RackPeek/RackPeek.Domain/Persistence/Yaml/NotesStringYamlConverter.cs

using YamlDotNet.Core;
using YamlDotNet.Core.Events;
using YamlDotNet.Serialization;

namespace RackPeek.Domain.Persistence.Yaml;

public sealed class NotesStringYamlConverter : IYamlTypeConverter {
    public bool Accepts(Type type) => type == typeof(string);

    public object? ReadYaml(IParser parser, Type type, ObjectDeserializer rootDeserializer) {
        Scalar scalar = parser.Consume<Scalar>();
        return scalar.Value;
    }

    public void WriteYaml(IEmitter emitter, object? value, Type type, ObjectSerializer serializer) {
        if (value is null) {
            emitter.Emit(new Scalar(
                AnchorName.Empty,
                TagName.Empty,
                "",
                ScalarStyle.Plain,
                true,
                true));
            return;
        }

        var s = (string)value;

        if (s.Contains('\n'))
            // Literal block style (|)
            emitter.Emit(new Scalar(
                AnchorName.Empty,
                TagName.Empty,
                s,
                ScalarStyle.Literal,
                true,
                false));
        else
            emitter.Emit(new Scalar(s));
    }
}