// using StgSharp.Envitronment;
// using StgSharp.Envitronment.Win32;
// using StgSharp.Graphics;
// using StgSharp.Math;

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

#if Windows

// using Windows.Win32.UI.WindowsAndMessaging;
// using Windows.Win32;
// using Windows.Win32.Foundation;
// using Windows.Win32.Graphics.OpenGL;
// using Windows.Win32.Graphics.Gdi;
// using Windows.Win32.UI;

#endif

namespace StgSharp
{
    internal enum GraphicAPI : byte
    {
        GL,
        DX,
        VK
    }

    public static partial class StgSharp
    {
        internal static GraphicAPI API = default;
        private static bool vsyncActivated;
        private static uint markCount = 0;

        public static void Mark(bool needConsole)
        {
            markCount++;
            if (needConsole)
            {
                Console.WriteLine(markCount);
            }
        }

        /// <summary>
        /// Version of current StgSharp platform.
        /// Main version represent in hundred's digit,
        /// and sub version represent in ten's digit.
        /// </summary>
        public const long version = 430;

        /// <summary>
        /// Write a log message to log file, and mark the level of this message.
        /// </summary>
        /// <param name="message">A string contains information of how current evironment runs.</param>
        /// <param name="logType">The severity of current message.</param>
        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static void WriteLog(string message, LogType logType)
        {
            InternalIO.InternalWriteLog(message, logType);
        }

        internal static TDele ConvertAPI<TDele>(IntPtr funcPtr)
        {
            if (funcPtr == IntPtr.Zero)
            {
                throw new Exception("Failed to convert api, the function pointer is zero.");
            }
            try
            {
                return Marshal.GetDelegateForFunctionPointer<TDele>(funcPtr);
            }
            catch (Exception)
            {
                throw;
            }
        }

        internal static Delegate ConvertAPI(IntPtr funcPtr, Type T)
        {
            if (funcPtr == IntPtr.Zero)
            {
                throw new Exception("Failed to convert api, the function pointer is zero.");
            }
            try
            {
                return Marshal.GetDelegateForFunctionPointer(funcPtr, T);
            }
            catch (Exception)
            {
                throw;
            }
        }

        public static void Track(
            object target,
            string message,
            bool isConsole,
            [CallerFilePath] string filePath = "",
            [CallerMemberName] string callerName = "",
            [CallerLineNumber] int lineNumber = 0
            )
        {
            Type t = target.GetType();
            string log = $"Tracked object: {nameof(target)}\t\tType:{t.Name}\n";
            FieldInfo[] fieldInfo = t.GetFields(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
            log += "|\tFieldName\t|\tFieldType\t|\tFieldValue\t|\n";
            foreach (FieldInfo field in fieldInfo)
            {
                log += $"|{field.Name}\t\t|{field.FieldType}\t\t|{field.GetValue(target)}\t\t|\n";
            }
            log += $"Tracking at:\n{filePath}\t{callerName}\tline {lineNumber}\n";
            log += $"Additional information:\n{message}\n";
            if (isConsole)
            {
                Console.WriteLine(log);
            }
            else
            {
                InternalIO.InternalWriteLog(log, LogType.Info);
            }
        }
    }
}