#region Copyright
// /************************************************************************
//    Copyright (c) 2016 Jamie Rees
//    File: ObjectCopier.cs
//    Created By: Jamie Rees
//   
//    Permission is hereby granted, free of charge, to any person obtaining
//    a copy of this software and associated documentation files (the
//    "Software"), to deal in the Software without restriction, including
//    without limitation the rights to use, copy, modify, merge, publish,
//    distribute, sublicense, and/or sell copies of the Software, and to
//    permit persons to whom the Software is furnished to do so, subject to
//    the following conditions:
//   
//    The above copyright notice and this permission notice shall be
//    included in all copies or substantial portions of the Software.
//   
//    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
//    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
//    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
//    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
//    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
//    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
//    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//  ************************************************************************/
#endregion
using Newtonsoft.Json;

namespace PlexRequests.Helpers
{
    /// <summary>
    /// Provides a method for performing a deep copy of an object.
    /// Binary Serialization is used to perform the copy.
    /// </summary>
    public static class ObjectCopier
    {
        /// <summary>
        /// <para>Initialize inner objects individually</para>
        /// For example in default constructor some list property initialized with some values,
        /// but in 'source' these items are cleaned -
        /// without <c>ObjectCreationHandling.Replace</c> default constructor values will be added to result
        /// </summary>
        private static readonly JsonSerializerSettings Settings = new JsonSerializerSettings { ObjectCreationHandling = ObjectCreationHandling.Replace };

        /// <summary>
        /// Perform a deep Copy of the object, using Json as a serialisation method.
        /// </summary>
        /// <typeparam name="T">The type of object being copied.</typeparam>
        /// <param name="source">The object instance to copy.</param>
        /// <returns>The copied object.</returns>
        public static T CloneJson<T>(this T source)
        {
            // Don't serialize a null object, simply return the default for that object
            return ReferenceEquals(source, null) ? default(T) : JsonConvert.DeserializeObject<T>(JsonConvert.SerializeObject(source), Settings);
        }
    }
}