//#define Linux32
//#define Linux64
//#define Win32
//#define Win64

using System.Runtime.InteropServices;

namespace EC.Helper.CameraSDK;

public static class DaHuaOriSDK
{
    #region Lib Attr

#if (Linux32)
    private const string LibDhNetSDK = @"./libs/dahua/linux32/libdhnetsdk.so";
#elif (Linux64)
    private const string LibDhNetSDK = @"./libs/dahua/linux64/libdhnetsdk.so";
#elif (Win32)
    private const string LibDhNetSDK = @"./libs/dahua/win32/dhnetsdk.dll";
#elif (Win64)
    private const string LibDhNetSDK = @"./libs/dahua/win64/dhnetsdk.dll";
#endif

    #endregion Lib Attr

    static DaHuaOriSDK()
    {
        GlobalInit();
    }

    #region Global

    public static bool InitSuccess { get; private set; }

    public static bool GlobalInit()
    {
        if (InitSuccess) return true;
        bool ret = CLIENT_InitEx(null, IntPtr.Zero, IntPtr.Zero);
        InitSuccess = ret;
        if (!ret) throw new Exception("DaHuaOriSDK global init failure.");
        return ret;
    }

    public static bool GlobalDestory()
    {
        if (!InitSuccess) return true;
        CLIENT_Cleanup();
        InitSuccess = false;
        return true;
    }

    #endregion Global

    #region SDK Enum

    /// <summary>
    /// login device mode enumeration
    /// 登陆设备方式枚举
    /// </summary>
    public enum EM_LOGIN_SPAC_CAP_TYPE
    {
        /// <summary>
        /// TCP login, default
        /// TCP登陆, 默认方式
        /// </summary>
        TCP = 0,

        /// <summary>
        /// No criteria login
        /// 无条件登陆
        /// </summary>
        ANY = 1,

        /// <summary>
        /// auto sign up login
        /// 主动注册的登入
        /// </summary>
        SERVER_CONN = 2,

        /// <summary>
        /// multicast login, default
        /// 组播登陆
        /// </summary>
        MULTICAST = 3,

        /// <summary>
        /// UDP method login
        /// UDP方式下的登入
        /// </summary>
        UDP = 4,

        /// <summary>
        /// only main connection login
        /// 只建主连接下的登入
        /// </summary>
        MAIN_CONN_ONLY = 6,

        /// <summary>
        /// SSL encryption login
        /// SSL加密方式登陆
        /// </summary>
        SSL = 7,

        /// <summary>
        /// login IVS box remote device
        /// 登录智能盒远程设备
        /// </summary>
        INTELLIGENT_BOX = 9,

        /// <summary>
        /// login device do not config
        /// 登录设备后不做取配置操作
        /// </summary>
        NO_CONFIG = 10,

        /// <summary>
        /// USB key device login
        /// 用U盾设备的登入
        /// </summary>
        U_LOGIN = 11,

        /// <summary>
        /// LDAP login
        /// LDAP方式登录
        /// </summary>
        LDAP = 12,

        /// <summary>
        /// AD login
        /// AD（ActiveDirectory）登录方式
        /// </summary>
        AD = 13,

        /// <summary>
        /// Radius  login
        /// Radius 登录方式
        /// </summary>
        RADIUS = 14,

        /// <summary>
        /// Socks5 login
        /// Socks5登陆方式
        /// </summary>
        SOCKET_5 = 15,

        /// <summary>
        /// cloud login
        /// 云登陆方式
        /// </summary>
        CLOUD = 16,

        /// <summary>
        /// dual authentication loin
        /// 二次鉴权登陆方式
        /// </summary>
        AUTH_TWICE = 17,

        /// <summary>
        /// TS stream client login
        /// TS码流客户端登陆方式
        /// </summary>
        TS = 18,

        /// <summary>
        /// web private login
        /// 为P2P登陆方式
        /// </summary>
        P2P = 19,

        /// <summary>
        /// mobile client login
        /// 手机客户端登陆
        /// </summary>
        MOBILE = 20,

        /// <summary>
        /// invalid login
        /// 无效的登陆方式
        /// </summary>
        INVALID = 21,
    }

    /// <summary>
    /// device type enumeration
    /// 设备类型枚举
    /// </summary>
    public enum EM_NET_DEVICE_TYPE
    {
        /// <summary>
        /// Unknow
        //  未知
        /// </summary>
        NET_PRODUCT_NONE = 0,

        /// <summary>
        /// Non real-time MACE
        /// 非实时MACE
        /// </summary>
        NET_DVR_NONREALTIME_MACE,

        /// <summary>
        /// Non real-time
        /// 非实时
        /// </summary>
        NET_DVR_NONREALTIME,

        /// <summary>
        /// Network video server
        /// 网络视频服务器
        /// </summary>
        NET_NVS_MPEG1,

        /// <summary>
        /// MPEG1 2-ch DVR
        /// MPEG1二路录像机
        /// </summary>
        NET_DVR_MPEG1_2,

        /// <summary>
        /// MPEG1 8-ch DVR
        /// MPEG1八路录像机
        /// </summary>
        NET_DVR_MPEG1_8,

        /// <summary>
        /// MPEG4 8-ch DVR
        /// MPEG4八路录像机
        /// </summary>
        NET_DVR_MPEG4_8,

        /// <summary>
        /// MPEG4 16-ch DVR
        /// MPEG4 十六路录像机
        /// </summary>
        NET_DVR_MPEG4_16,

        /// <summary>
        /// LB series DVR
        /// LB系列录像机
        /// </summary>
        NET_DVR_MPEG4_SX2,

        /// <summary>
        /// GB  series DVR
        /// GB系列录像机
        /// </summary>
        NET_DVR_MEPG4_ST2,

        /// <summary>
        /// HB  series DVR
        /// HB系列录像机
        /// </summary>
        NET_DVR_MEPG4_SH2,

        /// <summary>
        /// GBE  series DVR
        /// GBE系列录像机
        /// </summary>
        NET_DVR_MPEG4_GBE,

        /// <summary>
        /// II network video server
        /// II代网络视频服务器
        /// </summary>
        NET_DVR_MPEG4_NVSII,

        /// <summary>
        /// New standard configuration protocol
        /// 新标准配置协议
        /// </summary>
        NET_DVR_STD_NEW,

        /// <summary>
        /// DDNS server
        /// DDNS服务器
        /// </summary>
        NET_DVR_DDNS,

        /// <summary>
        /// ATM series
        /// ATM机
        /// </summary>
        NET_DVR_ATM,

        /// <summary>
        /// 2nd non real-time NB series DVR
        /// 二代非实时NB系列机器
        /// </summary>
        NET_NB_SERIAL,

        /// <summary>
        /// LN  series
        /// LN系列产品
        /// </summary>
        NET_LN_SERIAL,

        /// <summary>
        /// BAV series
        /// BAV系列产品
        /// </summary>
        NET_BAV_SERIAL,

        /// <summary>
        /// SDIP series
        /// SDIP系列产品
        /// </summary>
        NET_SDIP_SERIAL,

        /// <summary>
        /// IPC series
        /// IPC系列产品
        /// </summary>
        NET_IPC_SERIAL,

        /// <summary>
        /// NVS B series
        /// NVS B系列
        /// </summary>
        NET_NVS_B,

        /// <summary>
        /// NVS H series
        /// NVS H系列
        /// </summary>
        NET_NVS_C,

        /// <summary>
        /// NVS S series
        /// NVS S系列
        /// </summary>
        NET_NVS_S,

        /// <summary>
        /// NVS E series
        /// NVS E系列
        /// </summary>
        NET_NVS_E,

        /// <summary>
        /// Search device type from QueryDevState. it is in string format
        /// 从QueryDevState中查询设备类型,以字符串格式
        /// </summary>
        NET_DVR_NEW_PROTOCOL,

        /// <summary>
        /// NVD
        /// 解码器
        /// </summary>
        NET_NVD_SERIAL,

        /// <summary>
        /// N5
        /// N5
        /// </summary>
        NET_DVR_N5,

        /// <summary>
        /// HDVR
        /// 混合DVR
        /// </summary>
        NET_DVR_MIX_DVR,

        /// <summary>
        /// SVR series
        /// SVR系列
        /// </summary>
        NET_SVR_SERIAL,

        /// <summary>
        /// SVR-BS
        /// SVR-BS
        /// </summary>
        NET_SVR_BS,

        /// <summary>
        /// NVR series
        /// NVR系列
        /// </summary>
        NET_NVR_SERIAL,

        /// <summary>
        /// N51
        /// N51
        /// </summary>
        NET_DVR_N51,

        /// <summary>
        /// ITSE Intelligent Analysis Box
        /// ITSE 智能分析盒
        /// </summary>
        NET_ITSE_SERIAL,

        /// <summary>
        /// Intelligent traffic camera equipment
        /// 智能交通像机设备
        /// </summary>
        NET_ITC_SERIAL,

        /// <summary>
        /// radar speedometer HWS
        /// 雷达测速仪HWS
        /// </summary>
        NET_HWS_SERIAL,

        /// <summary>
        /// portable video record
        /// 便携式音视频录像机
        /// </summary>
        NET_PVR_SERIAL,

        /// <summary>
        /// IVS(intelligent video server series)
        /// IVS（智能视频服务器系列）
        /// </summary>
        NET_IVS_SERIAL,

        /// <summary>
        /// universal intelligent detect video server series
        /// 通用智能视频侦测服务器
        /// </summary>
        NET_IVS_B,

        /// <summary>
        /// face recognisation server
        /// 人脸识别服务器
        /// </summary>
        NET_IVS_F,

        /// <summary>
        /// video quality diagnosis server
        /// 视频质量诊断服务器
        /// </summary>
        NET_IVS_V,

        /// <summary>
        /// matrix
        /// 矩阵
        /// </summary>
        NET_MATRIX_SERIAL,

        /// <summary>
        /// N52
        /// N52
        /// </summary>
        NET_DVR_N52,

        /// <summary>
        /// N56
        /// N56
        /// </summary>
        NET_DVR_N56,

        /// <summary>
        /// ESS
        /// ESS
        /// </summary>
        NET_ESS_SERIAL,

        /// <summary>
        /// 人数统计服务器
        /// </summary>
        NET_IVS_PC,

        /// <summary>
        /// pc-nvr
        /// pc-nvr
        /// </summary>
        NET_PC_NVR,

        /// <summary>
        /// screen controller
        /// 大屏控制器
        /// </summary>
        NET_DSCON,

        /// <summary>
        /// network video storage server
        /// 网络视频存储服务器
        /// </summary>
        NET_EVS,

        /// <summary>
        /// an embedded intelligent video analysis system
        /// 嵌入式智能分析视频系统
        /// </summary>
        NET_EIVS,

        /// <summary>
        /// DVR-N6
        /// DVR-N6
        /// </summary>
        NET_DVR_N6,

        /// <summary>
        /// K-Lite Codec Pack
        /// 万能解码器
        /// </summary>
        NET_UDS,

        /// <summary>
        /// Bank alarm host
        /// 银行报警主机
        /// </summary>
        NET_AF6016,

        /// <summary>
        /// Video network alarm host
        /// 视频网络报警主机
        /// </summary>
        NET_AS5008,

        /// <summary>
        /// Network alarm host
        /// 网络报警主机
        /// </summary>
        NET_AH2008,

        /// <summary>
        /// Alarm host series
        /// 报警主机系列
        /// </summary>
        NET_A_SERIAL,

        /// <summary>
        /// Access control series of products
        /// 门禁系列产品
        /// </summary>
        NET_BSC_SERIAL,

        /// <summary>
        /// NVS series product
        /// NVS系列产品
        /// </summary>
        NET_NVS_SERIAL,

        /// <summary>
        /// VTO series product
        /// VTO系列产品
        /// </summary>
        NET_VTO_SERIAL,

        /// <summary>
        /// VTNC series product
        /// VTNC系列产品
        /// </summary>
        NET_VTNC_SERIAL,

        /// <summary>
        /// TPC series product, it is the thermal device
        /// TPC系列产品, 即热成像设备
        /// </summary>
        NET_TPC_SERIAL,

        /// <summary>
        /// ASM series product
        /// 无线中继设备
        /// </summary>
        NET_ASM_SERIAL,

        /// <summary>
        /// VTS series product
        /// 管理机
        /// </summary>
        NET_VTS_SERIAL,

        /// <summary>
        /// Alarm host-ARC2016C
        /// 报警主机ARC2016C
        /// </summary>
        NET_ARC2016C,

        /// <summary>
        /// ASA Attendance machine
        /// 考勤机
        /// </summary>
        NET_ASA,

        /// <summary>
        /// Industry terminal walkie-talkie
        /// 行业对讲终端
        /// </summary>
        NET_VTT_SERIAL,

        /// <summary>
        /// Alarm column
        /// 报警柱
        /// </summary>
        NET_VTA_SERIAL,

        /// <summary>
        /// SIP Server
        /// SIP服务器
        /// </summary>
        NET_VTNS_SERIAL,

        /// <summary>
        /// Indoor unit
        /// 室内机
        /// </summary>
        NET_VTH_SERIAL,
    }

    /// <summary>
    /// 查询设备信息参数
    /// </summary>
    public enum EM_DEVICE_STATE
    {
        /// <summary>
        /// Query device online state(return a DWORD value, 1-online, 0-offline)
        /// 查询设备的在线状态(返回一个DWORD, 1表示在线, 0表示断线)
        /// </summary>
        ONLINE = 0x0035,

        /// <summary>
        /// Query ptz state(struct DH_PTZ_LOCATION_INFO)
        /// 查询云台状态信息(对应结构体 DH_PTZ_LOCATION_INFO)
        /// </summary>
        PTZ_LOCATION = 0x0036,
    }

    /// <summary>
    /// 预置点状态枚举
    /// </summary>
    public enum EM_DH_PTZ_PRESET_STATUS
    {
        UNKNOWN,        // 未知
        REACH,          // 预置点到达
        UNREACH,        // 预置点未到达
    }

    #endregion SDK Enum

    #region SDK Struct

    /// <summary>
    /// CLIENT_LoginWithHighLevelSecurity 输入参数
    /// </summary>
    public struct NET_IN_LOGIN_WITH_HIGHLEVEL_SECURITY
    {
        public uint dwSize;// 结构体大小

        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
        public string szIP; // IP

        public int nPort;              // 端口

        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
        public string szUserName; // 用户名

        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
        public string szPassword; // 密码

        public EM_LOGIN_SPAC_CAP_TYPE emSpecCap;           // 登录模式

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
        public byte[] byReserved; // 字节对齐

        public IntPtr pCapParam;            // 见 CLIENT_LoginEx 接口 pCapParam 与 nSpecCap 关系
    }

    /// <summary>
    /// device information structure
    /// 设备信息结构体
    /// </summary>
    public struct NET_DEVICEINFO_Ex
    {
        /// <summary>
        /// serial number
        /// 序列号
        /// </summary>
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 48)]
        public string sSerialNumber;

        /// <summary>
        /// count of alarm input
        /// 报警输入个数
        /// </summary>
        public int nAlarmInPortNum;

        /// <summary>
        /// count of alarm output
        /// 报警输出个数
        /// </summary>
        public int nAlarmOutPortNum;

        /// <summary>
        /// number of disk
        /// 硬盘个数
        /// </summary>
        public int nDiskNum;

        /// <summary>
        /// device type, refer to EM_NET_DEVICE_TYPE
        /// 设备类型,见枚举NET_DEVICE_TYPE
        /// </summary>
        public EM_NET_DEVICE_TYPE nDVRType;

        /// <summary>
        /// number of channel
        /// 通道个数
        /// </summary>
        public int nChanNum;

        /// <summary>
        /// Online Timeout, Not Limited Access to 0, not 0 Minutes Limit Said
        /// 在线超时时间,为0表示不限制登陆,非0表示限制的分钟数
        /// </summary>
        public byte byLimitLoginTime;

        /// <summary>
        /// When login failed due to password error, notice user by this parameter.This parameter is invalid when remaining login times is zero
        /// 当登陆失败原因为密码错误时,通过此参数通知用户,剩余登陆次数,为0时表示此参数无效
        /// </summary>
        public byte byLeftLogTimes;

        /// <summary>
        /// keep bytes for aligned
        /// 保留字节,字节对齐
        /// </summary>
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
        public byte[] bReserved;

        /// <summary>
        /// when log in failed,the left time for users to unlock (seconds), -1 indicate the device haven't set the parameter
        /// 当登陆失败,用户解锁剩余时间（秒数）, -1表示设备未设置该参数
        /// </summary>
        public int nLockLeftTime;

        /// <summary>
        /// reserved
        /// 保留字节
        /// </summary>
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 24)]
        public byte[] Reserved;
    }

    /// <summary>
    /// CLIENT_LoginWithHighLevelSecurity 输出参数
    /// </summary>
    public struct NET_OUT_LOGIN_WITH_HIGHLEVEL_SECURITY
    {
        public uint dwSize;// 结构体大小
        public NET_DEVICEINFO_Ex stuDeviceInfo;        // 设备信息
        public int nError;             // 错误码，见 CLIENT_Login 接口错误码

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 132)]
        public byte[] byReserved; // 保留字节
    }

    /// <summary>
    /// 云台定位中非归一化坐标和变倍
    /// </summary>
    public struct NET_PTZSPACE_UNNORMALIZED
    {
        public int nPosX;           // x坐标
        public int nPosY;           // y坐标
        public int nZoom;           // 放大倍率

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 52)]
        public byte[] byReserved;   // 预留字节
    }

    /// <summary>
    /// 云台定位信息
    /// </summary>
    //云台定位信息
    public struct DH_PTZ_LOCATION_INFO
    {
        public int nChannelID;                  // 通道号
        public int nPTZPan;                     // 云台水平运动位置,有效范围：[0,3600]
        public int nPTZTilt;                    // 云台垂直运动位置,有效范围：[-1800,1800]
        public int nPTZZoom;                    // 云台光圈变动位置,有效范围：[0,128]
        public byte bState;                     // 云台运动状态, 0-未知 1-运动 2-空闲
        public byte bAction;                    // 云台动作,255-未知,0-预置点,1-线扫,2-巡航,3-巡迹,4-水平旋转,5-普通移动,6-巡迹录制,7-全景云台扫描,8-热度图

        // 9-精确定位,10-设备校正,11-智能配置，12-云台重启
        public byte bFocusState;                // 云台聚焦状态, 0-未知, 1-运动状态, 2-空闲

        public byte bEffectiveInTimeSection;    // 在时间段内预置点状态是否有效

        //如果当前上报的预置点是时间段内的预置点,则为1,其他情况为0
        public int nPtzActionID;                       // 巡航ID号

        public uint dwPresetID;                 // 云台所在预置点编号
        public float fFocusPosition;            // 聚焦位置
        public byte bZoomState;                 // 云台ZOOM状态,0-未知,1-ZOOM,2-空闲

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
        public byte[] bReserved;                // 对齐

        public uint dwSequence;                 // 包序号,用于校验是否丢包
        public uint dwUTC;                      // 对应的UTC(1970-1-1 00:00:00)秒数。
        public EM_DH_PTZ_PRESET_STATUS emPresetStatus; // 预置点位置

        /// <summary>
        /// 保留字段
        /// </summary>
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 248)]
        public int[] reserved;
    };

    #endregion SDK Struct

    #region Common Method

    /// <summary>
    /// network disconnection callback function original shape
    /// 断线回调函数
    /// </summary>
    /// <param name="lLoginID">user LoginID:Login's returns value 登陆ID</param>
    /// <param name="pchDVRIP">device IP 设备IP</param>
    /// <param name="nDVRPort">device prot 设备端口</param>
    /// <param name="dwUser">user data from Init function 用户数据</param>
    public delegate void fDisConnectCallBack(IntPtr lLoginID, IntPtr pchDVRIP, int nDVRPort, IntPtr dwUser);

    /// <summary>
    /// network re-connection callback function original shape
    /// 重连回调函数
    /// </summary>
    /// <param name="lLoginID">user LoginID:Login's returns value 登陆ID</param>
    /// <param name="pchDVRIP">device IP,string type 设备IP</param>
    /// <param name="nDVRPort">device prot 设备端口</param>
    /// <param name="dwUser">user data from SetAutoReconnect function 用户数据</param>
    public delegate void fHaveReConnectCallBack(IntPtr lLoginID, IntPtr pchDVRIP, int nDVRPort, IntPtr dwUser);

    [DllImport(LibDhNetSDK)]
    public static extern bool CLIENT_InitEx(fDisConnectCallBack? cbDisConnect, IntPtr dwUser, IntPtr lpInitParam);

    [DllImport(LibDhNetSDK)]
    public static extern void CLIENT_Cleanup();

    [DllImport(LibDhNetSDK)]
    public static extern int CLIENT_GetLastError();

    [DllImport(LibDhNetSDK)]
    public static extern IntPtr CLIENT_LoginWithHighLevelSecurity(ref NET_IN_LOGIN_WITH_HIGHLEVEL_SECURITY pstInParam, ref NET_OUT_LOGIN_WITH_HIGHLEVEL_SECURITY pstOutParam);

    [DllImport(LibDhNetSDK)]
    public static extern bool CLIENT_Logout(IntPtr lLoginID);

    [DllImport(LibDhNetSDK)]
    public static extern void CLIENT_SetAutoReconnect(fHaveReConnectCallBack cbAutoConnect, IntPtr dwUser);

    [DllImport(LibDhNetSDK)]
    public static extern bool CLIENT_QueryDevState(IntPtr lLoginID, int nType, IntPtr pBuf, int nBufLen, ref int pRetLen, int waittime);

    #endregion Common Method
}