using Microsoft.IdentityModel.Clients.ActiveDirectory;

 using Newtonsoft.Json;

 using Newtonsoft.Json.Linq;

 using System;

 using System.Collections.Generic;

 using System.Collections.Specialized;

 using System.IO;

 using System.Linq;

 using System.Net;

 using System.Net.Http;

 using System.Net.Http.Headers;

 using System.Text;

 using System.Threading.Tasks;

 namespace AadGraphApi

 {

     class Program

     {

         static void Main(string[] args)

         {

             //Demo below AAD graph api

             //1. List All users in AAD

             //2. Check user existence

             //3. Get AppRoleAssignment

             //4. implement the appRoleAssignment

             //Test MoonCake Azure

             //Task task = CnTest();

             //Test Global Azure

             Task task = CnTest();

             var x = task;

             Console.WriteLine("**--------done-------**");

             Console.ReadLine();

         }

         // using Http Request to get Token

         private static async Task<string> CnAppAuthenticationAsync()

         {

             // Using in Mooncake Azure

             // Constants

             var tenant = "";

             var resource = "https://graph.chinacloudapi.cn";

             //var resource = "https://management.core.chinacloudapi.cn/";

             var clientID = "";

             var secret = "";

             // Ceremony

             var authority = $"https://login.chinacloudapi.cn/{tenant}";

             var authContext = new AuthenticationContext(authority);

             var credentials = new ClientCredential(clientID, secret);

             var authResult = await authContext.AcquireTokenAsync(resource, credentials);

             return authResult.AccessToken;

         }

         private static async Task CnTest()

         {

             var token = await CnAppAuthenticationAsync();

             using (var client = new HttpClient())

             {

                 //

                 //be careful for the specific parameters in the URI . replace it with yours

                 //

                 client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);

                 var apiUriUserExist = new Uri("https://graph.chinacloudapi.cn/{yourtenantid}/users/**.partner.onmschina.cn?api-version=1.6");

                 var apiUriListAllUser = new Uri("https://graph.chinacloudapi.cn/**.partner.onmschina.cn/users?api-version=1.6");

                 var apiUriGetAppRoleAssignment = new Uri("https://graph.chinacloudapi.cn/**。partner.onmschina.cn/users/**.partner.onmschina.cn/appRoleAssignments?api-version=1.6");

                 //var userExist = await DoesUserExistsAsync(client, apiUriUserExist);

                 //Console.WriteLine($"Does user exists? {userExist}");

                 var userLists = await ListAllUsers(client, apiUriListAllUser);

                 Console.WriteLine(userLists);

                 /*

                 var appRoleList = await GetAppRoleAssignment(client, apiUriGetAppRoleAssignment);

                 Console.WriteLine(appRoleList);

                 //post request for AAD appRoleAssignment

                 await CnPostAppRoleAssignment(client);

                 //

                 */

             }

         }

         private static async Task<bool> DoesUserExistsAsync(HttpClient client, Uri apiUri)

         {

             try

             {

                 var payload = await client.GetStringAsync(apiUri);

                 return true;

             }

             catch (HttpRequestException)

             {

                 return false;

             }

         }

         private static async Task<string> ListAllUsers(HttpClient client, Uri apiUri)

         {

             try

             {

                 var payload = await client.GetStringAsync(apiUri);

                 return payload;

             }

             catch (HttpRequestException ex)

             {

                 return ex.ToString();

             }

         }

     }

 }