using Microsoft.Extensions.Configuration;
using Serilog;
using System;
using System.IO;

namespace CoreAgent.Infrastructure.Logging
{
    public static class ApplicationLogger
    {
        private static readonly object _lock = new object();
        private static bool _isInitialized;

        public static void Initialize(IConfiguration configuration)
        {
            ArgumentNullException.ThrowIfNull(configuration, nameof(configuration));

            if (_isInitialized)
            {
                return;
            }

            lock (_lock)
            {
                if (_isInitialized)
                {
                    return;
                }

                try
                {
                    // 确保日志目录存在
                    var logDirectory = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "logs");
                    Directory.CreateDirectory(logDirectory);

                    // 从配置文件初始化
                    Log.Logger = new LoggerConfiguration()
                        .ReadFrom.Configuration(configuration)
                        .CreateLogger();

                    _isInitialized = true;
                    Log.Information("Logger initialized successfully");
                }
                catch (Exception ex)
                {
                    // 如果初始化失败，创建一个基本的控制台日志记录器
                    Log.Logger = new LoggerConfiguration()
                        .MinimumLevel.Debug()
                        .WriteTo.Console()
                        .CreateLogger();

                    _isInitialized = true;
                    Log.Error(ex, "Failed to initialize logger with full configuration");
                }
            }
        }

        public static void EnsureInitialized()
        {
            if (!_isInitialized)
            {
                throw new InvalidOperationException("Logger has not been initialized. Call Initialize() first.");
            }
        }
    }
}