using System;

using System.Collections.Generic;

using System.Linq;

using System.Threading.Tasks;

using IdentityServer4.Test;

using IdentityServer4.Models;

using IdentityServer4;

namespace MvcCookieAuthSample

{

    public class Config

    {

        public static IEnumerable<ApiResource> GetApiResources() {

            return new List<ApiResource>() {

                 new ApiResource("api1","api DisplayName")

            };

        }

        public static IEnumerable<Client> GetClients()

        {

            return new List<Client>() {

                 new Client(){

                     ClientId="mvc",

                      AllowedGrantTypes= GrantTypes.Implicit,

                      ClientSecrets= new List<Secret>(){

                          new Secret("secret".Sha256())

                      },

                      RedirectUris = {"http://localhost:5001/signin-oidc" },

                      PostLogoutRedirectUris = { "http://localhost/signout-callback-oidc"},

                      RequireConsent=false,

                      AllowedScopes={

                         IdentityServerConstants.StandardScopes.Profile,

                          IdentityServerConstants.StandardScopes.OpenId

                      }

                 }

            };

        }

        public static IEnumerable<IdentityResource> GetIdentityResources()

        {

            return new List<IdentityResource>() {

                new IdentityResources.OpenId(),

                new IdentityResources.Email(),

                new IdentityResources.Profile()

            };

        }

        public static List<TestUser> GetTestUsers()

        {

            return new List<TestUser>() {

                 new TestUser(){

                       SubjectId="oa001",

                       Username="qinzb",

                       Password=""

                 }

            };

        }

    }

}

 public void ConfigureServices(IServiceCollection services)

        {

            services.AddIdentityServer()

            .AddDeveloperSigningCredential()

            .AddInMemoryApiResources(Config.GetApiResources())

            .AddInMemoryClients(Config.GetClients())

            .AddInMemoryIdentityResources(Config.GetIdentityResources())

            .AddTestUsers(Config.GetTestUsers())  ;

            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env)

        {

            app.UseIdentityServer(); //主要加了这段代码启用Identity4

            app.UseMvc(routes =>

            {

                routes.MapRoute(

                    name: "default",

                    template: "{controller=Home}/{action=Index}/{id?}");

            });

        }

        private TestUserStore _testUserStore;

        public AccountController(TestUserStore testUserStore)

        {

            _testUserStore = testUserStore;

        }

        public IActionResult Login(string returnUrl = null)

        {

            ViewData["returnUrl"] = returnUrl;

            return View();

        }

        [HttpPost]

        public async Task<IActionResult> Login(ViewModel.LoginViewModel loginModel, string returnUrl = null)

        {

            var findUser = _testUserStore.FindByUsername(loginModel.UserName);

            //  string returnUrl = Request.Form["returnUrl"];

            if (findUser == null)

            {

                ModelState.AddModelError(nameof(loginModel.UserName), "用户不存在");

            }

            else

            {

                if (_testUserStore.ValidateCredentials(loginModel.UserName, loginModel.Password))

                {

                    var profiles = new AuthenticationProperties()

                    {

                        IsPersistent = true,

                        ExpiresUtc = System.DateTimeOffset.UtcNow.Add(TimeSpan.FromMinutes())

                    };

                    await Microsoft.AspNetCore.Http.AuthenticationManagerExtensions.SignInAsync(HttpContext, findUser.SubjectId, findUser.Username, profiles);

                    return string.IsNullOrEmpty(returnUrl) ? Redirect("/home/index") : Redirect(returnUrl);

                }

                ModelState.AddModelError(nameof(loginModel.Password), "密码不正确");

            }

            return View();

        }