add quilljs, create channel for syncing documents

lib/poex_web/utils/delta_utils.ex

@@ -0,0 +1,19 @@
+defmodule Poex.Utils.DeltaUtils do
+  alias Delta.Op
+
+  def convert_ops(map) do
+    ops = Map.get(map, "ops") || []
+
+    Enum.map(ops, fn op ->
+      type = Map.keys(op) |> List.first()
+      value = Map.get(op, type)
+      attrs = Map.get(op, "attributes")
+
+      case type do
+        "insert" -> Op.insert(value, attrs)
+        "delete" -> Op.delete(value)
+        "retain" -> Op.retain(value, attrs)
+      end
+    end)
+  end
+end

lib/poex_web/utils/utils.ex

@@ -0,0 +1,18 @@
+defmodule Poex.Utils do
+  def atomize_keys(%{__struct__: _} = map), do: map
+
+  def atomize_keys(map) when is_map(map),
+    do:
+      Map.new(map, fn {k, v} ->
+        {
+          atomize_key(k),
+          atomize_keys(v)
+        }
+      end)
+
+  def atomize_keys(list) when is_list(list), do: Enum.map(list, &atomize_keys(&1))
+  def atomize_keys(map), do: map
+
+  defp atomize_key(key) when is_bitstring(key), do: String.to_atom(key)
+  defp atomize_key(key), do: key
+end