using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace DellMonitorControl;

public static class DebugLogger
{
    private static readonly List<string> _logs = new();
    private static readonly object _lock = new();
    private static readonly string _logFilePath;

    static DebugLogger()
    {
        var tempPath = Path.Combine(Path.GetTempPath(), "CMM");
        Directory.CreateDirectory(tempPath);
        _logFilePath = Path.Combine(tempPath, "debug.log");
    }

    public static void Log(string message)
    {
        var entry = $"[{DateTime.Now:HH:mm:ss.fff}] {message}";
        lock (_lock)
        {
            _logs.Add(entry);
            try
            {
                File.AppendAllText(_logFilePath, entry + Environment.NewLine);
            }
            catch { }
        }
    }

    public static void LogError(string message, Exception? ex = null)
    {
        var entry = ex != null
            ? $"[{DateTime.Now:HH:mm:ss.fff}] ERROR: {message} - {ex.GetType().Name}: {ex.Message}"
            : $"[{DateTime.Now:HH:mm:ss.fff}] ERROR: {message}";
        lock (_lock)
        {
            _logs.Add(entry);
            if (ex != null)
                _logs.Add($"    Stack: {ex.StackTrace}");
            try
            {
                File.AppendAllText(_logFilePath, entry + Environment.NewLine);
                if (ex != null)
                    File.AppendAllText(_logFilePath, $"    Stack: {ex.StackTrace}" + Environment.NewLine);
            }
            catch { }
        }
    }

    public static string GetLogs()
    {
        lock (_lock)
        {
            return string.Join(Environment.NewLine, _logs);
        }
    }

    public static void Clear()
    {
        lock (_lock)
        {
            _logs.Clear();
            try
            {
                File.WriteAllText(_logFilePath, "");
            }
            catch { }
        }
    }

    public static string LogFilePath => _logFilePath;
}