Added authorization mechanism

2019-12-05 00:58:09 +03:00
parent 903c0c563d
commit e2b2a7cc8d
9 changed files with 148 additions and 40 deletions
@@ -0,0 +1,87 @@
+using Google.Apis.Auth.OAuth2;
+using Google.Apis.Oauth2.v2;
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Windows.Security.Authentication.Web;
+using YouTube.Authorization;
+using System.Text.RegularExpressions;
+using Windows.Security.Credentials;
+using FoxTube.Core.Models;
+using YouTube;
+using System.Threading;
+using Google.Apis.YouTube.v3;
+
+namespace FoxTube
+{
+    public static class UsersControl
+    {
+        static ExtendedYouTubeService _defaultService = new ExtendedYouTubeService(new Google.Apis.Services.BaseClientService.Initializer
+        {
+            ApplicationName = "FoxTube",
+            ApiKey = "AIzaSyD7tpbuvmYDv9h4udo9L_g3r0sLPFAnN00"
+        });
+
+        static string[] Scopes { get; } = new string[]
+        {
+            Oauth2Service.Scope.UserinfoProfile,
+            Oauth2Service.Scope.UserinfoEmail,
+            YouTubeService.Scope.YoutubeForceSsl
+        };
+
+        static ClientSecrets ClientSecrets { get; } = new ClientSecrets
+        {
+            ClientId = "1096685398208-u95rcpkqb4e1ijfmb8jdq3jsg37l8igv.apps.googleusercontent.com",
+            ClientSecret = "IU5bbdjwvmx8ttJoXQ7e6JWd"
+        };
+
+        public static User CurrentUser { get; set; }
+        public static bool Authorized => CurrentUser != null;
+        public static ExtendedYouTubeService Service => CurrentUser?.Service ?? _defaultService;
+
+        public static async Task<bool> AddUser()
+        {
+            Uri callbackUri = WebAuthenticationBroker.GetCurrentApplicationCallbackUri();
+            Uri requestString = AuthorizationHelpers.FormQueryString(ClientSecrets, callbackUri, Scopes);
+
+            WebAuthenticationResult result = await WebAuthenticationBroker.AuthenticateAsync(WebAuthenticationOptions.UseTitle, requestString, AuthorizationHelpers.Endpoint);
+            switch(result.ResponseStatus)
+            {
+                case WebAuthenticationStatus.Success:
+                    UserCredential credential = await AuthorizationHelpers.ExchangeToken(ClientSecrets, new Regex(@"(?<=code=).?\w+").Match(result.ResponseData).Value);
+                    CurrentUser = new User(credential);
+                    PasswordVault passwordVault = new PasswordVault();
+                    passwordVault.Add(new PasswordCredential("foxtube", CurrentUser.UserInfo.Id, credential.Token.RefreshToken));
+                    return true;
+                case WebAuthenticationStatus.UserCancel:
+                    break;
+                case WebAuthenticationStatus.ErrorHttp:
+                    Metrics.AddEvent("Authorization failed (HTTP Error)", ("Response data", result.ResponseData), ("Error details", result.ResponseErrorDetail.ToString()));
+                    break;
+            }
+            return false;
+        }
+
+        public static async Task Initialize()
+        {
+            PasswordVault passwordVault = new PasswordVault();
+            IReadOnlyList<PasswordCredential> credentials;
+            credentials = passwordVault.RetrieveAll();
+
+            if (credentials.Count == 0)
+                return;
+
+            credentials[0].RetrievePassword();
+            UserCredential credential = await AuthorizationHelpers.RestoreUser(ClientSecrets, credentials[0].Password);
+            CurrentUser = new User(credential);
+        }
+
+        public static async Task Logout()
+        {
+            PasswordVault passwordVault = new PasswordVault();
+            PasswordCredential credential = passwordVault.Retrieve("foxtube", CurrentUser.UserInfo.Id);
+            passwordVault.Remove(credential);
+            await CurrentUser.Credential.RevokeTokenAsync(CancellationToken.None);
+        }
+    }
+}