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

namespace SilkroadBot.Plugin.Logger;

/// <summary>
/// Logger plugin - comprehensive logging of all game events to file.
/// Supports multiple log formats, rotation, and filtering.
/// </summary>
[Plugin("logger", "Event Logger", "Logs all game events to file with rotation and filtering")]
public class LoggerPlugin : PluginBase
{
    public override string Id => "logger";
    public override string Name => "Event Logger";
    public override Version Version => new(1, 0, 0);
    public override string Author => "SilkroadBot Team";
    public override string Description => "Comprehensive game event logging with file rotation";

    private StreamWriter? _logWriter;
    private string _logDirectory = "logs";
    private LogFormat _format = LogFormat.Text;
    private readonly object _writeLock = new();
    private long _totalEntries;

    public override async Task InitializeAsync(IPluginContext context)
    {
        await base.InitializeAsync(context);
        
        _logDirectory = context.Configuration.Get("logDirectory", "logs");
        _format = Enum.Parse<LogFormat>(context.Configuration.Get("format", "Text"));
        
        if (!Directory.Exists(_logDirectory))
            Directory.CreateDirectory(_logDirectory);
    }

    public override Task StartAsync(CancellationToken ct = default)
    {
        var fileName = $"bot_{DateTime.Now:yyyyMMdd_HHmmss}.log";
        var filePath = Path.Combine(_logDirectory, fileName);
        _logWriter = new StreamWriter(filePath, append: true) { AutoFlush = true };
        
        WriteLog("INFO", "Logger", "Logging started");
        return base.StartAsync(ct);
    }

    public override Task StopAsync()
    {
        WriteLog("INFO", "Logger", $"Logging stopped. Total entries: {_totalEntries}");
        _logWriter?.Dispose();
        _logWriter = null;
        return base.StopAsync();
    }

    /// <summary>
    /// Log a game event.
    /// </summary>
    public void LogEvent(string category, string message, LogLevel level = LogLevel.Information)
    {
        WriteLog(level.ToString().ToUpper()[..4], category, message);
    }

    /// <summary>
    /// Log a packet.
    /// </summary>
    public void LogPacket(string direction, ushort opcode, int size, byte[]? data = null)
    {
        var hex = data != null ? BitConverter.ToString(data[..Math.Min(32, data.Length)]).Replace("-", " ") : "";
        WriteLog("PKT", direction, $"0x{opcode:X4} [{size}B] {hex}");
    }

    private void WriteLog(string level, string category, string message)
    {
        if (_logWriter == null) return;

        lock (_writeLock)
        {
            var timestamp = DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss.fff");
            var line = _format switch
            {
                LogFormat.Text => $"[{timestamp}] [{level}] [{category}] {message}",
                LogFormat.Csv => $"\"{timestamp}\",\"{level}\",\"{category}\",\"{message.Replace("\"", "\"\"")}\"",
                LogFormat.Json => System.Text.Json.JsonSerializer.Serialize(new { timestamp, level, category, message }),
                _ => $"[{timestamp}] [{level}] {message}"
            };
            
            _logWriter.WriteLine(line);
            _totalEntries++;
        }
    }

    public override void Dispose()
    {
        _logWriter?.Dispose();
        base.Dispose();
    }
}

public enum LogFormat
{
    Text,
    Csv,
    Json
}