44 lines
1.2 KiB
C#
44 lines
1.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text.Json;
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using System.Text.Json.Serialization;
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namespace Questionable.Model.V1.Converter;
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public sealed class StringListOrValueConverter : JsonConverter<List<string>>
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{
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public override List<string>? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
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{
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if (reader.TokenType == JsonTokenType.String)
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return [reader.GetString()!];
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if (reader.TokenType != JsonTokenType.StartArray)
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throw new JsonException();
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reader.Read();
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List<string> value = [];
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while (reader.TokenType != JsonTokenType.EndArray)
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{
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value.Add(reader.GetString()!);
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reader.Read();
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}
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return value;
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}
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public override void Write(Utf8JsonWriter writer, List<string>? value, JsonSerializerOptions options)
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{
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if (value == null)
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writer.WriteNullValue();
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else if (value.Count == 1)
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writer.WriteStringValue(value[0]);
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else
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{
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writer.WriteStartArray();
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foreach (var v in value)
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writer.WriteStringValue(v);
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writer.WriteEndArray();
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}
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}
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}
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