using System;

using System.Configuration;

using FizzWare.NBuilder;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        var rdn = new Random();

        Account acc;

        List<Subscription> subs;

        List<AddOn> addOns;

        acc = Builder<Account>.CreateNew().With(x => x.ID = "1").Build();

        subs = (List<Subscription>)Builder<Subscription>.CreateListOfSize(20).All().With(s => s.ID).Build();

        addOns = (List<AddOn>)Builder<AddOn>.CreateListOfSize(20).All().With(a => a.Quantity = 3).Build();

        GenerateAddOnVariations(rdn, addOns);

        GenerateSubscriptionVariationsAddingAddOn(rdn, subs, addOns);

        acc.Subscriptions = subs;

        foreach (var item in acc.Subscriptions)

        {

            Console.WriteLine(item.ID);

        }

​

        var groupAddOnsByCode = acc.Subscriptions.Select(s => s.AddOns.GroupBy(a => a.Variations.Select(v => v.Code).FirstOrDefault())).ToList();

    }

​

    public class Account

    {

        /// <summary>

        /// Account ID

        /// </summary>

        public string ID

        {

            get;

            set;

        }

​

        /// <summary>

        /// A List with all subscriptions

        /// </summary>

        public IEnumerable<Subscription> Subscriptions

        {

            get;

            set;

        }

    }

​

    public class Subscription

    {

        /// <summary>

        /// Subscription ID

        /// </summary>

        public string ID

        {

            get;

            set;

        }

​

        /// <summary>

        /// Quantity of the subscription.

        /// </summary>

        public int Quantity

        {

            get;

            set;

        }

​

        /// <summary>

        /// A list with all subscription add ons

        /// </summary>

        public IEnumerable<AddOn> AddOns

        {

            get;

            set;

        }

​

        /// <summary>

        /// A List with all subscription variations

        /// </summary>

        public IEnumerable<Variation> Variations

        {

            get;

            set;

        }

    }

​

    public class AddOn

    {

        /// <summary>

        /// Gets or Sets add on id

        /// </summary>

        public string ID

        {

            get;

            set;

        }

​

        /// <summary>

        /// Quantity of the add on.

        /// </summary>

        public int Quantity

        {

            get;

            set;

        }

​

        /// <summary>

        /// A List with all add on variations

        /// </summary>

        public IEnumerable<Variation> Variations

        {

            get;

            set;

        }

    }

​

    public class Variation

    {

        /// <summary>

        /// Variation ID

        /// </summary>

        public string ID

        {

            get;

            set;

        }

​

        /// <summary>

        /// offerUri

        /// </summary>

        public string Code

        {

            get;

            set;

        }

​

        /// <summary>

        /// Variation Value

        /// </summary>

        public string Value

        {

            get;

            set;

        }

​

        /// <summary>

        /// Variation Name

        /// </summary>

        public string Name

        {

            get;

            set;

        }

​

        /// <summary>

        /// External Value

        /// </summary>

        public string ValueExternal

        {

            get;

            set;

        }

    }

​

    private static void GenerateAddOnVariations(Random rdn, List<AddOn> addOns)

    {

        foreach (var addOn in addOns)

        {

            var _genAddOnVar = Builder<Variation>.CreateListOfSize(1).All().With(v => v.Code = rdn.Next(1, 4).ToString()).Build();

            addOn.Variations = _genAddOnVar;

        }

    }

​

    private static void GenerateSubscriptionVariationsAddingAddOn(Random rdn, List<Subscription> subs, List<AddOn> addOns)

    {

        foreach (var sub in subs)

        {

            var _genSubVar = Builder<Variation>.CreateListOfSize(1).All().With(v => v.Code = rdn.Next(1, 4).ToString()).Build();

            sub.AddOns = addOns;

            sub.Variations = _genSubVar;

        }

    }

}