debianize-mobilizon/lib/mobilizon/events/utils.ex

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defmodule Mobilizon.Events.Utils do
@moduledoc """
Utils related to events
"""
@spec calculate_notification_time(DateTime.t()) :: DateTime.t()
def calculate_notification_time(begins_on, options \\ []) do
now = Keyword.get(options, :now, DateTime.utc_now())
notify_at = DateTime.add(now, 1800)
# If the event begins in less than half an hour, send the notification right now
if DateTime.compare(notify_at, begins_on) == :lt do
notify_at
else
now
end
end
end