using System.Collections.Generic;
using BrewMonster.Network;
using CSNetwork.GPDataType;

namespace BrewMonster.UI
{
    /// <summary>
    /// Code gốc bên C++
    /// Class này làm về UI nên trong C# được chia ra
    /// trong ChatInputHandler và ChatPanelUI
    /// </summary>
    public static class DlgChat
    {
        private static readonly Dictionary<ChatChannel, string> ChannelColors = new Dictionary<ChatChannel, string>
        {
            { ChatChannel.GP_CHAT_LOCAL, "FFFFFF" },
            { ChatChannel.GP_CHAT_FARCRY, "FFE400" },
            { ChatChannel.GP_CHAT_TEAM, "00FF00" },
            { ChatChannel.GP_CHAT_FACTION, "00FFFC" },
            { ChatChannel.GP_CHAT_WHISPER, "0065FE" },
            { ChatChannel.GP_CHAT_DAMAGE, "C0C0C0" },
            { ChatChannel.GP_CHAT_FIGHT, "FF7E00" },
            { ChatChannel.GP_CHAT_TRADE, "FF742E" },
            { ChatChannel.GP_CHAT_SYSTEM, "BED293" },
            { ChatChannel.GP_CHAT_BROADCAST, "FF3600" },
            { ChatChannel.GP_CHAT_MISC, "9AA6FF" },
            { ChatChannel.GP_CHAT_INSTANCE, "EC0D3C" },
            { ChatChannel.GP_CHAT_SUPERFARCRY, "ff9b3e" },
            { ChatChannel.GP_CHAT_BATTLE, "FFFFFF" },
            { ChatChannel.GP_CHAT_COUNTRY, "FFFFFF" }
        };

        public const string NPC_COLOR           = "C8FF64";
        public const string KING_COLOR          = "8A2BE2";
        // [Port] C++: CDlgChat::m_pszWhisperFriendColor = "^FF4AB0"
        // Màu hồng cho whisper từ/tới bạn bè trong danh sách
        public const string WHISPER_FRIEND_COLOR = "FF4AB0";

        /// <summary>
        /// Formats a message with TextMeshPro color tags based on the channel.
        /// </summary>
        public static string FormatMessage(string message, ChatChannel channel)
        {
            if (string.IsNullOrEmpty(message)) return string.Empty;
            if (ChannelColors.TryGetValue(channel, out string hexColor))
                return $"<color=#{hexColor}>{message}</color>";
            return message;
        }

        /// <summary>
        /// Formats a message with a specific hex color tag.
        /// </summary>
        public static string FormatWithColor(string text, string hexColor)
        {
            if (string.IsNullOrEmpty(text)) return string.Empty;
            return $"<color=#{hexColor}>{text}</color>";
        }

        /// <summary>
        /// Returns the hex color string for a given channel.
        /// Mirrors CDlgChat::GetChatColor in C++.
        /// </summary>
        /// <param name="channel">Chat channel</param>
        /// <param name="idPlayer">Sender/recipient role ID — used to check friend status for GP_CHAT_WHISPER</param>
        public static string GetChatColor(ChatChannel channel, int idPlayer = -1)
        {
            // [Port] C++: DlgChat.cpp dòng 142-157
            // if (iChannel == GP_CHAT_WHISPER && pFriendMan->GetFriendByID(idPlayer))
            //     return m_pszWhisperFriendColor;  // "^FF4AB0" (hồng)
            if (channel == ChatChannel.GP_CHAT_WHISPER && idPlayer > 0)
            {
                var host = EC_Game.GetGameRun()?.GetHostPlayer();
                var friendMan = host?.GetFriendMan();
                if (friendMan != null && friendMan.GetFriendByID(idPlayer).HasValue)
                    return WHISPER_FRIEND_COLOR;
            }

            if (ChannelColors.TryGetValue(channel, out string hexColor))
                return hexColor;
            return "FFFFFF";
        }

        /// <summary>
        /// Returns a channel icon/image prefix string.
        /// Currently returns empty — placeholder for future TMP sprite implementation.
        /// Mirrors GetChatChannelImage() in C++.
        /// </summary>
        public static string GetChatChannelImage(ChatChannel channel)
        {
            // TODO: return TMP sprite tag per channel when assets are ready
            // e.g. return $"<sprite name=\"chat_icon_{channel}\">";
            return string.Empty;
        }
    }
}