87 lines
4.0 KiB
C#
87 lines
4.0 KiB
C#
using System.Text.Json;
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using System.Text.Json.Serialization;
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using YandexMusic.API.Models.Landing.Entity.Entities;
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namespace YandexMusic.API.Models.Landing.Entity;
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/// <summary>Конвертер для сущностей лендинга (десериализация в конкретные типы на основе поля type).</summary>
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public class YLandingEntityConverter : JsonConverter<List<YLandingEntity>>
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{
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public override List<YLandingEntity> 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 сущностей");
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var entities = new List<YLandingEntity>();
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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 сущности");
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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<YLandingEntityType>(typeStr, true, out var entityType))
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throw new JsonException($"Неизвестный тип сущности: {typeStr}");
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YLandingEntity? entity = null;
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var rawText = root.GetRawText();
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switch (entityType)
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{
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case YLandingEntityType.Album:
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entity = JsonSerializer.Deserialize<YLandingEntityAlbum>(rawText, options);
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break;
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case YLandingEntityType.ChartItem:
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entity = JsonSerializer.Deserialize<YLandingEntityChart>(rawText, options);
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break;
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case YLandingEntityType.PersonalPlaylist:
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entity = JsonSerializer.Deserialize<YLandingEntityPersonalPlaylist>(rawText, options);
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break;
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case YLandingEntityType.PlayContext:
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entity = JsonSerializer.Deserialize<YLandingEntityPlayContext>(rawText, options);
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break;
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case YLandingEntityType.Playlist:
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entity = JsonSerializer.Deserialize<YLandingEntityPlaylist>(rawText, options);
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break;
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case YLandingEntityType.Podcast:
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entity = JsonSerializer.Deserialize<YLandingEntityPodcast>(rawText, options);
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break;
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case YLandingEntityType.Promotion:
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entity = JsonSerializer.Deserialize<YLandingEntityPromotion>(rawText, options);
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break;
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case YLandingEntityType.Category:
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entity = JsonSerializer.Deserialize<YLandingEntityCategory>(rawText, options);
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break;
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case YLandingEntityType.Station:
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entity = JsonSerializer.Deserialize<YLandingEntityStation>(rawText, options);
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break;
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case YLandingEntityType.MenuItemAlbum:
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case YLandingEntityType.MenuItemPlaylist:
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entity = JsonSerializer.Deserialize<YLandingEntityAlbumMenuItem>(rawText, options);
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break;
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case YLandingEntityType.ClientWidget:
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entity = JsonSerializer.Deserialize<YLandingEntityClientWidget>(rawText, options);
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break;
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default:
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entity = JsonSerializer.Deserialize<YLandingEntity>(rawText, options);
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break;
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}
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if (entity != null)
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entities.Add(entity);
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}
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return entities;
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}
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public override void Write(Utf8JsonWriter writer, List<YLandingEntity> value, JsonSerializerOptions options)
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{
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JsonSerializer.Serialize(writer, value, options);
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}
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}
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