Add adapter

lib/code_corps/map_utils.ex

@@ -0,0 +1,7 @@
+defmodule CodeCorps.MapUtils do
+  def rename(map, old_key, new_key) do
+    map
+    |> Map.put(new_key, map |> Map.get(old_key))
+    |> Map.delete(old_key)
+  end
+end

lib/code_corps/stripe/adapters/stripe_account.ex

@@ -0,0 +1,11 @@
+defmodule CodeCorps.Stripe.Adapters.StripeAccount do
+  import CodeCorps.MapUtils, only: [rename: 3]
+
+  def params_from_stripe(%{} = stripe_map) do
+    stripe_map |> rename("id", "id_from_stripe")
+  end
+
+  def params_to_stripe(%{} = ecto_map) do
+    ecto_map |> rename("id_from_stripe", "id")
+  end
+end

test/lib/code_corps/stripe/adapters/stripe_account_test.exs

@@ -0,0 +1,20 @@
+defmodule CodeCorps.Stripe.Adapters.StripeAccountTest do
+  use ExUnit.Case, async: true
+
+  import CodeCorps.Stripe.Adapters.StripeAccount, only: [params_to_stripe: 1, params_from_stripe: 1]
+
+  @stripe_map %{"id" => "str_123", "foo" => "bar"}
+  @local_map %{"id_from_stripe" => "str_123", "foo" => "bar"}
+
+  describe "params_from_stripe/1" do
+    test "converts from stripe map to local properly" do
+      assert @stripe_map |> params_from_stripe == @local_map
+    end
+  end
+
+  describe "params_to_stripe/1" do
+    test "converts from local to stripe map properly" do
+      assert @local_map |> params_to_stripe == @stripe_map
+    end
+  end
+end