mobilizon.chapril.org-mobil.../lib/service/notifications/scheduler.ex

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Elixir
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defmodule Mobilizon.Service.Notifications.Scheduler do
@moduledoc """
Allows to insert jobs
"""
alias Mobilizon.{Actors, Users}
alias Mobilizon.Actors.Actor
alias Mobilizon.Events.{Event, Participant}
alias Mobilizon.Service.Workers.Notification
alias Mobilizon.Users.{Setting, User}
require Logger
@spec trigger_notifications_for_participant(Participant.t()) :: {:ok, nil}
def trigger_notifications_for_participant(%Participant{} = participant) do
before_event_notification(participant)
on_day_notification(participant)
weekly_notification(participant)
{:ok, nil}
end
def before_event_notification(%Participant{
id: participant_id,
event: %Event{begins_on: begins_on},
actor: %Actor{user_id: user_id}
})
when not is_nil(user_id) do
case Users.get_setting(user_id) do
%Setting{notification_before_event: true} ->
Notification.enqueue(:before_event_notification, %{participant_id: participant_id},
scheduled_at: DateTime.add(begins_on, -3600, :second)
)
_ ->
{:ok, nil}
end
end
def before_event_notification(_), do: {:ok, nil}
def on_day_notification(%Participant{
event: %Event{begins_on: begins_on},
actor: %Actor{user_id: user_id}
})
when not is_nil(user_id) do
case Users.get_setting(user_id) do
%Setting{notification_on_day: true, timezone: timezone} ->
%DateTime{hour: hour} = begins_on_shifted = shift_zone(begins_on, timezone)
Logger.debug("Participation event start at #{inspect(begins_on_shifted)} (user timezone)")
send_date =
cond do
DateTime.compare(begins_on, DateTime.utc_now()) == :lt ->
nil
hour > 8 ->
# If the event is after 8 o'clock
%{begins_on_shifted | hour: 8, minute: 0, second: 0, microsecond: {0, 0}}
true ->
# If the event is before 8 o'clock, we send the notification the day before,
# unless this is already passed
begins_on_shifted
|> DateTime.add(-24 * 3_600)
|> (&%{&1 | hour: 8, minute: 0, second: 0, microsecond: {0, 0}}).()
end
Logger.debug(
"Participation notification should be sent at #{inspect(send_date)} (user timezone)"
)
if is_nil(send_date) or DateTime.compare(DateTime.utc_now(), send_date) == :gt do
{:ok, "Too late to send same day notifications"}
else
Notification.enqueue(:on_day_notification, %{user_id: user_id}, scheduled_at: send_date)
end
_ ->
{:ok, "User has disable on day notifications"}
end
end
def on_day_notification(_), do: {:ok, nil}
def weekly_notification(%Participant{
event: %Event{begins_on: begins_on},
actor: %Actor{user_id: user_id}
})
when not is_nil(user_id) do
%User{settings: settings, locale: locale} = Users.get_user_with_settings!(user_id)
case settings do
%Setting{notification_each_week: true, timezone: timezone} ->
%DateTime{} = begins_on_shifted = shift_zone(begins_on, timezone)
Logger.debug(
"Participation event start at #{inspect(begins_on_shifted)} (user timezone is #{
timezone
})"
)
notification_date =
if Date.compare(begins_on, DateTime.utc_now()) == :gt do
notification_day = calculate_first_day_of_week(DateTime.to_date(begins_on), locale)
{:ok, %NaiveDateTime{} = notification_date} =
notification_day |> NaiveDateTime.new(~T[08:00:00])
# This is the datetime when the notification should be sent
{:ok, %DateTime{} = notification_date} =
DateTime.from_naive(notification_date, timezone)
if Date.compare(notification_date, DateTime.utc_now()) == :gt do
notification_date
else
nil
end
else
nil
end
Logger.debug(
"Participation notification should be sent at #{inspect(notification_date)} (user timezone)"
)
if is_nil(notification_date) do
{:ok, "Too late to send weekly notifications"}
else
Notification.enqueue(:weekly_notification, %{user_id: user_id},
scheduled_at: notification_date
)
end
_ ->
{:ok, "User has disabled weekly notifications"}
end
end
def weekly_notification(_), do: {:ok, nil}
def pending_participation_notification(%Event{
id: event_id,
organizer_actor_id: organizer_actor_id,
local: true
}) do
with %Actor{user_id: user_id} when not is_nil(user_id) <-
Actors.get_actor(organizer_actor_id),
%User{
locale: locale,
settings: %Setting{
notification_pending_participation: notification_pending_participation,
timezone: timezone
}
} <- Users.get_user_with_settings!(user_id) do
send_at =
case notification_pending_participation do
:none ->
nil
:direct ->
:direct
:one_day ->
calculate_next_day_notification(Date.utc_today(), timezone, locale)
:one_hour ->
DateTime.utc_now()
|> DateTime.shift_zone!(timezone)
|> (&%{&1 | minute: 0, second: 0, microsecond: {0, 0}}).()
end
params = %{
user_id: user_id,
event_id: event_id
}
cond do
# Sending directly
send_at == :direct ->
Notification.enqueue(:pending_participation_notification, params)
# Not sending
is_nil(send_at) ->
{:ok, nil}
# Sending to calculated time
true ->
Notification.enqueue(:pending_participation_notification, params, scheduled_at: send_at)
end
else
_ -> {:ok, nil}
end
end
def pending_participation_notification(_), do: {:ok, nil}
defp shift_zone(datetime, timezone) do
case DateTime.shift_zone(datetime, timezone) do
{:ok, shift_datetime} -> shift_datetime
{:error, _} -> datetime
end
end
defp calculate_first_day_of_week(%Date{} = date, locale) do
day_number = Date.day_of_week(date)
first_day_number = Cldr.Calendar.first_day_for_locale(locale)
if day_number == first_day_number,
do: date,
else: calculate_first_day_of_week(Date.add(date, -1), locale)
end
defp calculate_next_day_notification(%Date{} = day, timezone, locale) do
send_at = date_to_datetime(day, ~T[18:00:00], timezone)
if DateTime.compare(send_at, DateTime.utc_now()) == :lt do
day
|> Date.add(1)
|> calculate_first_day_of_week(locale)
|> date_to_datetime(~T[18:00:00], timezone)
else
send_at
end
end
defp date_to_datetime(%Date{} = day, time, timezone) do
{:ok, datetime} = NaiveDateTime.new(day, time)
{:ok, datetime} = DateTime.from_naive(datetime, timezone)
datetime
end
end