// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System;
using System.Globalization;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace NuGet.Protocol.Plugins
{
    internal sealed class RawJsonStringConverter : JsonConverter<string>
    {
        public override string? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            if (reader.TokenType == JsonTokenType.Null)
            {
                return null;
            }

            if (reader.TokenType != JsonTokenType.StartObject)
            {
                throw new JsonException(string.Format(CultureInfo.CurrentCulture, Strings.Error_UnexpectedPayloadTokenType, reader.TokenType));
            }

            using var doc = JsonDocument.ParseValue(ref reader);
            return doc.RootElement.GetRawText();
        }

        public override void Write(Utf8JsonWriter writer, string value, JsonSerializerOptions options)
        {
            if (value is null)
            {
                writer.WriteNullValue();
            }
            else
            {
                writer.WriteRawValue(value);
            }
        }
    }
}