using StgSharp.Geometries;
using System;
using System.IO;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace StgSharp
{
    internal enum LogType
    {
        Error,
        Warning,
        Info,
        InfoError,
        InfoWarning,
    }

    internal static unsafe partial class internalIO
    {

        internal const string SSGC_libname =
            "StgSharpGraphic";

        internal const string SSG_errorlog =
            "SSG_errorlog.log";

        internal static void InternalWriteLog(string beforeTime, string logLine, LogType logType)
        {
            if (!File.Exists(internalIO.SSG_errorlog))
            {
                FileStream stream = File.Create(internalIO.SSG_errorlog);
                stream.Close();
            }

            using (StreamWriter logStream = File.AppendText(SSG_errorlog))
            {
                logStream.WriteLine(beforeTime);
                logStream.WriteLine($"{logType}\t@\t{DateTime.Now.ToString("o")}");
                logStream.WriteLine(logLine);
            }
        }

        internal static void InternalWriteLog(string logLine, LogType logType)
        {
            if (!File.Exists(internalIO.SSG_errorlog))
            {
                FileStream stream = File.Create(internalIO.SSG_errorlog);
                stream.Close();
            }

            using (StreamWriter logStream = File.AppendText(SSG_errorlog))
            {
                logStream.WriteLine($"{logType}\t@\t{DateTime.Now.ToString("o")}");

                logStream.WriteLine(logLine);
            }
        }

        internal static void InternalAppendLog(string log)
        {
            if (!File.Exists(internalIO.SSG_errorlog))
            {
                FileStream stream = File.Create(internalIO.SSG_errorlog);
                stream.Close();
            }

            using (StreamWriter logStream = File.AppendText(SSG_errorlog))
            {
                logStream.WriteLine(log);
            }
        }

    }
}