64 lines
2.5 KiB
C#
64 lines
2.5 KiB
C#
using System.Text.Json;
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using System.Text.Json.Serialization;
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using YandexMusic.API.Models.Pins.Items;
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namespace YandexMusic.API.Models.Pins;
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/// <summary>Конвертер для закреплённых объектов (пинов). Десериализует в конкретные типы на основе поля type.</summary>
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public class YPinConverter : JsonConverter<List<YPin>>
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{
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public override List<YPin> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
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{
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if (reader.TokenType != JsonTokenType.StartArray)
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throw new JsonException("Ожидается массив пинов");
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var pins = new List<YPin>();
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while (reader.Read())
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{
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if (reader.TokenType == JsonTokenType.EndArray)
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break;
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if (reader.TokenType != JsonTokenType.StartObject)
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throw new JsonException("Ожидается объект пина");
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using var doc = JsonDocument.ParseValue(ref reader);
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var root = doc.RootElement;
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var typeProp = root.GetProperty("type");
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var typeStr = typeProp.GetString();
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if (!Enum.TryParse<YPinType>(typeStr, true, out var pinType))
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throw new JsonException($"Неизвестный тип пина: {typeStr}");
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YPin? pin = null;
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var rawText = root.GetRawText();
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switch (pinType)
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{
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case YPinType.Album:
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pin = JsonSerializer.Deserialize<YPin<YPinAlbumData>>(rawText, options);
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break;
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case YPinType.Artist:
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pin = JsonSerializer.Deserialize<YPin<YPinArtistData>>(rawText, options);
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break;
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case YPinType.Playlist:
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pin = JsonSerializer.Deserialize<YPin<YPinPlaylistData>>(rawText, options);
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break;
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case YPinType.Wave:
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pin = JsonSerializer.Deserialize<YPin<YPinWaveData>>(rawText, options);
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break;
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default:
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pin = JsonSerializer.Deserialize<YPin>(rawText, options);
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break;
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}
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if (pin != null)
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pins.Add(pin);
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}
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return pins;
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}
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public override void Write(Utf8JsonWriter writer, List<YPin> value, JsonSerializerOptions options)
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{
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JsonSerializer.Serialize(writer, value, options);
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}
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} |