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using System;
using System.Collections.Generic;
using System.Text.Json;
using System.Text.Json.Serialization;
namespace Tango.Portal.Chat.Web.Models
{
public sealed class FlexibleStringListConverter : JsonConverter<List<string>>
{
public override List<string> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
if (reader.TokenType == JsonTokenType.Null)
return new List<string>();
if (reader.TokenType == JsonTokenType.String)
return new List<string> { reader.GetString() ?? string.Empty };
if (reader.TokenType == JsonTokenType.StartArray)
{
var list = new List<string>();
while (reader.Read())
{
if (reader.TokenType == JsonTokenType.EndArray) break;
if (reader.TokenType == JsonTokenType.String)
list.Add(reader.GetString() ?? string.Empty);
else
{
using var doc = JsonDocument.ParseValue(ref reader);
list.Add(doc.RootElement.GetRawText());
}
}
return list;
}
using var any = JsonDocument.ParseValue(ref reader);
return new List<string> { any.RootElement.GetRawText() };
}
public override void Write(Utf8JsonWriter writer, List<string> value, JsonSerializerOptions options)
{
writer.WriteStartArray();
foreach (var s in value) writer.WriteStringValue(s);
writer.WriteEndArray();
}
}
}
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