using SilkroadBot.Plugins.SDK.Attributes;
using SilkroadBot.Plugins.SDK.Interfaces;
using SilkroadBot.Plugins.SDK.Models;

namespace SilkroadBot.Plugin.Chat;

/// <summary>
/// Chat plugin - monitors, filters, and responds to chat messages.
/// Supports auto-reply, chat logging, and command processing.
/// </summary>
[Plugin("chat", "Chat Manager", "Monitors and manages in-game chat with auto-reply and command support")]
public class ChatPlugin : PluginBase
{
    public override string Id => "chat";
    public override string Name => "Chat Manager";
    public override Version Version => new(1, 0, 0);
    public override string Author => "SilkroadBot Team";
    public override string Description => "Chat monitoring, auto-reply, and command processing";

    private readonly List<ChatRule> _rules = new();
    private readonly List<ChatLogEntry> _chatLog = new();
    private const int MaxLogEntries = 1000;

    public override async Task InitializeAsync(IPluginContext context)
    {
        await base.InitializeAsync(context);
        await LoadRulesAsync();
    }

    public override Task StartAsync(CancellationToken ct = default)
    {
        // Subscribe to chat events through the event system
        // In a real implementation, this would hook into PacketReceived
        // and filter for chat opcodes
        Log(LogLevel.Information, "Chat monitoring started");
        return base.StartAsync(ct);
    }

    public override Task StopAsync()
    {
        Log(LogLevel.Information, "Chat monitoring stopped");
        return base.StopAsync();
    }

    /// <summary>
    /// Process an incoming chat message.
    /// </summary>
    public async Task ProcessMessage(Domain.Enums.ChatType chatType, string sender, string message)
    {
        // Log the message
        var entry = new ChatLogEntry(DateTime.UtcNow, chatType, sender, message);
        _chatLog.Add(entry);
        if (_chatLog.Count > MaxLogEntries)
            _chatLog.RemoveAt(0);

        Log(LogLevel.Debug, $"[{chatType}] {sender}: {message}");

        // Check rules
        foreach (var rule in _rules.Where(r => r.IsEnabled))
        {
            if (rule.Matches(chatType, sender, message))
            {
                await ExecuteRuleAction(rule, sender, message);
            }
        }
    }

    /// <summary>
    /// Add a chat auto-reply rule.
    /// </summary>
    public void AddRule(ChatRule rule)
    {
        _rules.Add(rule);
        Log(LogLevel.Information, $"Added chat rule: {rule.Name}");
    }

    /// <summary>
    /// Get the chat log.
    /// </summary>
    public IReadOnlyList<ChatLogEntry> GetChatLog() => _chatLog.AsReadOnly();

    private async Task ExecuteRuleAction(ChatRule rule, string sender, string message)
    {
        switch (rule.Action)
        {
            case ChatAction.Reply:
                if (!string.IsNullOrEmpty(rule.ReplyMessage))
                {
                    Log(LogLevel.Information, $"Auto-replying to {sender}: {rule.ReplyMessage}");
                    // TODO: Send chat packet with reply
                }
                break;
            case ChatAction.Log:
                Log(LogLevel.Information, $"[LOGGED] {sender}: {message}");
                break;
            case ChatAction.Block:
                Log(LogLevel.Information, $"Blocked message from {sender}");
                break;
            case ChatAction.Alert:
                Log(LogLevel.Warning, $"ALERT - {sender}: {message}");
                break;
        }
        await Task.CompletedTask;
    }

    private Task LoadRulesAsync()
    {
        // Add default rules
        _rules.Add(new ChatRule
        {
            Name = "PM Logger",
            ChatType = Domain.Enums.ChatType.PM,
            Action = ChatAction.Log,
            IsEnabled = true
        });
        _rules.Add(new ChatRule
        {
            Name = "GM Alert",
            ChatType = Domain.Enums.ChatType.GM,
            Action = ChatAction.Alert,
            IsEnabled = true
        });
        return Task.CompletedTask;
    }
}

public record ChatLogEntry(DateTime Timestamp, Domain.Enums.ChatType ChatType, string Sender, string Message);

public class ChatRule
{
    public string Name { get; set; } = string.Empty;
    public Domain.Enums.ChatType? ChatType { get; set; }
    public string? SenderFilter { get; set; }
    public string? MessageContains { get; set; }
    public ChatAction Action { get; set; } = ChatAction.Log;
    public string? ReplyMessage { get; set; }
    public bool IsEnabled { get; set; } = true;

    public bool Matches(Domain.Enums.ChatType type, string sender, string message)
    {
        if (ChatType.HasValue && ChatType.Value != type) return false;
        if (!string.IsNullOrEmpty(SenderFilter) && !sender.Contains(SenderFilter, StringComparison.OrdinalIgnoreCase)) return false;
        if (!string.IsNullOrEmpty(MessageContains) && !message.Contains(MessageContains, StringComparison.OrdinalIgnoreCase)) return false;
        return true;
    }
}

public enum ChatAction
{
    Log,
    Reply,
    Block,
    Alert,
    Command
}