// Copyright © 2019 The CefSharp Authors. All rights reserved.

//

// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

using System;

using System.IO;

using System.Runtime.Serialization.Json;

using System.Text;

namespace CefSharp.Web

{

/// <summary>

/// Represents a JsonString that is converted to a V8 Object

/// Used as a return type of bound methods

/// </summary>

public class JsonString

{

/// <summary>

/// JSON String

/// </summary>

public string Json { get; private set; }

/// <summary>

/// Default constructor

/// </summary>

/// <param name="json">JSON string</param>

public JsonString(string json)

{

if (json == null)

{

throw new ArgumentNullException("json");

}

Json = json;

}

/// <inheritdoc/>

public override string ToString()

{

return Json;

}

/// <summary>

/// Create a JsonString from the specfied object using the build in <see cref="DataContractJsonSerializer"/>

/// </summary>

/// <param name="obj">object to seriaize</param>

/// <param name="settings">optional settings</param>

/// <returns>If <paramref name="obj"/> is null then return nulls otherwise a JsonString.</returns>

public static JsonString FromObject(object obj, DataContractJsonSerializerSettings settings = null)

{

if (obj == null)

{

return null;

}

using (var ms = new MemoryStream())

{

var dataContractJsonSerializer = new DataContractJsonSerializer(obj.GetType(), settings);

dataContractJsonSerializer.WriteObject(ms, obj);

var jsonString = Encoding.UTF8.GetString(ms.ToArray());

if (string.IsNullOrEmpty(jsonString))

{

return null;

}

return new JsonString(jsonString);

}

}

}

}