using System;
using System.IO;
using System.Runtime.InteropServices;

namespace Deltares.MStab.IO.Classic
{
    public class MStabSerializerDefinitions
    {
        private int classicMStabHandle = 0;

        public int ClassicGetHandle
        {
            get
            {
                return classicMStabHandle;
            }
        }

        public void ClassicGetVersion(ref Version aVersion)
        {
            DllGetVersion(ref aVersion);
        }

        public void ClassicDescription(ref string aDesc)
        {
            Description(ref aDesc);
        }

        public bool ClassicCreateHandle()
        {
            // On LoaderLock error here, uncheck the LoaderLock from the Managed Debugging Assistents in the Debug|Exceptions dialog
            //   Marshal.PrelinkAll(CMStabSerializerConstants.dgsSerializer);
            Load();
            classicMStabHandle = CreateHandle();
            if (classicMStabHandle != 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        public void ClassicDestroyHandle()
        {
            if (classicMStabHandle != 0)
            {
                classicMStabHandle = DestroyHandle(classicMStabHandle);
            }
            classicMStabHandle = 0;
        }

        public int ClassicGetHandleCount()
        {
            return GetActiveHandleCount();
        }

        public bool ClassicLoadMStabFile(string aMStabFile)
        {
            if (!File.Exists(aMStabFile))
            {
                throw new FileNotFoundException(aMStabFile);
            }
            return LoadMStabFile(classicMStabHandle, aMStabFile);
        }

        public bool ClassicWriteMStabFile(string aMStabFile)
        {
            return WriteMStabFile(classicMStabHandle, aMStabFile);
        }

        public bool ClassicCompairWithOtherInputFile(string aCompairFile)
        {
            return CompairWithOtherInputFile(classicMStabHandle, aCompairFile);
        }

        [DllImport(CMStabSerializerConstants.dgsSerializer)]
        private static extern void Load();

        [DllImport(CMStabSerializerConstants.dgsSerializer)]
        private static extern void DllGetVersion(ref Version aVersion);

        [DllImport(CMStabSerializerConstants.dgsSerializer)]
        private static extern void Description(ref string aDesc);

        [DllImport(CMStabSerializerConstants.dgsSerializer)]
        private static extern int CreateHandle();

        [DllImport(CMStabSerializerConstants.dgsSerializer)]
        private static extern int DestroyHandle(int aPointer);

        [DllImport(CMStabSerializerConstants.dgsSerializer)]
        private static extern int GetActiveHandleCount();

        [DllImport(CMStabSerializerConstants.dgsSerializer)]
        private static extern bool LoadMStabFile(int aPointer, string aMStabFile);

        [DllImport(CMStabSerializerConstants.dgsSerializer)]
        private static extern bool WriteMStabFile(int Pointer, string aMStabFile);

        [DllImport(CMStabSerializerConstants.dgsSerializer)]
        private static extern bool CompairWithOtherInputFile(int aPointer, string aCompairFile);

        #region Nested type: CMStabSerializerConstants

        public class CMStabSerializerConstants
        {
            public const String dgsSerializer = "DGSMStabSerializer.dll";
        }

        #endregion

        #region Nested type: Version

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 8)]
        public class Version
        {
            private int dummy;
            public string codePage;
            public string languageID;
            public string companyName;
            public string fileDescription;
            public string fileVersion;
            public string internalName;
            public string legalCopyright;
            public string legalTradeMarks;
            public string originalFilename;
            public string productName;
            public string productVersion;
            public string comments;
        }

        #endregion
    }
} ;