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// 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;
using System.Text.Json.Serialization;
using Microsoft.JSInterop.Implementation;
namespace Microsoft.JSInterop.Infrastructure;
internal sealed class JSStreamReferenceJsonConverter : JsonConverter<IJSStreamReference>
{
private static readonly JsonEncodedText _jsStreamReferenceLengthKey = JsonEncodedText.Encode("__jsStreamReferenceLength");
private readonly JSRuntime _jsRuntime;
public JSStreamReferenceJsonConverter(JSRuntime jsRuntime)
{
_jsRuntime = jsRuntime;
}
public override bool CanConvert(Type typeToConvert)
=> typeToConvert == typeof(IJSStreamReference) || typeToConvert == typeof(JSStreamReference);
public override IJSStreamReference? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
{
long? id = null;
long? length = null;
while (reader.Read() && reader.TokenType != JsonTokenType.EndObject)
{
if (reader.TokenType == JsonTokenType.PropertyName)
{
if (id is null && reader.ValueTextEquals(JSObjectReferenceJsonWorker.JSObjectIdKey.EncodedUtf8Bytes))
{
reader.Read();
id = reader.GetInt64();
}
else if (length is null && reader.ValueTextEquals(_jsStreamReferenceLengthKey.EncodedUtf8Bytes))
{
reader.Read();
length = reader.GetInt64();
}
else
{
throw new JsonException($"Unexpected JSON property {reader.GetString()}.");
}
}
else
{
throw new JsonException($"Unexpected JSON token {reader.TokenType}");
}
}
if (!id.HasValue)
{
throw new JsonException($"Required property {JSObjectReferenceJsonWorker.JSObjectIdKey} not found.");
}
if (!length.HasValue)
{
throw new JsonException($"Required property {_jsStreamReferenceLengthKey} not found.");
}
return new JSStreamReference(_jsRuntime, id.Value, length.Value);
}
public override void Write(Utf8JsonWriter writer, IJSStreamReference value, JsonSerializerOptions options)
{
JSObjectReferenceJsonWorker.WriteJSObjectReference(writer, (JSStreamReference)value);
}
}
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