Initial commit.

Wino.Core/Http/MicrosoftTokenProvider.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Kiota.Abstractions.Authentication;
+using Wino.Core.Domain.Entities;
+using Wino.Core.Domain.Interfaces;
+
+namespace Wino.Core.Http
+{
+    public class MicrosoftTokenProvider : IAccessTokenProvider
+    {
+        private readonly MailAccount _account;
+        private readonly IAuthenticator _authenticator;
+
+        public MicrosoftTokenProvider(MailAccount account, IAuthenticator authenticator)
+        {
+            _account = account;
+            _authenticator = authenticator;
+        }
+
+        public AllowedHostsValidator AllowedHostsValidator { get; }
+
+        public async Task<string> GetAuthorizationTokenAsync(Uri uri,
+                                                             Dictionary<string, object> additionalAuthenticationContext = null,
+                                                             CancellationToken cancellationToken = default)
+        {
+            var token = await _authenticator.GetTokenAsync(_account).ConfigureAwait(false);
+
+            return token?.AccessToken;
+        }
+    }
+}