Operations pipeline start

WotBlitzStatisticsPro.Logic/Pipeline/Pipeline.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace WotBlitzStatisticsPro.Logic.Pipeline
+{
+    public class Pipeline<TContext>: IPipeline<TContext>
+    {
+        private readonly IOperationFactory _operationFactory;
+        private readonly List<Type> _operations = new List<Type>();
+
+        public Pipeline(IOperationFactory operationFactory)
+        {
+            _operationFactory = operationFactory;
+        }
+
+        public IOperation<TContext> Build()
+        {
+            var allOperationTypes = _operations.ToArray();
+            var lastOperationType = allOperationTypes.LastOrDefault();
+            if (lastOperationType == null)
+            {
+                return null;
+            }
+            var nextOperation = new OperationMediator<TContext>(_operationFactory.Create<TContext>(lastOperationType), null);
+
+            for (int i = allOperationTypes.Length - 2; i >= 0; i--)
+            {
+                nextOperation = new OperationMediator<TContext>(_operationFactory.Create<TContext>(allOperationTypes[i]), nextOperation);
+            }
+
+            return nextOperation;
+        }
+
+        public IPipeline<TContext> AddOperation<TOperation>() where TOperation : IOperation<TContext>
+        {
+            _operations.Add(typeof(TOperation));
+            return this;
+        }
+    }
+}