//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
//     file="Platform.cs"
//     Project: StgSharp
//     AuthorGroup: Nitload Space
//     Copyright (c) Nitload Space. All rights reserved.
//     
//     Permission is hereby granted, free of charge, to any person 
//     obtaining a copy of this software and associated documentation 
//     files (the “Software”), to deal in the Software without restriction, 
//     including without limitation the rights to use, copy, modify, merge,
//     publish, distribute, sublicense, and/or sell copies of the Software, 
//     and to permit persons to whom the Software is furnished to do so, 
//     subject to the following conditions:
//     
//     The above copyright notice and 
//     this permission notice shall be included in all copies 
//     or substantial portions of the Software.
//     
//     THE SOFTWARE IS PROVIDED “AS IS”, 
//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//     
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
// using StgSharp.Envitronment;
// using StgSharp.Envitronment.Win32;
// using StgSharp.Graphics;
// using StgSharp.Math;

using StgSharp.Internal;
using StgSharp.Internal.Intrinsic;

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

        /// <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;

        private static bool vsyncActivated;

        private static uint markCount = 0;
        internal static GraphicAPI API = default;

        public static unsafe void Init()
        {
            mainTimeProvider = new StgSharpTime();
            MainTimeProvider.StartProvidingTime();
            InternalIO.glfwInit();
            InternalIO.InternalAppendLog( "\n\n\n" );
            InternalIO.InternalWriteLog(
                $"Program {Assembly.GetEntryAssembly()!.FullName} Started.",
                LogType.Info );
            _mainThreadID = Environment.CurrentManagedThreadId;


            Dialogue.LoadDialogue();
            if( Dialogue.NeedShowWhenStartup ) {
                Dialogue.CreateDialogueProcessIfNotExist();
            }

            InternalIO.InitIntrinsicContext();
        }

        public static void LogError( Exception ex )
        {
            InternalIO.InternalWriteLog( ex.Message, LogType.Error );
        }

        public static void LogInfo( string log )
        {
            InternalIO.InternalWriteLog( log, LogType.Info );
        }

        public static void LogWarning( string log )
        {
            InternalIO.InternalWriteLog( log, LogType.Warning );
        }

        public static void LogWarning( Exception notVerySeriesException )
        {
            InternalIO.InternalWriteLog(
                notVerySeriesException.Message, LogType.Warning );
        }

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

        public static void Terminate( int exitCode )
        {
            MainTimeProvider.StopProvidingTime();
            InternalIO.glfwTerminate();
            Environment.Exit( exitCode );
        }

        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 );
            }
        }

        /// <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 InvalidCastException(
                    "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 InvalidCastException(
                    "Failed to convert api, the function pointer is zero." );
            }
            try {
                return Marshal.GetDelegateForFunctionPointer( funcPtr, T );
            }
            catch( Exception ) {
                throw;
            }
        }

    }
}