Добавлен playlist shared
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FrigaT
173
PlaylistShared/Services/YandexMusicService.cs
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173
PlaylistShared/Services/YandexMusicService.cs
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using PlaylistShared.Data.Contexts;
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using PlaylistShared.Data.Entities;
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using System.Net.Http.Headers;
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using System.Text;
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using System.Text.Json;
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namespace PlaylistShared.Services;
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public class YandexMusicService : IYandexMusicService
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{
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private readonly AppDbContext _db;
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private readonly HttpClient _http;
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private readonly IConfiguration _config;
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private readonly ILogger<YandexMusicService> _logger;
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public YandexMusicService(AppDbContext db, IHttpClientFactory factory, IConfiguration config, ILogger<YandexMusicService> logger)
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{
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_db = db;
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_http = factory.CreateClient();
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_config = config;
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_logger = logger;
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}
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private async Task<ApplicationUser> GetUserWithValidTokenAsync(string userId)
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{
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var user = await _db.Users.FindAsync(userId);
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if (user == null) throw new Exception("User not found");
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if (user.AccessTokenExpiresAt <= DateTime.UtcNow.AddMinutes(5))
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{
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var newToken = await RefreshYandexTokenAsync(user.RefreshToken!);
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user.AccessToken = newToken.access_token;
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user.RefreshToken = newToken.refresh_token;
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user.AccessTokenExpiresAt = DateTime.UtcNow.AddSeconds(newToken.expires_in);
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await _db.SaveChangesAsync();
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}
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return user;
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}
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private async Task<(string access_token, string refresh_token, int expires_in)> RefreshYandexTokenAsync(string refreshToken)
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{
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var content = new FormUrlEncodedContent(new[]
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{
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new KeyValuePair<string, string>("grant_type", "refresh_token"),
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new KeyValuePair<string, string>("refresh_token", refreshToken),
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new KeyValuePair<string, string>("client_id", _config["YandexOAuth:ClientId"]),
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new KeyValuePair<string, string>("client_secret", _config["YandexOAuth:ClientSecret"])
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});
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var response = await _http.PostAsync(_config["YandexOAuth:TokenEndpoint"], content);
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response.EnsureSuccessStatusCode();
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var json = await response.Content.ReadAsStringAsync();
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using var doc = JsonDocument.Parse(json);
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return (
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doc.RootElement.GetProperty("access_token").GetString()!,
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doc.RootElement.GetProperty("refresh_token").GetString()!,
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doc.RootElement.GetProperty("expires_in").GetInt32()
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);
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}
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public async Task<string> CreatePlaylistAsync(string userId, string title)
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{
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var user = await GetUserWithValidTokenAsync(userId);
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_http.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("OAuth", user.AccessToken);
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var payload = new { title, visibility = "public" };
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var json = JsonSerializer.Serialize(payload);
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var response = await _http.PostAsync("https://api.music.yandex.net/users/self/playlists/create",
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new StringContent(json, Encoding.UTF8, "application/json"));
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response.EnsureSuccessStatusCode();
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var resultJson = await response.Content.ReadAsStringAsync();
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var result = JsonSerializer.Deserialize<YandexApiResponse<YandexPlaylistData>>(resultJson);
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return result!.Result.Kind;
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}
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public async Task AddTrackToPlaylistAsync(string userId, string yandexPlaylistId, string trackId)
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{
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var user = await GetUserWithValidTokenAsync(userId);
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var uid = user.YandexId; // или user.Id? В API Яндекса используется uid из аккаунта, но можно использовать "self"
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// Получаем альбом трека (опционально, можно передать без albumId)
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// Для простоты используем трек без albumId
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var diff = new[]
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{
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new
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{
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op = "insert",
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at = 0,
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tracks = new[] { new { id = trackId } }
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}
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};
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var json = JsonSerializer.Serialize(diff);
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var content = new StringContent(json, Encoding.UTF8, "application/json");
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var url = $"https://api.music.yandex.net/users/{uid}/playlists/{yandexPlaylistId}/change";
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var response = await _http.PostAsync(url, content);
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response.EnsureSuccessStatusCode();
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}
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public async Task RemoveTrackFromPlaylistAsync(string userId, string yandexPlaylistId, string trackId)
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{
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var user = await GetUserWithValidTokenAsync(userId);
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var uid = user.YandexId;
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// Сначала нужно получить позицию трека в плейлисте – упростим: удаляем по индексу (не надёжно)
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// Лучше получить плейлист, найти индекс трека, потом удалить
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var playlist = await GetPlaylistInfoAsync(userId, yandexPlaylistId);
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var tracks = await GetPlaylistTracksAsync(userId, yandexPlaylistId);
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var index = tracks.FindIndex(t => t.Id == trackId);
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if (index == -1) throw new Exception("Track not found in playlist");
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var diff = new[]
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{
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new
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{
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op = "delete",
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from = index,
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to = index + 1
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}
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};
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var json = JsonSerializer.Serialize(diff);
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var content = new StringContent(json, Encoding.UTF8, "application/json");
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var url = $"https://api.music.yandex.net/users/{uid}/playlists/{yandexPlaylistId}/change";
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var response = await _http.PostAsync(url, content);
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response.EnsureSuccessStatusCode();
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}
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public async Task<List<YandexTrackInfo>> GetPlaylistTracksAsync(string userId, string yandexPlaylistId)
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{
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var user = await GetUserWithValidTokenAsync(userId);
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_http.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("OAuth", user.AccessToken);
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var uid = user.YandexId;
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var url = $"https://api.music.yandex.net/users/{uid}/playlists/{yandexPlaylistId}";
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var response = await _http.GetAsync(url);
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response.EnsureSuccessStatusCode();
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var json = await response.Content.ReadAsStringAsync();
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var data = JsonSerializer.Deserialize<YandexApiResponse<YandexPlaylistFull>>(json);
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return data!.Result.Tracks?.Select(t => new YandexTrackInfo(
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t.Id.ToString(),
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t.Title,
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t.Artists?.FirstOrDefault()?.Name,
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t.Albums?.FirstOrDefault()?.Title,
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t.DurationMs
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)).ToList() ?? new();
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}
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public async Task<YandexPlaylistInfo> GetPlaylistInfoAsync(string userId, string yandexPlaylistId)
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{
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var user = await GetUserWithValidTokenAsync(userId);
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_http.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("OAuth", user.AccessToken);
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var uid = user.YandexId;
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var url = $"https://api.music.yandex.net/users/{uid}/playlists/{yandexPlaylistId}";
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var response = await _http.GetAsync(url);
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response.EnsureSuccessStatusCode();
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var json = await response.Content.ReadAsStringAsync();
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var data = JsonSerializer.Deserialize<YandexApiResponse<YandexPlaylistFull>>(json);
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return new YandexPlaylistInfo(data!.Result.Kind, data.Result.Title, data.Result.TrackCount);
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}
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public async Task<string?> RefreshUserTokenAsync(string userId)
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{
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var user = await _db.Users.FindAsync(userId);
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if (user?.RefreshToken == null) return null;
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var newToken = await RefreshYandexTokenAsync(user.RefreshToken);
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user.AccessToken = newToken.access_token;
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user.RefreshToken = newToken.refresh_token;
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user.AccessTokenExpiresAt = DateTime.UtcNow.AddSeconds(newToken.expires_in);
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await _db.SaveChangesAsync();
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return newToken.access_token;
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}
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// Вспомогательные record
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private record YandexApiResponse<T>(T Result);
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private record YandexPlaylistData(string Kind);
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private record YandexPlaylistFull(string Kind, string Title, int TrackCount, List<YandexTrack> Tracks);
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private record YandexTrack(string Id, string Title, int DurationMs, List<YandexArtist> Artists, List<YandexAlbum> Albums);
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private record YandexArtist(string Name);
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private record YandexAlbum(string Title);
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}
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