using StgSharp.Geometries;
using StgSharp.Graphics;
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";

        static InternalIO()
        {
            GLtype.Add(typeof(float), GLconst.FLOAT);
            GLtype.Add(typeof(int), GLconst.INT);
            GLtype.Add(typeof(uint), GLconst.UNSIGNED_INT);
            GLtype.Add(typeof(short), GLconst.SHORT);
            GLtype.Add(typeof(ushort), GLconst.UNSIGNED_SHORT);
            GLtype.Add(typeof(sbyte), GLconst.BYTE);
            GLtype.Add(typeof(byte), GLconst.UNSIGNED_BYTE);
        }

        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);
            }
        }

    }
}