using Newtonsoft.Json;

namespace Idoklad.Infrastructure;

/// <summary>
/// Wraps an iDoklad SDK converter that only supports reading. Reading is delegated to the SDK
/// converter, while <see cref="CanWrite"/> is false, so Newtonsoft writes the value with the
/// standard member-by-member serialization instead of calling the SDK's <c>WriteJson</c>.
/// </summary>
public sealed class SdkWriteBypassJsonConverter : JsonConverter
{
    private readonly JsonConverter _sdkConverter;

    public SdkWriteBypassJsonConverter(JsonConverter sdkConverter)
    {
        _sdkConverter = sdkConverter;
    }

    public override bool CanRead => _sdkConverter.CanRead;

    public override bool CanWrite => false;

    public override bool CanConvert(Type objectType) => _sdkConverter.CanConvert(objectType);

    public override object? ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
        => _sdkConverter.ReadJson(reader, objectType, existingValue, serializer);

    public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
        => throw new InvalidOperationException("CanWrite is false; Newtonsoft must not call this converter for writing.");
}