Sms XML fixer

SmsFixer.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Xml.Serialization;

namespace SmsFixer
{
  static class Program
  {
    /// <summary>
    /// The main entry point for the application.
    /// </summary>
    static void Main()
    {
      var smses = new Smses();

      // read the specific file from the run directory and deserialize
      // it's contents to an instance of the Smses object
      var serializer = new XmlSerializer(typeof(Smses));
      var stream = new FileStream("sms.xml", FileMode.Open);
      smses = (Smses) serializer.Deserialize(stream);

      // group the sms messages within the Smes object by Address;
      // pass the IGrouping into RemoveDuplicates;
      // order the returned data by date;
      // convert the IOrderedEnumerable into an array;
      var nonDuplicated =
           RemoveDuplicates(smses.Sms.GroupBy(sm => sm.address))
           .OrderBy(mes => mes.date).ToArray();

      // replace the Sms array in the Smses object with the new array
      // (without duplicates);
      // update the count value of the Smses object
      smses.Sms = nonDuplicated;
      smses.count = $"{smses.Sms.Count()}";

      // Serialise the contents of the new Smses object to disk
      var writer = new XmlSerializer(typeof(Smses));
      var fs = File.Create("sms-noDuplicates.xml");
      writer.Serialize(fs, smses);
      fs.Close();
    }

    /// <summary>
    /// Used to instanciate a new Sms object array based on the contents of
    //  the passed in object (Enumerable of Sms objects, grouped by their
    //  address value) and return it
    /// </summary>
    static Sms[] RemoveDuplicates(IEnumerable<IGrouping<string, Sms>> groupedMessages )
    {
      var nonDuplicates = new List<Sms>();
      foreach (var grouped in groupedMessages)
      {
        // groupedMessages is an IEnumerable, so we need to group each
        // element in the IEnumerable by it's body text.
        var messageBodiesNoDuplicates = grouped.GroupBy(mes => mes.body);
        if (messageBodiesNoDuplicates.Any())
        {
            // If there are any items in the new IGrouping (grouped),
            // we want to get all of the Key Value Pairs
            foreach (var groupedduplicate in messageBodiesNoDuplicates
                                              .Select(kvp => kvp.ToList()))
          {
            // Since groupedduplicate contains an IEnumerable of
            // Sms messages, grouped by their mesage body we can be
            // sure that they are the same.
            // Because of this, we only want the first in the list,
            // regardless of the rest of it's data, so add it to the
            // list of messages to return
            nonDuplicates.Add(groupedduplicate.First());
          }
        }
      }

      // return the list as an array
      // TODO: simplify this to return an IEnumberable, IList or similar
      return nonDuplicates.ToArray();
    }
  }

  #region Object Classes
  [XmlRoot("smses", Namespace = "", IsNullable = false)]
  public class Smses
  {
      // example smses entry
      //  <smses count="23274"
      //      backup_set="3ad6b18f-dcf7-4dfa-9ac5-4262d38ff805"
      //      backup_date="1455969600430">
      //          <sms ... content here... />
      //  </smses>
      [XmlAttribute]
      public string count { get; set; }
      [XmlAttribute]
      public string backup_set { get; set; }
      [XmlAttribute]
      public string backup_date { get; set; }
      [XmlElement("sms")]
      public Sms[] Sms { get; set; }

      //public Smses()
      //{
      //    Messages = new List<Sms>();
      //}
  }
  public class Sms
  {
      // example sms entry:
      //    <sms protocol="0"
      //      address="07123456789"
      //      date="1375363837534"
      //      type="2"
      //      subject="null"
      //      body="I think I found the penguin button! "
      //      toa="null"
      //      sc_toa="null"
      //      service_center="null"
      //      read="1"
      //      status="0"
      //      locked="0"
      //      date_sent="1375363865996"
      //      readable_date="1 Aug 2013 14:30:37"
      //      contact_name="Vincent Realperson" />
      [XmlAttribute]
      public string protocol { get; set; }
      [XmlAttribute]
      public string address { get; set; }
      [XmlAttribute]
      public string date { get; set; }
      [XmlAttribute]
      public string type { get; set; }
      [XmlAttribute]
      public string subject { get; set; }
      [XmlAttribute]
      public string body { get; set; }
      [XmlAttribute]
      public string toa { get; set; }
      [XmlAttribute]
      public string sc_toa { get; set; }
      [XmlAttribute]
      public string service_center { get; set; }
      [XmlAttribute]
      public string read { get; set; }
      [XmlAttribute]
      public string status { get; set; }
      [XmlAttribute]
      public string locked { get; set; }
      [XmlAttribute]
      public string date_sent { get; set; }
      [XmlAttribute]
      public string reabale_date { get; set; }
      [XmlAttribute]
      public string contact_name { get; set; }
  }
  #endregion
}