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# Pleroma: A lightweight social networking server
# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.EctoType.ActivityPub.ObjectValidators.DateTime do
@moduledoc """
The AP standard defines the date fields in AP as xsd:DateTime. Elixir's
DateTime can't parse this, but it can parse the related iso8601. This
module punches the date until it looks like iso8601 and normalizes to
it.
DateTimes without a timezone offset are treated as UTC.
Reference: https://www.w3.org/TR/activitystreams-vocabulary/#dfn-published
"""
use Ecto.Type
def type, do: :string
def cast(datetime) when is_binary(datetime) do
with {:ok, datetime, _} <- DateTime.from_iso8601(datetime) do
{:ok, DateTime.to_iso8601(datetime)}
else
{:error, :missing_offset} -> cast("#{datetime}Z")
_e -> :error
end
end
def cast(_), do: :error
def dump(data) do
{:ok, data}
end
def load(data) do
{:ok, data}
end
end
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