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, acc -> case activity do %Activity{group: %Actor{id: group_id}} -> Map.update(acc, group_id, [activity], fn activities -> activities ++ [activity] end) # Not a group activity %Activity{} -> Map.update(acc, nil, [activity], fn activities -> activities ++ [activity] end) 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 -> case activity do %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 } %Activity{ type: type, subject: subject, subject_params: subject_params } -> %{ type: type, subject: subject, subject_params: subject_params } end end) end end