using APT.Infrastructure.Core;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Text;

namespace APT.Infrastructure.EF
{
	 public class EFDbContextLoggerProvider : ILoggerProvider
	{
		public ILogger CreateLogger(string categoryName) => new EFDbContextLogger(categoryName);
		public void Dispose() { }
	}
	public class EFDbContextLogger : ILogger
	{
		private readonly string categoryName;

		public EFDbContextLogger(string categoryName) => this.categoryName = categoryName;

		public bool IsEnabled(LogLevel logLevel) => true;

		public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func<TState, Exception, string> formatter)
		{
			//ef core执行数据库查询时的categoryName为Microsoft.EntityFrameworkCore.Database.Command,日志级别为Information
			if (categoryName == "Microsoft.EntityFrameworkCore.Database.Command")
			{ 
				var logContent = formatter(state, exception);
				LoggerManager.GetLogger("SQLLog").
					Info(logContent + System.Environment.NewLine +
						(exception != null ? ("Except:" + exception.Message) : string.Empty)); 
			}
		}

		public IDisposable BeginScope<TState>(TState state) => null;
	}
}