using System;
using Serilog;
using XP.Common.Logging.Interfaces;

namespace XP.Common.Logging.Implementations
{
    /// <summary>
    /// Serilog日志服务实现（适配ILoggerService接口）| Serilog logger service implementation (adapts ILoggerService interface)
    /// </summary>
    public class SerilogLoggerService : ILoggerService
    {
        private ILogger _logger;

        /// <summary>
        /// 构造函数：初始化全局日志实例 | Constructor: initialize global logger instance
        /// </summary>
        public SerilogLoggerService()
        {
            _logger = Log.Logger;
        }

        /// <summary>
        /// 私有构造函数：用于模块标记 | Private constructor: for module tagging
        /// </summary>
        private SerilogLoggerService(ILogger logger)
        {
            _logger = logger ?? Log.Logger;
        }

        public void Debug(string message, params object[] args)
        {
            _logger.Debug(message, args);
        }

        public void Info(string message, params object[] args)
        {
            _logger.Information(message, args);
        }

        public void Warn(string message, params object[] args)
        {
            _logger.Warning(message, args);
        }

        public void Error(Exception ex, string message, params object[] args)
        {
            _logger.Error(ex, message, args);
        }

        public void Fatal(Exception ex, string message, params object[] args)
        {
            _logger.Fatal(ex, message, args);
        }

        /// <summary>
        /// 手动指定模块名 | Manually specify module name
        /// </summary>
        public ILoggerService ForModule(string moduleName)
        {
            if (string.IsNullOrEmpty(moduleName)) return this;
            return new SerilogLoggerService(_logger.ForContext("SourceContext", moduleName));
        }

        /// <summary>
        /// 自动使用类型全名作为模块名 | Automatically use type full name as module name
        /// </summary>
        /// <typeparam name="T">类型参数 | Type parameter</typeparam>
        public ILoggerService ForModule<T>()
        {
            var typeName = typeof(T).FullName ?? typeof(T).Name;
            return new SerilogLoggerService(_logger.ForContext("SourceContext", typeName));
        }
    }
}