using System.Collections.Generic;

​

public class Brand

{

    public int Id { get; set; }

    public string Name { get; set; }

}

​

public class Category

{

    public int Id { get; set; }

    public string Name { get; set; }

}

​

public class Merchant

{

    public int Id { get; set; }

    public string Name { get; set; }

}

​

public class Campaign

{

    public int Id { get; set; }

    public string Text { get; set; }

}

​

public class Product

{

    public Brand Brand { get; set; }

    public List<Category> Categories { get; set; }

    public List<Merchant> Merchants { get; set; }

    public List<Campaign> Campaigns { get; set; }

​

    public List<string> BrandCategories

    {

        get

        {

            var brandCategories = new List<string>();

            if (Brand != null && Categories != null)

            {

                foreach (var category in Categories)

                {

                    brandCategories.Add($"{Brand.Name} {category.Name}");

                }

            }

            return brandCategories;

        }

    }

​

    public List<string> BrandMerchant

    {

        get

        {

            var brandMerchants = new List<string>();

            if (Brand != null && Merchants != null)

            {

                foreach (var merchant in Merchants)

                {

                    brandMerchants.Add($"{Brand.Name} {merchant.Name}");

                }

            }

            return brandMerchants;

        }

    }

​

    public List<string> BrandCategoryMerchantCampaign

    {

        get

        {

            var brandCategoryMerchantCampaigns = new List<string>();

            if (Brand != null && Categories != null && Campaigns != null)

            {

                foreach (var category in Categories)

                {

                    if (Merchants != null && Merchants.Count > 0)

                    {

                        foreach (var merchant in Merchants)

                        {

                            foreach (var campaign in Campaigns)

                            {

                                brandCategoryMerchantCampaigns.Add($"{Brand.Name} {category.Name} {merchant.Name} {campaign.Text}");

                            }

                        }

                    }

                    else //ÖRNEK 2 İÇİN?

                    {

                        foreach (var campaign in Campaigns)

                        {

                            brandCategoryMerchantCampaigns.Add($"{Brand.Name} {category.Name} {campaign.Text}");

                        }

                    }

                }

            }

            return brandCategoryMerchantCampaigns;

        }

    }

​

    public static void Main()

    {

        var product1 = new Product

        {

            Brand = new Brand { Id = 1, Name = "Mavi" },

            Categories = new List<Category> { new Category { Id = 1, Name = "Erkek" }, new Category { Id = 2, Name = "Gömlek" } },

            Merchants = new List<Merchant> { new Merchant { Id = 1, Name = "FirmaA" }, new Merchant { Id = 2, Name = "FirmaB" } },

            Campaigns = new List<Campaign> { new Campaign { Id = 1, Text = "Kampanya1" }, new Campaign { Id = 2, Text = "Kampanya2" } }

        };

​

        var product2 = new Product

        {

            Brand = new Brand { Id = 1, Name = "Mavi" },

            Categories = new List<Category> { new Category { Id = 1, Name = "Gömlek" } },

            Campaigns = new List<Campaign> { new Campaign { Id = 1, Text = "Kampanya1" } }

        };

​

        List<string> brandCategories1 = product1.BrandCategories;

        List<string> brandMerchant1 = product1.BrandMerchant;

        List<string> brandCategoryMerchantCampaign1 = product1.BrandCategoryMerchantCampaign;

​

        List<string> brandCategories2 = product2.BrandCategories;

        List<string> brandMerchant2 = product2.BrandMerchant;

        List<string> brandCategoryMerchantCampaign2 = product2.BrandCategoryMerchantCampaign;

​

    }

}

​