// Logger.cs
using System;
using System.IO;

namespace FreelancerListServer
{
    public class Logger
    {
        private readonly string _logDirectory;
        private string _currentLogFile;
        private DateTime _nextRotation;
        private readonly object _lock = new object();

        public Logger(string logDirectory = "logs")
        {
            _logDirectory = logDirectory;
            Directory.CreateDirectory(_logDirectory);
            UpdateLogFileName();
        }

        private void UpdateLogFileName()
        {
            var now = DateTime.Now;
            _currentLogFile = Path.Combine(_logDirectory, $"server_{now:yyyyMMdd_HH}.log");
            _nextRotation = now.AddHours(1).Date.AddHours(now.Hour + 1);
        }

        public void Log(string message)
        {
            lock (_lock)
            {
                if (DateTime.Now >= _nextRotation)
                {
                    UpdateLogFileName();
                }

                string logEntry = $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff}] {message}";
                Console.WriteLine(logEntry);
                File.AppendAllText(_currentLogFile, logEntry + Environment.NewLine);
            }
        }
    }
}