Remove datetime conversions

lib/stripe/converter.ex

@@ -27,10 +27,6 @@ defmodule Stripe.Converter do
 
   defp maybe_build_struct(nil, value), do: value
   defp maybe_build_struct(_module, nil), do: nil
-  defp maybe_build_struct(DateTime, value) do
-    {:ok, value} = DateTime.from_unix(value)
-    value
-  end
   defp maybe_build_struct(module, value) when is_map(value) do
     stripe_map_to_struct(module, value)
   end
@@ -45,7 +41,6 @@ defmodule Stripe.Converter do
   defp convert_key(key) when is_atom(key), do: to_string(key)
   defp convert_key(key) when is_binary(key), do: String.to_atom(key)
 
-  defp convert_value(%DateTime{} = value), do: value
   defp convert_value(value) when is_map(value) do
     Enum.reduce(value, %{}, fn({key, value}, acc) ->
       Map.put(acc, String.to_atom(key), convert_value(value))

lib/stripe/customer.ex

@@ -22,9 +22,7 @@ defmodule Stripe.Customer do
     :metadata
   ]
 
-  @relationships %{
-    created: DateTime
-  }
+  @relationships %{}
 
   @plural_endpoint "customers"
 

lib/stripe/event.ex

@@ -18,9 +18,7 @@ defmodule Stripe.Event do
     :request, :type, :user_id
   ]
 
-  @relationships %{
-    created: DateTime
-  }
+  @relationships %{}
 
   @plural_endpoint "events"
 

lib/stripe/file_upload.ex

@@ -16,9 +16,7 @@ defmodule Stripe.FileUpload do
     :id, :object, :created, :purpose, :size, :type, :metadata
   ]
 
-  @relationships %{
-    created: DateTime
-  }
+  @relationships %{}
 
   @plural_endpoint "files"
 

lib/stripe/plan.ex

@@ -21,9 +21,7 @@ defmodule Stripe.Plan do
     :livemode, :metadata, :name, :statement_descriptor, :trial_period_days
   ]
 
-  @relationships %{
-    created: DateTime
-  }
+  @relationships %{}
 
   @plural_endpoint "plans"
 

lib/stripe/subscription.ex

@@ -24,14 +24,7 @@ defmodule Stripe.Subscription do
   ]
 
   @relationships %{
-    created: DateTime,
-    current_period_end: DateTime,
-    current_period_start: DateTime,
-    ended_at: DateTime,
-    plan: Stripe.Plan,
-    start: DateTime,
-    trial_end: DateTime,
-    trial_start: DateTime
+    plan: Stripe.Plan
   }
 
   @plural_endpoint "subscriptions"
@@ -67,14 +60,6 @@ defmodule Stripe.Subscription do
     :metadata
   ]
 
-  @doc """
-  Returns a map of relationship keys and their Struct name.
-  Relationships must be specified for the relationship to
-  be returned as a struct.
-  """
-  @spec relationships :: Keyword.t
-  def relationships, do: @relationships
-
   @doc """
   Create a subscription.
   """

lib/stripe/token.ex

@@ -19,8 +19,7 @@ defmodule Stripe.Token do
   ]
 
   @relationships %{
-    card: Stripe.Card,
-    created: DateTime
+    card: Stripe.Card
   }
 
   @plural_endpoint "tokens"

lib/stripe/util.ex

@@ -1,26 +1,6 @@
 defmodule Stripe.Util do
   @moduledoc false
 
-  @spec get_date(map, atom | String.t) :: DateTime.t | nil
-  def get_date(m, k) do
-    case Map.get(m, k) do
-      nil -> nil
-      ts -> datetime_from_timestamp(ts)
-    end
-  end
-
-  defp datetime_from_timestamp(ts) when is_binary ts do
-    ts = case Integer.parse ts do
-      :error -> 0
-      {i, _r} -> i
-    end
-    datetime_from_timestamp ts
-  end
-
-  defp datetime_from_timestamp(ts) when is_number ts do
-    DateTime.from_unix!(ts)
-  end
-
   @doc """
   Performs a root-level conversion of map keys from strings to atoms.
 

test/stripe/converter_test.exs

@@ -17,8 +17,7 @@ defmodule Stripe.ConverterTest do
   defmodule AuthToken do
     defstruct [:id, :card, :client_ip, :created, :livemode, :type, :used]
     def relationships, do: %{
-      card: ConverterTest.CreditCard,
-      created: DateTime
+      card: ConverterTest.CreditCard
     }
   end
 
@@ -83,20 +82,7 @@ defmodule Stripe.ConverterTest do
         country: "US",
         exp_month: 8
       },
-      created: %DateTime{
-        calendar: Calendar.ISO,
-        day: 10,
-        hour: 18,
-        microsecond: {0, 0},
-        minute: 37,
-        month: 5,
-        second: 25,
-        std_offset: 0,
-        time_zone: "Etc/UTC",
-        utc_offset: 0,
-        year: 2016,
-        zone_abbr: "UTC"
-      }
+      created: 1462905445
     }
 
     result = Converter.stripe_map_to_struct(