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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Emails.Mailer do
   6   @moduledoc """
   7   Defines the Pleroma mailer.
   8
   9   The module contains functions to delivery email using Swoosh.Mailer.
  10   """
  11
  12   alias Pleroma.Workers.MailerWorker
  13   alias Swoosh.DeliveryError
  14
  15   @otp_app :pleroma
  16   @mailer_config [otp: :pleroma]
  17
  18   @spec enabled?() :: boolean()
  19   def enabled?, do: Pleroma.Config.get([__MODULE__, :enabled])
  20
  21   @doc "add email to queue"
  22   def deliver_async(email, config \\ []) do
  23     encoded_email =
  24       email
  25       |> :erlang.term_to_binary()
  26       |> Base.encode64()
  27
  28     MailerWorker.enqueue("email", %{"encoded_email" => encoded_email, "config" => config})
  29   end
  30
  31   @doc "callback to perform send email from queue"
  32   def perform(:deliver_async, email, config), do: deliver(email, config)
  33
  34   @spec deliver(Swoosh.Email.t(), Keyword.t()) :: {:ok, term} | {:error, term}
  35   def deliver(email, config \\ [])
  36
  37   def deliver(email, config) do
  38     # temporary hackney fix until hackney max_connections bug is fixed
  39     # https://git.pleroma.social/pleroma/pleroma/-/issues/2101
  40     email =
  41       Swoosh.Email.put_private(email, :hackney_options, ssl_options: [versions: [:"tlsv1.2"]])
  42
  43     case enabled?() do
  44       true -> Swoosh.Mailer.deliver(email, parse_config(config))
  45       false -> {:error, :deliveries_disabled}
  46     end
  47   end
  48
  49   @spec deliver!(Swoosh.Email.t(), Keyword.t()) :: term | no_return
  50   def deliver!(email, config \\ [])
  51
  52   def deliver!(email, config) do
  53     case deliver(email, config) do
  54       {:ok, result} -> result
  55       {:error, reason} -> raise DeliveryError, reason: reason
  56     end
  57   end
  58
  59   @on_load :validate_dependency
  60
  61   @doc false
  62   def validate_dependency do
  63     parse_config([])
  64     |> Keyword.get(:adapter)
  65     |> Swoosh.Mailer.validate_dependency()
  66   end
  67
  68   defp parse_config(config) do
  69     Swoosh.Mailer.parse_config(@otp_app, __MODULE__, @mailer_config, config)
  70   end
  71 end