using EC.Helper.Onvif.Common;
using EC.Helper.Onvif.Device;
using EC.Helper.Onvif.Imaging;
using EC.Helper.Onvif.Media;
using EC.Helper.Onvif.PTZ;
using System.Net;
using Capabilities = EC.Helper.Onvif.Common.Capabilities;

namespace EC.Helper.Onvif;

public class OnvifClient
{
    #region Attr

    public string Hostname { get; private set; }

    public string Username { get; private set; }

    public string Password { get; private set; }

    #endregion Attr

    #region Client Attr

    protected DeviceClient Device { get; set; }

    protected MediaClient Media { get; set; }

    protected PTZClient PTZ { get; set; }

    protected ImagingClient Imaging { get; set; }

    protected Capabilities Caps { get; set; }

    #endregion Client Attr

    #region Cache Attr

    protected string ProfileToken { get; set; }

    protected string VideoSourceToken { get; set; }

    protected string SteamUrl { get; set; }

    protected string SnapshotUrl { get; set; }

    #endregion Cache Attr

    public OnvifClient(string hostname, string username, string password)
    {
        Hostname = hostname;
        Username = username;
        Password = password;
    }

    public async Task<bool> Init()
    {
        try
        {
            Device = await OnvifClientFactory.CreateDeviceClientAsync(Hostname, Username, Password);
            Media = await OnvifClientFactory.CreateMediaClientAsync(Hostname, Username, Password);
            PTZ = await OnvifClientFactory.CreatePTZClientAsync(Hostname, Username, Password);
            Imaging = await OnvifClientFactory.CreateImagingClientAsync(Hostname, Username, Password);
            var profiles = await Media.GetProfilesAsync();
            var videoSources = await Media.GetVideoSourcesAsync();

            foreach (var profile in profiles.Profiles)
            {
                if (string.IsNullOrEmpty(ProfileToken))
                {
                    ProfileToken = profile.token;
                    break;
                }
            }

            foreach (var source in videoSources.VideoSources)
            {
                if (string.IsNullOrEmpty(VideoSourceToken))
                {
                    VideoSourceToken = source.token;
                    break;
                }
            }

            Caps = (await Device.GetCapabilitiesAsync(new CapabilityCategory[] { CapabilityCategory.All })).Capabilities;
        }
        catch (Exception)
        {
            return false;
            throw;
        }
        return true;
    }

    #region DeviceClient

    public bool IsDeviceContected()
    {
        return Device != null;
    }

    #endregion DeviceClient

    #region MediaClient

    public bool IsMediaContected()
    {
        bool ret = IsDeviceContected();
        return ret;
    }

    protected StreamSetup RtspStreamSetup { get; } = new()
    {
        Stream = StreamType.RTPUnicast,
        Transport = new() { Protocol = TransportProtocol.RTSP }
    };

    public async Task<string> GetStreamUrl()
    {
        if (string.IsNullOrEmpty(SteamUrl))
        {
            MediaUri mediaUri = await Media.GetStreamUriAsync(RtspStreamSetup, ProfileToken);
            SteamUrl = mediaUri.Uri;
        }
        return SteamUrl;
    }

    public async Task<string> GetSnapshotUrl()
    {
        if (string.IsNullOrEmpty(SnapshotUrl))
        {
            MediaUri mediaUri = await Media.GetSnapshotUriAsync(ProfileToken);
            SnapshotUrl = mediaUri.Uri;
        }
        return SnapshotUrl;
    }

    public async Task<string> GetSnapshot()
    {
        string url = await GetSnapshotUrl();
        WebRequest request = WebRequest.Create(url);
        request.Method = "GET";
        request.PreAuthenticate = true;
        request.Credentials = new NetworkCredential(Username, Password);
        using HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        using Stream stream = response.GetResponseStream();
        using MemoryStream mStream = new();
        byte[] buffer = new byte[1024];
        int byteCount;
        do
        {
            byteCount = stream.Read(buffer, 0, buffer.Length);
            mStream.Write(buffer, 0, byteCount);
        } while (byteCount > 0);
        mStream.Position = 0;
        return Convert.ToBase64String(mStream.ToArray());
    }

    #endregion MediaClient

    #region PTZClient

    public bool IsPTZContected()
    {
        bool ret = IsDeviceContected() && (PTZ != null) && !string.IsNullOrEmpty(ProfileToken);
        return ret;
    }

    /// <summary>
    /// 绝对移动
    /// </summary>
    /// <param name="pan"></param>
    /// <param name="tilt"></param>
    /// <param name="zoom"></param>
    /// <param name="atomDist"></param>
    /// <returns></returns>
    public async Task AbsoluteMove(float pan, float tilt, float zoom, float atomDist = 0.1f)
    {
        await PTZ.AbsoluteMoveAsync(ProfileToken, new PTZVector
        {
            PanTilt = new Vector2D { x = pan, y = tilt },
            Zoom = new Vector1D { x = zoom }
        }, new PTZSpeed
        {
            PanTilt = new Vector2D { x = atomDist, y = atomDist },
            Zoom = new Vector1D { x = atomDist }
        });
    }

    /// <summary>
    /// 相对移动
    /// </summary>
    /// <param name="pan">[-1,1]</param>
    /// <param name="tilt">[-1,1]</param>
    /// <param name="zoom">[-1,1]</param>
    /// <param name="atomSpeed">[0,1]</param>
    public async Task RelativeMove(float pan, float tilt, float zoom, float atomSpeed = 0.1f)
    {
        await PTZ.RelativeMoveAsync(ProfileToken, new PTZVector
        {
            PanTilt = new Vector2D { x = pan, y = tilt },
            Zoom = new Vector1D { x = zoom }
        }, new PTZSpeed
        {
            PanTilt = new Vector2D { x = atomSpeed, y = atomSpeed },
            Zoom = new Vector1D { x = atomSpeed }
        });
    }

    /// <summary>
    ///	持续移动
    /// </summary>
    /// <param name="pan">[-1,1]</param>
    /// <param name="tilt">[-1,1]</param>
    /// <param name="zoom">[-1,1]</param>
    /// <param name="timeout">ms</param>
    public async Task ContinuousMove(float pan, float tilt, float zoom, string timeout = "")
    {
        await PTZ.ContinuousMoveAsync(ProfileToken, new PTZSpeed
        {
            PanTilt = new Vector2D { x = pan, y = tilt },
            Zoom = new Vector1D { x = zoom }
        }, timeout);
    }

    public async Task StopMove()
    {
        await PTZ.StopAsync(ProfileToken, true, true);
    }

    public async Task<PTZStatus> GetStatus()
    {
        return await PTZ.GetStatusAsync(ProfileToken);
    }

    #endregion PTZClient

    #region ImagingClient

    public bool IsImagingContected()
    {
        bool ret = IsDeviceContected();
        return ret;
    }

    public async Task FocusAbsoluteMove(float position)
    {
        await Imaging.MoveAsync(VideoSourceToken, new FocusMove
        {
            Absolute = new AbsoluteFocus
            {
                Position = position,
                //Speed = 1f,
                //SpeedSpecified = true
            }
        });
    }

    public async Task FocusRelativeMove(float distance)
    {
        await Imaging.MoveAsync(VideoSourceToken, new FocusMove
        {
            Relative = new RelativeFocus
            {
                Distance = distance,
                //Speed = 1f,
                //SpeedSpecified = true
            }
        });
    }

    public async Task FocusContinuousMove(float speed)
    {
        await Imaging.MoveAsync(VideoSourceToken, new FocusMove
        {
            Continuous = new ContinuousFocus { Speed = speed }
        });
    }

    public async Task FocusStopMove()
    {
        await Imaging.StopAsync(VideoSourceToken);
    }

    #endregion ImagingClient
}