zprp/Models/Product.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Text;

using Android.App;
using Android.Content;
using Android.OS;
using Android.Runtime;
using Android.Views;
using Android.Widget;

using Newtonsoft.Json;

namespace Eat.Models
{
    class Product 
    {
        [JsonProperty]
        public string Name
        {
            get; protected set;
        }

        [JsonProperty]
        public double Cost
        {
            get; protected set;
        }

        [JsonProperty]
        public int Kcal
        {
            get; protected set;
        }

        [JsonProperty]
        public double Fat
        {
            get; protected set;
        }

        [JsonProperty]
        public double Carbs
        {
            get; protected set;
        }

        [JsonProperty]
        public double Protein
        {
            get; protected set;
        }

        // Make sure they are always written in lowercase
        [JsonProperty]
        public List<string> Tags
        {
            get; protected set;
        } = new List<string>();

        public Product()
        {
            Name = "Unknown";
        }

        public Product(string name, double cost, double fat, double carbs, double protein, List<string> tags)
        {
            Name = name;
            Cost = cost;
            Kcal = Convert.ToInt32((fat * 9) + (carbs * 4) + (protein * 4)); 
            Fat = fat;
            Carbs = carbs;
            Protein = protein;
            Tags = tags;
        }

        public string Serialize()
        {
            return JsonConvert.SerializeObject(this);
        }

        public virtual void CalculateElements()
        {
            throw new Exception("Don't call this method from object of class Product");
        }
    }
}