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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2019 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.Repo
  13   alias Pleroma.Workers.MailerWorker
  14   alias Swoosh.DeliveryError
  15
  16   @otp_app :pleroma
  17   @mailer_config [otp: :pleroma]
  18
  19   @spec enabled?() :: boolean()
  20   def enabled?, do: Pleroma.Config.get([__MODULE__, :enabled])
  21
  22   import Pleroma.Workers.WorkerHelper, only: [worker_args: 1]
  23
  24   @doc "add email to queue"
  25   def deliver_async(email, config \\ []) do
  26     encoded_email =
  27       email
  28       |> :erlang.term_to_binary()
  29       |> Base.encode64()
  30
  31     %{"op" => "email", "encoded_email" => encoded_email, "config" => config}
  32     |> MailerWorker.new(worker_args(:mailer))
  33     |> Repo.insert()
  34   end
  35
  36   @doc "callback to perform send email from queue"
  37   def perform(:deliver_async, email, config), do: deliver(email, config)
  38
  39   @spec deliver(Swoosh.Email.t(), Keyword.t()) :: {:ok, term} | {:error, term}
  40   def deliver(email, config \\ [])
  41
  42   def deliver(email, config) do
  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