using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;

namespace Bowin.Common.Utility
{
    public class HttpHelper
    {

        public static IHttpContextAccessor Accessor;

        public static IWebHostEnvironment WebHostEnvironment { get; set; }
        public static IServiceCollection ServiceCollection;
        public static HttpContext Current
        {
            get
            {
                return Accessor.HttpContext;
            }
        }


        public static T GetService<T>() where T : class
        {
          
            if (Accessor.HttpContext != null)
            {
                return Accessor.HttpContext.RequestServices.GetService<T>();
            }
            else
            {
                return ServiceCollection.BuildServiceProvider().GetService<T>();
            }
        }
        public static IEnumerable<T> GetServices<T>()
        {
            if (Accessor.HttpContext != null)
            {
                return Accessor.HttpContext.RequestServices.GetServices<T>();
            }
            else
            {
                return ServiceCollection.BuildServiceProvider().GetServices<T>();
            }
        }
        public static object GetService(Type serviceType)
        {

            if (Accessor.HttpContext != null)
            {
                return Accessor.HttpContext.RequestServices.GetService(serviceType);
            }
            else
            {
                return ServiceCollection.BuildServiceProvider().GetService(serviceType);
            }
        }
        public static IEnumerable<object> GetServices(Type serviceType)
        {

            if (Accessor.HttpContext != null)
            {
                return Accessor.HttpContext.RequestServices.GetServices(serviceType);
            }
            else
            {
                return ServiceCollection.BuildServiceProvider().GetServices(serviceType);
            }
        }

        public static string MapPath(string url)
        {
            return Path.Combine(WebHostEnvironment.WebRootPath, url.TrimStart("~").Replace('/', Path.DirectorySeparatorChar).TrimStart(Path.DirectorySeparatorChar));
        }
        public static string GetUserIp()
        {
            var ip = Current.Request.Headers["X-Forwarded-For"].FirstOrDefault();
            if (string.IsNullOrEmpty(ip))
            {
                ip = Current.Connection.RemoteIpAddress.ToString();
            }
            return ip;
        }
    }
}