Spotify.NET/SpotifyAPI.Web/Models/Converters/PlayableItemConverter.cs

51 lines
1.5 KiB
C#

using System;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
namespace SpotifyAPI.Web
{
public class PlayableItemConverter : JsonConverter
{
public override bool CanWrite { get => false; }
public override bool CanConvert(Type objectType) => true;
public override object? ReadJson(JsonReader reader, Type objectType,
object? existingValue, JsonSerializer serializer)
{
Ensure.ArgumentNotNull(serializer, nameof(serializer));
if (JToken.ReadFrom(reader) is not JObject obj)
{
return null;
}
var type = obj.GetValue("type", StringComparison.OrdinalIgnoreCase)?.Value<string>();
if (string.Equals(type, "track", StringComparison.OrdinalIgnoreCase))
{
var track = new FullTrack();
serializer.Populate(obj.CreateReader(), track);
return track;
}
else if (string.Equals(type, "episode", StringComparison.OrdinalIgnoreCase))
{
var episode = new FullEpisode();
serializer.Populate(obj.CreateReader(), episode);
return episode;
}
else
{
throw new APIException($@"Received unkown playlist element type: {type}.
If you're requesting a subset of available fields via the fields query paramter,
make sure to include at least the type field. Often it's `items(track(type))` or `item(type)`");
}
}
public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
{
throw new NotSupportedException();
}
}
}