using Newtonsoft.Json;

using System;

using System.Collections.Generic;

using System.Linq;

​

    public class TableCheck

    {

        public string TableNumber { get; set; }

        public string TableId { get; set; }

        public List<TableMenuItem> tableMenuItems { get; set; }

        public decimal TotalPrice { get; set; }

    }

​

    public class TableMenuItem

    {

        public string Id { get; set; }

        public string Name { get; set; }

        public List<TableMenuItemCondiment> tableMenuItemCondiment { get; set; }

        public double Price { get; set; }

        public double Count { get; set; }

    }

    public class TableMenuItemCondiment

    {

        public string Id { get; set; }

        public string Name { get; set; }

        public double Price { get; set; }

​

    }

​

public class TableMenuItemComparer : IEqualityComparer<TableMenuItem>

    {

        public bool Equals(TableMenuItem x, TableMenuItem y)

        {

            if (x.tableMenuItemCondiment == null && y.tableMenuItemCondiment == null)

            {

                return x.Id == y.Id;

            }

​

            else if (x.tableMenuItemCondiment == null && y.tableMenuItemCondiment != null ||

                     x.tableMenuItemCondiment != null && y.tableMenuItemCondiment == null)

            {

                return false;

            }

​

            return x.Id == y.Id &&

                   x.tableMenuItemCondiment.SequenceEqual(y.tableMenuItemCondiment, new TableMenuItemCondimentComparer());

        }

​

        public int GetHashCode(TableMenuItem obj)

        {

            if (obj.tableMenuItemCondiment == null)

            {

                return obj.Id.GetHashCode();

            }

​

            return obj.Id.GetHashCode() ^ obj.tableMenuItemCondiment.Aggregate(0, (a, c) => a ^ c.Id.GetHashCode() ^ c.Name.GetHashCode() ^ c.Price.GetHashCode());

        }

    }

​

    public class TableMenuItemCondimentComparer : IEqualityComparer<TableMenuItemCondiment>

    {

        public bool Equals(TableMenuItemCondiment x, TableMenuItemCondiment y)

        {

            return x.Id == y.Id &&

                   x.Name == y.Name &&

                   x.Price == y.Price;

        }

​

        public int GetHashCode(TableMenuItemCondiment obj)

        {

            return obj.Id.GetHashCode() ^

                   obj.Name.GetHashCode() ^

                   obj.Price.GetHashCode();

        }

    }

public class Program

{

    public static void Main()

    {

                   var json = @"{

  'TableNumber': '3',

  'TableId': '81872d39-9480-4d2d-abfc-b8e4f33a43b6',

  'tableMenuItems': [

    {

      'Id': '4664a2d3-c0af-443d-8af5-2bd21e71838b',

      'Name': 'Bonfile',

      'tableMenuItemCondiment': [

        {

          'Id': '9b1f01a0-0313-46b6-b7f1-003c0e846136',

          'Name': 'Kekikkli',

          'Price': 0

        },

        {

          'Id': '38a9cce6-f20c-4f78-b6c9-c15e79ecc8f1',

          'Name': 'mayonez',

          'Price': 0

        },

        {

          'Id': 'cb3a7811-668b-4e45-bce3-e6b2b13af9e1',

          'Name': 'Rare',

          'Price': 0

        }

      ],

      'Price': 45,

      'Count': 1

    },

    {

      'Id': '4664a2d3-c0af-443d-8af5-2bd21e71838b',

      'Name': 'Bonfile',

      'tableMenuItemCondiment': [

        {

          'Id': 'c3c62f7d-987d-4523-849c-932334db4e4f',

          'Name': 'Kekikkli',

          'Price': 0

        },

        {

          'Id': 'cbb16028-6e77-4e4b-a1c9-d969e804f093',

          'Name': 'mayonez',

          'Price': 0

        },

        {

          'Id': '16f9efc2-73d3-4a09-87fc-e1fb76957ed2',

          'Name': 'Rare',

          'Price': 0

        }

      ],

      'Price': 45,

      'Count': 1

    }

  ],

  'TotalPrice': 90

}";

        var tableCheckObject = JsonConvert.DeserializeObject<TableCheck>(json);

​

            var result = new TableCheck()

            {

                TableNumber = tableCheckObject.TableNumber,

                TableId = tableCheckObject.TableId,

                TotalPrice = tableCheckObject.TotalPrice,

                tableMenuItems = tableCheckObject.tableMenuItems

                    .GroupBy(item => item, new TableMenuItemComparer())

                    .Select(grp => new TableMenuItem

                    {

                        Id = grp.Key.Id,

                        Name = grp.Key.Name,

                        tableMenuItemCondiment = grp.Key.tableMenuItemCondiment,

                        Price = grp.Key.Price,

                        Count = grp.Count()

                    })

                    .ToList()

            };

        Console.WriteLine(JsonConvert.SerializeObject(result, Formatting.Indented));

​

    }

}