using System;
using Serilog;
using System.IO;
using Serilog.Events;
using Serilog.Enrichers;
using Serilog.Formatting.Compact;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Configuration;

namespace SHJX.Service.Common.Logging
{
    public static class LogFactory
    {
        public static IConfiguration Configuration { get; } = new ConfigurationBuilder()
        .SetBasePath(Directory.GetCurrentDirectory())//设置基础路径
        .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)//添加配置文件
        .AddEnvironmentVariables()//添加环境变量
        .Build();

        /// <summary>
        /// 初始化LogFactory的静态成员.
        /// </summary>
        static LogFactory()
        {
            //存储日志文件的格式
            string SerilogOutputTemplate = "{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz} - {ThreadId} - [{Level:u3}] - [{SourceContext}] ----- {Message:lj}{NewLine}{Exception}";
            //存储日志文件的路径
            static string LogFilePath(string LogEvent) => $@"{AppContext.BaseDirectory}Logs\{LogEvent}\log.log";
            Log.Logger = new LoggerConfiguration().ReadFrom.Configuration(Configuration)
            .MinimumLevel.Debug()
            .Enrich.FromLogContext()//使用Serilog.Context.LogContext中的属性丰富日志事件。
            .Enrich.With<ThreadIdEnricher>()
            .WriteTo.Console(new RenderedCompactJsonFormatter())
            .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level.Equals(LogEventLevel.Debug)).WriteTo.File(LogFilePath("Debug"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate))
            .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level.Equals(LogEventLevel.Information)).WriteTo.File(LogFilePath("Information"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate))
            .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level.Equals(LogEventLevel.Warning)).WriteTo.File(LogFilePath("Warning"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate))
            .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level.Equals(LogEventLevel.Error)).WriteTo.File(LogFilePath("Error"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate))
            .WriteTo.Logger(lg => lg.Filter.ByIncludingOnly(p => p.Level.Equals(LogEventLevel.Fatal)).WriteTo.File(LogFilePath("Fatal"), rollingInterval: RollingInterval.Day, outputTemplate: SerilogOutputTemplate))
            .CreateLogger();
            BuildLogger = (type) =>
            {
                Microsoft.Extensions.Logging.ILogger logger = new LoggerFactory().AddSerilog(Log.Logger).CreateLogger(type.FullName);
                return logger;
            };
        }

        /// <summary>
        /// <para>获取或设置已配置记录器的日志生成器。</para>
        /// <para>应该调用它来返回一个新的日志实例。</para>
        /// </summary>
        public static Func<Type, Microsoft.Extensions.Logging.ILogger> BuildLogger { get; set; }
    }
}