Переделан способ авторизации по qr

YandexMusic.API/API/YTrackAPI.cs

@@ -26,8 +26,8 @@ public class YTrackAPI : YCommonAPI
         return $"https://{host}/get-{codec}/{sign}/{ts}{path}";
     }
 
-    public Task<YTrack?> GetAsync(string trackId)
-        => GetAsync(trackId);
+    public async Task<YTrack?> GetAsync(string trackId)
+        => (await GetAsync([trackId]))?.FirstOrDefault();
 
     public Task<List<YTrack>?> GetAsync(IEnumerable<string> trackIds)
         => new YGetTracksBuilder(Api).ExecuteAsync(trackIds);

YandexMusic.API/API/YUserAPI.cs

@@ -23,7 +23,7 @@ public class YUserAPI : YCommonAPI
         if (!csrfMatch.Success || !processMatch.Success)
             return false;
 
-        Api.Storage.AuthToken = new YAuthToken
+        Api.Storage.HeaderToken = new YAuthToken
         {
             CsfrToken = csrfMatch.Groups[1].Value,
             ProcessUuid = processMatch.Groups[1].Value
@@ -45,9 +45,7 @@ public class YUserAPI : YCommonAPI
         Api.Storage.AccessToken = accessToken;
         Api.Storage.Token = accessToken.AccessToken;
 
-        var shortInfo = await new YGetShortAccountInfoBuilder(Api).ExecuteAsync(null!);
-        if (shortInfo?.Status != YAuthStatus.Ok || string.IsNullOrWhiteSpace(shortInfo.Uid))
-            throw new Exception("Не удалось подтвердить авторизацию");
+        await AuthorizeAsync(accessToken.AccessToken);
 
         return true;
     }
@@ -96,13 +94,31 @@ public class YUserAPI : YCommonAPI
         return $"https://passport.yandex.ru/auth/magic/code/?track_id={qr.TrackId}";
     }
 
-    public async Task<YAuthQRStatus?> AuthorizeByQRAsync()
+    public async Task<YAuthQRStatus?> CheckQRStatusAsync()
     {
         if (Api.Storage.AuthToken == null)
             throw new Exception("Сессия не инициализирована");
 
+        var status = await new YPostQrStatus(Api).ExecuteAsync(null!);
+
+        if (!string.IsNullOrWhiteSpace(status?.TrackId))
+        {
+            Api.Storage.AuthToken.SessionTrackId = status.TrackId;
+        }
+
+        return status;
+    }
+
+    public async Task<YAuthQRSession?> AuthorizeByQRAsync()
+    {
+        if (Api.Storage.AuthToken == null)
+            throw new Exception("Сессия не инициализирована");
+
+        if (string.IsNullOrWhiteSpace(Api.Storage.AuthToken.SessionTrackId))
+            throw new Exception("Токен сессии не инициализирован");
+
         var status = await new YGetAuthLoginQRBuilder(Api).ExecuteAsync(null!);
-        if (status?.Status == YAuthStatus.Ok && await LoginByCookiesAsync())
+        if (status != null && status.DefaultUid != 0 && await LoginByCookiesAsync())
             return status;
         throw new AuthenticationException("Ошибка авторизации по QR");
     }

YandexMusic.API/Common/AuthStorage.cs

@@ -1,3 +1,4 @@
+using System.Net;
 using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Common;
@@ -7,6 +8,15 @@ namespace YandexMusic.API.Common;
 /// </summary>
 public class AuthStorage
 {
+    private CookieContainer _cookieContainer;
+
+    public AuthStorage(CookieContainer cookieContainer)
+    {
+        _cookieContainer = cookieContainer;
+    }
+
+    public CookieContainer CookieContainer => _cookieContainer;
+
     /// <summary>
     /// Флаг, указывающий, авторизован ли пользователь.
     /// </summary>
@@ -35,7 +45,12 @@ public class AuthStorage
     /// <summary>
     /// Внутренние данные авторизации (CSRF, track_id и т.д.).
     /// </summary>
-    internal YAuthToken AuthToken { get; set; } = new();
+    public YAuthToken HeaderToken { get; set; } = new();
+
+    /// <summary>
+    /// Внутренние данные авторизации (CSRF, track_id и т.д.).
+    /// </summary>
+    public YAuthToken AuthToken { get; set; } = new();
 
     /// <summary>
     /// Устанавливает флаг авторизации и сохраняет информацию об аккаунте.

YandexMusic.API/Converters/IntToStringConverter.cs

@@ -3,7 +3,7 @@ using System.Text.Json.Serialization;
 
 namespace YandexMusic.API.Converters;
 
-public class IntToStringConverter : JsonConverter<string>
+internal class IntToStringConverter : JsonConverter<string>
 {
     public override string Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {

YandexMusic.API/Converters/StringToIntConverter.cs

@@ -3,7 +3,7 @@ using System.Text.Json.Serialization;
 
 namespace YandexMusic.API.Converters;
 
-public class StringToIntConverter : JsonConverter<int>
+internal class StringToIntConverter : JsonConverter<int>
 {
     public override int Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {

YandexMusic.API/Models/Account/YAuthQRSession.cs

@@ -0,0 +1,21 @@
+using System.Text.Json.Serialization;
+
+namespace YandexMusic.API.Models.Account;
+
+public class YAuthQRSession
+{
+    [JsonPropertyName("default_uid")]
+    public int DefaultUid { get; set; }
+
+    [JsonPropertyName("retpath")]
+    public string RetPath { get; set; }
+
+    [JsonPropertyName("track_id")]
+    public string TrackId { get; set; }
+
+    public string Id { get; set; }
+
+    public string State { get; set; }
+
+    public YAuthCaptcha Captcha { get; set; }
+}

YandexMusic.API/Models/Account/YAuthQrState.cs

@@ -0,0 +1,9 @@
+using System.Runtime.Serialization;
+
+namespace YandexMusic.API.Models.Account;
+
+public enum YAuthQrState
+{
+    [EnumMember(Value = "otp_auth_finished")]
+    OtpAuthFinished,
+}

YandexMusic.API/Models/Account/YAuthQrStatus.cs

@@ -2,19 +2,11 @@
 
 namespace YandexMusic.API.Models.Account;
 
-public class YAuthQRStatus : YAuthBase
+public class YAuthQRStatus
 {
-    [JsonPropertyName("default_uid")]
-    public int DefaultUid { get; set; }
+    [JsonPropertyName("state")]
+    public string? State { get; set; } = null;
 
-    public string RetPath { get; set; }
-
-    [JsonPropertyName("track_id")]
-    public string TrackId { get; set; }
-
-    public string Id { get; set; }
-
-    public string State { get; set; }
-
-    public YAuthCaptcha Captcha { get; set; }
+    [JsonPropertyName("trackId")]
+    public string TrackId { get; set; } = string.Empty;
 }

YandexMusic.API/Models/Account/YAuthToken.cs

@@ -1,16 +1,13 @@
-using System.Text.Json.Serialization;
-
-namespace YandexMusic.API.Models.Account;
+namespace YandexMusic.API.Models.Account;
 
 public class YAuthToken
 {
-    [JsonPropertyName("csfr_token")]
     public string CsfrToken { get; set; }
 
-    [JsonPropertyName("track_id")]
     public string TrackId { get; set; }
 
-    [JsonPropertyName("process_uuid")]
+    public string SessionTrackId { get; set; }
+
     public string ProcessUuid { get; set; }
 
     public Dictionary<string, string> Cookie { get; set; } = new();

YandexMusic.API/Requests/Account/YGetAuthAppPasswordBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthAppPasswordBuilder : YAuthRequestBuilder<YAuthBase?, string>
+internal class YGetAuthAppPasswordBuilder : YAuthRequestBuilder<YAuthBase?, string>
 {
     public YGetAuthAppPasswordBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Account/YGetAuthCaptchaBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthCaptchaBuilder : YAuthRequestBuilder<YAuthCaptcha?, object>
+internal class YGetAuthCaptchaBuilder : YAuthRequestBuilder<YAuthCaptcha?, object>
 {
     public YGetAuthCaptchaBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Account/YGetAuthCookiesBuilder.cs

@@ -1,14 +1,55 @@
 using System.Net;
+using System.Net.Http.Headers;
 using YandexMusic.API.Models.Account;
 using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthCookiesBuilder : YAuthRequestBuilder<YAccessToken?, object>
+internal class YGetAuthCookiesBuilder : YAuthRequestBuilder<YAccessToken?, object>
 {
     public YGetAuthCookiesBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
+    protected override string BaseUrl => YConstants.Endpoints.MobilePassportUrl;
     protected override string PathTemplate => "1/bundle/oauth/token_by_sessionid";
     protected override HttpContent? GetContent(object _)
         => new FormUrlEncodedContent(new Dictionary<string, string> { { "client_id", YConstants.XClientId }, { "client_secret", YConstants.XClientSecret } });
+    protected override void SetCustomHeaders(HttpRequestHeaders headers)
+    {
+        base.SetCustomHeaders(headers);
+        headers.Add("ya-client-host", "passport.yandex.ru");
+
+        var cookieString = GetCookieString();
+        if (!string.IsNullOrEmpty(cookieString))
+            headers.Add("Ya-Client-Cookie", cookieString);
+    }
+    private string GetCookieString()
+    {
+        var container = Storage.CookieContainer;
+        if (container == null) return string.Empty;
+
+        var uris = new[]
+        {
+            new Uri("https://yandex.ru"),
+            new Uri("https://passport.yandex.ru"),
+            new Uri("https://mobileproxy.passport.yandex.net")
+        };
+
+        var cookies = new List<string>();
+        foreach (var uri in uris)
+        {
+            var cookieCollection = container.GetCookies(uri);
+            foreach (Cookie cookie in cookieCollection)
+            {
+                cookies.Add($"{cookie.Name}={cookie.Value}");
+            }
+        }
+
+        var distinct = cookies
+            .Select(c => c.Split('=')[0])
+            .Distinct()
+            .Select(name => cookies.First(c => c.StartsWith(name + "=")))
+            .ToList();
+
+        return string.Join("; ", distinct);
+    }
 }

YandexMusic.API/Requests/Account/YGetAuthInfoBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthInfoBuilder : YMusicRequestBuilder<YAccountResult?, object>
+internal class YGetAuthInfoBuilder : YMusicRequestBuilder<YAccountResult?, object>
 {
     public YGetAuthInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Account/YGetAuthLetterBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthLetterBuilder : YAuthRequestBuilder<YAuthLetter?, object>
+internal class YGetAuthLetterBuilder : YAuthRequestBuilder<YAuthLetter?, object>
 {
     public YGetAuthLetterBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Account/YGetAuthLoginCaptchaBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthLoginCaptchaBuilder : YAuthRequestBuilder<YAuthBase?, string>
+internal class YGetAuthLoginCaptchaBuilder : YAuthRequestBuilder<YAuthBase?, string>
 {
     public YGetAuthLoginCaptchaBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Account/YGetAuthLoginLetterBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthLoginLetterBuilder : YAuthRequestBuilder<YAuthLetterStatus?, object>
+internal class YGetAuthLoginLetterBuilder : YAuthRequestBuilder<YAuthLetterStatus?, object>
 {
     public YGetAuthLoginLetterBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Account/YGetAuthLoginQRBuilder.cs

@@ -1,9 +1,10 @@
 using System.Net;
+using System.Net.Http.Headers;
 using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-internal class YGetAuthLoginQRBuilder : YAuthRequestBuilder<YAuthQRStatus, string>
+internal class YGetAuthLoginQRBuilder : YAuthRequestBuilder<YAuthQRSession, string>
 {
     public YGetAuthLoginQRBuilder(YandexMusicApi yandex) : base(yandex)
     {
@@ -11,13 +12,17 @@ internal class YGetAuthLoginQRBuilder : YAuthRequestBuilder<YAuthQRStatus, strin
 
     protected override string Method => WebRequestMethods.Http.Post;
 
-    protected override string PathTemplate => "auth/new/magic/status/";
+    protected override string PathTemplate => "pwl-yandex/api/passport/sessions/get_session";
 
     protected override HttpContent GetContent(string tuple)
     {
         return new FormUrlEncodedContent(new Dictionary<string, string> {
-            { "csrf_token", Api.Storage.AuthToken.CsfrToken },
-            { "track_id", Api.Storage.AuthToken.TrackId }
+            { "track_id", Api.Storage.AuthToken.SessionTrackId }
         });
     }
+    protected override void SetCustomHeaders(HttpRequestHeaders headers)
+    {
+        headers.Add("X-Csrf-Token", Api.Storage.HeaderToken.CsfrToken);
+        headers.Add("Process-Uuid", Api.Storage.HeaderToken.ProcessUuid);
+    }
 }

YandexMusic.API/Requests/Account/YGetAuthLoginUserBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthLoginUserBuilder : YAuthRequestBuilder<YAuthTypes?, (string token, string login)>
+internal class YGetAuthLoginUserBuilder : YAuthRequestBuilder<YAuthTypes?, (string token, string login)>
 {
     public YGetAuthLoginUserBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Account/YGetAuthMethodsBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthMethodsBuilder : YRequestBuilder<object>
+internal class YGetAuthMethodsBuilder : YRequestBuilder<object>
 {
     public YGetAuthMethodsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Account/YGetAuthQRBuilder.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetAuthQRBuilder : YAuthRequestBuilder<YAuthQR?, object>
+internal class YGetAuthQRBuilder : YAuthRequestBuilder<YAuthQR?, object>
 {
     public YGetAuthQRBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
@@ -13,7 +13,7 @@ public class YGetAuthQRBuilder : YAuthRequestBuilder<YAuthQR?, object>
         => new FormUrlEncodedContent(new Dictionary<string, string> { { "retpath", "" } });
     protected override void SetCustomHeaders(HttpRequestHeaders headers)
     {
-        headers.Add("X-Csrf-Token", Api.Storage.AuthToken.CsfrToken);
-        headers.Add("Process-Uuid", Api.Storage.AuthToken.ProcessUuid);
+        headers.Add("X-Csrf-Token", Api.Storage.HeaderToken.CsfrToken);
+        headers.Add("Process-Uuid", Api.Storage.HeaderToken.ProcessUuid);
     }
 }

YandexMusic.API/Requests/Account/YGetLoginInfoBuilder.cs

@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Account;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetLoginInfoBuilder : YAuthRequestBuilder<YLoginInfo?, object>
+internal class YGetLoginInfoBuilder : YAuthRequestBuilder<YLoginInfo?, object>
 {
     public YGetLoginInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Account/YGetMusicTokenBuilder.cs

@@ -5,7 +5,7 @@ using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetMusicTokenBuilder : YAuthRequestBuilder<YAccessToken?, object>
+internal class YGetMusicTokenBuilder : YAuthRequestBuilder<YAccessToken?, object>
 {
     public YGetMusicTokenBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Account/YGetShortAccountInifoBuilder.cs

@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YGetShortAccountInfoBuilder : YAuthRequestBuilder<YShortAccountInfo?, object>
+internal class YGetShortAccountInfoBuilder : YAuthRequestBuilder<YShortAccountInfo?, object>
 {
     public YGetShortAccountInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Account/YPostAuthStats.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Account;
 
 namespace YandexMusic.API.Requests.Account;
 
-public class YPostAuthStats : YAuthRequestBuilder<YAuthEmpty?, object>
+internal class YPostAuthStats : YAuthRequestBuilder<YAuthEmpty?, object>
 {
     public YPostAuthStats(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;
@@ -13,7 +13,7 @@ public class YPostAuthStats : YAuthRequestBuilder<YAuthEmpty?, object>
         => new FormUrlEncodedContent(new Dictionary<string, string> { { "messageType", "CLIENT_READY" } });
     protected override void SetCustomHeaders(HttpRequestHeaders headers)
     {
-        headers.Add("X-Csrf-Token", Api.Storage.AuthToken.CsfrToken);
-        headers.Add("Process-Uuid", Api.Storage.AuthToken.ProcessUuid);
+        headers.Add("X-Csrf-Token", Api.Storage.HeaderToken.CsfrToken);
+        headers.Add("Process-Uuid", Api.Storage.HeaderToken.ProcessUuid);
     }
 }

YandexMusic.API/Requests/Account/YPostQrStatus.cs

@@ -0,0 +1,23 @@
+using System.Net;
+using System.Net.Http.Headers;
+using YandexMusic.API.Models.Account;
+
+namespace YandexMusic.API.Requests.Account;
+
+internal class YPostQrStatus : YAuthRequestBuilder<YAuthQRStatus?, object>
+{
+    public YPostQrStatus(YandexMusicApi api) : base(api) { }
+    protected override string Method => WebRequestMethods.Http.Post;
+    protected override string PathTemplate => "pwl-yandex/api/passport/auth/magic/code/status";
+    protected override HttpContent? GetContent(object _)
+        => new FormUrlEncodedContent(new Dictionary<string, string>
+        {
+            ["csrf_token"] = Api.Storage.AuthToken.CsfrToken,
+            ["track_id"] = Api.Storage.AuthToken.TrackId,
+        });
+    protected override void SetCustomHeaders(HttpRequestHeaders headers)
+    {
+        headers.Add("X-Csrf-Token", Api.Storage.HeaderToken.CsfrToken);
+        headers.Add("Process-Uuid", Api.Storage.HeaderToken.ProcessUuid);
+    }
+}

YandexMusic.API/Requests/Album/YGetAlbumBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Album;
 
 namespace YandexMusic.API.Requests.Album;
 
-public class YGetAlbumBuilder : YMusicRequestBuilder<YAlbum?, string>
+internal class YGetAlbumBuilder : YMusicRequestBuilder<YAlbum?, string>
 {
     public YGetAlbumBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Album/YGetAlbumsBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Album;
 
 namespace YandexMusic.API.Requests.Album;
 
-public class YGetAlbumsBuilder : YMusicRequestBuilder<List<YAlbum>?, IEnumerable<string>>
+internal class YGetAlbumsBuilder : YMusicRequestBuilder<List<YAlbum>?, IEnumerable<string>>
 {
     public YGetAlbumsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Artist/YGetArtistBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Artist;
 
 namespace YandexMusic.API.Requests.Artist;
 
-public class YGetArtistBuilder : YMusicRequestBuilder<YArtistBriefInfo?, string>
+internal class YGetArtistBuilder : YMusicRequestBuilder<YArtistBriefInfo?, string>
 {
     public YGetArtistBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Artist/YGetArtistTrackBuilder.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Artist;
 
 namespace YandexMusic.API.Requests.Artist;
 
-public class YGetArtistTrackBuilder : YMusicRequestBuilder<YTracksPage?, (string id, int page, int pageSize)>
+internal class YGetArtistTrackBuilder : YMusicRequestBuilder<YTracksPage?, (string id, int page, int pageSize)>
 {
     public YGetArtistTrackBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Artist/YGetArtistsBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Artist;
 
 namespace YandexMusic.API.Requests.Artist;
 
-public class YGetArtistsBuilder : YMusicRequestBuilder<List<YArtist>?, IEnumerable<string>>
+internal class YGetArtistsBuilder : YMusicRequestBuilder<List<YArtist>?, IEnumerable<string>>
 {
     public YGetArtistsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Common/YAuthRequestBuilder.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Requests.Common;
 namespace YandexMusic.API.Requests;
 
 /// <summary>Базовый класс для запросов к Passport (passport.yandex.ru).</summary>
-public abstract class YAuthRequestBuilder<TResponse, TParams> : YJsonRequestBuilder<TResponse, TParams>
+internal abstract class YAuthRequestBuilder<TResponse, TParams> : YJsonRequestBuilder<TResponse, TParams>
 {
     protected override string BaseUrl => YConstants.Endpoints.PassportUrl;
 

YandexMusic.API/Requests/Common/YConstants.cs

@@ -12,5 +12,6 @@ internal class YConstants
     {
         public const string MusicUrl = "https://api.music.yandex.net";
         public const string PassportUrl = "https://passport.yandex.ru/";
+        public const string MobilePassportUrl = "https://mobileproxy.passport.yandex.net";
     }
 }

YandexMusic.API/Requests/Common/YJsonRequestBuilder.cs

@@ -8,7 +8,7 @@ namespace YandexMusic.API.Requests.Common;
 /// <summary>
 /// Строитель запросов с десериализацией JSON-ответа в TResponse.
 /// </summary>
-public abstract class YJsonRequestBuilder<TResponse, TParams> : YRequestBuilder<TParams>
+internal abstract class YJsonRequestBuilder<TResponse, TParams> : YRequestBuilder<TParams>
 {
     protected YJsonRequestBuilder(YandexMusicApi api) : base(api) { }
 

YandexMusic.API/Requests/Common/YMusicRequestBuilder.cs

@@ -8,7 +8,7 @@ using YandexMusic.API.Requests.Common;
 namespace YandexMusic.API.Requests;
 
 /// <summary>Базовый класс для запросов к API Яндекс Музыки (api.music.yandex.net).</summary>
-public abstract class YMusicRequestBuilder<TResponse, TParams> : YJsonRequestBuilder<TResponse, TParams>
+internal abstract class YMusicRequestBuilder<TResponse, TParams> : YJsonRequestBuilder<TResponse, TParams>
 {
     protected override string BaseUrl => YConstants.Endpoints.MusicUrl;
 

YandexMusic.API/Requests/Common/YRequestBuilder.cs

@@ -12,7 +12,7 @@ namespace YandexMusic.API.Requests.Common;
 
 /// <summary>Базовый строитель HTTP-запросов.</summary>
 /// <typeparam name="TParams">Тип параметров запроса.</typeparam>
-public abstract class YRequestBuilder<TParams>
+internal abstract class YRequestBuilder<TParams>
 {
     /// <summary>HTTP-метод (GET, POST и т.д.).</summary>
     protected abstract string Method { get; }

YandexMusic.API/Requests/Feed/YGetFeedBuilder.cs

@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Feed;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Feed;
 
-public class YGetFeedBuilder : YMusicRequestBuilder<YFeed?, object>
+internal class YGetFeedBuilder : YMusicRequestBuilder<YFeed?, object>
 {
     public YGetFeedBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Label/YGetLabelAlbumsBuilder.cs

@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Label;
 
 namespace YandexMusic.API.Requests.Label;
 
-public class YGetLabelAlbumsBuilder : YMusicRequestBuilder<YLabelAlbums?, (YLabel label, int pageNumber)>
+internal class YGetLabelAlbumsBuilder : YMusicRequestBuilder<YLabelAlbums?, (YLabel label, int pageNumber)>
 {
     public YGetLabelAlbumsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Label/YGetLabelArtistsBuilder.cs

@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Label;
 
 namespace YandexMusic.API.Requests.Label;
 
-public class YGetLabelArtistsBuilder : YMusicRequestBuilder<YLabelArtists?, (YLabel label, int pageNumber)>
+internal class YGetLabelArtistsBuilder : YMusicRequestBuilder<YLabelArtists?, (YLabel label, int pageNumber)>
 {
     public YGetLabelArtistsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Landing/YGetChildrenLandingBuilder.cs

@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Landing;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Landing;
 
-public class YGetChildrenLandingBuilder : YMusicRequestBuilder<YChildrenLanding?, object>
+internal class YGetChildrenLandingBuilder : YMusicRequestBuilder<YChildrenLanding?, object>
 {
     public YGetChildrenLandingBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Landing/YGetLandingBuilder.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Landing;
 
 namespace YandexMusic.API.Requests.Landing;
 
-public class YGetLandingBuilder : YMusicRequestBuilder<YLanding?, YLandingBlockType[]>
+internal class YGetLandingBuilder : YMusicRequestBuilder<YLanding?, YLandingBlockType[]>
 {
     public YGetLandingBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Library/YGetLibraryRecentlyListenedBuilder.cs

@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Library;
 
 namespace YandexMusic.API.Requests.Library;
 
-public class YGetLibraryRecentlyListenedBuilder : YMusicRequestBuilder<YRecentlyListenedContext?, (IEnumerable<YPlayContextType> contextTypes, int trackCount, int contextCount)>
+internal class YGetLibraryRecentlyListenedBuilder : YMusicRequestBuilder<YRecentlyListenedContext?, (IEnumerable<YPlayContextType> contextTypes, int trackCount, int contextCount)>
 {
     public YGetLibraryRecentlyListenedBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Library/YGetLibrarySectionBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Library;
 
 namespace YandexMusic.API.Requests.Library;
 
-public class YGetLibrarySectionBuilder<T> : YMusicRequestBuilder<T?, (YLibrarySection section, YLibrarySectionType type)>
+internal class YGetLibrarySectionBuilder<T> : YMusicRequestBuilder<T?, (YLibrarySection section, YLibrarySectionType type)>
 {
     public YGetLibrarySectionBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Library/YLibraryAddBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Library;
 
 namespace YandexMusic.API.Requests.Library;
 
-public class YLibraryAddBuilder<T> : YMusicRequestBuilder<T?, (string id, YLibrarySection section, YLibrarySectionType type)>
+internal class YLibraryAddBuilder<T> : YMusicRequestBuilder<T?, (string id, YLibrarySection section, YLibrarySectionType type)>
 {
     public YLibraryAddBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Library/YLibraryRemoveBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Library;
 
 namespace YandexMusic.API.Requests.Library;
 
-public class YLibraryRemoveBuilder<T> : YMusicRequestBuilder<T?, (string id, YLibrarySection section, YLibrarySectionType type)>
+internal class YLibraryRemoveBuilder<T> : YMusicRequestBuilder<T?, (string id, YLibrarySection section, YLibrarySectionType type)>
 {
     public YLibraryRemoveBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Pins/YGetPinsBuilder.cs

@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Pins;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Pins;
 
-public class YGetPinsBuilder : YMusicRequestBuilder<YPins?, object>
+internal class YGetPinsBuilder : YMusicRequestBuilder<YPins?, object>
 {
     public YGetPinsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Playlist/YGetPlaylistBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YGetPlaylistBuilder : YMusicRequestBuilder<YPlaylist?, (string user, string kind)>
+internal class YGetPlaylistBuilder : YMusicRequestBuilder<YPlaylist?, (string user, string kind)>
 {
     public YGetPlaylistBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Playlist/YGetPlaylistByUuidBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YGetPlaylistByUuidBuilder : YMusicRequestBuilder<YPlaylist?, string>
+internal class YGetPlaylistByUuidBuilder : YMusicRequestBuilder<YPlaylist?, string>
 {
     public YGetPlaylistByUuidBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Playlist/YGetPlaylistFavoritesBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YGetPlaylistFavoritesBuilder : YMusicRequestBuilder<List<YPlaylist>?, object>
+internal class YGetPlaylistFavoritesBuilder : YMusicRequestBuilder<List<YPlaylist>?, object>
 {
     public YGetPlaylistFavoritesBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Playlist/YGetPlaylistsBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YGetPlaylistsBuilder : YMusicRequestBuilder<List<YPlaylist>?, IEnumerable<(string User, string Kind)>>
+internal class YGetPlaylistsBuilder : YMusicRequestBuilder<List<YPlaylist>?, IEnumerable<(string User, string Kind)>>
 {
     public YGetPlaylistsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Playlist/YPlaylistChangeBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YPlaylistChangeBuilder : YMusicRequestBuilder<YPlaylist?, (YPlaylist playlist, IEnumerable<YPlaylistChange> changes)>
+internal class YPlaylistChangeBuilder : YMusicRequestBuilder<YPlaylist?, (YPlaylist playlist, IEnumerable<YPlaylistChange> changes)>
 {
     public YPlaylistChangeBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Playlist/YPlaylistCreateBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YPlaylistCreateBuilder : YMusicRequestBuilder<YPlaylist?, string>
+internal class YPlaylistCreateBuilder : YMusicRequestBuilder<YPlaylist?, string>
 {
     public YPlaylistCreateBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Playlist/YPlaylistRemoveBuilder.cs

@@ -2,7 +2,7 @@
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YPlaylistRemoveBuilder : YMusicRequestBuilder<HttpResponseMessage, string>
+internal class YPlaylistRemoveBuilder : YMusicRequestBuilder<HttpResponseMessage, string>
 {
     public YPlaylistRemoveBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Playlist/YPlaylistRenameBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Playlist;
 
 namespace YandexMusic.API.Requests.Playlist;
 
-public class YPlaylistRenameBuilder : YMusicRequestBuilder<YPlaylist?, (string kind, string name)>
+internal class YPlaylistRenameBuilder : YMusicRequestBuilder<YPlaylist?, (string kind, string name)>
 {
     public YPlaylistRenameBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Queue/YGetQueueBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Queue;
 
 namespace YandexMusic.API.Requests.Queue;
 
-public class YGetQueueBuilder : YMusicRequestBuilder<YQueue?, string>
+internal class YGetQueueBuilder : YMusicRequestBuilder<YQueue?, string>
 {
     public YGetQueueBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Queue/YQueueCreateBuilder.cs

@@ -8,7 +8,7 @@ using YandexMusic.API.Models.Queue;
 
 namespace YandexMusic.API.Requests.Queue;
 
-public class YQueueCreateBuilder : YMusicRequestBuilder<YNewQueue?, YQueue>
+internal class YQueueCreateBuilder : YMusicRequestBuilder<YNewQueue?, YQueue>
 {
     private string? _device;
     public YQueueCreateBuilder(YandexMusicApi api, string? device = null) : base(api) => _device = device;

YandexMusic.API/Requests/Queue/YQueueUpdatePositionBuilder.cs

@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Queue;
 
 namespace YandexMusic.API.Requests.Queue;
 
-public class YQueueUpdatePositionBuilder : YMusicRequestBuilder<YUpdatedQueue?, (string queueId, int currentIndex, bool isInteractive)>
+internal class YQueueUpdatePositionBuilder : YMusicRequestBuilder<YUpdatedQueue?, (string queueId, int currentIndex, bool isInteractive)>
 {
     private string? _device;
     public YQueueUpdatePositionBuilder(YandexMusicApi api, string? device = null) : base(api) => _device = device;

YandexMusic.API/Requests/Queue/YQueuesListBuilder.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Queue;
 
 namespace YandexMusic.API.Requests.Queue;
 
-public class YQueuesListBuilder : YMusicRequestBuilder<YQueueItemsContainer?, string?>
+internal class YQueuesListBuilder : YMusicRequestBuilder<YQueueItemsContainer?, string?>
 {
     private string? _device;
     public YQueuesListBuilder(YandexMusicApi api, string? device = null) : base(api) => _device = device;

YandexMusic.API/Requests/Radio/YGetStationBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Radio;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YGetStationBuilder : YMusicRequestBuilder<List<YStation>?, (string type, string tag)>
+internal class YGetStationBuilder : YMusicRequestBuilder<List<YStation>?, (string type, string tag)>
 {
     public YGetStationBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Radio/YGetStationTracksBuilder.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Radio;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YGetStationTracksBuilder : YMusicRequestBuilder<YStationSequence?, (YStationDescription station, string prevTrackId)>
+internal class YGetStationTracksBuilder : YMusicRequestBuilder<YStationSequence?, (YStationDescription station, string prevTrackId)>
 {
     public YGetStationTracksBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Radio/YGetStationsBuilder.cs

@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Radio;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YGetStationsBuilder : YMusicRequestBuilder<List<YStation>?, object>
+internal class YGetStationsBuilder : YMusicRequestBuilder<List<YStation>?, object>
 {
     public YGetStationsBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Radio/YGetStationsDashboardBuilder.cs

@@ -1,10 +1,9 @@
 using System.Net;
 using YandexMusic.API.Models.Radio;
-using YandexMusic.API.Requests.Common;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YGetStationsDashboardBuilder : YMusicRequestBuilder<YStationsDashboard?, object>
+internal class YGetStationsDashboardBuilder : YMusicRequestBuilder<YStationsDashboard?, object>
 {
     public YGetStationsDashboardBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Radio/YSetSettings2Builder.cs

@@ -8,7 +8,7 @@ using YandexMusic.API.Models.Radio;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YSetSettings2Builder : YMusicRequestBuilder<string?, (YStationDescription station, YStationSettings2 settings2)>
+internal class YSetSettings2Builder : YMusicRequestBuilder<string?, (YStationDescription station, YStationSettings2 settings2)>
 {
     public YSetSettings2Builder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Radio/YSetStationFeedbackBuilder.cs

@@ -10,7 +10,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Radio;
 
-public class YSetStationFeedbackBuilder : YMusicRequestBuilder<string?, (YStationFeedbackType type, YStation station, YTrack? track, string batchId, double totalPlayedSeconds)>
+internal class YSetStationFeedbackBuilder : YMusicRequestBuilder<string?, (YStationFeedbackType type, YStation station, YTrack? track, string batchId, double totalPlayedSeconds)>
 {
     public YSetStationFeedbackBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Search/YSearchBuilder.cs

@@ -5,7 +5,7 @@ using YandexMusic.API.Models.Search;
 
 namespace YandexMusic.API.Requests.Search;
 
-public class YSearchBuilder : YMusicRequestBuilder<YSearch?, (string searchText, YSearchType searchType, int page, int pageSize)>
+internal class YSearchBuilder : YMusicRequestBuilder<YSearch?, (string searchText, YSearchType searchType, int page, int pageSize)>
 {
     public YSearchBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Search/YSearchSuggestBuilder.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Search;
 
 namespace YandexMusic.API.Requests.Search;
 
-public class YSearchSuggestBuilder : YMusicRequestBuilder<YSearchSuggest?, string>
+internal class YSearchSuggestBuilder : YMusicRequestBuilder<YSearchSuggest?, string>
 {
     public YSearchSuggestBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Track/YGetTrackSimilarBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YGetTrackSimilarBuilder : YMusicRequestBuilder<YTrackSimilar?, string>
+internal class YGetTrackSimilarBuilder : YMusicRequestBuilder<YTrackSimilar?, string>
 {
     public YGetTrackSimilarBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Track/YGetTrackSupplementBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YGetTrackSupplementBuilder : YMusicRequestBuilder<YTrackSupplement?, string>
+internal class YGetTrackSupplementBuilder : YMusicRequestBuilder<YTrackSupplement?, string>
 {
     public YGetTrackSupplementBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Track/YGetTracksBuilder.cs

@@ -3,7 +3,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YGetTracksBuilder : YMusicRequestBuilder<List<YTrack>?, IEnumerable<string>>
+internal class YGetTracksBuilder : YMusicRequestBuilder<List<YTrack>?, IEnumerable<string>>
 {
     public YGetTracksBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Track/YSendTrackInfoBuilder.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Track;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YSendTrackInfoBuilder : YMusicRequestBuilder<string?, (YTrack track, string from, bool fromCache, string playId, string playlistId, double totalPlayedSeconds, double endPositionSeconds)>
+internal class YSendTrackInfoBuilder : YMusicRequestBuilder<string?, (YTrack track, string from, bool fromCache, string playId, string playlistId, double totalPlayedSeconds, double endPositionSeconds)>
 {
     public YSendTrackInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Post;

YandexMusic.API/Requests/Track/YStorageDownloadFileBuilder.cs

@@ -6,7 +6,7 @@ using YandexMusic.API.Requests.Common;
 namespace YandexMusic.API.Requests.Track;
 
 /// <summary>Особый запрос – не к api.music.yandex.net, а к произвольному URL.</summary>
-public class YStorageDownloadFileBuilder : YJsonRequestBuilder<YStorageDownloadFile?, string>
+internal class YStorageDownloadFileBuilder : YJsonRequestBuilder<YStorageDownloadFile?, string>
 {
     public YStorageDownloadFileBuilder(YandexMusicApi api) : base(api) { }
     protected override string BaseUrl => ""; // не используется, т.к. URL берётся из параметра

YandexMusic.API/Requests/Track/YTrackDownloadInfoBuilder.cs

@@ -4,7 +4,7 @@ using YandexMusic.API.Models.Common;
 
 namespace YandexMusic.API.Requests.Track;
 
-public class YTrackDownloadInfoBuilder : YMusicRequestBuilder<List<YTrackDownloadInfo>?, (string trackKey, bool direct)>
+internal class YTrackDownloadInfoBuilder : YMusicRequestBuilder<List<YTrackDownloadInfo>?, (string trackKey, bool direct)>
 {
     public YTrackDownloadInfoBuilder(YandexMusicApi api) : base(api) { }
     protected override string Method => WebRequestMethods.Http.Get;

YandexMusic.API/Requests/Ugc/YUgcGetUploadLinkBuilder.cs

@@ -6,7 +6,7 @@ using YandexMusic.API.Models.Ugc;
 
 namespace YandexMusic.API.Requests.Ugc;
 
-public class YUgcGetUploadLinkBuilder : YMusicRequestBuilder<YUgcUpload?, (YPlaylist playlist, string fileName)>
+internal class YUgcGetUploadLinkBuilder : YMusicRequestBuilder<YUgcUpload?, (YPlaylist playlist, string fileName)>
 {
     private static readonly Random _random = new();
     public YUgcGetUploadLinkBuilder(YandexMusicApi api) : base(api) { }

YandexMusic.API/Requests/Ugc/YUgcUploadBuilder.cs

@@ -5,7 +5,7 @@ using YandexMusic.API.Requests.Common;
 namespace YandexMusic.API.Requests.Ugc;
 
 /// <summary>Загрузка трека – специальный запрос на произвольный URL.</summary>
-public class YUgcUploadBuilder : YJsonRequestBuilder<YResponse<string>?, (string postTargetLink, byte[] fileBytes)>
+internal class YUgcUploadBuilder : YJsonRequestBuilder<YResponse<string>?, (string postTargetLink, byte[] fileBytes)>
 {
     public YUgcUploadBuilder(YandexMusicApi api) : base(api) { }
     protected override string BaseUrl => "";

YandexMusic/YandexMusicClient.cs

@@ -1,4 +1,5 @@
-using YandexMusic.API;
+using System.Net;
+using YandexMusic.API;
 using YandexMusic.API.Common;
 using YandexMusic.API.Common.Ynison;
 using YandexMusic.API.Models.Account;
@@ -26,6 +27,9 @@ public class YandexMusicClient : IDisposable
     private readonly bool _ownsHttpClient;
     private YnisonPlayer? _player;
 
+    /// <summary>Хранилище авторизации.</summary>
+    public AuthStorage AuthStorage => _storage;
+
     /// <summary>Информация об аккаунте (после авторизации).</summary>
     public YAccount Account => _storage.User;
 
@@ -39,20 +43,39 @@ public class YandexMusicClient : IDisposable
     public HttpClient HttpClient => _httpClient;
 
     /// <summary>Создаёт новый экземпляр клиента с собственным HttpClient.</summary>
-    public YandexMusicClient() : this(YandexMusicHttpClientFactory.CreateDefault())
+    public YandexMusicClient(
+        CookieContainer? cookieContainer = null,
+        IWebProxy? proxy = null,
+        TimeSpan? timeout = null,
+        string? userAgent = null
+        )
     {
-        _ownsHttpClient = true;
-    }
+        if (cookieContainer == null) cookieContainer = new CookieContainer();
 
-    /// <summary>
-    /// Создаёт новый экземпляр клиента с указанным HttpClient.
-    /// </summary>
-    /// <param name="httpClient">Экземпляр HttpClient (должен быть настроен с нужными куками, таймаутами).</param>
-    /// <param name="ownsHttpClient">Если true, клиент будет отвечать за освобождение HttpClient при Dispose.</param>
-    public YandexMusicClient(HttpClient httpClient)
-    {
-        _httpClient = httpClient ?? throw new ArgumentNullException(nameof(httpClient));
-        _storage = new AuthStorage();
+        var handler = new HttpClientHandler
+        {
+            AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate,
+            UseCookies = true,
+            CookieContainer = cookieContainer,
+            AllowAutoRedirect = true,
+            MaxAutomaticRedirections = 10,
+            Proxy = proxy,
+            UseProxy = proxy != null
+        };
+
+        var client = new HttpClient(handler, disposeHandler: true)
+        {
+            Timeout = timeout ?? TimeSpan.FromSeconds(30)
+        };
+
+        // Стандартный User-Agent, похожий на браузерный
+        client.DefaultRequestHeaders.Add("User-Agent",
+            userAgent ?? "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36");
+        client.DefaultRequestHeaders.Add("Accept", "*/*");
+        client.DefaultRequestHeaders.Add("Accept-Language", "ru-RU,ru;q=0.9,en;q=0.8");
+
+        _httpClient = client;
+        _storage = new AuthStorage(cookieContainer);
         _api = new YandexMusicApi(_httpClient, _storage);
     }
 
@@ -73,8 +96,12 @@ public class YandexMusicClient : IDisposable
     public Task<string?> GetAuthQRLink()
         => _api.User.GetAuthQRLinkAsync();
 
+    /// <summary>Проверка состояния сканирования QR-кода.</summary>
+    public Task<YAuthQRStatus?> CheckQRStatusAsync()
+        => _api.User.CheckQRStatusAsync();
+
     /// <summary>Авторизация по QR-коду (после сканирования).</summary>
-    public Task<YAuthQRStatus?> AuthorizeByQR()
+    public Task<YAuthQRSession?> AuthorizeByQR()
         => _api.User.AuthorizeByQRAsync();
 
     /// <summary>Получение капчи.</summary>