scottmascio2115 · December 18, 2016 20:14 · Dec 10, 2016 · Dec 9, 2016
diff --git a/todo.exs b/todo.exs
@@ -1,10 +1,26 @@
 defmodule Todo do
   use GenServer
 
-  def init(tasks // "") do
-    {:ok, tasks}
+  ## Client side code
+  def start(tasks \\ "") do
+   {:ok, pid} = GenServer.start(__MODULE__, tasks)
+   pid
   end
 
+  def add_task(pid, task) do
+    GenServer.cast(pid, {:add, task})
+  end
+
+  def remove_task(pid, task) do
+    GenServer.cast(pid, {:remove, task})
+  end
+
+  def all_tasks(pid) do
+    GenServer.call(pid, :all)
+  end
+
+  ## Server side code:
+
   def handle_cast({:add, task}, tasks) do
     {:noreply, tasks <> " | " <>  task}
   end
@@ -18,10 +34,9 @@ defmodule Todo do
   end
 end
 
-# {:ok, pid} = GenServer.start(Todo, "foo")
-# tasks = GenServer.call(pid, :all)
-# GenServer.cast(pid, {:add, "bar"})
-# GenServer.cast(pid, {:remove, "bar"})
+# pid = Todo.start
+# Todo.add_task(pid, "Make eggs")
+# Todo.all_tasks(pid)
 
 ## TODO
-  # Encapsolate the GenServer logic in the module
+  # Ask user for what it wants to do.
diff --git a/todo.exs b/todo.exs
@@ -0,0 +1,27 @@
+defmodule Todo do
+  use GenServer
+
+  def init(tasks // "") do
+    {:ok, tasks}
+  end
+
+  def handle_cast({:add, task}, tasks) do
+    {:noreply, tasks <> " | " <>  task}
+  end
+
+  def handle_cast({:remove, task}, tasks) do
+    {:noreply, tasks |> String.replace("| #{task}", "")}
+  end
+
+  def handle_call(:all, _from,  tasks) do
+    {:reply, tasks, tasks}
+  end
+end
+
+# {:ok, pid} = GenServer.start(Todo, "foo")
+# tasks = GenServer.call(pid, :all)
+# GenServer.cast(pid, {:add, "bar"})
+# GenServer.cast(pid, {:remove, "bar"})
+
+## TODO
+  # Encapsolate the GenServer logic in the module