using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Threading;
using System.Threading.Tasks;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using SpotifyAPI.Web.Enums;
using SpotifyAPI.Web.Models;

namespace SpotifyAPI.Web
{
  // ReSharper disable once InconsistentNaming
  public sealed class SpotifyWebAPI : IDisposable
  {
    private readonly SpotifyWebBuilder _builder;

    public SpotifyWebAPI() : this(null) { }

    public SpotifyWebAPI(ProxyConfig proxyConfig)
    {
      _builder = new SpotifyWebBuilder();
      UseAuth = true;
      WebClient = new SpotifyWebClient(proxyConfig)
      {
        JsonSettings =
        new JsonSerializerSettings
        {
        NullValueHandling = NullValueHandling.Ignore
        }
      };
    }

    public void Dispose()
    {
      WebClient.Dispose();
      GC.SuppressFinalize(this);
    }

    #region Configuration

    /// <summary>
    ///     The type of the <see cref="AccessToken"/>
    /// </summary>
    public string TokenType { get; set; }

    /// <summary>
    ///     A valid token issued by spotify. Used only when <see cref="UseAuth"/> is true
    /// </summary>
    public string AccessToken { get; set; }

    /// <summary>
    ///     If true, an authorization header based on <see cref="TokenType"/> and <see cref="AccessToken"/> will be used
    /// </summary>
    public bool UseAuth { get; set; }

    /// <summary>
    ///     A custom WebClient, used for Unit-Testing
    /// </summary>
    public IClient WebClient { get; set; }

    /// <summary>
    ///     Specifies after how many miliseconds should a failed request be retried.
    /// </summary>
    public int RetryAfter { get; set; } = 50;

    /// <summary>
    ///     Should a failed request (specified by <see cref="RetryErrorCodes"/> be automatically retried or not.
    /// </summary>
    public bool UseAutoRetry { get; set; } = false;

    /// <summary>
    ///     Maximum number of tries for one failed request.
    /// </summary>
    public int RetryTimes { get; set; } = 10;

    /// <summary>
    ///     Whether a failure of type "Too Many Requests" should use up one of the allocated retry attempts.
    /// </summary>
    public bool TooManyRequestsConsumesARetry { get; set; } = false;

    /// <summary>
    ///     Error codes that will trigger auto-retry if <see cref="UseAutoRetry"/> is enabled.
    /// </summary>
    public IEnumerable<int> RetryErrorCodes { get; set; } = new [] { 500, 502, 503 };

    #endregion Configuration

    #region Search

    /// <summary>
    ///     Get Spotify catalog information about artists, albums, tracks or playlists that match a keyword string.
    /// </summary>
    /// <param name="q">The search query's keywords (and optional field filters and operators), for example q=roadhouse+blues.</param>
    /// <param name="type">A list of item types to search across.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first result to return. Default: 0</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code or the string from_token.</param>
    /// <returns></returns>
    public SearchItem SearchItems(string q, SearchType type, int limit = 20, int offset = 0, string market = "")
    {
      return DownloadData<SearchItem>(_builder.SearchItems(q, type, limit, offset, market));
    }

    /// <summary>
    ///     Get Spotify catalog information about artists, albums, tracks or playlists that match a keyword string asynchronously.
    /// </summary>
    /// <param name="q">The search query's keywords (and optional field filters and operators), for example q=roadhouse+blues.</param>
    /// <param name="type">A list of item types to search across.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first result to return. Default: 0</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code or the string from_token.</param>
    /// <returns></returns>
    public Task<SearchItem> SearchItemsAsync(string q, SearchType type, int limit = 20, int offset = 0, string market = "")
    {
      return DownloadDataAsync<SearchItem>(_builder.SearchItems(q, type, limit, offset, market));
    }

    /// <summary>
    ///     Get Spotify catalog information about artists, albums, tracks or playlists that match a keyword string.
    /// </summary>
    /// <param name="q">The search query's keywords (and optional field filters and operators), for example q=roadhouse+blues. (properly escaped)</param>
    /// <param name="type">A list of item types to search across.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first result to return. Default: 0</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code or the string from_token.</param>
    /// <returns></returns>
    public SearchItem SearchItemsEscaped(string q, SearchType type, int limit = 20, int offset = 0, string market = "")
    {
      string escapedQuery = WebUtility.UrlEncode(q);
      return DownloadData<SearchItem>(_builder.SearchItems(escapedQuery, type, limit, offset, market));
    }

    /// <summary>
    ///     Get Spotify catalog information about artists, albums, tracks or playlists that match a keyword string asynchronously.
    /// </summary>
    /// <param name="q">The search query's keywords (and optional field filters and operators), for example q=roadhouse+blues. (properly escaped)</param>
    /// <param name="type">A list of item types to search across.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first result to return. Default: 0</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code or the string from_token.</param>
    /// <returns></returns>
    public Task<SearchItem> SearchItemsEscapedAsync(string q, SearchType type, int limit = 20, int offset = 0, string market = "")
    {
      string escapedQuery = WebUtility.UrlEncode(q);
      return DownloadDataAsync<SearchItem>(_builder.SearchItems(escapedQuery, type, limit, offset, market));
    }

    #endregion Search

    #region Albums

    /// <summary>
    ///     Get Spotify catalog information about an album’s tracks. Optional parameters can be used to limit the number of
    ///     tracks returned.
    /// </summary>
    /// <param name="id">The Spotify ID for the album.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first track to return. Default: 0 (the first object).</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public Paging<SimpleTrack> GetAlbumTracks(string id, int limit = 20, int offset = 0, string market = "")
    {
      return DownloadData<Paging<SimpleTrack>>(_builder.GetAlbumTracks(id, limit, offset, market));
    }

    /// <summary>
    ///     Get Spotify catalog information about an album’s tracks asynchronously. Optional parameters can be used to limit the number of
    ///     tracks returned.
    /// </summary>
    /// <param name="id">The Spotify ID for the album.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first track to return. Default: 0 (the first object).</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public Task<Paging<SimpleTrack>> GetAlbumTracksAsync(string id, int limit = 20, int offset = 0, string market = "")
    {
      return DownloadDataAsync<Paging<SimpleTrack>>(_builder.GetAlbumTracks(id, limit, offset, market));
    }

    /// <summary>
    ///     Get Spotify catalog information for a single album.
    /// </summary>
    /// <param name="id">The Spotify ID for the album.</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public FullAlbum GetAlbum(string id, string market = "")
    {
      return DownloadData<FullAlbum>(_builder.GetAlbum(id, market));
    }

    /// <summary>
    ///     Get Spotify catalog information for a single album asynchronously.
    /// </summary>
    /// <param name="id">The Spotify ID for the album.</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public Task<FullAlbum> GetAlbumAsync(string id, string market = "")
    {
      return DownloadDataAsync<FullAlbum>(_builder.GetAlbum(id, market));
    }

    /// <summary>
    ///     Get Spotify catalog information for multiple albums identified by their Spotify IDs.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs for the albums. Maximum: 20 IDs.</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public SeveralAlbums GetSeveralAlbums(List<string> ids, string market = "")
    {
      return DownloadData<SeveralAlbums>(_builder.GetSeveralAlbums(ids, market));
    }

    /// <summary>
    ///     Get Spotify catalog information for multiple albums identified by their Spotify IDs asynchrously.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs for the albums. Maximum: 20 IDs.</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public Task<SeveralAlbums> GetSeveralAlbumsAsync(List<string> ids, string market = "")
    {
      return DownloadDataAsync<SeveralAlbums>(_builder.GetSeveralAlbums(ids, market));
    }

    #endregion Albums

    #region Artists

    /// <summary>
    ///     Get Spotify catalog information for a single artist identified by their unique Spotify ID.
    /// </summary>
    /// <param name="id">The Spotify ID for the artist.</param>
    /// <returns></returns>
    public FullArtist GetArtist(string id)
    {
      return DownloadData<FullArtist>(_builder.GetArtist(id));
    }

    /// <summary>
    ///     Get Spotify catalog information for a single artist identified by their unique Spotify ID asynchronously.
    /// </summary>
    /// <param name="id">The Spotify ID for the artist.</param>
    /// <returns></returns>
    public Task<FullArtist> GetArtistAsync(string id)
    {
      return DownloadDataAsync<FullArtist>(_builder.GetArtist(id));
    }

    /// <summary>
    ///     Get Spotify catalog information about artists similar to a given artist. Similarity is based on analysis of the
    ///     Spotify community’s listening history.
    /// </summary>
    /// <param name="id">The Spotify ID for the artist.</param>
    /// <returns></returns>
    public SeveralArtists GetRelatedArtists(string id)
    {
      return DownloadData<SeveralArtists>(_builder.GetRelatedArtists(id));
    }

    /// <summary>
    ///     Get Spotify catalog information about artists similar to a given artist asynchronously. Similarity is based on analysis of the
    ///     Spotify community’s listening history.
    /// </summary>
    /// <param name="id">The Spotify ID for the artist.</param>
    /// <returns></returns>
    public Task<SeveralArtists> GetRelatedArtistsAsync(string id)
    {
      return DownloadDataAsync<SeveralArtists>(_builder.GetRelatedArtists(id));
    }

    /// <summary>
    ///     Get Spotify catalog information about an artist’s top tracks by country.
    /// </summary>
    /// <param name="id">The Spotify ID for the artist.</param>
    /// <param name="country">The country: an ISO 3166-1 alpha-2 country code.</param>
    /// <returns></returns>
    public SeveralTracks GetArtistsTopTracks(string id, string country)
    {
      return DownloadData<SeveralTracks>(_builder.GetArtistsTopTracks(id, country));
    }

    /// <summary>
    ///     Get Spotify catalog information about an artist’s top tracks by country asynchronously.
    /// </summary>
    /// <param name="id">The Spotify ID for the artist.</param>
    /// <param name="country">The country: an ISO 3166-1 alpha-2 country code.</param>
    /// <returns></returns>
    public Task<SeveralTracks> GetArtistsTopTracksAsync(string id, string country)
    {
      return DownloadDataAsync<SeveralTracks>(_builder.GetArtistsTopTracks(id, country));
    }

    /// <summary>
    ///     Get Spotify catalog information about an artist’s albums. Optional parameters can be specified in the query string
    ///     to filter and sort the response.
    /// </summary>
    /// <param name="id">The Spotify ID for the artist.</param>
    /// <param name="type">
    ///     A list of keywords that will be used to filter the response. If not supplied, all album types will
    ///     be returned
    /// </param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first album to return. Default: 0</param>
    /// <param name="market">
    ///     An ISO 3166-1 alpha-2 country code. Supply this parameter to limit the response to one particular
    ///     geographical market
    /// </param>
    /// <returns></returns>
    public Paging<SimpleAlbum> GetArtistsAlbums(string id, AlbumType type = AlbumType.All, int limit = 20, int offset = 0, string market = "")
    {
      return DownloadData<Paging<SimpleAlbum>>(_builder.GetArtistsAlbums(id, type, limit, offset, market));
    }

    /// <summary>
    ///     Get Spotify catalog information about an artist’s albums asynchronously. Optional parameters can be specified in the query string
    ///     to filter and sort the response.
    /// </summary>
    /// <param name="id">The Spotify ID for the artist.</param>
    /// <param name="type">
    ///     A list of keywords that will be used to filter the response. If not supplied, all album types will
    ///     be returned
    /// </param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first album to return. Default: 0</param>
    /// <param name="market">
    ///     An ISO 3166-1 alpha-2 country code. Supply this parameter to limit the response to one particular
    ///     geographical market
    /// </param>
    /// <returns></returns>
    public Task<Paging<SimpleAlbum>> GetArtistsAlbumsAsync(string id, AlbumType type = AlbumType.All, int limit = 20, int offset = 0, string market = "")
    {
      return DownloadDataAsync<Paging<SimpleAlbum>>(_builder.GetArtistsAlbums(id, type, limit, offset, market));
    }

    /// <summary>
    ///     Get Spotify catalog information for several artists based on their Spotify IDs.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs for the artists. Maximum: 50 IDs.</param>
    /// <returns></returns>
    public SeveralArtists GetSeveralArtists(List<string> ids)
    {
      return DownloadData<SeveralArtists>(_builder.GetSeveralArtists(ids));
    }

    /// <summary>
    ///     Get Spotify catalog information for several artists based on their Spotify IDs asynchronously.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs for the artists. Maximum: 50 IDs.</param>
    /// <returns></returns>
    public Task<SeveralArtists> GetSeveralArtistsAsync(List<string> ids)
    {
      return DownloadDataAsync<SeveralArtists>(_builder.GetSeveralArtists(ids));
    }

    #endregion Artists

    #region Browse

    /// <summary>
    ///     Get a list of Spotify featured playlists (shown, for example, on a Spotify player’s “Browse” tab).
    /// </summary>
    /// <param name="locale">
    ///     The desired language, consisting of a lowercase ISO 639 language code and an uppercase ISO 3166-1
    ///     alpha-2 country code, joined by an underscore.
    /// </param>
    /// <param name="country">A country: an ISO 3166-1 alpha-2 country code.</param>
    /// <param name="timestamp">A timestamp in ISO 8601 format</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first item to return. Default: 0</param>
    /// <remarks>AUTH NEEDED</remarks>
    public FeaturedPlaylists GetFeaturedPlaylists(string locale = "", string country = "", DateTime timestamp = default(DateTime), int limit = 20, int offset = 0)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetFeaturedPlaylists");
      return DownloadData<FeaturedPlaylists>(_builder.GetFeaturedPlaylists(locale, country, timestamp, limit, offset));
    }

    /// <summary>
    ///     Get a list of Spotify featured playlists asynchronously (shown, for example, on a Spotify player’s “Browse” tab).
    /// </summary>
    /// <param name="locale">
    ///     The desired language, consisting of a lowercase ISO 639 language code and an uppercase ISO 3166-1
    ///     alpha-2 country code, joined by an underscore.
    /// </param>
    /// <param name="country">A country: an ISO 3166-1 alpha-2 country code.</param>
    /// <param name="timestamp">A timestamp in ISO 8601 format</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first item to return. Default: 0</param>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<FeaturedPlaylists> GetFeaturedPlaylistsAsync(string locale = "", string country = "", DateTime timestamp = default(DateTime), int limit = 20, int offset = 0)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetFeaturedPlaylists");
      return DownloadDataAsync<FeaturedPlaylists>(_builder.GetFeaturedPlaylists(locale, country, timestamp, limit, offset));
    }

    /// <summary>
    ///     Get a list of new album releases featured in Spotify (shown, for example, on a Spotify player’s “Browse” tab).
    /// </summary>
    /// <param name="country">A country: an ISO 3166-1 alpha-2 country code.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first item to return. Default: 0</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public NewAlbumReleases GetNewAlbumReleases(string country = "", int limit = 20, int offset = 0)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetNewAlbumReleases");
      return DownloadData<NewAlbumReleases>(_builder.GetNewAlbumReleases(country, limit, offset));
    }

    /// <summary>
    ///     Get a list of new album releases featured in Spotify asynchronously (shown, for example, on a Spotify player’s “Browse” tab).
    /// </summary>
    /// <param name="country">A country: an ISO 3166-1 alpha-2 country code.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first item to return. Default: 0</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<NewAlbumReleases> GetNewAlbumReleasesAsync(string country = "", int limit = 20, int offset = 0)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetNewAlbumReleases");
      return DownloadDataAsync<NewAlbumReleases>(_builder.GetNewAlbumReleases(country, limit, offset));
    }

    /// <summary>
    ///     Get a list of categories used to tag items in Spotify (on, for example, the Spotify player’s “Browse” tab).
    /// </summary>
    /// <param name="country">
    ///     A country: an ISO 3166-1 alpha-2 country code. Provide this parameter if you want to narrow the
    ///     list of returned categories to those relevant to a particular country
    /// </param>
    /// <param name="locale">
    ///     The desired language, consisting of an ISO 639 language code and an ISO 3166-1 alpha-2 country
    ///     code, joined by an underscore
    /// </param>
    /// <param name="limit">The maximum number of categories to return. Default: 20. Minimum: 1. Maximum: 50. </param>
    /// <param name="offset">The index of the first item to return. Default: 0 (the first object).</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public CategoryList GetCategories(string country = "", string locale = "", int limit = 20, int offset = 0)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetCategories");
      return DownloadData<CategoryList>(_builder.GetCategories(country, locale, limit, offset));
    }

    /// <summary>
    ///     Get a list of categories used to tag items in Spotify asynchronously (on, for example, the Spotify player’s “Browse” tab).
    /// </summary>
    /// <param name="country">
    ///     A country: an ISO 3166-1 alpha-2 country code. Provide this parameter if you want to narrow the
    ///     list of returned categories to those relevant to a particular country
    /// </param>
    /// <param name="locale">
    ///     The desired language, consisting of an ISO 639 language code and an ISO 3166-1 alpha-2 country
    ///     code, joined by an underscore
    /// </param>
    /// <param name="limit">The maximum number of categories to return. Default: 20. Minimum: 1. Maximum: 50. </param>
    /// <param name="offset">The index of the first item to return. Default: 0 (the first object).</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<CategoryList> GetCategoriesAsync(string country = "", string locale = "", int limit = 20, int offset = 0)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetCategories");
      return DownloadDataAsync<CategoryList>(_builder.GetCategories(country, locale, limit, offset));
    }

    /// <summary>
    ///     Get a single category used to tag items in Spotify (on, for example, the Spotify player’s “Browse” tab).
    /// </summary>
    /// <param name="categoryId">The Spotify category ID for the category.</param>
    /// <param name="country">
    ///     A country: an ISO 3166-1 alpha-2 country code. Provide this parameter to ensure that the category
    ///     exists for a particular country.
    /// </param>
    /// <param name="locale">
    ///     The desired language, consisting of an ISO 639 language code and an ISO 3166-1 alpha-2 country
    ///     code, joined by an underscore
    /// </param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Category GetCategory(string categoryId, string country = "", string locale = "")
    {
      return DownloadData<Category>(_builder.GetCategory(categoryId, country, locale));
    }

    /// <summary>
    ///     Get a single category used to tag items in Spotify asynchronously (on, for example, the Spotify player’s “Browse” tab).
    /// </summary>
    /// <param name="categoryId">The Spotify category ID for the category.</param>
    /// <param name="country">
    ///     A country: an ISO 3166-1 alpha-2 country code. Provide this parameter to ensure that the category
    ///     exists for a particular country.
    /// </param>
    /// <param name="locale">
    ///     The desired language, consisting of an ISO 639 language code and an ISO 3166-1 alpha-2 country
    ///     code, joined by an underscore
    /// </param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<Category> GetCategoryAsync(string categoryId, string country = "", string locale = "")
    {
      return DownloadDataAsync<Category>(_builder.GetCategory(categoryId, country, locale));
    }

    /// <summary>
    ///     Get a list of Spotify playlists tagged with a particular category.
    /// </summary>
    /// <param name="categoryId">The Spotify category ID for the category.</param>
    /// <param name="country">A country: an ISO 3166-1 alpha-2 country code.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first item to return. Default: 0</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public CategoryPlaylist GetCategoryPlaylists(string categoryId, string country = "", int limit = 20, int offset = 0)
    {
      return DownloadData<CategoryPlaylist>(_builder.GetCategoryPlaylists(categoryId, country, limit, offset));
    }

    /// <summary>
    ///     Get a list of Spotify playlists tagged with a particular category asynchronously.
    /// </summary>
    /// <param name="categoryId">The Spotify category ID for the category.</param>
    /// <param name="country">A country: an ISO 3166-1 alpha-2 country code.</param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first item to return. Default: 0</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<CategoryPlaylist> GetCategoryPlaylistsAsync(string categoryId, string country = "", int limit = 20, int offset = 0)
    {
      return DownloadDataAsync<CategoryPlaylist>(_builder.GetCategoryPlaylists(categoryId, country, limit, offset));
    }

    /// <summary>
    ///     Create a playlist-style listening experience based on seed artists, tracks and genres.
    /// </summary>
    /// <param name="artistSeed">A comma separated list of Spotify IDs for seed artists.
    /// Up to 5 seed values may be provided in any combination of seed_artists, seed_tracks and seed_genres.
    /// </param>
    /// <param name="genreSeed">A comma separated list of any genres in the set of available genre seeds.
    /// Up to 5 seed values may be provided in any combination of seed_artists, seed_tracks and seed_genres.
    /// </param>
    /// <param name="trackSeed">A comma separated list of Spotify IDs for a seed track.
    /// Up to 5 seed values may be provided in any combination of seed_artists, seed_tracks and seed_genres.
    /// </param>
    /// <param name="target">Tracks with the attribute values nearest to the target values will be preferred.</param>
    /// <param name="min">For each tunable track attribute, a hard floor on the selected track attribute’s value can be provided</param>
    /// <param name="max">For each tunable track attribute, a hard ceiling on the selected track attribute’s value can be provided</param>
    /// <param name="limit">The target size of the list of recommended tracks. Default: 20. Minimum: 1. Maximum: 100.
    /// For seeds with unusually small pools or when highly restrictive filtering is applied, it may be impossible to generate the requested number of recommended tracks.
    /// </param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.
    /// Because min_*, max_* and target_* are applied to pools before relinking, the generated results may not precisely match the filters applied.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Recommendations GetRecommendations(List<string> artistSeed = null, List<string> genreSeed = null, List<string> trackSeed = null,
      TuneableTrack target = null, TuneableTrack min = null, TuneableTrack max = null, int limit = 20, string market = "")
    {
      return DownloadData<Recommendations>(_builder.GetRecommendations(artistSeed, genreSeed, trackSeed, target, min, max, limit, market));
    }

    /// <summary>
    ///     Create a playlist-style listening experience based on seed artists, tracks and genres asynchronously.
    /// </summary>
    /// <param name="artistSeed">A comma separated list of Spotify IDs for seed artists.
    /// Up to 5 seed values may be provided in any combination of seed_artists, seed_tracks and seed_genres.
    /// </param>
    /// <param name="genreSeed">A comma separated list of any genres in the set of available genre seeds.
    /// Up to 5 seed values may be provided in any combination of seed_artists, seed_tracks and seed_genres.
    /// </param>
    /// <param name="trackSeed">A comma separated list of Spotify IDs for a seed track.
    /// Up to 5 seed values may be provided in any combination of seed_artists, seed_tracks and seed_genres.
    /// </param>
    /// <param name="target">Tracks with the attribute values nearest to the target values will be preferred.</param>
    /// <param name="min">For each tunable track attribute, a hard floor on the selected track attribute’s value can be provided</param>
    /// <param name="max">For each tunable track attribute, a hard ceiling on the selected track attribute’s value can be provided</param>
    /// <param name="limit">The target size of the list of recommended tracks. Default: 20. Minimum: 1. Maximum: 100.
    /// For seeds with unusually small pools or when highly restrictive filtering is applied, it may be impossible to generate the requested number of recommended tracks.
    /// </param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.
    /// Because min_*, max_* and target_* are applied to pools before relinking, the generated results may not precisely match the filters applied.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<Recommendations> GetRecommendationsAsync(List<string> artistSeed = null, List<string> genreSeed = null, List<string> trackSeed = null,
      TuneableTrack target = null, TuneableTrack min = null, TuneableTrack max = null, int limit = 20, string market = "")
    {
      return DownloadDataAsync<Recommendations>(_builder.GetRecommendations(artistSeed, genreSeed, trackSeed, target, min, max, limit, market));
    }

    /// <summary>
    ///     Retrieve a list of available genres seed parameter values for recommendations.
    /// </summary>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public RecommendationSeedGenres GetRecommendationSeedsGenres()
    {
      return DownloadData<RecommendationSeedGenres>(_builder.GetRecommendationSeedsGenres());
    }

    /// <summary>
    ///     Retrieve a list of available genres seed parameter values for recommendations asynchronously.
    /// </summary>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<RecommendationSeedGenres> GetRecommendationSeedsGenresAsync()
    {
      return DownloadDataAsync<RecommendationSeedGenres>(_builder.GetRecommendationSeedsGenres());
    }

    #endregion Browse

    #region Follow

    /// <summary>
    ///     Get the current user’s followed artists.
    /// </summary>
    /// <param name="followType">The ID type: currently only artist is supported. </param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50. </param>
    /// <param name="after">The last artist ID retrieved from the previous request.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public FollowedArtists GetFollowedArtists(FollowType followType, int limit = 20, string after = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetFollowedArtists");
      return DownloadData<FollowedArtists>(_builder.GetFollowedArtists(limit, after));
    }

    /// <summary>
    ///     Get the current user’s followed artists asynchronously.
    /// </summary>
    /// <param name="followType">The ID type: currently only artist is supported. </param>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50. </param>
    /// <param name="after">The last artist ID retrieved from the previous request.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<FollowedArtists> GetFollowedArtistsAsync(FollowType followType, int limit = 20, string after = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetFollowedArtists");
      return DownloadDataAsync<FollowedArtists>(_builder.GetFollowedArtists(limit, after));
    }

    /// <summary>
    ///     Add the current user as a follower of one or more artists or other Spotify users.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="ids">A list of the artist or the user Spotify IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse Follow(FollowType followType, List<string> ids)
    {
      JObject ob = new JObject
      { { "ids", new JArray(ids) }
      };
      return UploadData<ErrorResponse>(_builder.Follow(followType), ob.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Add the current user as a follower of one or more artists or other Spotify users asynchronously.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="ids">A list of the artist or the user Spotify IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> FollowAsync(FollowType followType, List<string> ids)
    {
      JObject ob = new JObject
      { { "ids", new JArray(ids) }
      };
      return await UploadDataAsync<ErrorResponse>(_builder.Follow(followType),
        ob.ToString(Formatting.None), "PUT").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Add the current user as a follower of one or more artists or other Spotify users.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="id">Artists or the Users Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse Follow(FollowType followType, string id)
    {
      return Follow(followType, new List<string> { id });
    }

    /// <summary>
    ///     Add the current user as a follower of one or more artists or other Spotify users asynchronously.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="id">Artists or the Users Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ErrorResponse> FollowAsync(FollowType followType, string id)
    {
      return FollowAsync(followType, new List<string> { id });
    }

    /// <summary>
    ///     Remove the current user as a follower of one or more artists or other Spotify users.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="ids">A list of the artist or the user Spotify IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse Unfollow(FollowType followType, List<string> ids)
    {
      JObject ob = new JObject
      { { "ids", new JArray(ids) }
      };
      return UploadData<ErrorResponse>(_builder.Unfollow(followType), ob.ToString(Formatting.None), "DELETE") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Remove the current user as a follower of one or more artists or other Spotify users asynchronously.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="ids">A list of the artist or the user Spotify IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> UnfollowAsync(FollowType followType, List<string> ids)
    {
      JObject ob = new JObject
      { { "ids", new JArray(ids) }
      };
      return await UploadDataAsync<ErrorResponse>(_builder.Unfollow(followType), ob.ToString(Formatting.None), "DELETE").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Remove the current user as a follower of one or more artists or other Spotify users.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="id">Artists or the Users Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse Unfollow(FollowType followType, string id)
    {
      return Unfollow(followType, new List<string> { id });
    }

    /// <summary>
    ///     Remove the current user as a follower of one or more artists or other Spotify users asynchronously.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="id">Artists or the Users Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ErrorResponse> UnfollowAsync(FollowType followType, string id)
    {
      return UnfollowAsync(followType, new List<string> { id });
    }

    /// <summary>
    ///     Check to see if the current user is following one or more artists or other Spotify users.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="ids">A list of the artist or the user Spotify IDs to check</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ListResponse<bool> IsFollowing(FollowType followType, List<string> ids)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for IsFollowing");

      string url = _builder.IsFollowing(followType, ids);
      return DownloadList<bool>(url);
    }

    /// <summary>
    ///     Check to see if the current user is following one or more artists or other Spotify users asynchronously.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="ids">A list of the artist or the user Spotify IDs to check</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ListResponse<bool>> IsFollowingAsync(FollowType followType, List<string> ids)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for IsFollowing");

      string url = _builder.IsFollowing(followType, ids);
      return DownloadListAsync<bool>(url);
    }

    /// <summary>
    ///     Check to see if the current user is following one artist or another Spotify user.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="id">Artists or the Users Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ListResponse<bool> IsFollowing(FollowType followType, string id)
    {
      return IsFollowing(followType, new List<string> { id });
    }

    /// <summary>
    ///     Check to see if the current user is following one artist or another Spotify user asynchronously.
    /// </summary>
    /// <param name="followType">The ID type: either artist or user.</param>
    /// <param name="id">Artists or the Users Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ListResponse<bool>> IsFollowingAsync(FollowType followType, string id)
    {
      return IsFollowingAsync(followType, new List<string> { id });
    }

    /// <summary>
    ///     Add the current user as a follower of a playlist.
    /// </summary>
    /// <param name="playlistId">
    ///     The Spotify ID of the playlist. Any playlist can be followed, regardless of its public/private
    ///     status, as long as you know its playlist ID.
    /// </param>
    /// <param name="showPublic">
    ///     If true the playlist will be included in user's public playlists, if false it will remain
    ///     private.
    /// </param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse FollowPlaylist(string ownerId, string playlistId, bool showPublic = true)
    {
      JObject body = new JObject
      { { "public", showPublic }
      };
      return UploadData<ErrorResponse>(_builder.FollowPlaylist(playlistId), body.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Add the current user as a follower of a playlist asynchronously.
    /// </summary>
    /// <param name="playlistId">
    ///     The Spotify ID of the playlist. Any playlist can be followed, regardless of its public/private
    ///     status, as long as you know its playlist ID.
    /// </param>
    /// <param name="showPublic">
    ///     If true the playlist will be included in user's public playlists, if false it will remain
    ///     private.
    /// </param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ErrorResponse> FollowPlaylistAsync(string playlistId, bool showPublic = true)
    {
      JObject body = new JObject
      { { "public", showPublic }
      };
      return UploadDataAsync<ErrorResponse>(_builder.FollowPlaylist(playlistId), body.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Remove the current user as a follower of a playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID of the playlist that is to be no longer followed.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse UnfollowPlaylist(string playlistId)
    {
      return UploadData<ErrorResponse>(_builder.UnfollowPlaylist(playlistId), "", "DELETE");
    }

    /// <summary>
    ///     Remove the current user as a follower of a playlist asynchronously.
    /// </summary>
    /// <param name="ownerId">The Spotify user ID of the person who owns the playlist.</param>
    /// <param name="playlistId">The Spotify ID of the playlist that is to be no longer followed.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ErrorResponse> UnfollowPlaylistAsync(string playlistId)
    {
      return UploadDataAsync<ErrorResponse>(_builder.UnfollowPlaylist(playlistId), "", "DELETE");
    }

    /// <summary>
    ///     Check to see if one or more Spotify users are following a specified playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID of the playlist.</param>
    /// <param name="ids">A list of Spotify User IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ListResponse<bool> IsFollowingPlaylist(string playlistId, List<string> ids)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for IsFollowingPlaylist");

      string url = _builder.IsFollowingPlaylist(playlistId, ids);
      return DownloadList<bool>(url);
    }

    /// <summary>
    ///     Check to see if one or more Spotify users are following a specified playlist asynchronously.
    /// </summary>
    /// <param name="playlistId">The Spotify ID of the playlist.</param>
    /// <param name="ids">A list of Spotify User IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ListResponse<bool>> IsFollowingPlaylistAsync(string playlistId, List<string> ids)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for IsFollowingPlaylist");

      string url = _builder.IsFollowingPlaylist(playlistId, ids);
      return DownloadListAsync<bool>(url);
    }

    /// <summary>
    ///     Check to see if one or more Spotify users are following a specified playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID of the playlist.</param>
    /// <param name="id">A Spotify User ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ListResponse<bool> IsFollowingPlaylist(string playlistId, string id)
    {
      return IsFollowingPlaylist(playlistId, new List<string> { id });
    }

    /// <summary>
    ///     Check to see if one or more Spotify users are following a specified playlist asynchronously.
    /// </summary>
    /// <param name="playlistId">The Spotify ID of the playlist.</param>
    /// <param name="id">A Spotify User ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ListResponse<bool>> IsFollowingPlaylistAsync(string playlistId, string id)
    {
      return IsFollowingPlaylistAsync(playlistId, new List<string> { id });
    }

    #endregion Follow

    #region Library

    /// <summary>
    ///     Save one or more tracks to the current user’s “Your Music” library.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse SaveTracks(List<string> ids)
    {
      JArray array = new JArray(ids);
      return UploadData<ErrorResponse>(_builder.SaveTracks(), array.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Save one or more tracks to the current user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> SaveTracksAsync(List<string> ids)
    {
      JArray array = new JArray(ids);
      return await UploadDataAsync<ErrorResponse>(_builder.SaveTracks(), array.ToString(Formatting.None), "PUT").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Save one track to the current user’s “Your Music” library.
    /// </summary>
    /// <param name="id">A Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse SaveTrack(string id)
    {
      return SaveTracks(new List<string> { id });
    }

    /// <summary>
    ///     Save one track to the current user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="id">A Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ErrorResponse> SaveTrackAsync(string id)
    {
      return SaveTracksAsync(new List<string> { id });
    }

    /// <summary>
    ///     Get a list of the songs saved in the current Spotify user’s “Your Music” library.
    /// </summary>
    /// <param name="limit">The maximum number of objects to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Paging<SavedTrack> GetSavedTracks(int limit = 20, int offset = 0, string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetSavedTracks");
      return DownloadData<Paging<SavedTrack>>(_builder.GetSavedTracks(limit, offset, market));
    }

    /// <summary>
    ///     Get a list of the songs saved in the current Spotify user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="limit">The maximum number of objects to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<Paging<SavedTrack>> GetSavedTracksAsync(int limit = 20, int offset = 0, string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetSavedTracks");
      return DownloadDataAsync<Paging<SavedTrack>>(_builder.GetSavedTracks(limit, offset, market));
    }

    /// <summary>
    ///     Remove one or more tracks from the current user’s “Your Music” library.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse RemoveSavedTracks(List<string> ids)
    {
      JArray array = new JArray(ids);
      return UploadData<ErrorResponse>(_builder.RemoveSavedTracks(), array.ToString(Formatting.None), "DELETE") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Remove one or more tracks from the current user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> RemoveSavedTracksAsync(List<string> ids)
    {
      JArray array = new JArray(ids);
      return await UploadDataAsync<ErrorResponse>(_builder.RemoveSavedTracks(), array.ToString(Formatting.None), "DELETE").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Check if one or more tracks is already saved in the current Spotify user’s “Your Music” library.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ListResponse<bool> CheckSavedTracks(List<string> ids)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for CheckSavedTracks");

      string url = _builder.CheckSavedTracks(ids);
      return DownloadList<bool>(url);
    }

    /// <summary>
    ///     Check if one or more tracks is already saved in the current Spotify user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ListResponse<bool>> CheckSavedTracksAsync(List<string> ids)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for CheckSavedTracks");
      string url = _builder.CheckSavedTracks(ids);
      return DownloadListAsync<bool>(url);
    }

    /// <summary>
    ///     Save one or more albums to the current user’s “Your Music” library.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse SaveAlbums(List<string> ids)
    {
      JArray array = new JArray(ids);
      return UploadData<ErrorResponse>(_builder.SaveAlbums(), array.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Save one or more albums to the current user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> SaveAlbumsAsync(List<string> ids)
    {
      JArray array = new JArray(ids);
      return await UploadDataAsync<ErrorResponse>(_builder.SaveAlbums(), array.ToString(Formatting.None), "PUT").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Save one album to the current user’s “Your Music” library.
    /// </summary>
    /// <param name="id">A Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse SaveAlbum(string id)
    {
      return SaveAlbums(new List<string> { id });
    }

    /// <summary>
    ///     Save one album to the current user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="id">A Spotify ID</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ErrorResponse> SaveAlbumAsync(string id)
    {
      return SaveAlbumsAsync(new List<string> { id });
    }

    /// <summary>
    ///     Get a list of the albums saved in the current Spotify user’s “Your Music” library.
    /// </summary>
    /// <param name="limit">The maximum number of objects to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Paging<SavedAlbum> GetSavedAlbums(int limit = 20, int offset = 0, string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetSavedAlbums");
      return DownloadData<Paging<SavedAlbum>>(_builder.GetSavedAlbums(limit, offset, market));
    }

    /// <summary>
    ///     Get a list of the albums saved in the current Spotify user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="limit">The maximum number of objects to return. Default: 20. Minimum: 1. Maximum: 50.</param>
    /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<Paging<SavedAlbum>> GetSavedAlbumsAsync(int limit = 20, int offset = 0, string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetSavedAlbumsAsync");
      return DownloadDataAsync<Paging<SavedAlbum>>(_builder.GetSavedAlbums(limit, offset, market));
    }

    /// <summary>
    ///     Remove one or more albums from the current user’s “Your Music” library.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse RemoveSavedAlbums(List<string> ids)
    {
      JArray array = new JArray(ids);
      return UploadData<ErrorResponse>(_builder.RemoveSavedAlbums(), array.ToString(Formatting.None), "DELETE") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Remove one or more albums from the current user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> RemoveSavedAlbumsAsync(List<string> ids)
    {
      JArray array = new JArray(ids);
      return await UploadDataAsync<ErrorResponse>(_builder.RemoveSavedAlbums(), array.ToString(Formatting.None), "DELETE").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Check if one or more albums is already saved in the current Spotify user’s “Your Music” library.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ListResponse<bool> CheckSavedAlbums(List<string> ids)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for CheckSavedTracks");

      string url = _builder.CheckSavedAlbums(ids);
      return DownloadList<bool>(url);
    }

    /// <summary>
    ///     Check if one or more albums is already saved in the current Spotify user’s “Your Music” library asynchronously.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ListResponse<bool>> CheckSavedAlbumsAsync(List<string> ids)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for CheckSavedAlbumsAsync");
      string url = _builder.CheckSavedAlbums(ids);
      return DownloadListAsync<bool>(url);
    }

    #endregion Library

    #region Personalization

    /// <summary>
    ///     Get the current user’s top tracks based on calculated affinity.
    /// </summary>
    /// <param name="timeRange">Over what time frame the affinities are computed.
    /// Valid values: long_term (calculated from several years of data and including all new data as it becomes available),
    /// medium_term (approximately last 6 months), short_term (approximately last 4 weeks). </param>
    /// <param name="limit">The number of entities to return. Default: 20. Minimum: 1. Maximum: 50</param>
    /// <param name="offest">The index of the first entity to return. Default: 0 (i.e., the first track). Use with limit to get the next set of entities.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Paging<FullTrack> GetUsersTopTracks(TimeRangeType timeRange = TimeRangeType.MediumTerm, int limit = 20, int offest = 0)
    {
      return DownloadData<Paging<FullTrack>>(_builder.GetUsersTopTracks(timeRange, limit, offest));
    }

    /// <summary>
    ///     Get the current user’s top tracks based on calculated affinity asynchronously.
    /// </summary>
    /// <param name="timeRange">Over what time frame the affinities are computed.
    /// Valid values: long_term (calculated from several years of data and including all new data as it becomes available),
    /// medium_term (approximately last 6 months), short_term (approximately last 4 weeks). </param>
    /// <param name="limit">The number of entities to return. Default: 20. Minimum: 1. Maximum: 50</param>
    /// <param name="offest">The index of the first entity to return. Default: 0 (i.e., the first track). Use with limit to get the next set of entities.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<Paging<FullTrack>> GetUsersTopTracksAsync(TimeRangeType timeRange = TimeRangeType.MediumTerm, int limit = 20, int offest = 0)
    {
      return DownloadDataAsync<Paging<FullTrack>>(_builder.GetUsersTopTracks(timeRange, limit, offest));
    }

    /// <summary>
    ///     Get the current user’s top artists based on calculated affinity.
    /// </summary>
    /// <param name="timeRange">Over what time frame the affinities are computed.
    /// Valid values: long_term (calculated from several years of data and including all new data as it becomes available),
    /// medium_term (approximately last 6 months), short_term (approximately last 4 weeks). </param>
    /// <param name="limit">The number of entities to return. Default: 20. Minimum: 1. Maximum: 50</param>
    /// <param name="offest">The index of the first entity to return. Default: 0 (i.e., the first track). Use with limit to get the next set of entities.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Paging<FullArtist> GetUsersTopArtists(TimeRangeType timeRange = TimeRangeType.MediumTerm, int limit = 20, int offest = 0)
    {
      return DownloadData<Paging<FullArtist>>(_builder.GetUsersTopArtists(timeRange, limit, offest));
    }

    /// <summary>
    ///     Get the current user’s top artists based on calculated affinity asynchronously.
    /// </summary>
    /// <param name="timeRange">Over what time frame the affinities are computed.
    /// Valid values: long_term (calculated from several years of data and including all new data as it becomes available),
    /// medium_term (approximately last 6 months), short_term (approximately last 4 weeks). </param>
    /// <param name="limit">The number of entities to return. Default: 20. Minimum: 1. Maximum: 50</param>
    /// <param name="offest">The index of the first entity to return. Default: 0 (i.e., the first track). Use with limit to get the next set of entities.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<Paging<FullArtist>> GetUsersTopArtistsAsync(TimeRangeType timeRange = TimeRangeType.MediumTerm, int limit = 20, int offest = 0)
    {
      return DownloadDataAsync<Paging<FullArtist>>(_builder.GetUsersTopArtists(timeRange, limit, offest));
    }

    /// <summary>
    ///     Get tracks from the current user’s recent play history.
    /// </summary>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50. </param>
    /// <param name="after">A Unix timestamp in milliseconds. Returns all items after (but not including) this cursor position. If after is specified, before must not be specified.</param>
    /// <param name="before">A Unix timestamp in milliseconds. Returns all items before (but not including) this cursor position. If before is specified, after must not be specified.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public CursorPaging<PlayHistory> GetUsersRecentlyPlayedTracks(int limit = 20, DateTime? after = null,
      DateTime? before = null)
    {
      return DownloadData<CursorPaging<PlayHistory>>(_builder.GetUsersRecentlyPlayedTracks(limit, after, before));
    }

    /// <summary>
    ///     Get tracks from the current user’s recent play history asynchronously
    /// </summary>
    /// <param name="limit">The maximum number of items to return. Default: 20. Minimum: 1. Maximum: 50. </param>
    /// <param name="after">A Unix timestamp in milliseconds. Returns all items after (but not including) this cursor position. If after is specified, before must not be specified.</param>
    /// <param name="before">A Unix timestamp in milliseconds. Returns all items before (but not including) this cursor position. If before is specified, after must not be specified.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<CursorPaging<PlayHistory>> GetUsersRecentlyPlayedTracksAsync(int limit = 20, DateTime? after = null,
      DateTime? before = null)
    {
      return DownloadDataAsync<CursorPaging<PlayHistory>>(_builder.GetUsersRecentlyPlayedTracks(limit, after, before));
    }

    #endregion

    #region Playlists

    /// <summary>
    ///     Get a list of the playlists owned or followed by a Spotify user.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="limit">The maximum number of playlists to return. Default: 20. Minimum: 1. Maximum: 50. </param>
    /// <param name="offset">The index of the first playlist to return. Default: 0 (the first object)</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Paging<SimplePlaylist> GetUserPlaylists(string userId, int limit = 20, int offset = 0)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetUserPlaylists");
      return DownloadData<Paging<SimplePlaylist>>(_builder.GetUserPlaylists(userId, limit, offset));
    }

    /// <summary>
    ///     Get a list of the playlists owned or followed by a Spotify user asynchronously.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="limit">The maximum number of playlists to return. Default: 20. Minimum: 1. Maximum: 50. </param>
    /// <param name="offset">The index of the first playlist to return. Default: 0 (the first object)</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<Paging<SimplePlaylist>> GetUserPlaylistsAsync(string userId, int limit = 20, int offset = 0)
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetUserPlaylists");
      return DownloadDataAsync<Paging<SimplePlaylist>>(_builder.GetUserPlaylists(userId, limit, offset));
    }

    /// <summary>
    ///     Get a playlist owned by a Spotify user.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="fields">
    ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
    ///     returned.
    /// </param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling GetPlaylist with a userId is deprecated, remove the parameter")]
    public FullPlaylist GetPlaylist(string userId, string playlistId, string fields = "", string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPlaylist");
      return DownloadData<FullPlaylist>(_builder.GetPlaylist(userId, playlistId, fields, market));
    }

    /// <summary>
    ///     Get a playlist owned by a Spotify user.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="fields">
    ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
    ///     returned.
    /// </param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public FullPlaylist GetPlaylist(string playlistId, string fields = "", string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPlaylist");
      return DownloadData<FullPlaylist>(_builder.GetPlaylist(playlistId, fields, market));
    }

    /// <summary>
    ///     Get a playlist owned by a Spotify user asynchronously.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="fields">
    ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
    ///     returned.
    /// </param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling GetPlaylist with a userId is deprecated, remove the parameter")]
    public Task<FullPlaylist> GetPlaylistAsync(string userId, string playlistId, string fields = "", string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPlaylist");
      return DownloadDataAsync<FullPlaylist>(_builder.GetPlaylist(userId, playlistId, fields, market));
    }

    /// <summary>
    ///     Get a playlist owned by a Spotify user asynchronously.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="fields">
    ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
    ///     returned.
    /// </param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<FullPlaylist> GetPlaylistAsync(string playlistId, string fields = "", string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPlaylist");
      return DownloadDataAsync<FullPlaylist>(_builder.GetPlaylist(playlistId, fields, market));
    }

    /// <summary>
    ///     Get full details of the tracks of a playlist owned by a Spotify user.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="fields">
    ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
    ///     returned.
    /// </param>
    /// <param name="limit">The maximum number of tracks to return. Default: 100. Minimum: 1. Maximum: 100.</param>
    /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling GetPlaylistTracks with a userId is deprecated, remove the parameter")]
    public Paging<PlaylistTrack> GetPlaylistTracks(string userId, string playlistId, string fields = "", int limit = 100, int offset = 0, string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPlaylistTracks");
      return DownloadData<Paging<PlaylistTrack>>(_builder.GetPlaylistTracks(userId, playlistId, fields, limit, offset, market));
    }

    /// <summary>
    ///     Get full details of the tracks of a playlist owned by a Spotify user.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="fields">
    ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
    ///     returned.
    /// </param>
    /// <param name="limit">The maximum number of tracks to return. Default: 100. Minimum: 1. Maximum: 100.</param>
    /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Paging<PlaylistTrack> GetPlaylistTracks(string playlistId, string fields = "", int limit = 100, int offset = 0, string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPlaylistTracks");
      return DownloadData<Paging<PlaylistTrack>>(_builder.GetPlaylistTracks(playlistId, fields, limit, offset, market));
    }

    /// <summary>
    ///     Get full details of the tracks of a playlist owned by a Spotify user asyncronously.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="fields">
    ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
    ///     returned.
    /// </param>
    /// <param name="limit">The maximum number of tracks to return. Default: 100. Minimum: 1. Maximum: 100.</param>
    /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling GetPlaylistTracks with a userId is deprecated, remove the parameter")]
    public Task<Paging<PlaylistTrack>> GetPlaylistTracksAsync(string userId, string playlistId, string fields = "", int limit = 100, int offset = 0, string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPlaylistTracks");
      return DownloadDataAsync<Paging<PlaylistTrack>>(_builder.GetPlaylistTracks(userId, playlistId, fields, limit, offset, market));
    }

    /// <summary>
    ///     Get full details of the tracks of a playlist owned by a Spotify user asyncronously.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="fields">
    ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
    ///     returned.
    /// </param>
    /// <param name="limit">The maximum number of tracks to return. Default: 100. Minimum: 1. Maximum: 100.</param>
    /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<Paging<PlaylistTrack>> GetPlaylistTracksAsync(string playlistId, string fields = "", int limit = 100, int offset = 0, string market = "")
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPlaylistTracks");
      return DownloadDataAsync<Paging<PlaylistTrack>>(_builder.GetPlaylistTracks(playlistId, fields, limit, offset, market));
    }

    /// <summary>
    ///     Create a playlist for a Spotify user. (The playlist will be empty until you add tracks.)
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistName">
    ///     The name for the new playlist, for example "Your Coolest Playlist". This name does not need
    ///     to be unique.
    /// </param>
    /// <param name="isPublic">
    ///     default true. If true the playlist will be public, if false it will be private. To be able to
    ///     create private playlists, the user must have granted the playlist-modify-private scope.
    /// </param>
    /// <param name="isCollaborative">If true the playlist will become collaborative and other users will be able to modify the playlist in their Spotify client.
    /// Note: You can only set collaborative to true on non-public playlists.</param>
    /// <param name="playlistDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public FullPlaylist CreatePlaylist(string userId, string playlistName, bool isPublic = true, bool isCollaborative = false, string playlistDescription = "")
    {
      JObject body = new JObject
      { { "name", playlistName }, { "public", isPublic }, { "collaborative", isCollaborative }, { "description", playlistDescription }
      };
      return UploadData<FullPlaylist>(_builder.CreatePlaylist(userId, playlistName, isPublic), body.ToString(Formatting.None));
    }

    /// <summary>
    ///     Create a playlist for a Spotify user asynchronously. (The playlist will be empty until you add tracks.)
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistName">
    ///     The name for the new playlist, for example "Your Coolest Playlist". This name does not need
    ///     to be unique.
    /// </param>
    /// <param name="isPublic">
    ///     default true. If true the playlist will be public, if false it will be private. To be able to
    ///     create private playlists, the user must have granted the playlist-modify-private scope.
    /// </param>
    /// <param name="isCollaborative">If true the playlist will become collaborative and other users will be able to modify the playlist in their Spotify client.
    /// Note: You can only set collaborative to true on non-public playlists.</param>
    /// <param name="playlistDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<FullPlaylist> CreatePlaylistAsync(string userId, string playlistName, bool isPublic = true, bool isCollaborative = false, string playlistDescription = "")
    {
      JObject body = new JObject
      { { "name", playlistName }, { "public", isPublic }, { "collaborative", isCollaborative }, { "description", playlistDescription }
      };
      return UploadDataAsync<FullPlaylist>(_builder.CreatePlaylist(userId, playlistName, isPublic), body.ToString(Formatting.None));
    }

    /// <summary>
    ///     Change a playlist’s name and public/private state. (The user must, of course, own the playlist.)
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="newName">The new name for the playlist, for example "My New Playlist Title".</param>
    /// <param name="newPublic">If true the playlist will be public, if false it will be private.</param>
    /// <param name="newCollaborative">If true the playlist will become collaborative and other users will be able to modify the playlist in their Spotify client.
    /// Note: You can only set collaborative to true on non-public playlists.</param>
    /// <param name="newDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling UpdatePlaylist with a userId is deprecated, remove the parameter")]
    public ErrorResponse UpdatePlaylist(string userId, string playlistId, string newName = null, bool? newPublic = null, bool? newCollaborative = null, string newDescription = null)
    {
      JObject body = new JObject();
      if (newName != null)
        body.Add("name", newName);
      if (newPublic != null)
        body.Add("public", newPublic);
      if (newCollaborative != null)
        body.Add("collaborative", newCollaborative);
      if (newDescription != null)
        body.Add("description", newDescription);
      return UploadData<ErrorResponse>(_builder.UpdatePlaylist(userId, playlistId), body.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Change a playlist’s name and public/private state. (The user must, of course, own the playlist.)
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="newName">The new name for the playlist, for example "My New Playlist Title".</param>
    /// <param name="newPublic">If true the playlist will be public, if false it will be private.</param>
    /// <param name="newCollaborative">If true the playlist will become collaborative and other users will be able to modify the playlist in their Spotify client.
    /// Note: You can only set collaborative to true on non-public playlists.</param>
    /// <param name="newDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse UpdatePlaylist(string playlistId, string newName = null, bool? newPublic = null, bool? newCollaborative = null, string newDescription = null)
    {
      JObject body = new JObject();
      if (newName != null)
        body.Add("name", newName);
      if (newPublic != null)
        body.Add("public", newPublic);
      if (newCollaborative != null)
        body.Add("collaborative", newCollaborative);
      if (newDescription != null)
        body.Add("description", newDescription);
      return UploadData<ErrorResponse>(_builder.UpdatePlaylist(playlistId), body.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Change a playlist’s name and public/private state asynchronously. (The user must, of course, own the playlist.)
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="newName">The new name for the playlist, for example "My New Playlist Title".</param>
    /// <param name="newPublic">If true the playlist will be public, if false it will be private.</param>
    /// <param name="newCollaborative">If true the playlist will become collaborative and other users will be able to modify the playlist in their Spotify client. Note: You can only set collaborative to true on non-public playlists.</param>
    /// <param name="newDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling UpdatePlaylist with a userId is deprecated, remove the parameter")]
    public async Task<ErrorResponse> UpdatePlaylistAsync(string userId, string playlistId, string newName = null, bool? newPublic = null, bool? newCollaborative = null, string newDescription = null)
    {
      JObject body = new JObject();
      if (newName != null)
        body.Add("name", newName);
      if (newPublic != null)
        body.Add("public", newPublic);
      if (newCollaborative != null)
        body.Add("collaborative", newCollaborative);
      if (newDescription != null)
        body.Add("description", newDescription);
      return await UploadDataAsync<ErrorResponse>(_builder.UpdatePlaylist(userId, playlistId), body.ToString(Formatting.None), "PUT").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Change a playlist’s name and public/private state asynchronously. (The user must, of course, own the playlist.)
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="newName">The new name for the playlist, for example "My New Playlist Title".</param>
    /// <param name="newPublic">If true the playlist will be public, if false it will be private.</param>
    /// <param name="newCollaborative">If true the playlist will become collaborative and other users will be able to modify the playlist in their Spotify client. Note: You can only set collaborative to true on non-public playlists.</param>
    /// <param name="newDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> UpdatePlaylistAsync(string playlistId, string newName = null, bool? newPublic = null, bool? newCollaborative = null, string newDescription = null)
    {
      JObject body = new JObject();
      if (newName != null)
        body.Add("name", newName);
      if (newPublic != null)
        body.Add("public", newPublic);
      if (newCollaborative != null)
        body.Add("collaborative", newCollaborative);
      if (newDescription != null)
        body.Add("description", newDescription);
      return await UploadDataAsync<ErrorResponse>(_builder.UpdatePlaylist(playlistId), body.ToString(Formatting.None), "PUT").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Change a playlist’s name and public/private state. (The user must, of course, own the playlist.)
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="base64EncodedJpgImage">The image as a base64 encoded string</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse UploadPlaylistImage(string userId, string playlistId, string base64EncodedJpgImage)
    {
      return UploadData<ErrorResponse>(_builder.UploadPlaylistImage(userId, playlistId), base64EncodedJpgImage, "PUT") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Change a playlist’s name and public/private state asynchronously. (The user must, of course, own the playlist.)
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="base64EncodedJpgImage">The image as a base64 encoded string</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> UploadPlaylistImageAsync(string userId, string playlistId, string base64EncodedJpgImage)
    {
      return await UploadDataAsync<ErrorResponse>(_builder.UploadPlaylistImage(userId, playlistId), base64EncodedJpgImage, "PUT").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Change a playlist’s name and public/private state. (The user must, of course, own the playlist.)
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="base64EncodedJpgImage">The image as a base64 encoded string</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse UploadPlaylistImage(string playlistId, string base64EncodedJpgImage)
    {
      return UploadData<ErrorResponse>(_builder.UploadPlaylistImage(playlistId), base64EncodedJpgImage, "PUT") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Change a playlist’s name and public/private state asynchronously. (The user must, of course, own the playlist.)
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="base64EncodedJpgImage">The image as a base64 encoded string</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> UploadPlaylistImageAsync(string playlistId, string base64EncodedJpgImage)
    {
      return await UploadDataAsync<ErrorResponse>(_builder.UploadPlaylistImage(playlistId),
        base64EncodedJpgImage, "PUT").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Replace all the tracks in a playlist, overwriting its existing tracks. This powerful request can be useful for
    ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">A list of Spotify track URIs to set. A maximum of 100 tracks can be set in one request.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling ReplacePlaylistTracks with a userId is deprecated, remove the parameter")]
    public ErrorResponse ReplacePlaylistTracks(string userId, string playlistId, List<string> uris)
    {
      JObject body = new JObject
      { { "uris", new JArray(uris.Take(100)) }
      };
      return UploadData<ErrorResponse>(_builder.ReplacePlaylistTracks(userId, playlistId), body.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Replace all the tracks in a playlist, overwriting its existing tracks. This powerful request can be useful for
    ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">A list of Spotify track URIs to set. A maximum of 100 tracks can be set in one request.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse ReplacePlaylistTracks(string playlistId, List<string> uris)
    {
      JObject body = new JObject
      { { "uris", new JArray(uris.Take(100)) }
      };
      return UploadData<ErrorResponse>(_builder.ReplacePlaylistTracks(playlistId), body.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Replace all the tracks in a playlist asynchronously, overwriting its existing tracks. This powerful request can be useful for
    ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">A list of Spotify track URIs to set. A maximum of 100 tracks can be set in one request.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling ReplacePlaylistTracks with a userId is deprecated, remove the parameter")]
    public async Task<ErrorResponse> ReplacePlaylistTracksAsync(string userId, string playlistId, List<string> uris)
    {
      JObject body = new JObject
      { { "uris", new JArray(uris.Take(100)) }
      };
      return await UploadDataAsync<ErrorResponse>(_builder.ReplacePlaylistTracks(userId, playlistId), body.ToString(Formatting.None), "PUT").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Replace all the tracks in a playlist asynchronously, overwriting its existing tracks. This powerful request can be useful for
    ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">A list of Spotify track URIs to set. A maximum of 100 tracks can be set in one request.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> ReplacePlaylistTracksAsync(string playlistId, List<string> uris)
    {
      JObject body = new JObject
      { { "uris", new JArray(uris.Take(100)) }
      };
      return await UploadDataAsync<ErrorResponse>(_builder.ReplacePlaylistTracks(playlistId), body.ToString(Formatting.None), "PUT").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Remove one or more tracks from a user’s playlist.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">
    ///     array of objects containing Spotify URI strings (and their position in the playlist). A maximum of
    ///     100 objects can be sent at once.
    /// </param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling RemovePlaylistTracks with a userId is deprecated, remove the parameter")]
    public ErrorResponse RemovePlaylistTracks(string userId, string playlistId, List<DeleteTrackUri> uris)
    {
      JObject body = new JObject
      { { "tracks", JArray.FromObject(uris.Take(100)) }
      };
      return UploadData<ErrorResponse>(_builder.RemovePlaylistTracks(userId, playlistId, uris), body.ToString(Formatting.None), "DELETE") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Remove one or more tracks from a user’s playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">
    ///     array of objects containing Spotify URI strings (and their position in the playlist). A maximum of
    ///     100 objects can be sent at once.
    /// </param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse RemovePlaylistTracks(string playlistId, List<DeleteTrackUri> uris)
    {
      JObject body = new JObject
      { { "tracks", JArray.FromObject(uris.Take(100)) }
      };
      return UploadData<ErrorResponse>(_builder.RemovePlaylistTracks(playlistId, uris), body.ToString(Formatting.None), "DELETE") ?? new ErrorResponse();
    }

    /// <summary>
    ///     Remove one or more tracks from a user’s playlist asynchronously.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">
    ///     array of objects containing Spotify URI strings (and their position in the playlist). A maximum of
    ///     100 objects can be sent at once.
    /// </param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling RemovePlaylistTracks with a userId is deprecated, remove the parameter")]
    public async Task<ErrorResponse> RemovePlaylistTracksAsync(string userId, string playlistId, List<DeleteTrackUri> uris)
    {
      JObject body = new JObject
      { { "tracks", JArray.FromObject(uris.Take(100)) }
      };
      return await UploadDataAsync<ErrorResponse>(_builder.RemovePlaylistTracks(userId, playlistId, uris), body.ToString(Formatting.None), "DELETE").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Remove one or more tracks from a user’s playlist asynchronously.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">
    ///     array of objects containing Spotify URI strings (and their position in the playlist). A maximum of
    ///     100 objects can be sent at once.
    /// </param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> RemovePlaylistTracksAsync(string playlistId, List<DeleteTrackUri> uris)
    {
      JObject body = new JObject
      { { "tracks", JArray.FromObject(uris.Take(100)) }
      };
      return await UploadDataAsync<ErrorResponse>(_builder.RemovePlaylistTracks(playlistId, uris), body.ToString(Formatting.None), "DELETE").ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Remove a track from a user’s playlist.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uri">Spotify URI</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling RemovePlaylistTrack with a userId is deprecated, remove the parameter")]
    public ErrorResponse RemovePlaylistTrack(string userId, string playlistId, DeleteTrackUri uri)
    {
      return RemovePlaylistTracks(playlistId, new List<DeleteTrackUri> { uri });
    }

    /// <summary>
    ///     Remove a track from a user’s playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uri">Spotify URI</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse RemovePlaylistTrack(string playlistId, DeleteTrackUri uri)
    {
      return RemovePlaylistTracks(playlistId, new List<DeleteTrackUri> { uri });
    }

    /// <summary>
    ///     Remove a track from a user’s playlist asynchronously.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uri">Spotify URI</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling RemovePlaylistTrack with a userId is deprecated, remove the parameter")]
    public Task<ErrorResponse> RemovePlaylistTrackAsync(string userId, string playlistId, DeleteTrackUri uri)
    {
      return RemovePlaylistTracksAsync(playlistId, new List<DeleteTrackUri> { uri });
    }

    /// <summary>
    ///     Remove a track from a user’s playlist asynchronously.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uri">Spotify URI</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ErrorResponse> RemovePlaylistTrackAsync(string playlistId, DeleteTrackUri uri)
    {
      return RemovePlaylistTracksAsync(playlistId, new List<DeleteTrackUri> { uri });
    }

    /// <summary>
    ///     Add one or more tracks to a user’s playlist.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">A list of Spotify track URIs to add</param>
    /// <param name="position">The position to insert the tracks, a zero-based index</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling AddPlaylistTracks with a userId is deprecated, remove the parameter")]
    public ErrorResponse AddPlaylistTracks(string userId, string playlistId, List<string> uris, int? position = null)
    {
      JObject body = new JObject
      { { "uris", JArray.FromObject(uris.Take(100)) }
      };
      return UploadData<ErrorResponse>(_builder.AddPlaylistTracks(userId, playlistId, uris, position), body.ToString(Formatting.None)) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Add one or more tracks to a user’s playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">A list of Spotify track URIs to add</param>
    /// <param name="position">The position to insert the tracks, a zero-based index</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse AddPlaylistTracks(string playlistId, List<string> uris, int? position = null)
    {
      JObject body = new JObject
      { { "uris", JArray.FromObject(uris.Take(100)) }
      };
      return UploadData<ErrorResponse>(_builder.AddPlaylistTracks(playlistId, uris, position), body.ToString(Formatting.None)) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Add one or more tracks to a user’s playlist asynchronously.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">A list of Spotify track URIs to add</param>
    /// <param name="position">The position to insert the tracks, a zero-based index</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling AddPlaylistTracks with a userId is deprecated, remove the parameter")]
    public async Task<ErrorResponse> AddPlaylistTracksAsync(string userId, string playlistId, List<string> uris, int? position = null)
    {
      JObject body = new JObject
      { { "uris", JArray.FromObject(uris.Take(100)) }
      };
      return await UploadDataAsync<ErrorResponse>(_builder.AddPlaylistTracks(userId, playlistId, uris, position), body.ToString(Formatting.None)).ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Add one or more tracks to a user’s playlist asynchronously.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uris">A list of Spotify track URIs to add</param>
    /// <param name="position">The position to insert the tracks, a zero-based index</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public async Task<ErrorResponse> AddPlaylistTracksAsync(string playlistId, List<string> uris, int? position = null)
    {
      JObject body = new JObject
      { { "uris", JArray.FromObject(uris.Take(100)) }
      };
      return await UploadDataAsync<ErrorResponse>(_builder.AddPlaylistTracks(playlistId, uris, position), body.ToString(Formatting.None)).ConfigureAwait(false) ?? new ErrorResponse();
    }

    /// <summary>
    ///     Add a track to a user’s playlist.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uri">A Spotify Track URI</param>
    /// <param name="position">The position to insert the tracks, a zero-based index</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling AddPlaylistTrack with a userId is deprecated, remove the parameter")]
    public ErrorResponse AddPlaylistTrack(string userId, string playlistId, string uri, int? position = null)
    {
      return AddPlaylistTracks(playlistId, new List<string> { uri }, position);
    }

    /// <summary>
    ///     Add a track to a user’s playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uri">A Spotify Track URI</param>
    /// <param name="position">The position to insert the tracks, a zero-based index</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public ErrorResponse AddPlaylistTrack(string playlistId, string uri, int? position = null)
    {
      return AddPlaylistTracks(playlistId, new List<string> { uri }, position);
    }

    /// <summary>
    ///     Add a track to a user’s playlist asynchronously.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uri">A Spotify Track URI</param>
    /// <param name="position">The position to insert the tracks, a zero-based index</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling AddPlaylistTrack with a userId is deprecated, remove the parameter")]
    public Task<ErrorResponse> AddPlaylistTrackAsync(string userId, string playlistId, string uri, int? position = null)
    {
      return AddPlaylistTracksAsync(userId, playlistId, new List<string> { uri }, position);
    }

    /// <summary>
    ///     Add a track to a user’s playlist asynchronously.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="uri">A Spotify Track URI</param>
    /// <param name="position">The position to insert the tracks, a zero-based index</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<ErrorResponse> AddPlaylistTrackAsync(string playlistId, string uri, int? position = null)
    {
      return AddPlaylistTracksAsync(playlistId, new List<string> { uri }, position);
    }

    /// <summary>
    ///     Reorder a track or a group of tracks in a playlist.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="rangeStart">The position of the first track to be reordered.</param>
    /// <param name="insertBefore">The position where the tracks should be inserted. </param>
    /// <param name="rangeLength">The amount of tracks to be reordered. Defaults to 1 if not set.</param>
    /// <param name="snapshotId">The playlist's snapshot ID against which you want to make the changes.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling ReorderPlaylist with a userId is deprecated, remove the parameter")]
    public Snapshot ReorderPlaylist(string userId, string playlistId, int rangeStart, int insertBefore, int rangeLength = 1, string snapshotId = "")
    {
      JObject body = new JObject
      { { "range_start", rangeStart }, { "range_length", rangeLength }, { "insert_before", insertBefore }
      };
      if (!string.IsNullOrEmpty(snapshotId))
        body.Add("snapshot_id", snapshotId);
      return UploadData<Snapshot>(_builder.ReorderPlaylist(userId, playlistId), body.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Reorder a track or a group of tracks in a playlist.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="rangeStart">The position of the first track to be reordered.</param>
    /// <param name="insertBefore">The position where the tracks should be inserted. </param>
    /// <param name="rangeLength">The amount of tracks to be reordered. Defaults to 1 if not set.</param>
    /// <param name="snapshotId">The playlist's snapshot ID against which you want to make the changes.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Snapshot ReorderPlaylist(string playlistId, int rangeStart, int insertBefore, int rangeLength = 1, string snapshotId = "")
    {
      JObject body = new JObject
      { { "range_start", rangeStart }, { "range_length", rangeLength }, { "insert_before", insertBefore }
      };
      if (!string.IsNullOrEmpty(snapshotId))
        body.Add("snapshot_id", snapshotId);
      return UploadData<Snapshot>(_builder.ReorderPlaylist(playlistId), body.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Reorder a track or a group of tracks in a playlist asynchronously.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="rangeStart">The position of the first track to be reordered.</param>
    /// <param name="insertBefore">The position where the tracks should be inserted. </param>
    /// <param name="rangeLength">The amount of tracks to be reordered. Defaults to 1 if not set.</param>
    /// <param name="snapshotId">The playlist's snapshot ID against which you want to make the changes.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    [Obsolete("Calling ReorderPlaylist with a userId is deprecated, remove the parameter")]
    public Task<Snapshot> ReorderPlaylistAsync(string userId, string playlistId, int rangeStart, int insertBefore, int rangeLength = 1, string snapshotId = "")
    {
      JObject body = new JObject
      { { "range_start", rangeStart }, { "range_length", rangeLength }, { "insert_before", insertBefore }, { "snapshot_id", snapshotId }
      };
      if (!string.IsNullOrEmpty(snapshotId))
        body.Add("snapshot_id", snapshotId);
      return UploadDataAsync<Snapshot>(_builder.ReorderPlaylist(userId, playlistId), body.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Reorder a track or a group of tracks in a playlist asynchronously.
    /// </summary>
    /// <param name="playlistId">The Spotify ID for the playlist.</param>
    /// <param name="rangeStart">The position of the first track to be reordered.</param>
    /// <param name="insertBefore">The position where the tracks should be inserted. </param>
    /// <param name="rangeLength">The amount of tracks to be reordered. Defaults to 1 if not set.</param>
    /// <param name="snapshotId">The playlist's snapshot ID against which you want to make the changes.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<Snapshot> ReorderPlaylistAsync(string playlistId, int rangeStart, int insertBefore, int rangeLength = 1, string snapshotId = "")
    {
      JObject body = new JObject
      { { "range_start", rangeStart }, { "range_length", rangeLength }, { "insert_before", insertBefore }, { "snapshot_id", snapshotId }
      };
      if (!string.IsNullOrEmpty(snapshotId))
        body.Add("snapshot_id", snapshotId);
      return UploadDataAsync<Snapshot>(_builder.ReorderPlaylist(playlistId), body.ToString(Formatting.None), "PUT");
    }

    #endregion Playlists

    #region Profiles

    /// <summary>
    ///     Get detailed profile information about the current user (including the current user’s username).
    /// </summary>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public PrivateProfile GetPrivateProfile()
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPrivateProfile");
      return DownloadData<PrivateProfile>(_builder.GetPrivateProfile());
    }

    /// <summary>
    ///     Get detailed profile information about the current user asynchronously (including the current user’s username).
    /// </summary>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<PrivateProfile> GetPrivateProfileAsync()
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for GetPrivateProfile");
      return DownloadDataAsync<PrivateProfile>(_builder.GetPrivateProfile());
    }

    /// <summary>
    ///     Get public profile information about a Spotify user.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <returns></returns>
    public PublicProfile GetPublicProfile(string userId)
    {
      return DownloadData<PublicProfile>(_builder.GetPublicProfile(userId));
    }

    /// <summary>
    ///     Get public profile information about a Spotify user asynchronously.
    /// </summary>
    /// <param name="userId">The user's Spotify user ID.</param>
    /// <returns></returns>
    public Task<PublicProfile> GetPublicProfileAsync(string userId)
    {
      return DownloadDataAsync<PublicProfile>(_builder.GetPublicProfile(userId));
    }

    #endregion Profiles

    #region Tracks

    /// <summary>
    ///     Get Spotify catalog information for multiple tracks based on their Spotify IDs.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs for the tracks. Maximum: 50 IDs.</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public SeveralTracks GetSeveralTracks(List<string> ids, string market = "")
    {
      return DownloadData<SeveralTracks>(_builder.GetSeveralTracks(ids, market));
    }

    /// <summary>
    ///     Get Spotify catalog information for multiple tracks based on their Spotify IDs asynchronously.
    /// </summary>
    /// <param name="ids">A list of the Spotify IDs for the tracks. Maximum: 50 IDs.</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public Task<SeveralTracks> GetSeveralTracksAsync(List<string> ids, string market = "")
    {
      return DownloadDataAsync<SeveralTracks>(_builder.GetSeveralTracks(ids, market));
    }

    /// <summary>
    ///     Get Spotify catalog information for a single track identified by its unique Spotify ID.
    /// </summary>
    /// <param name="id">The Spotify ID for the track.</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public FullTrack GetTrack(string id, string market = "")
    {
      return DownloadData<FullTrack>(_builder.GetTrack(id, market));
    }

    /// <summary>
    ///     Get Spotify catalog information for a single track identified by its unique Spotify ID asynchronously.
    /// </summary>
    /// <param name="id">The Spotify ID for the track.</param>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public Task<FullTrack> GetTrackAsync(string id, string market = "")
    {
      return DownloadDataAsync<FullTrack>(_builder.GetTrack(id, market));
    }

    /// <summary>
    ///     Get a detailed audio analysis for a single track identified by its unique Spotify ID.
    /// </summary>
    /// <param name="id">The Spotify ID for the track.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public AudioAnalysis GetAudioAnalysis(string id)
    {
      return DownloadData<AudioAnalysis>(_builder.GetAudioAnalysis(id));
    }

    /// <summary>
    ///     Get a detailed audio analysis for a single track identified by its unique Spotify ID asynchronously.
    /// </summary>
    /// <param name="id">The Spotify ID for the track.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<AudioAnalysis> GetAudioAnalysisAsync(string id)
    {
      return DownloadDataAsync<AudioAnalysis>(_builder.GetAudioAnalysis(id));
    }

    /// <summary>
    ///     Get audio feature information for a single track identified by its unique Spotify ID.
    /// </summary>
    /// <param name="id">The Spotify ID for the track.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public AudioFeatures GetAudioFeatures(string id)
    {
      return DownloadData<AudioFeatures>(_builder.GetAudioFeatures(id));
    }

    /// <summary>
    ///     Get audio feature information for a single track identified by its unique Spotify ID asynchronously.
    /// </summary>
    /// <param name="id">The Spotify ID for the track.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<AudioFeatures> GetAudioFeaturesAsync(string id)
    {
      return DownloadDataAsync<AudioFeatures>(_builder.GetAudioFeatures(id));
    }

    /// <summary>
    ///     Get audio features for multiple tracks based on their Spotify IDs.
    /// </summary>
    /// <param name="ids">A list of Spotify Track-IDs. Maximum: 100 IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public SeveralAudioFeatures GetSeveralAudioFeatures(List<string> ids)
    {
      return DownloadData<SeveralAudioFeatures>(_builder.GetSeveralAudioFeatures(ids));
    }

    /// <summary>
    ///     Get audio features for multiple tracks based on their Spotify IDs asynchronously.
    /// </summary>
    /// <param name="ids">A list of Spotify Track-IDs. Maximum: 100 IDs.</param>
    /// <returns></returns>
    /// <remarks>AUTH NEEDED</remarks>
    public Task<SeveralAudioFeatures> GetSeveralAudioFeaturesAsync(List<string> ids)
    {
      return DownloadDataAsync<SeveralAudioFeatures>(_builder.GetSeveralAudioFeatures(ids));
    }

    #endregion Tracks

    #region Player

    /// <summary>
    ///     Get information about a user’s available devices.
    /// </summary>
    /// <returns></returns>
    public AvailabeDevices GetDevices()
    {
      return DownloadData<AvailabeDevices>(_builder.GetDevices());
    }

    /// <summary>
    ///     Get information about a user’s available devices.
    /// </summary>
    /// <returns></returns>
    public Task<AvailabeDevices> GetDevicesAsync()
    {
      return DownloadDataAsync<AvailabeDevices>(_builder.GetDevices());
    }

    /// <summary>
    ///     Get information about the user’s current playback state, including track, track progress, and active device.
    /// </summary>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public PlaybackContext GetPlayback(string market = "")
    {
      return DownloadData<PlaybackContext>(_builder.GetPlayback(market));
    }

    /// <summary>
    ///     Get information about the user’s current playback state, including track, track progress, and active device.
    /// </summary>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public Task<PlaybackContext> GetPlaybackAsync(string market = "")
    {
      return DownloadDataAsync<PlaybackContext>(_builder.GetPlayback(market));
    }

    /// <summary>
    ///     Get the object currently being played on the user’s Spotify account.
    /// </summary>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public PlaybackContext GetPlayingTrack(string market = "")
    {
      return DownloadData<PlaybackContext>(_builder.GetPlayingTrack(market));
    }

    /// <summary>
    ///     Get the object currently being played on the user’s Spotify account.
    /// </summary>
    /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
    /// <returns></returns>
    public Task<PlaybackContext> GetPlayingTrackAsync(string market = "")
    {
      return DownloadDataAsync<PlaybackContext>(_builder.GetPlayingTrack(market));
    }

    /// <summary>
    ///     Transfer playback to a new device and determine if it should start playing.
    /// </summary>
    /// <param name="deviceId">ID of the device on which playback should be started/transferred to</param>
    /// <param name="play">
    /// true: ensure playback happens on new device.
    /// false or not provided: keep the current playback state.
    /// </param>
    /// <returns></returns>
    public ErrorResponse TransferPlayback(string deviceId, bool play = false) => TransferPlayback(
      new List<string> { deviceId }, play);

    /// <summary>
    ///     Transfer playback to a new device and determine if it should start playing.
    /// </summary>
    /// <param name="deviceId">ID of the device on which playback should be started/transferred to</param>
    /// <param name="play">
    /// true: ensure playback happens on new device.
    /// false or not provided: keep the current playback state.
    /// </param>
    /// <returns></returns>
    public Task<ErrorResponse> TransferPlaybackAsync(string deviceId, bool play = false) => TransferPlaybackAsync(
      new List<string> { deviceId }, play);

    /// <summary>
    ///     Transfer playback to a new device and determine if it should start playing.
    ///     NOTE: Although an array is accepted, only a single device_id is currently supported. Supplying more than one will return 400 Bad Request
    /// </summary>
    /// <param name="deviceIds">A array containing the ID of the device on which playback should be started/transferred.</param>
    /// <param name="play">
    /// true: ensure playback happens on new device.
    /// false or not provided: keep the current playback state.
    /// </param>
    /// <returns></returns>
    public ErrorResponse TransferPlayback(List<string> deviceIds, bool play = false)
    {
      JObject ob = new JObject
      { { "play", play }, { "device_ids", new JArray(deviceIds) }
      };
      return UploadData<ErrorResponse>(_builder.TransferPlayback(), ob.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Transfer playback to a new device and determine if it should start playing.
    ///     NOTE: Although an array is accepted, only a single device_id is currently supported. Supplying more than one will return 400 Bad Request
    /// </summary>
    /// <param name="deviceIds">A array containing the ID of the device on which playback should be started/transferred.</param>
    /// <param name="play">
    /// true: ensure playback happens on new device.
    /// false or not provided: keep the current playback state.
    /// </param>
    /// <returns></returns>
    public Task<ErrorResponse> TransferPlaybackAsync(List<string> deviceIds, bool play = false)
    {
      JObject ob = new JObject
      { { "play", play }, { "device_ids", new JArray(deviceIds) }
      };
      return UploadDataAsync<ErrorResponse>(_builder.TransferPlayback(), ob.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Start a new context or resume current playback on the user’s active device.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <param name="contextUri">Spotify URI of the context to play.</param>
    /// <param name="uris">A JSON array of the Spotify track URIs to play.</param>
    /// <param name="offset">Indicates from where in the context playback should start.
    /// Only available when context_uri corresponds to an album or playlist object, or when the uris parameter is used.</param>
    /// <param name="positionMs">The starting time to seek the track to</param>
    /// <returns></returns>
    public ErrorResponse ResumePlayback(string deviceId = "", string contextUri = "", List<string> uris = null,
      int? offset = null, int positionMs = 0)
    {
      JObject ob = new JObject();
      if (!string.IsNullOrEmpty(contextUri))
        ob.Add("context_uri", contextUri);
      if (uris != null)
        ob.Add("uris", new JArray(uris));
      if (offset != null)
        ob.Add("offset", new JObject { { "position", offset } });
      if (positionMs > 0)
        ob.Add("position_ms", positionMs);
      return UploadData<ErrorResponse>(_builder.ResumePlayback(deviceId), ob.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Start a new context or resume current playback on the user’s active device.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <param name="contextUri">Spotify URI of the context to play.</param>
    /// <param name="uris">A JSON array of the Spotify track URIs to play.</param>
    /// <param name="offset">Indicates from where in the context playback should start.
    /// Only available when context_uri corresponds to an album or playlist object, or when the uris parameter is used.</param>
    /// <param name="positionMs">The starting time to seek the track to</param>
    /// <returns></returns>
    public Task<ErrorResponse> ResumePlaybackAsync(string deviceId = "", string contextUri = "", List<string> uris = null,
      int? offset = null, int positionMs = 0)
    {
      JObject ob = new JObject();
      if (!string.IsNullOrEmpty(contextUri))
        ob.Add("context_uri", contextUri);
      if (uris != null)
        ob.Add("uris", new JArray(uris));
      if (offset != null)
        ob.Add("offset", new JObject { { "position", offset } });
      if (positionMs > 0)
        ob.Add("position_ms", positionMs);
      return UploadDataAsync<ErrorResponse>(_builder.ResumePlayback(deviceId), ob.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Start a new context or resume current playback on the user’s active device.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <param name="contextUri">Spotify URI of the context to play.</param>
    /// <param name="uris">A JSON array of the Spotify track URIs to play.</param>
    /// <param name="offset">Indicates from where in the context playback should start.
    /// Only available when context_uri corresponds to an album or playlist object, or when the uris parameter is used.</param>
    /// <param name="positionMs">The starting time to seek the track to</param>
    /// <returns></returns>
    public ErrorResponse ResumePlayback(string deviceId = "", string contextUri = "", List<string> uris = null,
      string offset = "", int positionMs = 0)
    {
      JObject ob = new JObject();
      if (!string.IsNullOrEmpty(contextUri))
        ob.Add("context_uri", contextUri);
      if (uris != null)
        ob.Add("uris", new JArray(uris));
      if (!string.IsNullOrEmpty(offset))
        ob.Add("offset", new JObject { { "uri", offset } });
      if (positionMs > 0)
        ob.Add("position_ms", positionMs);
      return UploadData<ErrorResponse>(_builder.ResumePlayback(deviceId), ob.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Start a new context or resume current playback on the user’s active device.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <param name="contextUri">Spotify URI of the context to play.</param>
    /// <param name="uris">A JSON array of the Spotify track URIs to play.</param>
    /// <param name="offset">Indicates from where in the context playback should start.
    /// Only available when context_uri corresponds to an album or playlist object, or when the uris parameter is used.</param>
    /// <param name="positionMs">The starting time to seek the track to</param>
    /// <returns></returns>
    public Task<ErrorResponse> ResumePlaybackAsync(string deviceId = "", string contextUri = "", List<string> uris = null,
      string offset = "", int positionMs = 0)
    {
      JObject ob = new JObject();
      if (!string.IsNullOrEmpty(contextUri))
        ob.Add("context_uri", contextUri);
      if (uris != null)
        ob.Add("uris", new JArray(uris));
      if (!string.IsNullOrEmpty(offset))
        ob.Add("offset", new JObject { { "uri", offset } });
      if (positionMs > 0)
        ob.Add("position_ms", positionMs);
      return UploadDataAsync<ErrorResponse>(_builder.ResumePlayback(deviceId), ob.ToString(Formatting.None), "PUT");
    }

    /// <summary>
    ///     Pause playback on the user’s account.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public ErrorResponse PausePlayback(string deviceId = "")
    {
      return UploadData<ErrorResponse>(_builder.PausePlayback(deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Pause playback on the user’s account.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public Task<ErrorResponse> PausePlaybackAsync(string deviceId = "")
    {
      return UploadDataAsync<ErrorResponse>(_builder.PausePlayback(deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Skips to next track in the user’s queue.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public ErrorResponse SkipPlaybackToNext(string deviceId = "")
    {
      return UploadData<ErrorResponse>(_builder.SkipPlaybackToNext(deviceId), string.Empty);
    }

    /// <summary>
    ///     Skips to next track in the user’s queue.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public Task<ErrorResponse> SkipPlaybackToNextAsync(string deviceId = "")
    {
      return UploadDataAsync<ErrorResponse>(_builder.SkipPlaybackToNext(deviceId), string.Empty);
    }

    /// <summary>
    ///     Skips to previous track in the user’s queue.
    ///     Note that this will ALWAYS skip to the previous track, regardless of the current track’s progress.
    ///     Returning to the start of the current track should be performed using the https://api.spotify.com/v1/me/player/seek endpoint.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public ErrorResponse SkipPlaybackToPrevious(string deviceId = "")
    {
      return UploadData<ErrorResponse>(_builder.SkipPlaybackToPrevious(deviceId), string.Empty);
    }

    /// <summary>
    ///     Skips to previous track in the user’s queue.
    ///     Note that this will ALWAYS skip to the previous track, regardless of the current track’s progress.
    ///     Returning to the start of the current track should be performed using the https://api.spotify.com/v1/me/player/seek endpoint.
    /// </summary>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public Task<ErrorResponse> SkipPlaybackToPreviousAsync(string deviceId = "")
    {
      return UploadDataAsync<ErrorResponse>(_builder.SkipPlaybackToPrevious(deviceId), string.Empty);
    }

    /// <summary>
    ///     Seeks to the given position in the user’s currently playing track.
    /// </summary>
    /// <param name="positionMs">The position in milliseconds to seek to. Must be a positive number.
    /// Passing in a position that is greater than the length of the track will cause the player to start playing the next song.</param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public ErrorResponse SeekPlayback(int positionMs, string deviceId = "")
    {
      return UploadData<ErrorResponse>(_builder.SeekPlayback(positionMs, deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Seeks to the given position in the user’s currently playing track.
    /// </summary>
    /// <param name="positionMs">The position in milliseconds to seek to. Must be a positive number.
    /// Passing in a position that is greater than the length of the track will cause the player to start playing the next song.</param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public Task<ErrorResponse> SeekPlaybackAsync(int positionMs, string deviceId = "")
    {
      return UploadDataAsync<ErrorResponse>(_builder.SeekPlayback(positionMs, deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Set the repeat mode for the user’s playback. Options are repeat-track, repeat-context, and off.
    /// </summary>
    /// <param name="state">track, context or off. </param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public ErrorResponse SetRepeatMode(RepeatState state, string deviceId = "")
    {
      return UploadData<ErrorResponse>(_builder.SetRepeatMode(state, deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Set the repeat mode for the user’s playback. Options are repeat-track, repeat-context, and off.
    /// </summary>
    /// <param name="state">track, context or off. </param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public Task<ErrorResponse> SetRepeatModeAsync(RepeatState state, string deviceId = "")
    {
      return UploadDataAsync<ErrorResponse>(_builder.SetRepeatMode(state, deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Set the volume for the user’s current playback device.
    /// </summary>
    /// <param name="volumePercent">Integer. The volume to set. Must be a value from 0 to 100 inclusive.</param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public ErrorResponse SetVolume(int volumePercent, string deviceId = "")
    {
      return UploadData<ErrorResponse>(_builder.SetVolume(volumePercent, deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Set the volume for the user’s current playback device.
    /// </summary>
    /// <param name="volumePercent">Integer. The volume to set. Must be a value from 0 to 100 inclusive.</param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public Task<ErrorResponse> SetVolumeAsync(int volumePercent, string deviceId = "")
    {
      return UploadDataAsync<ErrorResponse>(_builder.SetVolume(volumePercent, deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Toggle shuffle on or off for user’s playback.
    /// </summary>
    /// <param name="shuffle">True or False</param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public ErrorResponse SetShuffle(bool shuffle, string deviceId = "")
    {
      return UploadData<ErrorResponse>(_builder.SetShuffle(shuffle, deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Toggle shuffle on or off for user’s playback.
    /// </summary>
    /// <param name="shuffle">True or False</param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
    /// <returns></returns>
    public Task<ErrorResponse> SetShuffleAsync(bool shuffle, string deviceId = "")
    {
      return UploadDataAsync<ErrorResponse>(_builder.SetShuffle(shuffle, deviceId), string.Empty, "PUT");
    }

    /// <summary>
    ///     Add an Item to the User's Playback Queue. BETA
    /// </summary>
    /// <param name="uri">The uri of the item to add to the queue. Must be a track or an episode uri.</param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user’s currently active device is the target.</param>
    /// <returns></returns>
    public ErrorResponse AddToQueue(string uri, string deviceId = "")
    {
      return UploadData<ErrorResponse>(_builder.AddToQueue(uri, deviceId), string.Empty);
    }

    /// <summary>
    ///     Add an Item to the User's Playback Queue. BETA
    /// </summary>
    /// <param name="uri">The uri of the item to add to the queue. Must be a track or an episode uri.</param>
    /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user’s currently active device is the target.</param>
    /// <returns></returns>
    public Task<ErrorResponse> AddToQueueAsync(string uri, string deviceId = "")
    {
      return UploadDataAsync<ErrorResponse>(_builder.AddToQueue(uri, deviceId), string.Empty);
    }

    #endregion

    #region Util

    public TOut GetNextPage<TOut, TIn>(Paging<TIn> paging) where TOut : BasicModel
    {
      if (!paging.HasNextPage())
        throw new InvalidOperationException("This Paging-Object has no Next-Page");
      return DownloadData<TOut>(paging.Next);
    }

    public TOut GetNextPage<TOut, TIn>(CursorPaging<TIn> paging) where TOut : BasicModel
    {
      if (!paging.HasNext())
        throw new InvalidOperationException("This CursorPaging-Object has no Next-Page");
      return DownloadData<TOut>(paging.Next);
    }

    public Paging<T> GetNextPage<T>(Paging<T> paging)
    {
      return GetNextPage<Paging<T>, T>(paging);
    }

    public CursorPaging<T> GetNextPage<T>(CursorPaging<T> paging)
    {
      return GetNextPage<CursorPaging<T>, T>(paging);
    }

    public Task<TOut> GetNextPageAsync<TOut, TIn>(Paging<TIn> paging) where TOut : BasicModel
    {
      if (!paging.HasNextPage())
        throw new InvalidOperationException("This Paging-Object has no Next-Page");
      return DownloadDataAsync<TOut>(paging.Next);
    }

    public Task<TOut> GetNextPageAsync<TOut, TIn>(CursorPaging<TIn> paging) where TOut : BasicModel
    {
      if (!paging.HasNext())
        throw new InvalidOperationException("This Paging-Object has no Next-Page");
      return DownloadDataAsync<TOut>(paging.Next);
    }

    public Task<Paging<T>> GetNextPageAsync<T>(Paging<T> paging)
    {
      return GetNextPageAsync<Paging<T>, T>(paging);
    }

    public Task<CursorPaging<T>> GetNextPageAsync<T>(CursorPaging<T> paging)
    {
      return GetNextPageAsync<CursorPaging<T>, T>(paging);
    }

    public TOut GetPreviousPage<TOut, TIn>(Paging<TIn> paging) where TOut : BasicModel
    {
      if (!paging.HasPreviousPage())
        throw new InvalidOperationException("This Paging-Object has no Previous-Page");
      return DownloadData<TOut>(paging.Previous);
    }

    public Paging<T> GetPreviousPage<T>(Paging<T> paging)
    {
      return GetPreviousPage<Paging<T>, T>(paging);
    }

    public Task<TOut> GetPreviousPageAsync<TOut, TIn>(Paging<TIn> paging) where TOut : BasicModel
    {
      if (!paging.HasPreviousPage())
        throw new InvalidOperationException("This Paging-Object has no Previous-Page");
      return DownloadDataAsync<TOut>(paging.Previous);
    }

    public Task<Paging<T>> GetPreviousPageAsync<T>(Paging<T> paging)
    {
      return GetPreviousPageAsync<Paging<T>, T>(paging);
    }

    private ListResponse<T> DownloadList<T>(string url)
    {
      int triesLeft = RetryTimes + 1;
      Error lastError;

      ListResponse<T> data = null;
      do
      {
        if (data != null) { Thread.Sleep(RetryAfter); }
        Tuple<ResponseInfo, JToken> res = DownloadDataAlt<JToken>(url);
        data = ExtractDataToListResponse<T>(res);

        lastError = data.Error;

        triesLeft -= 1;

      } while (UseAutoRetry && triesLeft > 0 && lastError != null && RetryErrorCodes.Contains(lastError.Status));

      return data;
    }

    private async Task<ListResponse<T>> DownloadListAsync<T>(string url)
    {
      int triesLeft = RetryTimes + 1;
      Error lastError;

      ListResponse<T> data = null;
      do
      {
        if (data != null) { await Task.Delay(RetryAfter).ConfigureAwait(false); }
        Tuple<ResponseInfo, JToken> res = await DownloadDataAltAsync<JToken>(url).ConfigureAwait(false);
        data = ExtractDataToListResponse<T>(res);

        lastError = data.Error;

        triesLeft -= 1;

      } while (UseAutoRetry && triesLeft > 0 && lastError != null && RetryErrorCodes.Contains(lastError.Status));

      return data;
    }

    private static ListResponse<T> ExtractDataToListResponse<T>(Tuple<ResponseInfo, JToken> res)
    {
      ListResponse<T> ret;
      if (res.Item2 is JArray)
      {
        ret = new ListResponse<T>
        {
          List = res.Item2.ToObject<List<T>>(),
          Error = null
        };
      }
      else
      {
        ret = new ListResponse<T>
        {
          List = null,
          Error = res.Item2["error"].ToObject<Error>()
        };
      }
      ret.AddResponseInfo(res.Item1);
      return ret;
    }

    public T UploadData<T>(string url, string uploadData, string method = "POST") where T : BasicModel
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for all Upload-Actions");
      int triesLeft = RetryTimes + 1;
      Error lastError;

      Tuple<ResponseInfo, T> response = null;
      do
      {
        Dictionary<string, string> headers = new Dictionary<string, string>
        { { "Authorization", TokenType + " " + AccessToken },
          { "Content-Type", "application/json" }
        };

        if (response != null) { Thread.Sleep(RetryAfter); }
        response = WebClient.UploadJson<T>(url, uploadData, method, headers);

        response.Item2.AddResponseInfo(response.Item1);
        lastError = response.Item2.Error;
        triesLeft -= 1;

      } while (UseAutoRetry && triesLeft > 0 && lastError != null && RetryErrorCodes.Contains(lastError.Status));

      return response.Item2;
    }

    public async Task<T> UploadDataAsync<T>(string url, string uploadData, string method = "POST") where T : BasicModel
    {
      if (!UseAuth)
        throw new InvalidOperationException("Auth is required for all Upload-Actions");

      int triesLeft = RetryTimes + 1;
      Error lastError;

      Tuple<ResponseInfo, T> response = null;
      do
      {
        Dictionary<string, string> headers = new Dictionary<string, string>
        { { "Authorization", TokenType + " " + AccessToken },
          { "Content-Type", "application/json" }
        };

        if (response != null) { await Task.Delay(RetryAfter).ConfigureAwait(false); }
        response = await WebClient.UploadJsonAsync<T>(url, uploadData, method, headers).ConfigureAwait(false);

        response.Item2.AddResponseInfo(response.Item1);
        lastError = response.Item2.Error;

        triesLeft -= 1;

      } while (UseAutoRetry && triesLeft > 0 && lastError != null && RetryErrorCodes.Contains(lastError.Status));

      return response.Item2;
    }

    public T DownloadData<T>(string url) where T : BasicModel
    {
      int triesLeft = RetryTimes + 1;
      Error lastError;

      Tuple<ResponseInfo, T> response = null;
      do
      {
        if (response != null) { Thread.Sleep(RetryAfter); }
        response = DownloadDataAlt<T>(url);

        response.Item2.AddResponseInfo(response.Item1);
        lastError = response.Item2.Error;

        triesLeft -= 1;

      } while (UseAutoRetry && triesLeft > 0 && lastError != null && RetryErrorCodes.Contains(lastError.Status));

      return response.Item2;
    }

    /// <summary>
    ///     Retrieves whether request had a "TooManyRequests" error, and get the amount Spotify recommends waiting before another request.
    /// </summary>
    /// <param name="info">Info object to analyze.</param>
    /// <returns>Seconds to wait before making another request.  -1 if no error.</returns>
    /// <remarks>AUTH NEEDED</remarks>
    private int GetTooManyRequests(ResponseInfo info)
    {
      // 429 is "TooManyRequests" value specified in Spotify API
      if (429 != (int) info.StatusCode)
      {
        return -1;
      }
      if (!int.TryParse(info.Headers.Get("Retry-After"), out int secondsToWait))
      {
        return -1;
      }
      return secondsToWait;
    }

    public async Task<T> DownloadDataAsync<T>(string url) where T : BasicModel
    {
      int triesLeft = RetryTimes + 1;
      Error lastError;

      Tuple<ResponseInfo, T> response = null;
      do
      {
        if (response != null)
        {
          int msToWait = RetryAfter;
          int secondsToWait = GetTooManyRequests(response.Item1);
          if (secondsToWait > 0)
          {
            msToWait = secondsToWait * 1000;
          }
          await Task.Delay(msToWait).ConfigureAwait(false);
        }
        response = await DownloadDataAltAsync<T>(url).ConfigureAwait(false);

        response.Item2.AddResponseInfo(response.Item1);
        lastError = response.Item2.Error;

        if (TooManyRequestsConsumesARetry || GetTooManyRequests(response.Item1) == -1)
        {
          triesLeft -= 1;
        }

      } while (UseAutoRetry &&
        triesLeft > 0 &&
        (GetTooManyRequests(response.Item1) != -1 ||
          lastError != null && RetryErrorCodes.Contains(lastError.Status)));

      return response.Item2;
    }

    private Tuple<ResponseInfo, T> DownloadDataAlt<T>(string url)
    {
      Dictionary<string, string> headers = new Dictionary<string, string>();
      if (UseAuth)
        headers.Add("Authorization", TokenType + " " + AccessToken);
      return WebClient.DownloadJson<T>(url, headers);
    }

    private Task<Tuple<ResponseInfo, T>> DownloadDataAltAsync<T>(string url)
    {
      Dictionary<string, string> headers = new Dictionary<string, string>();
      if (UseAuth)
        headers.Add("Authorization", TokenType + " " + AccessToken);
      return WebClient.DownloadJsonAsync<T>(url, headers);
    }

    #endregion Util
  }
}