using System;
using Serilog;
using Serilog.Events;
using XP.Common.Configs;
using XP.Common.Logging.ViewModels;

namespace XP.Common.Logging
{
    /// <summary>
    /// Serilog全局初始化工具（应用启动时调用一次）
    /// </summary>
    public static class SerilogInitializer
    {
        /// <summary>
        /// 初始化Serilog日志
        /// </summary>
        public static void Initialize(SerilogConfig config)
        {
            if (config == null) throw new ArgumentNullException(nameof(config));

            // 确保日志目录存在
            if (!System.IO.Directory.Exists(config.LogPath))
                System.IO.Directory.CreateDirectory(config.LogPath);

            // 解析日志级别
            if (!Enum.TryParse<LogEventLevel>(config.MinimumLevel, true, out var minLevel))
                minLevel = LogEventLevel.Information;

            // 解析文件分割规则
            if (!Enum.TryParse<RollingInterval>(config.RollingInterval, true, out var rollingInterval))
                rollingInterval = RollingInterval.Day;

            // 构建Serilog配置
            var loggerConfig = new LoggerConfiguration()
                .MinimumLevel.Is(minLevel)
                .Enrich.FromLogContext() // 启用上下文（模块标记）
                .WriteTo.File(
                    path: System.IO.Path.Combine(config.LogPath, "app_.log"), // 最终文件名：app_20260307.log
                    rollingInterval: rollingInterval,
                    fileSizeLimitBytes: config.FileSizeLimitMB * 1024 * 1024,
                    retainedFileCountLimit: config.RetainedFileCountLimit,
                    outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff} [{Level:u3}] [{SourceContext}] {Message:lj}{NewLine}{Exception}"
                );

            // 调试环境输出到控制台
            if (config.EnableConsole)
                loggerConfig.WriteTo.Console(
                    outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss.fff} [{Level:u3}] [{SourceContext}] {Message:lj}{NewLine}{Exception}");

            // 注册实时日志查看器 Sink（接收所有级别日志）| Register real-time log viewer sink (receive all levels)
            loggerConfig.WriteTo.Sink(RealTimeLogSink.Instance, Serilog.Events.LogEventLevel.Verbose);

            // 全局初始化
            Log.Logger = loggerConfig.CreateLogger();
        }
    }
}