feat: GitHub OAuth mechanism implemented

WotBlitzStatisticsPro.GraphQl/Mutation/AuthenticationMutation.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Threading.Tasks;
+using HotChocolate.Types;
+using Microsoft.Extensions.Logging;
+using WotBlitzStatisticsPro.GraphQl.GitHubOauth;
+
+
+namespace WotBlitzStatisticsPro.GraphQl.Mutation
+{
+    [ExtendObjectType(Name = "Mutation")]
+    public class AuthenticationMutation
+    {
+        private readonly IGitHubOauthService _guGitHubOauthService;
+        private readonly ILogger<AuthenticationMutation> _logger;
+
+        public AuthenticationMutation(
+            IGitHubOauthService guGitHubOauthService,
+            ILogger<AuthenticationMutation> logger)
+        {
+            _guGitHubOauthService = guGitHubOauthService;
+            _logger = logger;
+        }
+
+        /// <summary>
+        /// This method accepts GitHub oauth code, and returns JWT token with GutHub user as claim
+        /// </summary>
+        /// <param name="oauthCode">OAuth code can be generated by this URL https://github.com/login/oauth/authorize?client_id={yourClientId}</param>
+        public async Task<string> GitHubAuthenticate(string oauthCode)
+        {
+            try
+            {
+                var user = await _guGitHubOauthService.GetGitHubUser(oauthCode);
+                if (user == null)
+                {
+                    throw new ApplicationException($"Can not find GitHub user by code {oauthCode}");
+                }
+                return _guGitHubOauthService.GenerateToken(user);
+            }
+            catch (Exception e)
+            {
+                _logger.LogError(e,"Authentication fails");
+                throw;
+            }
+        }
+
+    }
+}

WotBlitzStatisticsPro.GraphQl/Mutation/WotBlitzStatisticsMutation.cs

@@ -1,4 +1,6 @@
 using System.Threading.Tasks;
+using HotChocolate.AspNetCore.Authorization;
+using HotChocolate.Types;
 using WotBlitzStatisticsPro.Common.Model;
 using WotBlitzStatisticsPro.Logic;
 
@@ -7,6 +9,7 @@ namespace WotBlitzStatisticsPro.GraphQl.Mutation
     /// <summary>
     /// WotBlitzStatistics Mutations
     /// </summary>
+    [ExtendObjectType(Name = "Mutation")]
     public class WotBlitzStatisticsMutation
     {
         private readonly IWargamingDictionaries _wargamingDictionaries;
@@ -24,6 +27,7 @@ namespace WotBlitzStatisticsPro.GraphQl.Mutation
         /// </summary>
         /// <param name="updateDictionariesRequest">Determines what dictionaries should be updated.</param>
         /// <returns>Information about what was updated.</returns>
+        [Authorize(Policy = "GithubMbogaOnly")]
         public Task<UpdateDictionariesResponseItem[]> UpdateDictionaries(
             UpdateDictionariesRequest updateDictionariesRequest)
         {