// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Text.Json.Schema;
using System.Text.Json.Nodes;
 
namespace System.Text.Json.Serialization.Converters
{
    internal sealed class UnsupportedTypeConverter<T> : JsonConverter<T>
    {
        private readonly string? _errorMessage;
 
        public UnsupportedTypeConverter(string? errorMessage = null) => _errorMessage = errorMessage;
 
        public string ErrorMessage => _errorMessage ?? SR.Format(SR.SerializeTypeInstanceNotSupported, typeof(T).FullName);
 
        public override T Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) =>
            throw new NotSupportedException(ErrorMessage);
 
        public override void Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options) =>
            throw new NotSupportedException(ErrorMessage);
 
        internal override JsonSchema? GetSchema(JsonNumberHandling _) =>
            new JsonSchema { Comment = "Unsupported .NET type", Not = JsonSchema.CreateTrueSchema() };
    }
}