mobilizon/lib/service/date_time/date_time.ex

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defmodule Mobilizon.Service.DateTime do
@moduledoc """
Module to represent a datetime in a given locale
"""
alias Cldr.DateTime.Relative
def datetime_to_string(%DateTime{} = datetime, locale \\ "en", format \\ :medium) do
Mobilizon.Cldr.DateTime.to_string!(datetime, format: format, locale: locale_or_default(locale))
end
def datetime_to_time_string(%DateTime{} = datetime, locale \\ "en", format \\ :short) do
Mobilizon.Cldr.Time.to_string!(datetime, format: format, locale: locale_or_default(locale))
end
@spec datetime_tz_convert(DateTime.t(), String.t()) :: DateTime.t()
def datetime_tz_convert(%DateTime{} = datetime, timezone) do
case DateTime.shift_zone(datetime, timezone) do
{:ok, datetime_with_user_tz} ->
datetime_with_user_tz
_ ->
datetime
end
end
@spec datetime_relative(DateTime.t(), String.t()) :: String.t()
def datetime_relative(%DateTime{} = datetime, locale \\ "en") do
Relative.to_string!(datetime, Mobilizon.Cldr,
relative_to: DateTime.utc_now(),
locale: locale_or_default(locale)
)
end
defp locale_or_default(locale) do
if Mobilizon.Cldr.known_locale_name(locale) do
locale
else
"en"
end
end
end