using EntrustSettle.Common;
using EntrustSettle.Common.LogHelper;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Newtonsoft.Json;
using System;
using System.Threading.Tasks;

namespace EntrustSettle.Extensions.Middlewares
{
	/// <summary>
	/// 中间件
	/// 记录IP请求数据
	/// </summary>
	public class IpLogMiddleware
	{
		/// <summary>
		/// 
		/// </summary>
		private readonly RequestDelegate _next;

		private readonly IWebHostEnvironment _environment;

		/// <summary>
		/// 
		/// </summary>
		/// <param name="next"></param>
		public IpLogMiddleware(RequestDelegate next, IWebHostEnvironment environment)
		{
			_next = next;
			_environment = environment;
		}

		public async Task InvokeAsync(HttpContext context)
		{
			if (AppSettings.app("Middleware", "IPLog", "Enabled").ObjToBool())
			{
				// 过滤，只有接口
				if (context.Request.Path.Value.Contains("api"))
				{
					context.Request.EnableBuffering();


					// 存储请求数据
					var request = context.Request;

					var requestInfo = JsonConvert.SerializeObject(new RequestInfo()
					{
						Ip = GetClientIP(context),
						Url = request.Path.ObjToString().TrimEnd('/').ToLower(),
						Datetime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"),
						Date = DateTime.Now.ToString("yyyy-MM-dd"),
						Week = GetWeek(),
					});

					if (!string.IsNullOrEmpty(requestInfo))
					{
						// 自定义log输出
						Parallel.For(0, 1, e =>
						{
							//LogLock.OutSql2Log("RequestIpInfoLog", new string[] { requestInfo + "," }, false);
							LogLock.OutLogAOP("RequestIpInfoLog", context.TraceIdentifier,
								new string[] {requestInfo.GetType().ToString(), requestInfo}, false);
						});
						
						request.Body.Position = 0;
					}

					await _next(context);
				}
				else
				{
					await _next(context);
				}
			}
			else
			{
				await _next(context);
			}
		}

		private string GetWeek()
		{
			string week = string.Empty;
			switch (DateTime.Now.DayOfWeek)
			{
				case DayOfWeek.Monday:
					week = "周一";
					break;
				case DayOfWeek.Tuesday:
					week = "周二";
					break;
				case DayOfWeek.Wednesday:
					week = "周三";
					break;
				case DayOfWeek.Thursday:
					week = "周四";
					break;
				case DayOfWeek.Friday:
					week = "周五";
					break;
				case DayOfWeek.Saturday:
					week = "周六";
					break;
				case DayOfWeek.Sunday:
					week = "周日";
					break;
				default:
					week = "N/A";
					break;
			}

			return week;
		}

		public static string GetClientIP(HttpContext context)
		{
			var ip = context.Request.Headers["X-Forwarded-For"].ObjToString();
			if (string.IsNullOrEmpty(ip))
			{
				ip = context.Connection.RemoteIpAddress.ObjToString();
			}

			return ip;
		}
	}
}