lmplement all actions

Repositories/IBreederRepository.cs

@@ -0,0 +1,13 @@
+using GerbilManager.Models;
+
+namespace GerbilManager.Repositories
+{
+    public interface IBreederRepository
+    {
+        IEnumerable<Breeder> GetBreeders();
+
+        Breeder GetBreeder(Guid id);
+
+        void CreateBreeder(Breeder breeder);
+    }
+}

Repositories/IGerbilRepository.cs

@@ -7,5 +7,11 @@ namespace GerbilManager.Repositories
         IEnumerable<Gerbil> GetGerbils();
 
         Gerbil GetGerbil(Guid id);
+
+        void CreateGerbil(Gerbil gerbil);
+
+        void UpdateGerbil(Gerbil gerbil);
+
+        void DeleteGerbil(Gerbil gerilb);
     }
 }

Repositories/ILitterRepostitory.cs

@@ -0,0 +1,13 @@
+using GerbilManager.Models;
+
+namespace GerbilManager.Repositories
+{
+    public interface ILitterRepository
+    {
+        IEnumerable<Litter> GetLitters();
+
+        Litter GetLitter(Guid id);
+
+        void CreateLitter(Litter breeder);
+    }
+}

Repositories/InMemGerbilRepository.cs

@@ -17,6 +17,23 @@ namespace GerbilManager.Repositories
         }
 
         public Gerbil GetGerbil(Guid id) => _gerbilList.SingleOrDefault(x => x.Id == id);
+
+        public void CreateGerbil(Gerbil gerbil)
+        {
+            _gerbilList.Add(gerbil);
+        }
+
+        public void UpdateGerbil(Gerbil gerbil)
+        {
+            var index = this._gerbilList.FindIndex(existingGerbil => existingGerbil.Id == gerbil.Id);
+            _gerbilList[index] = gerbil;
+        }
+
+        public void DeleteGerbil(Gerbil gerbil)
+        {
+            var index = this._gerbilList.FindIndex(existingGerbil => existingGerbil.Id == gerbil.Id);
+            _gerbilList.RemoveAt(index);
+        }
     }
 
 }