mobilizon/lib/web/email/activity.ex

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defmodule Mobilizon.Web.Email.Activity do
@moduledoc """
Handles emails sent about activity notifications.
"""
use Bamboo.Phoenix, view: Mobilizon.Web.EmailView
import Bamboo.Phoenix
import Mobilizon.Web.Gettext
alias Mobilizon.Activities.Activity
alias Mobilizon.Actors.Actor
alias Mobilizon.Config
alias Mobilizon.Web.{Email, Gettext}
@spec direct_activity(String.t(), list(), String.t()) ::
Bamboo.Email.t()
def direct_activity(
email,
activities,
options \\ []
) do
locale = Keyword.get(options, :locale, "en")
single_activity = Keyword.get(options, :single_activity, false)
Gettext.put_locale(locale)
subject =
gettext(
"Activity notification for %{instance}",
instance: Config.instance_name()
)
chunked_activities = chunk_activities(activities)
Email.base_email(to: email, subject: subject)
|> assign(:locale, locale)
|> assign(:subject, subject)
|> assign(:activities, chunked_activities)
|> assign(:total_number_activities, length(activities))
|> assign(:single_activity, single_activity)
|> render(:email_direct_activity)
end
@spec chunk_activities(list()) :: map()
defp chunk_activities(activities) do
activities
|> Enum.reduce(%{}, fn %Activity{group: %Actor{id: group_id}} = activity, acc ->
Map.update(acc, group_id, [activity], fn activities -> activities ++ [activity] end)
end)
|> Enum.map(fn {key, value} ->
{key, Enum.sort(value, &(&1.inserted_at <= &2.inserted_at))}
end)
|> Enum.map(fn {key, value} -> {key, filter_duplicates(value)} end)
|> Enum.into(%{})
end
# We filter duplicates when subject_params are being the same
# so it will probably not catch much things
@spec filter_duplicates(list()) :: list()
defp filter_duplicates(activities) do
Enum.uniq_by(activities, fn %Activity{
author: %Actor{id: author_id},
group: %Actor{id: group_id},
type: type,
subject: subject,
subject_params: subject_params
} ->
%{
author_id: author_id,
group_id: group_id,
type: type,
subject: subject,
subject_params: subject_params
}
end)
end
end