Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
using ExtremeInsiders.Entities;
using ExtremeInsiders.Services;
using ExtremeInsiders.Areas;
using ExtremeInsiders.Helpers;
using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Rewrite;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.IdentityModel.Tokens;
using Newtonsoft.Json;

namespace ExtremeInsiders
{
  public class Startup
  {
    public Startup(IConfiguration configuration)
    {
      var builder = new ConfigurationBuilder().AddJsonFile("config.json").AddConfiguration(configuration);

      Configuration = builder.Build();
    }

    private IConfiguration Configuration { get; }


    // This method gets called by the runtime. Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
      services.AddCors();
      services.AddHttpContextAccessor();
      services.AddControllersWithViews()
        .AddNewtonsoftJson(options =>
        {
          options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;
          options.SerializerSettings.NullValueHandling = NullValueHandling.Ignore;
        });

      services.AddDbContext<Data.ApplicationContext>(options =>
      {
        var connect = Configuration.GetConnectionString("Default");
        options.UseLazyLoadingProxies();
        options.UseNpgsql(connect);
      });
      
      services.AddCustomAuthenticationService(Configuration);
      services.AddCustomAuthorizationService();
      services.AddHelperServices();
      services.AddSocialAuthService();
      services.AddSwaggerGen();
    }

    // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
      if (env.IsDevelopment())
      {
        app.UseDeveloperExceptionPage();
      }
      else
      {
        app.UseExceptionHandler("/Home/Error");
        app.UseHsts();
      }
      
      app.UseSwagger();

      //app.UseHttpsRedirection();
      app.UseStaticFiles();

      // Enable middleware to serve swagger-ui (HTML, JS, CSS, etc.),
      // specifying the Swagger JSON endpoint.
      app.UseSwaggerUI(c =>
      {
        c.SwaggerEndpoint("/swagger/v1/swagger.json", "Extreme Insiders API");
      });
      
      app.UseAuthentication();
      app.UseRouting();
      app.UseCors(c => c.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader());

      app.UseAuthorization();
      
      app.UseEndpoints(endpoints =>
      {
        endpoints.MapControllers();

        endpoints.MapControllerRoute(
          name: "Admin",
          pattern: "{area:exists}/{controller=Home}/{action=Index}/{id?}");
      });
    }
  }
}