// <summary>
    ///     获取相机对象
    /// </summary>
    public static CameraClient? GetCamera()
    {
        if (_camera!.Connected)
        {
            return _camera;
        }

        EventBus<BizException>.Publish(EventType.Exception,
            new CameraException($"无法链接到相机 {CameraConfig.CameraSn}", level: ExceptionLevel.ERROR));
        return null;
    }
}