using System;
using System.Text;
using System.Text.RegularExpressions;
using Dalamud.Data;
using Dalamud.Game.Gui;
using Dalamud.Game.Text;
using Dalamud.Game.Text.SeStringHandling;
using Lumina.Excel.GeneratedSheets;
using Pal.Client.Configuration;
using Pal.Client.Floors;

namespace Pal.Client.DependencyInjection;

internal sealed class ChatService : IDisposable
{
    private readonly ChatGui _chatGui;
    private readonly TerritoryState _territoryState;
    private readonly IPalacePalConfiguration _configuration;
    private readonly DataManager _dataManager;
    private readonly LocalizedChatMessages _localizedChatMessages;

    public ChatService(ChatGui chatGui, TerritoryState territoryState, IPalacePalConfiguration configuration,
        DataManager dataManager)
    {
        _chatGui = chatGui;
        _territoryState = territoryState;
        _configuration = configuration;
        _dataManager = dataManager;

        _localizedChatMessages = LoadLanguageStrings();

        _chatGui.ChatMessage += OnChatMessage;
    }

    public void Dispose()
        => _chatGui.ChatMessage -= OnChatMessage;

    private void OnChatMessage(XivChatType type, uint senderId, ref SeString sender, ref SeString seMessage,
        ref bool isHandled)
    {
        if (_configuration.FirstUse)
            return;

        if (type != (XivChatType)2105)
            return;

        string message = seMessage.ToString();
        if (_localizedChatMessages.FloorChanged.IsMatch(message))
        {
            _territoryState.PomanderOfSight = PomanderState.Inactive;

            if (_territoryState.PomanderOfIntuition == PomanderState.FoundOnCurrentFloor)
                _territoryState.PomanderOfIntuition = PomanderState.Inactive;
        }
        else if (message.EndsWith(_localizedChatMessages.MapRevealed))
        {
            _territoryState.PomanderOfSight = PomanderState.Active;
        }
        else if (message.EndsWith(_localizedChatMessages.AllTrapsRemoved))
        {
            _territoryState.PomanderOfSight = PomanderState.PomanderOfSafetyUsed;
        }
        else if (message.EndsWith(_localizedChatMessages.HoardNotOnCurrentFloor) ||
                 message.EndsWith(_localizedChatMessages.HoardOnCurrentFloor))
        {
            // There is no functional difference between these - if you don't open the marked coffer,
            // going to higher floors will keep the pomander active.
            _territoryState.PomanderOfIntuition = PomanderState.Active;
        }
        else if (message.EndsWith(_localizedChatMessages.HoardCofferOpened))
        {
            _territoryState.PomanderOfIntuition = PomanderState.FoundOnCurrentFloor;
        }
    }

    private LocalizedChatMessages LoadLanguageStrings()
    {
        return new LocalizedChatMessages
        {
            MapRevealed = GetLocalizedString(7256),
            AllTrapsRemoved = GetLocalizedString(7255),
            HoardOnCurrentFloor = GetLocalizedString(7272),
            HoardNotOnCurrentFloor = GetLocalizedString(7273),
            HoardCofferOpened = GetLocalizedString(7274),
            FloorChanged =
                new Regex("^" + GetLocalizedString(7270, true).Replace("\u0002 \u0003\ufffd\u0002\u0003", @"(\d+)") +
                          "$"),
        };
    }

    private string GetLocalizedString(uint id, bool asRawData = false)
    {
        var text = _dataManager.GetExcelSheet<LogMessage>()?.GetRow(id)?.Text;
        if (text == null)
            return "Unknown";

        if (asRawData)
            return Encoding.UTF8.GetString(text.RawData);
        else
            return text.ToString();
    }

    private sealed class LocalizedChatMessages
    {
        public string MapRevealed { get; init; } = "???"; //"The map for this floor has been revealed!";
        public string AllTrapsRemoved { get; init; } = "???"; // "All the traps on this floor have disappeared!";
        public string HoardOnCurrentFloor { get; init; } = "???"; // "You sense the Accursed Hoard calling you...";

        public string HoardNotOnCurrentFloor { get; init; } =
            "???"; // "You do not sense the call of the Accursed Hoard on this floor...";

        public string HoardCofferOpened { get; init; } = "???"; // "You discover a piece of the Accursed Hoard!";

        public Regex FloorChanged { get; init; } =
            new(@"This isn't a game message, but will be replaced"); // new Regex(@"^Floor (\d+)$");
    }
}