Add interface method and implementation for retrieving the notes of a particular category.

Author: walterpinson

src/Core/Application/Services/INoteTaker.cs

@@ -23,5 +23,6 @@ public interface INoteTaker
         // Work with categorized notes
         CategoryDto TakeCategorizedNote(Guid categoryId, NewNoteMessage newNoteMessage);
         CategoryDto RemoveCategorizedNote(Guid categoryId, Guid noteId);
+        IList<NoteDto> ListCategorizedNotes(Guid categoryId);
     }
 }

src/Infrastructure.Server/NoteTaker.cs

@@ -163,21 +163,20 @@ public CategoryDto TakeCategorizedNote(Guid categoryId, NewNoteMessage newNoteMe
                 throw new ArgumentNullException(nameof(newNoteMessage));
             }
 
-            var category = _categoryRepository.Get(categoryId);
-            if (null == category) throw new NotFoundException("Category not found.");
-
-            category = _categoryFactory.Build(
-                category,
-                _noteFactory,
-                _subscriberFactory
-            );
+            var category = GetCategory(categoryId);
 
             category.AddNote(newNoteMessage.Text);
             category = _categoryRepository.Save(category);
 
             return _mapper.Map<CategoryDto>(category);
         }
 
+        public IList<NoteDto> ListCategorizedNotes(Guid categoryId)
+        {
+            var category = GetCategory(categoryId);
+            return _mapper.Map<IList<NoteDto>>(category.Notes);
+        }
+
         private ICategory GetDefaultCategory()
         {
             var defaultCategoryName = "default";
@@ -200,5 +199,19 @@ private ICategory GetDefaultCategory()
 
             return category;
         }
+
+        private ICategory GetCategory(Guid categoryId)
+        {
+            var category = _categoryRepository.Get(categoryId);
+            if (null == category) throw new NotFoundException("Category not found.");
+
+            category = _categoryFactory.Build(
+                category,
+                _noteFactory,
+                _subscriberFactory
+            );
+
+            return category;
+        }
     }
 }