Полный рефакторинг api. Вынесено отдельно api passport

YandexMusic.API/Requests/Passport/YGetMusicTokenBuilder.cs

@@ -0,0 +1,26 @@
+using System.Net;
+using System.Net.Http.Headers;
+using YandexMusic.API.Models.Account;
+using YandexMusic.API.Requests.Common;
+
+namespace YandexMusic.API.Requests.Passport;
+
+internal class YGetMusicTokenBuilder : YPassportRequestBuilder<YAccessToken?, string>
+{
+    public YGetMusicTokenBuilder(YandexMusicApi api) : base(api) { }
+    protected override string BaseUrl => YConstants.Endpoints.MobilePassportUrl;
+    protected override string Method => WebRequestMethods.Http.Post;
+    protected override string PathTemplate => "/1/token";
+    protected override HttpContent? GetContent(string passportToken)
+        => new FormUrlEncodedContent(new Dictionary<string, string>
+        {
+            { "client_id", YConstants.ClientId },
+            { "client_secret", YConstants.ClientSecret },
+            { "grant_type", "x-token" },
+            { "access_token", passportToken }
+        });
+    protected override void SetCustomHeaders(HttpRequestHeaders headers)
+    {
+        headers.Remove("Authorization");
+    }
+}