using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using NLog;
using NLog.Web.AspNetCore;

namespace WebAPIBase.Utils
{
    public class CustomErrorMiddleware : ICustomErrorMiddleware
    {
        private readonly RequestDelegate next;
        private IHostingEnvironment environment;

        //Nlog构造方法注入
        private readonly Microsoft.Extensions.Logging.ILogger<CustomErrorMiddleware> _logger;
        public CustomErrorMiddleware(RequestDelegate next, IHostingEnvironment environment, Microsoft.Extensions.Logging.ILogger<CustomErrorMiddleware> logger)
        {
            _logger = logger;
            this.next = next;
            this.environment = environment;
        }

        public async Task Invoke(HttpContext context)
        {
            try
            {
                await next.Invoke(context);
                var features = context.Features;
            }
            catch (Exception e)
            {
                await HandleException(context, e);
            }
        }

        private async Task HandleException(HttpContext context, Exception ex)
        {

            //_logger.Log();

            await context.Response.WriteAsync(ex.Message + "\r\n" + ex.StackTrace);
        }

        public void LogError(Exception ex)
        {

            // _logger.Log();
        }
    }
}