using System;
using System.Runtime.InteropServices;
using CSNetwork.GPDataType;

namespace BrewMonster.UI
{
    // Define and Macro from EC_GameUIMan.h
    // 定义与宏
    public static class EC_GameUIMan_Constants
    {
        // public const int LAYOUTDATA_VERSION = 15;
// #define CECGAMEUIMAN_MAX_MSGS		200
// #define CECGAMEUIMAN_MAX_BROKEN		8
// #define CECGAMEUIMAN_MAX_TASKHINT	6
        
        public const int CECGAMEUIMAN_MAX_MARKS = 5;
        public const int CECGAMEUIMAN_MARK_NAME_LEN = 8;
        public const int CECGAMEUIMAN_MAX_GROUPS = 10;
        public const int CECGAMEUIMAN_MAX_CHATS = 10;
        public const int CECGAMEUIMAN_MAX_QSHOPITEMS = 8;
        public const int CECGAMEUIMAN_MAX_FASHIONSHOPITEMS = 6;

        /// <summary>
        /// C++ sizeof(USER_LAYOUT) with default packing (MSVC pack 8).
        /// 与 C++ sizeof(USER_LAYOUT) 一致（MSVC 默认 pack 8）。
        /// </summary>
        public const int USER_LAYOUT_SIZE = 344;
    }

    // SAVE_MARK: saved mark (NPC, position, name)
    // 保存的标记（NPC、位置、名称）
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public struct SAVE_MARK
    {
        public int nNPC;
        public A3DVECTOR3 vecPos;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = EC_GameUIMan_Constants.CECGAMEUIMAN_MARK_NAME_LEN + 1)]
        public ushort[] szName; // ACHAR in C++ (wchar_t) → ushort[]
    }

    // USER_LAYOUT_Flat: flat struct for binary serialization (total size 344 to match C++ sizeof).
    // 扁平结构体，用于二进制序列化（总大小 344，与 C++ sizeof 一致）。
    // Field order matches C++ EC_GameUIMan.h. Pack=1 + explicit padding for exact 344-byte output.
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public struct USER_LAYOUT_Flat
    {
        public sbyte nVersion;
        public sbyte nMapMode;
        [MarshalAs(UnmanagedType.U1)] public bool bQuickbar1Mode;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)] public byte[] bChecked1;
        [MarshalAs(UnmanagedType.U1)] public bool bQuickbar2Mode;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)] public byte[] bChecked2;
        [MarshalAs(UnmanagedType.U1)] public bool bQuickbarPetMode;
        public int nChatWinSize;
        public int nCurChatColor;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_MARKS)]
        public SAVE_MARK[] a_Mark;
        [MarshalAs(UnmanagedType.U1)] public bool bOnlineNotify;
        [MarshalAs(UnmanagedType.U1)] public bool bAutoReply;
        [MarshalAs(UnmanagedType.U1)] public bool bSaveHistory;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_GROUPS)]
        public int[] idGroup;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_GROUPS)]
        public uint[] clrGroup;
        [MarshalAs(UnmanagedType.U1)] public bool bTraceAll;
        [MarshalAs(UnmanagedType.U1)] public bool bQuickbarShowAll1;
        [MarshalAs(UnmanagedType.U1)] public bool bQuickbarShowAll2;
        public int nQuickbarCurPanel1, nQuickbarCurPanel2, nQuickbarDisplayPanels1, nQuickbarDisplayPanels2;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_MARKS)]
        public short[] a_MarkMapID;
        public uint dwTraceMask;
        public byte ucCurSystemModuleSC;
        [MarshalAs(UnmanagedType.U1)] public bool bSystemModuleQuickBarMini;
        [MarshalAs(UnmanagedType.U1)] public bool bMenuMode;
        [MarshalAs(UnmanagedType.U1)] public bool bShowCompareDesc;
        [MarshalAs(UnmanagedType.U1)] public bool bShowLowHP;
        [MarshalAs(UnmanagedType.U1)] public bool bShowTargetOfTarget;
        // Padding to reach C++ sizeof(USER_LAYOUT)=344 (C# Pack=1 yields 313, +31 padding)
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 31)]
        public byte[] _padding;
    }

    // TASK_HINT: task hint data
    // 任务提示数据
    // TODO: ACString strHint is not inline in C++ (pointer); when reading from C++ binary skip ptr after dwTime and fill strHint separately.
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public struct TASK_HINT
    {
        public uint dwTime; // DWORD → uint
        public string strHint;
    }

    // USER_LAYOUT_6: user layout version 6
    // 用户布局版本 6
    // Base for layout versions: common fields (v6 and v7 differ only by bChecked1 size).
    // 布局版本基类：公共字段（v6 与 v7 仅 bChecked1 长度不同）
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_Base
    {
        public sbyte nVersion; // __int8 → sbyte
        public sbyte nMapMode;
        [MarshalAs(UnmanagedType.U1)]
        public bool bQuickbar1Mode;
        [MarshalAs(UnmanagedType.U1)]
        public bool bQuickbar2Mode;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
        public byte[] bChecked2;
        [MarshalAs(UnmanagedType.U1)]
        public bool bQuickbarPetMode;
        public int nChatWinSize;
        public int nCurChatColor;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_MARKS)]
        public SAVE_MARK[] a_Mark;
        [MarshalAs(UnmanagedType.U1)]
        public bool bOnlineNotify;
        [MarshalAs(UnmanagedType.U1)]
        public bool bAutoReply;
        [MarshalAs(UnmanagedType.U1)]
        public bool bSaveHistory;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_GROUPS)]
        public int[] idGroup;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_GROUPS)]
        public uint[] clrGroup; // A3DCOLOR (DWORD) → uint
    }

    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_6 : USER_LAYOUT_Base
    {
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
        public byte[] bChecked1;
    }

    // USER_LAYOUT_7: user layout version 7 (bChecked1[5]); base for v8–current
    // 用户布局版本 7（bChecked1[5]）；v8 至当前版本的基类
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_7 : USER_LAYOUT_Base
    {
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)]
        public byte[] bChecked1;
    }

    // USER_LAYOUT_8: extends USER_LAYOUT_7
    // 用户布局版本 8
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_8 : USER_LAYOUT_7
    {
        [MarshalAs(UnmanagedType.U1)]
        public bool bTraceAll;
        [MarshalAs(UnmanagedType.U1)]
        public bool bQuickbarShowAll1;
        [MarshalAs(UnmanagedType.U1)]
        public bool bQuickbarShowAll2;
        public int nQuickbarCurPanel1;
        public int nQuickbarCurPanel2;
        public int nQuickbarDisplayPanels1;
        public int nQuickbarDisplayPanels2;
    }

    // USER_LAYOUT_9: extends USER_LAYOUT_8
    // 用户布局版本 9
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_9 : USER_LAYOUT_8
    {
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_MARKS)]
        public short[] a_MarkMapID; // init to 1 per element in C++; caller must init in C#
    }

    // USER_LAYOUT_10: extends USER_LAYOUT_9
    // 用户布局版本 10
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_10 : USER_LAYOUT_9
    {
        public uint dwTraceMask; // DWORD → uint; init 0
    }

    // USER_LAYOUT_11: extends USER_LAYOUT_10
    // 用户布局版本 11
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_11 : USER_LAYOUT_10
    {
        public byte ucCurSystemModuleSC; // unsigned char → byte; init 0
    }

    // USER_LAYOUT_12: extends USER_LAYOUT_11
    // 用户布局版本 12
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_12 : USER_LAYOUT_11
    {
        [MarshalAs(UnmanagedType.U1)]
        public bool bSystemModuleQuickBarMini; // init false
    }

    // USER_LAYOUT_13: extends USER_LAYOUT_12
    // 用户布局版本 13
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_13 : USER_LAYOUT_12
    {
        [MarshalAs(UnmanagedType.U1)]
        public bool bMenuMode; // init false
    }

    // USER_LAYOUT_14: extends USER_LAYOUT_13
    // 用户布局版本 14
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT_14 : USER_LAYOUT_13
    {
        [MarshalAs(UnmanagedType.U1)]
        public bool bShowCompareDesc; // init true
        [MarshalAs(UnmanagedType.U1)]
        public bool bShowLowHP;       // init true
    }

    // USER_LAYOUT: current user layout (extends USER_LAYOUT_14)
    // 当前用户布局
    [StructLayout(LayoutKind.Sequential, Pack = 1)]
    public class USER_LAYOUT : USER_LAYOUT_14
    {
        [MarshalAs(UnmanagedType.U1)]
        public bool bShowTargetOfTarget; // init true

        /// <summary>
        /// Serializes this USER_LAYOUT to a byte array (344 bytes to match C++ sizeof(USER_LAYOUT)).
        /// 序列化为字节数组（344 字节，与 C++ sizeof(USER_LAYOUT) 一致）。
        /// </summary>
        public byte[] ToBytes()
        {
            USER_LAYOUT_Flat flat = ToFlat();
            byte[] bytes = new byte[EC_GameUIMan_Constants.USER_LAYOUT_SIZE];
            IntPtr ptr = Marshal.AllocHGlobal(EC_GameUIMan_Constants.USER_LAYOUT_SIZE);
            try
            {
                Marshal.StructureToPtr(flat, ptr, false);
                Marshal.Copy(ptr, bytes, 0, EC_GameUIMan_Constants.USER_LAYOUT_SIZE);
                return bytes;
            }
            finally
            {
                Marshal.FreeHGlobal(ptr);
            }
        }

        /// <summary>Converts this USER_LAYOUT to USER_LAYOUT_Flat for binary serialization.</summary>
        public USER_LAYOUT_Flat ToFlat()
        {
            var flat = new USER_LAYOUT_Flat
            {
                nVersion = nVersion,
                nMapMode = nMapMode,
                bQuickbar1Mode = bQuickbar1Mode,
                bChecked1 = bChecked1 ?? new byte[5],
                bQuickbar2Mode = bQuickbar2Mode,
                bChecked2 = bChecked2 ?? new byte[3],
                bQuickbarPetMode = bQuickbarPetMode,
                nChatWinSize = nChatWinSize,
                nCurChatColor = nCurChatColor,
                a_Mark = a_Mark ?? new SAVE_MARK[EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_MARKS],
                bOnlineNotify = bOnlineNotify,
                bAutoReply = bAutoReply,
                bSaveHistory = bSaveHistory,
                idGroup = idGroup ?? new int[EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_GROUPS],
                clrGroup = clrGroup ?? new uint[EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_GROUPS],
                bTraceAll = bTraceAll,
                bQuickbarShowAll1 = bQuickbarShowAll1,
                bQuickbarShowAll2 = bQuickbarShowAll2,
                nQuickbarCurPanel1 = nQuickbarCurPanel1,
                nQuickbarCurPanel2 = nQuickbarCurPanel2,
                nQuickbarDisplayPanels1 = nQuickbarDisplayPanels1,
                nQuickbarDisplayPanels2 = nQuickbarDisplayPanels2,
                a_MarkMapID = a_MarkMapID ?? new short[EC_GameUIMan_Constants.CECGAMEUIMAN_MAX_MARKS],
                dwTraceMask = dwTraceMask,
                ucCurSystemModuleSC = ucCurSystemModuleSC,
                bSystemModuleQuickBarMini = bSystemModuleQuickBarMini,
                bMenuMode = bMenuMode,
                bShowCompareDesc = bShowCompareDesc,
                bShowLowHP = bShowLowHP,
                bShowTargetOfTarget = bShowTargetOfTarget,
                _padding = new byte[31]
            };
            // Ensure a_Mark elements have szName initialized
            for (int i = 0; i < flat.a_Mark.Length; i++)
            {
                if (flat.a_Mark[i].szName == null)
                    flat.a_Mark[i].szName = new ushort[EC_GameUIMan_Constants.CECGAMEUIMAN_MARK_NAME_LEN + 1];
            }
            return flat;
        }
    }
}