/*
 *  GooseControlBlock.cs
 *
 *  Copyright 2017-2025 Michael Zillgith
 *
 *  This file is part of libIEC61850.
 *
 *  libIEC61850 is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  libIEC61850 is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with libIEC61850.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  See COPYING file for the complete license text.
 */
using IEC61850.Common;
using System;
using System.Runtime.InteropServices;

namespace IEC61850
{
    namespace Client
    {

        public class GooseControlBlock : IDisposable
        {

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern IntPtr ClientGooseControlBlock_create(string dataAttributeReference);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern void ClientGooseControlBlock_destroy(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern IntPtr IedConnection_getGoCBValues(IntPtr connection, out int error, string rcbReference, IntPtr updateRcb);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern void IedConnection_setGoCBValues(IntPtr connection, out int error, IntPtr rcb, UInt32 parametersMask, [MarshalAs(UnmanagedType.I1)] bool singleRequest);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            [return: MarshalAs(UnmanagedType.I1)]
            static extern bool ClientGooseControlBlock_getGoEna(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern void ClientGooseControlBlock_setGoEna(IntPtr self, [MarshalAs(UnmanagedType.I1)] bool rptEna);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern IntPtr ClientGooseControlBlock_getGoID(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern void ClientGooseControlBlock_setGoID(IntPtr self, string goId);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern IntPtr ClientGooseControlBlock_getDatSet(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern void ClientGooseControlBlock_setDatSet(IntPtr self, string datSet);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern UInt32 ClientGooseControlBlock_getConfRev(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            [return: MarshalAs(UnmanagedType.I1)]
            static extern bool ClientGooseControlBlock_getNdsComm(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern UInt32 ClientGooseControlBlock_getMinTime(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern UInt32 ClientGooseControlBlock_getMaxTime(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            [return: MarshalAs(UnmanagedType.I1)]
            static extern bool ClientGooseControlBlock_getFixedOffs(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern PhyComAddress ClientGooseControlBlock_getDstAddress(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern IntPtr ClientGooseControlBlock_getDstAddress_addr(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern byte ClientGooseControlBlock_getDstAddress_priority(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern UInt16 ClientGooseControlBlock_getDstAddress_vid(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern UInt16 ClientGooseControlBlock_getDstAddress_appid(IntPtr self);

            [DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
            static extern void ClientGooseControlBlock_setDstAddress(IntPtr self, PhyComAddress value);


            private IntPtr self;
            private IntPtr connection;
            private string objectReference;

            private bool isDisposed = false;

            private bool flagGoEna = false;
            private bool flagGoID = false;
            private bool flagDatSet = false;
            private bool flagDstAddress = false;

            internal GooseControlBlock(string objectReference, IntPtr connection)
            {
                self = ClientGooseControlBlock_create(objectReference);
                this.connection = connection;
                this.objectReference = objectReference;
            }

            public string GetObjectReference()
            {
                return objectReference;
            }

            /// <summary>
            /// Read all GoCB values from the server
            /// </summary>
            /// <exception cref="IedConnectionException">This exception is thrown if there is a connection or service error</exception>
            public void GetCBValues()
            {
                int error;

                IedConnection_getGoCBValues(connection, out error, objectReference, self);

                if (error != 0)
                    throw new IedConnectionException("getGoCBValues service failed", error);
            }

            private void
            resetSendFlags()
            {
                flagGoEna = false;
                flagGoID = false;
                flagDatSet = false;
                flagDstAddress = false;
            }

            public void SetCBValues(bool singleRequest)
            {
                UInt32 parametersMask = 0;

                if (flagGoEna)
                    parametersMask += 1;

                if (flagGoID)
                    parametersMask += 2;

                if (flagDatSet)
                    parametersMask += 4;

                if (flagDstAddress)
                    parametersMask += 32;

                int error;

                IedConnection_setGoCBValues(connection, out error, self, parametersMask, singleRequest);

                resetSendFlags();

                if (error != 0)
                    throw new IedConnectionException("setGoCBValues service failed", error);
            }

            public void SetCBValues()
            {
                SetCBValues(true);
            }

            public bool GetGoEna()
            {
                return ClientGooseControlBlock_getGoEna(self);
            }

            public void SetGoEna(bool value)
            {
                ClientGooseControlBlock_setGoEna(self, value);

                flagGoEna = true;
            }

            public string GetGoID()
            {
                IntPtr goIdRef = ClientGooseControlBlock_getGoID(self);

                return Marshal.PtrToStringAnsi(goIdRef);
            }

            public void SetGoID(string goID)
            {
                ClientGooseControlBlock_setGoID(self, goID);

                flagGoID = true;
            }

            public string GetDatSet()
            {
                IntPtr datSetRef = ClientGooseControlBlock_getDatSet(self);

                return Marshal.PtrToStringAnsi(datSetRef);
            }

            public void SetDataSet(string datSet)
            {
                ClientGooseControlBlock_setDatSet(self, datSet);

                flagDatSet = true;
            }

            public UInt32 GetConfRev()
            {
                return ClientGooseControlBlock_getConfRev(self);
            }

            public bool GetNdsComm()
            {
                return ClientGooseControlBlock_getNdsComm(self);
            }

            public UInt32 GetMinTime()
            {
                return ClientGooseControlBlock_getMinTime(self);
            }

            public UInt32 GetMaxTime()
            {
                return ClientGooseControlBlock_getMaxTime(self);
            }

            public bool GetFixedOffs()
            {
                return ClientGooseControlBlock_getFixedOffs(self);
            }

            public PhyComAddress GetDstAddress()
            {
                PhyComAddress addr = new PhyComAddress();

                IntPtr value = ClientGooseControlBlock_getDstAddress_addr(self);

                MmsValue mmsValue = new MmsValue(value);

                byte[] dstMacAddr = mmsValue.getOctetString();

                dstMacAddr.CopyTo(addr.dstAddress, 0);

                addr.dstAddress = dstMacAddr;

                addr.appId = ClientGooseControlBlock_getDstAddress_appid(self);
                addr.vlanId = ClientGooseControlBlock_getDstAddress_vid(self);
                addr.vlanPriority = ClientGooseControlBlock_getDstAddress_priority(self);

                return addr;
            }

            public void SetDstAddress(PhyComAddress value)
            {
                ClientGooseControlBlock_setDstAddress(self, value);

                flagDstAddress = true;
            }

            public void Dispose()
            {
                if (isDisposed == false)
                {
                    isDisposed = true;
                    ClientGooseControlBlock_destroy(self);
                    self = IntPtr.Zero;
                }
            }

            ~GooseControlBlock()
            {
                Dispose();
            }

        }
    }
}