using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using BrewMonster.Scripts.Chat;
using CSNetwork;

namespace CSNetwork
{
    public static class AUICommon
    {
        public const char AUICOMMON_ITEM_CODE_START = (char)0xE000;
        public const char AUICOMMON_ITEM_CODE_END = (char)0xE3FF;
        public const int AUIMANAGER_MAX_EMOTIONGROUPS = 32;

        public const int MAX_EDITBOX_ITEM_NUM =
            AUICOMMON_ITEM_CODE_END - AUICOMMON_ITEM_CODE_START + 1;

        public const int MAXNUM_CUSTOM_ITEM = 255;

        public enum EditboxItemType
        {
            enumEIEmotion = 0,
            enumEIIvtrlItem,
            enumEICoord,
            enumEIImage,
            enumEIScriptItem,
            enumEICustom,
            enumEINum = enumEICustom + MAXNUM_CUSTOM_ITEM
        }

        public static void AUI_ConvertChatString(ref string pszChat, ref char[] pszConv, bool bName)
        {
            if (string.IsNullOrEmpty(pszChat) || pszConv == null)
                return;

            int nLen = 0;

            for (int i = 0; i < pszChat.Length; i++)
            {
                char c = pszChat[i];
                if (c == '^')
                {
                    if (nLen + 1 < pszConv.Length)
                    {
                        pszConv[nLen] = '^';
                        pszConv[nLen + 1] = '^';
                        nLen += 2;
                    }
                }
                else if (c == '&')
                {
                    if (nLen + 1 < pszConv.Length)
                    {
                        pszConv[nLen] = '^';
                        pszConv[nLen + 1] = '&';
                        nLen += 2;
                    }
                }
                else
                {
                    if (nLen < pszConv.Length)
                    {
                        pszConv[nLen] = c;
                        nLen++;
                    }
                }
            }

            // kết thúc chuỗi bằng ký tự null
            if (nLen < pszConv.Length)
                pszConv[nLen] = '\0';
        }

        public static string FilterEmotionSet(string szText, int nEmotionSet)
        {
            EditBoxItemsSet itemsSet = new EditBoxItemsSet();

            string strOrgText = UnmarshalEditBoxText(szText, itemsSet);

            int nCount = itemsSet.GetItemCount();

            if (nCount == 0)
                return szText;

            var it = itemsSet.GetItemIterator();

            while (it.MoveNext())
            {
                EditBoxItemBase pItem = it.Current.Value;
                if (pItem == null) continue;

                if (pItem.GetType() == EditboxItemType.enumEIEmotion)
                {
                    int nSet = 0;
                    int nIndex = 0;

                    UnmarshalEmotionInfo(pItem.GetInfo(), ref nSet, ref nIndex);

                    pItem.SetInfo(MarshalEmotionInfo(nEmotionSet, nIndex));
                }
            }

            return MarshalEditBoxText(strOrgText, itemsSet);
        }

        public static string MarshalEmotionInfo(int nEmotionSet, int nIndex)
        {
            return nEmotionSet.ToString() + ":" + nIndex.ToString();
        }

        public static void UnmarshalEmotionInfo(string szText, ref int nEmotionSet, ref int nIndex)
        {
            if (string.IsNullOrEmpty(szText))
                return;

            var parts = szText.Split(':');

            if (parts.Length >= 2)
            {
                int.TryParse(parts[0], out nEmotionSet);
                int.TryParse(parts[1], out nIndex);
            }

            // a_ClampFloor(nEmotionSet, 0);
            if (nEmotionSet < 0)
                nEmotionSet = 0;

            // a_ClampFloor(nIndex, 0);
            if (nIndex < 0)
                nIndex = 0;

            if (nEmotionSet >= AUIMANAGER_MAX_EMOTIONGROUPS)
                nEmotionSet = 0;
        }

        public static string MarshalEditBoxText(string text, EditBoxItemsSet itemsSet)
        {
            var sb = new StringBuilder(text.Length * 2);

            int start = 0;

            for (int i = 0; i < text.Length; i++)
            {
                char ch = text[i];

                if (IsEditboxItemCode(ch))
                {
                    sb.Append(text, start, i - start + 1);

                    var item = itemsSet.GetItemByChar(ch);
                    if (item != null)
                        sb.Append(item.Serialize());

                    start = i + 1;
                }
            }

            if (start < text.Length)
                sb.Append(text, start, text.Length - start);

            return sb.ToString();
        }

        public static bool IsEditboxItemCode(char ch)
        {
            return ch >= AUICOMMON_ITEM_CODE_START && ch <= AUICOMMON_ITEM_CODE_END;
        }

        public static string UnmarshalEditBoxText(string szText, EditBoxItemsSet itemsSet)
        {
            return UnmarshalEditBoxText(
                szText,
                itemsSet,
                0,
                null,
                0,
                0,
                null,
                0,
                false,
                false,
                0
            );
        }

        public static string UnmarshalEditBoxText(
            string? sztext,
            EditBoxItemsSet itemsSet,
            int msgIndex,
            string ivtrItem,
            uint clIvtrItem,
            int itemMask,
            EditboxScriptItem[]? scriptItems,
            int scriptItemCount,
            bool underLine,
            bool sameColor,
            uint clUnderLine)
        {
            if (sztext == null)
                return "";

            var scriptInfo = new AUI_UNMARSH_SCRIPTITEM_INFO
            {
                ScriptItems = scriptItems,
                ScriptItemCount = scriptItemCount
            };

            var underlineInfo = new AUI_UNMARSH_UNDERLINE_INFO
            {
                UnderLine = underLine,
                SameColor = sameColor,
                UnderLineColor = clUnderLine
            };

            return UnmarshalEditBoxTextEx(
                sztext,
                itemsSet,
                msgIndex,
                ivtrItem,
                clIvtrItem,
                itemMask,
                scriptInfo,
                underlineInfo
            );
        }

        public static string UnmarshalEditBoxTextEx(
            string text,
            EditBoxItemsSet itemsSet,
            int msgIndex,
            string ivtrItem,
            uint clIvtrItem,
            int itemMask,
            AUI_UNMARSH_SCRIPTITEM_INFO? scriptInfo,
            AUI_UNMARSH_UNDERLINE_INFO? underlineInfo)
        {
            if (text == null)
                return "";

            int start = 0;
            int i = 0;
            int curScriptIndex = 0;

            var sb = new StringBuilder();

            while (i < text.Length)
            {
                char ch = text[i];

                if (IsEditboxItemCode(ch))
                {
                    if (i > start)
                        sb.Append(text, start, i - start);

                    i++;

                    EditBoxItemBase? item = EditBoxItemBase.Unserialize(text, ref i);
                    start = i;

                    if (item != null)
                    {
                        if ((itemMask & (1 << (int)item.GetType())) != 0)
                        {
                            char newChar = itemsSet.AppendItem(item);

                            if (newChar != '\0')
                            {
                                sb.Append(newChar);

                                item.SetMsgIndex(msgIndex);

                                if (underlineInfo != null)
                                {
                                    item.SetUnderLine(
                                        underlineInfo.UnderLine,
                                        underlineInfo.SameColor,
                                        underlineInfo.UnderLineColor);
                                }

                                switch (item.GetType())
                                {
                                    case EditboxItemType.enumEIIvtrlItem:

                                        item.SetName(ivtrItem);
                                        item.SetColor(clIvtrItem);
                                        break;

                                    case EditboxItemType.enumEIScriptItem:

                                        if (scriptInfo != null &&
                                            curScriptIndex < scriptInfo.ScriptItemCount)
                                        {
                                            var sItem = scriptInfo.ScriptItems![curScriptIndex];

                                            item.SetName(sItem.Name);
                                            item.SetColor(sItem.Color);

                                            var data = sItem.Name;
                                            if (data != null)
                                                item.SetExtraData(sItem.Data, sItem.GetDataSize());

                                            curScriptIndex++;
                                        }

                                        break;
                                }
                            }
                        }
                    }
                }
                else
                {
                    i++;
                }
            }

            if (i > start)
                sb.Append(text, start, i - start);

            return sb.ToString();
        }

        /// <summary>
        /// [Port] CECGameUIMan::FilterInvalidTags (EC_GameUIMan.cpp:6424)
        /// Lọc bỏ các tag đặc biệt không hợp lệ trong nội dung chat nhận từ server.
        /// - Emotion (biểu cảm): luôn giữ lại.
        /// - IvtrItem (link vật phẩm): giữ hoặc loại tùy bFilterItem.
        /// - Tất cả loại khác (image, coord...): luôn bị loại bỏ (thay bằng text thuần).
        /// </summary>
        public static string FilterInvalidTags(string szText, bool bFilterItem)
        {
            return AUI_FilterEditboxItem(szText, (EditBoxItemBase pItem) =>
            {
                var type = pItem.GetType();

                if (type == EditboxItemType.enumEIEmotion)
                    return false;

                if (type == EditboxItemType.enumEIIvtrlItem)
                {
                    pItem.SetInfo("");
                    return bFilterItem;
                }

                return true;
            });
        }

        /// <summary>
        /// [Port] CECGameUIMan::AUI_FilterEditboxItem (EC_GameUIMan.cpp:6477)
        /// Duyệt qua các EditboxItem trong text, filter trả về true thì item bị loại
        /// (thay bằng tên hiển thị dạng text thuần), false thì giữ nguyên.
        /// </summary>
        public static string AUI_FilterEditboxItem(string szText, Func<EditBoxItemBase, bool> filter)
        {
            EditBoxItemsSet itemsSet = new EditBoxItemsSet();
            string strText = UnmarshalEditBoxText(szText, itemsSet);

            int nCount = itemsSet.GetItemCount();
            if (nCount == 0)
                return szText;

            var it = itemsSet.GetItemIterator();
            int i = 0;
            var itemsToFilter = new List<KeyValuePair<char, string>>();

            while (it.MoveNext() && i < nCount)
            {
                EditBoxItemBase pItem = it.Current.Value;
                if (pItem != null && filter(pItem))
                {
                    itemsToFilter.Add(new KeyValuePair<char, string>(it.Current.Key, pItem.GetName()));
                }
                i++;
            }

            foreach (var kv in itemsToFilter)
            {
                strText = AUI_ReplaceEditboxItem(strText, kv.Key, kv.Value);
            }

            return MarshalEditBoxText(strText, itemsSet);
        }

        /// <summary>
        /// [Port] CECGameUIMan::AUI_ReplaceEditboxItem (EC_GameUIMan.cpp:6431)
        /// Thay thế ký tự EditboxItem code trong chuỗi bằng một đoạn text thay thế.
        /// </summary>
        public static string AUI_ReplaceEditboxItem(string szText, char cItem, string szSubText)
        {
            if (string.IsNullOrEmpty(szText) || !IsEditboxItemCode(cItem))
                return szText ?? "";

            var sb = new StringBuilder(szText.Length);
            for (int i = 0; i < szText.Length; i++)
            {
                if (szText[i] == cItem)
                    sb.Append(szSubText ?? "");
                else
                    sb.Append(szText[i]);
            }
            return sb.ToString();
        }

        // =====================================================================
        //  TMP Rich Text Converters — 将内部item格式转换为TextMeshPro标签
        //  Pipeline:  displayText + EditBoxItemsSet
        //    → ConvertEmotionsToTMP   (表情 → <sprite>)
        //    → ConvertCoordsToTMP     (坐标 → <link>)
        //    → ConvertIvtrItemsToTMP  (物品 → <link>)
        //    → StripRemainingItemCodes(清理残留)
        // =====================================================================

        /// <summary>
        /// [TMP] 将表情item替换为TMP sprite标签 — Replace emotion items with TMP animated sprite tags.
        /// Input: displayText từ UnmarshalEditBoxText (chứa PUA placeholder chars).
        /// Các item không phải Emotion được giữ nguyên cho converter tiếp theo xử lý.
        /// </summary>
        public static string ConvertEmotionsToTMP(string displayText, EditBoxItemsSet itemsSet, IEmotionSpriteMap spriteMap)
        {
            if (string.IsNullOrEmpty(displayText) || spriteMap == null)
                return displayText ?? "";

            var sb = new StringBuilder(displayText.Length);

            for (int i = 0; i < displayText.Length; i++)
            {
                char ch = displayText[i];

                if (IsEditboxItemCode(ch))
                {
                    var item = itemsSet.GetItemByChar(ch);
                    if (item != null && item.GetType() == EditboxItemType.enumEIEmotion)
                    {
                        int nSet = 0, nIndex = 0;
                        UnmarshalEmotionInfo(item.GetInfo(), ref nSet, ref nIndex);

                        if (spriteMap.TryGetSprite(nSet, nIndex, out var info))
                            sb.Append(EmotionTMPTagBuilder.BuildSpriteTag(info));
                    }
                    else
                    {
                        sb.Append(ch);
                    }
                }
                else
                {
                    sb.Append(ch);
                }
            }

            return sb.ToString();
        }

        /// <summary>
        /// [TMP] 将坐标item替换为TMP可点击link标签 — Replace coord items with TMP link tags.
        /// Output: &lt;link="coord:info"&gt;&lt;color=#RRGGBB&gt;name&lt;/color&gt;&lt;/link&gt;
        /// </summary>
        public static string ConvertCoordsToTMP(string displayText, EditBoxItemsSet itemsSet)
        {
            if (string.IsNullOrEmpty(displayText))
                return displayText ?? "";

            var sb = new StringBuilder(displayText.Length);

            for (int i = 0; i < displayText.Length; i++)
            {
                char ch = displayText[i];

                if (IsEditboxItemCode(ch))
                {
                    var item = itemsSet.GetItemByChar(ch);
                    if (item != null && item.GetType() == EditboxItemType.enumEICoord)
                    {
                        string colorHex = A3DColorToHex(item.GetColor());
                        string name = item.GetName() ?? "";
                        string info = item.GetInfo() ?? "";

                        sb.AppendFormat("<link=\"coord:{0}\"><color=#{1}>{2}</color></link>",
                            info, colorHex, name);
                    }
                    else
                    {
                        sb.Append(ch);
                    }
                }
                else
                {
                    sb.Append(ch);
                }
            }

            return sb.ToString();
        }

        /// <summary>
        /// [TMP] 将物品item替换为TMP可点击link标签 — Replace inventory item links with TMP link tags.
        /// Output: &lt;link="item:info"&gt;&lt;color=#RRGGBB&gt;&lt;u&gt;name&lt;/u&gt;&lt;/color&gt;&lt;/link&gt;
        /// </summary>
        public static string ConvertIvtrItemsToTMP(string displayText, EditBoxItemsSet itemsSet)
        {
            if (string.IsNullOrEmpty(displayText))
                return displayText ?? "";

            var sb = new StringBuilder(displayText.Length);

            for (int i = 0; i < displayText.Length; i++)
            {
                char ch = displayText[i];

                if (IsEditboxItemCode(ch))
                {
                    var item = itemsSet.GetItemByChar(ch);
                    if (item != null && item.GetType() == EditboxItemType.enumEIIvtrlItem)
                    {
                        string colorHex = A3DColorToHex(item.GetColor());
                        string name = item.GetName() ?? "";
                        string info = item.GetInfo() ?? "";

                        sb.AppendFormat("<link=\"item:{0}\"><color=#{1}><u>{2}</u></color></link>",
                            info, colorHex, name);
                    }
                    else
                    {
                        sb.Append(ch);
                    }
                }
                else
                {
                    sb.Append(ch);
                }
            }

            return sb.ToString();
        }

        /// <summary>
        /// [TMP] 移除剩余的PUA item code字符 — Safety net: strip any remaining PUA item codes
        /// not handled by the above converters (e.g. enumEIScriptItem, enumEIImage, custom types).
        /// </summary>
        public static string StripRemainingItemCodes(string displayText)
        {
            if (string.IsNullOrEmpty(displayText))
                return displayText ?? "";

            var sb = new StringBuilder(displayText.Length);

            for (int i = 0; i < displayText.Length; i++)
            {
                if (!IsEditboxItemCode(displayText[i]))
                    sb.Append(displayText[i]);
            }

            return sb.ToString();
        }

        /// <summary>
        /// A3DCOLOR (uint, ARGB format) → "RRGGBB" hex string cho TMP color tag.
        /// </summary>
        public static string A3DColorToHex(uint color)
        {
            byte r = (byte)((color >> 16) & 0xFF);
            byte g = (byte)((color >> 8) & 0xFF);
            byte b = (byte)(color & 0xFF);
            return $"{r:X2}{g:X2}{b:X2}";
        }
    }
}

public class AUI_UNMARSH_SCRIPTITEM_INFO
{
    public EditboxScriptItem[]? ScriptItems;
    public int ScriptItemCount;
}

public class AUI_UNMARSH_UNDERLINE_INFO
{
    public bool UnderLine;
    public bool SameColor;
    public uint UnderLineColor;
}

public class EditBoxItemsSet
{
    protected Dictionary<char, EditBoxItemBase> m_Items = new();
    protected int[] m_ItemsCount = new int[(int)AUICommon.EditboxItemType.enumEINum];
    protected char m_cNextItemChar;

    public EditBoxItemsSet()
    {
        Array.Clear(m_ItemsCount, 0, m_ItemsCount.Length);
        m_cNextItemChar = AUICommon.AUICOMMON_ITEM_CODE_START;
    }

    public EditBoxItemsSet(EditBoxItemsSet itemsset)
    {
        this.Assign(itemsset);
    }

    public void Assign(EditBoxItemsSet src)
    {
        m_Items.Clear();

        foreach (var kv in src.m_Items)
        {
            m_Items[kv.Key] = new EditBoxItemBase(kv.Value);
        }

        Array.Copy(src.m_ItemsCount, m_ItemsCount, m_ItemsCount.Length);
        m_cNextItemChar = src.m_cNextItemChar;
    }

    public void Release()
    {
        m_Items.Clear();

        Array.Clear(m_ItemsCount, 0, m_ItemsCount.Length);

        m_cNextItemChar = AUICommon.AUICOMMON_ITEM_CODE_START;
    }

    public int GetItemCount()
    {
        return m_Items.Count;
    }

    public Dictionary<char, EditBoxItemBase>.Enumerator GetItemIterator()
    {
        return m_Items.GetEnumerator();
    }

    public EditBoxItemBase? GetItemByChar(char ch)
    {
        if (!IsEditboxItemCode(ch))
            throw new Exception("Invalid editbox item char");

        if (m_Items.TryGetValue(ch, out var item))
            return item;

        return null;
    }

    public bool IsEditboxItemCode(char ch)
    {
        return AUICommon.IsEditboxItemCode(ch);
    }

    public int GetItemCountByType(AUICommon.EditboxItemType type)
    {
        return m_ItemsCount[(int)type];
    }

    public void DelItemByChar(char ch)
    {
        if (m_Items.TryGetValue(ch, out var item))
        {
            m_ItemsCount[(int)item.GetType()]--;
            m_Items.Remove(ch);
        }
    }

    public char AppendItem(EditBoxItemBase pItem)
    {
        if (m_Items.Count >= AUICommon.MAX_EDITBOX_ITEM_NUM)
            return '\0';

        char cur = m_cNextItemChar;

        do
        {
            if (m_Items.ContainsKey(m_cNextItemChar))
            {
                m_cNextItemChar = EditboxGetNextChar(m_cNextItemChar);
            }
            else
            {
                m_Items[m_cNextItemChar] = pItem;
                m_ItemsCount[(int)pItem.GetType()]++;

                char ret = m_cNextItemChar;
                m_cNextItemChar = EditboxGetNextChar(m_cNextItemChar);

                return ret;
            }
        } while (m_cNextItemChar != cur);

        return '\0';
    }

    public char EditboxGetNextChar(char cur)
    {
        if (cur >= AUICommon.AUICOMMON_ITEM_CODE_END)
            return AUICommon.AUICOMMON_ITEM_CODE_START;
        else
            return (char)(cur + 1);
    }

    public char AppendItem(AUICommon.EditboxItemType type, uint cl, string szName, string szInfo)
    {
        // Implement theo logic C++ gốc
        throw new NotImplementedException();
    }

    public int GetTotalExtraDataSize()
    {
        int sz = 0;

        foreach (var item in m_Items.Values)
        {
            sz += item.GetExtraDataSize();
        }

        return sz;
    }
}

public class EditBoxItemBase
{
    protected AUICommon.EditboxItemType m_type;
    protected uint m_dwColor;
    protected string m_strName = "";
    protected string m_strInfo = "";

    protected int m_nMsgIndex;
    protected int m_nImageIndex;
    protected int m_nImageFrame;
    protected float m_fImageScale;

    protected byte[]? m_pExtraData;
    protected int m_uExtraDataSize;

    protected bool m_bUnderLine;
    protected bool m_bSameColor;
    protected uint m_dwUnderLineColor;

    protected static EditBoxItemBase?[] m_mapCustomType = new EditBoxItemBase[AUICommon.MAXNUM_CUSTOM_ITEM];

    public EditBoxItemBase(AUICommon.EditboxItemType type)
    {
        m_type = type;
        m_dwColor = 0xffffffff;

        m_nMsgIndex = 0;
        m_nImageIndex = 0;
        m_nImageFrame = 0;
        m_fImageScale = 1.0f;

        m_bUnderLine = false;
        m_bSameColor = true;
        m_dwUnderLineColor = 0;

        RegisterCustomType(type);
    }

    public EditBoxItemBase(EditBoxItemBase src)
    {
        Assign(src);
    }

    public bool UnserializeContent(string text, ref int index)
    {
        int szNext;
        int szEnd = text.IndexOf("<", index);

        if (szEnd == -1)
            return false;

        if (m_type == AUICommon.EditboxItemType.enumEICoord)
        {
            szNext = szEnd + 1;

            if (!TryParseInt(text, szNext, out int color))
                return false;

            SetColor((uint)color);

            szEnd = text.IndexOf("><", szNext);
            if (szEnd == -1) return false;

            szNext = szEnd + 2;

            if (!TryParseInt(text, szNext, out int underline))
                return false;

            m_bUnderLine = underline != 0;

            szEnd = text.IndexOf("><", szNext);
            if (szEnd == -1) return false;

            szNext = szEnd + 2;

            if (!TryParseInt(text, szNext, out int underlineColor))
                return false;

            m_dwUnderLineColor = (uint)underlineColor;

            szEnd = text.IndexOf("><", szNext);
            if (szEnd == -1) return false;

            m_bSameColor = (m_dwUnderLineColor == m_dwColor);

            szNext = szEnd + 2;

            szEnd = text.IndexOf("><", szNext);
            if (szEnd == -1) return false;

            SetName(text.Substring(szNext, szEnd - szNext));

            szEnd += 1;
        }
        else if (m_type == AUICommon.EditboxItemType.enumEIImage)
        {
            szNext = szEnd + 1;

            if (!TryParseUInt(text, szNext, out uint color))
                return false;

            SetColor(color);

            szEnd = text.IndexOf("><", szNext);
            if (szEnd == -1) return false;

            szNext = szEnd + 2;

            if (!TryParseInt(text, szNext, out int imageIndex))
                return false;

            SetImageIndex(imageIndex);

            szEnd = text.IndexOf("><", szNext);
            if (szEnd == -1) return false;

            szNext = szEnd + 2;

            if (!TryParseInt(text, szNext, out int frame))
                return false;

            SetImageFrame(frame);

            szEnd = text.IndexOf("><", szNext);
            if (szEnd == -1) return false;

            szNext = szEnd + 2;

            if (!float.TryParse(text.Substring(szNext), out float f))
                return false;

            SetImageScale(f);

            szEnd = text.IndexOf("><", szNext);
            if (szEnd == -1) return false;

            szEnd += 1;
        }
        else if (m_type == AUICommon.EditboxItemType.enumEIEmotion)
        {
            SetName("W");
        }

        szNext = szEnd + 1;

        szEnd = text.IndexOf('>', szNext);

        if (szEnd == -1)
            return false;

        SetInfo(text.Substring(szNext, szEnd - szNext));

        index = szEnd + 1;

        return true;
    }

    private bool TryParseInt(string text, int start, out int value)
    {
        int end = start;

        while (end < text.Length && char.IsDigit(text[end]))
            end++;

        return int.TryParse(text.Substring(start, end - start), out value);
    }

    private bool TryParseUInt(string text, int start, out uint value)
    {
        int end = start;

        while (end < text.Length && char.IsDigit(text[end]))
            end++;

        return uint.TryParse(text.Substring(start, end - start), out value);
    }

    protected void RegisterCustomType(AUICommon.EditboxItemType type)
    {
        if (type >= AUICommon.EditboxItemType.enumEICustom &&
            type < AUICommon.EditboxItemType.enumEINum)
        {
            int index = (int)type - (int)AUICommon.EditboxItemType.enumEICustom;

            if (m_mapCustomType[index] == null)
                m_mapCustomType[index] = this;
        }
    }

    protected virtual EditBoxItemBase Create()
    {
        return new EditBoxItemBase(m_type);
    }

    protected static EditBoxItemBase? GetCustomItemFromType(AUICommon.EditboxItemType type)
    {
        if (type >= AUICommon.EditboxItemType.enumEICustom &&
            type < AUICommon.EditboxItemType.enumEINum)
        {
            return m_mapCustomType[(int)type - (int)AUICommon.EditboxItemType.enumEICustom];
        }

        return null;
    }

    public uint GetColor() => m_dwColor;
    public AUICommon.EditboxItemType GetType() => m_type;
    public string GetName() => m_strName;
    public string GetInfo() => m_strInfo;
    public int GetMsgIndex() => m_nMsgIndex;
    public int GetImageIndex() => m_nImageIndex;
    public int GetImageFrame() => m_nImageFrame;
    public float GetImageScale() => m_fImageScale;
    public bool GetUnderLine() => m_bUnderLine;
    public bool GetSameColor() => m_bSameColor;
    public uint GetUnderLineColor() => m_dwUnderLineColor;

    public void SetColor(uint cl) => m_dwColor = cl;
    public void SetName(string name) => m_strName = name;
    public void SetInfo(string info) => m_strInfo = info;
    public void SetMsgIndex(int n) => m_nMsgIndex = n;
    public void SetImageIndex(int n) => m_nImageIndex = n;
    public void SetImageFrame(int n) => m_nImageFrame = n;
    public void SetImageScale(float f) => m_fImageScale = f;

    public byte[]? GetExtraData() => m_pExtraData;
    public int GetExtraDataSize() => m_uExtraDataSize;

    public void SetUnderLine(bool underline, bool sameColor = true, uint underlineColor = 0)
    {
        m_bUnderLine = underline;
        m_bSameColor = sameColor;
        m_dwUnderLineColor = underlineColor;
    }

    public void SetExtraData(byte[] data, int size)
    {
        m_pExtraData = new byte[size];
        Array.Copy(data, 0, m_pExtraData, 0, size);
        m_uExtraDataSize = size;
    }

    /// <summary>
    /// [Port] EditBoxItemBase::Serialize — AUICommon.cpp — wire payload sau mỗi ký tự placeholder PUA.
    /// [Port] EditBoxItemBase::Serialize — AUICommon.cpp — wire payload after each PUA placeholder character.
    /// </summary>
    public virtual string Serialize()
    {
        if (m_type == AUICommon.EditboxItemType.enumEICoord)
        {
            uint ul = m_bSameColor ? m_dwColor : m_dwUnderLineColor;
            return $"<{(int)m_type}><{m_dwColor}><{(m_bUnderLine ? 1 : 0)}><{ul}><{m_strName}><{m_strInfo}>";
        }

        if (m_type == AUICommon.EditboxItemType.enumEIImage)
        {
            return $"<{(int)m_type}><{m_dwColor}><{m_nImageIndex}><{m_nImageFrame}><{m_fImageScale.ToString(System.Globalization.CultureInfo.InvariantCulture)}><{m_strInfo}>";
        }

        return $"<{(int)m_type}><{m_strInfo}>";
    }

    public static EditBoxItemBase Unserialize(string text, ref int index)
    {
        int start = text.IndexOf('<', index);
        if (start == -1)
            return null;

        start++;

        int endType = text.IndexOf('>', start);
        if (endType == -1)
            return null;

        string typeStr = text.Substring(start, endType - start);

        if (!int.TryParse(typeStr, out int type))
            return null;

        if (type < 0 || type >= (int)AUICommon.EditboxItemType.enumEINum)
            return null;

        index = endType + 1;

        EditBoxItemBase pItem = EditBoxItemBase.GetCustomItemFromType((AUICommon.EditboxItemType)type);

        EditBoxItemBase pItemNew;

        if (pItem == null)
        {
            pItemNew = new EditBoxItemBase((AUICommon.EditboxItemType)type);
        }
        else
        {
            pItemNew = pItem.Create();
        }

        if (!pItemNew.UnserializeContent(text, ref index))
        {
            return null;
        }

        return pItemNew;
    }

    public void Assign(EditBoxItemBase src)
    {
        m_type = src.m_type;
        m_dwColor = src.m_dwColor;
        m_strName = src.m_strName;
        m_strInfo = src.m_strInfo;

        m_nMsgIndex = src.m_nMsgIndex;
        m_nImageIndex = src.m_nImageIndex;
        m_nImageFrame = src.m_nImageFrame;
        m_fImageScale = src.m_fImageScale;

        if (src.m_pExtraData != null)
        {
            SetExtraData(src.m_pExtraData, src.m_uExtraDataSize);
        }
        else
        {
            m_pExtraData = null;
            m_uExtraDataSize = 0;
        }

        RegisterCustomType(m_type);
    }
}

public class EditboxScriptItem
{
    public string Name { get; set; } = "";
    public uint Color { get; set; }
    public byte[]? Data { get; private set; }

    public void SetData(byte[] data)
    {
        Data = data.ToArray(); // deep copy
    }

    public int GetDataSize()
    {
        return Data?.Length ?? 0;
    }
}

/// <summary>
/// 表情sprite信息 — Describes how one emotion maps to a TMP_SpriteAsset sprite (or animation).
/// </summary>
public struct EmotionSpriteInfo
{
    /// <summary>
    /// Tên TMP_SpriteAsset cần dùng cho emoji này. Rỗng/null = dùng Sprite Asset mặc định trên text component.
    /// TMP_SpriteAsset name to target for this emoji. Empty/null = use text component default sprite asset.
    /// </summary>
    public string SpriteAssetName;

    /// <summary>TMP sprite index (frame đầu tiên nếu có animation).</summary>
    public int SpriteIndex;

    /// <summary>True nếu emotion này là icon động (nhiều frame).</summary>
    public bool IsAnimated;

    /// <summary>Index frame cuối (inclusive). Chỉ dùng khi IsAnimated = true.</summary>
    public int AnimEndFrame;

    /// <summary>Frames per second. Chỉ dùng khi IsAnimated = true.</summary>
    public int AnimFPS;

    /// <summary>
    /// Nếu true: dùng &lt;sprite name="SpriteName"&gt; (sprite phải có trong Sprite Asset gán trên TMP).
    /// If true: emit &lt;sprite name="SpriteName"&gt; (sprite must exist on the TextMeshPro sprite asset).
    /// </summary>
    public bool UseSpriteName;

    /// <summary>Tên sub-sprite Unity (vd. cell_0012) — khớp TMP Sprite Asset.</summary>
    public string SpriteName;
}

/// <summary>
/// Interface ánh xạ (emotionSet, emotionIndex) → TMP sprite info.
/// Implement interface này khi đã có TMP_SpriteAsset (atlas emotion icons).
///
/// Ví dụ sử dụng:
/// <code>
/// public class MyEmotionMap : IEmotionSpriteMap
/// {
///     public bool TryGetSprite(int set, int index, out EmotionSpriteInfo info)
///     {
///         int spriteStart = set * 30 + index * 4; // 30 emotions/set, 4 frames mỗi emotion
///         info = new EmotionSpriteInfo
///         {
///             SpriteIndex  = spriteStart,
///             IsAnimated   = true,
///             AnimEndFrame = spriteStart + 3,
///             AnimFPS      = 10
///         };
///         return true;
///     }
/// }
/// </code>
/// </summary>
public interface IEmotionSpriteMap
{
    /// <summary>
    /// Tra bảng (emotionSet, emotionIndex) → EmotionSpriteInfo.
    /// Trả về false nếu không tìm thấy (emotion sẽ bị bỏ qua khi render).
    /// </summary>
    bool TryGetSprite(int emotionSet, int emotionIndex, out EmotionSpriteInfo info);
}