Add Draw ID

Stratis.Guru/Models/Draws.cs

 using System;
 using System.Collections.ObjectModel;
+using System.Linq;
 using System.Threading.Tasks;
 using MongoDB.Bson;
 using MongoDB.Driver;
@@ -17,6 +18,11 @@ namespace Stratis.Guru.Models
             _databaseContext = databaseContext;
         }
 
+        public string GetLastDraw()
+        {
+            return _databaseContext.Draws.Find(x => true).ToList().OrderByDescending(x => x.DrawDate).FirstOrDefault().Id.ToString();
+        }
+
         public async Task InitDrawAsync(long nextDrawTimestamp)
         {
             if(!_databaseContext.Draws.Find(x => x.DrawDate.Equals(nextDrawTimestamp)).Any())

Stratis.Guru/Models/IDraws.cs

@@ -6,6 +6,7 @@ namespace Stratis.Guru.Models
 {
     public interface IDraws
     {
-        Task InitDrawAsync(long nextDrawTimestamp);
+        Task InitDrawAsync(long nextDrawTimestamp); 
+        string GetLastDraw();
     }
 }
\ No newline at end of file

Stratis.Guru/Models/Participation.cs

@@ -11,5 +11,6 @@ namespace Stratis.Guru.Models
         public string WithdrawAddress { get; set; }
         public BsonDateTime CreationDate { get; set; }
         public string Nickname { get; internal set; }
+        public string Draw { get; internal set; }
     }
 }
\ No newline at end of file

Stratis.Guru/Models/Participations.cs

@@ -5,21 +5,23 @@ namespace Stratis.Guru.Models
     public class Participations : IParticipation
     {
         private DatabaseContext _databaseContext;
+        private IDraws _draws;
 
-        public Participations(DatabaseContext databaseContext)
+        public Participations(DatabaseContext databaseContext, IDraws draws)
         {
             _databaseContext = databaseContext;
+            _draws = draws;
         }
 
         public void StoreParticipation(string ticket, string nickname, string address)
         {
-            //TODO: store lottery id
             _databaseContext.Participations.InsertOne(new Participation
             {
                 CreationDate = DateTime.Now,
                 Ticket = ticket,
                 Nickname = nickname,
-                WithdrawAddress = address
+                WithdrawAddress = address,
+                Draw = _draws.GetLastDraw()
             });
         }
     }