implemented bamboo mailer, satisfying tests

lib/bones73k/accounts/user_notifier.ex

@@ -1,21 +1,13 @@
 defmodule Bones73k.Accounts.UserNotifier do
-  # For simplicity, this module simply logs messages to the terminal.
-  # You should replace it by a proper email or notification tool, such as:
-  #
-  #   * Swoosh - https://hexdocs.pm/swoosh
-  #   * Bamboo - https://hexdocs.pm/bamboo
-  #
-  defp deliver(to, body) do
-    require Logger
-    Logger.debug(body)
-    {:ok, %{to: to, body: body}}
-  end
+  alias Bones73k.Mailer
+  alias Bones73k.Mailer.UserEmail
 
   @doc """
   Deliver instructions to confirm account.
   """
   def deliver_confirmation_instructions(user, url) do
-    deliver(user.email, """
+    user
+    |> UserEmail.compose("Confirm Your Account", """
 
     ==============================
 
@@ -29,13 +21,15 @@ defmodule Bones73k.Accounts.UserNotifier do
 
     ==============================
     """)
+    |> Mailer.deliver_later()
   end
 
   @doc """
   Deliver instructions to reset a user password.
   """
   def deliver_reset_password_instructions(user, url) do
-    deliver(user.email, """
+    user
+    |> UserEmail.compose("Reset Your Password", """
 
     ==============================
 
@@ -49,13 +43,15 @@ defmodule Bones73k.Accounts.UserNotifier do
 
     ==============================
     """)
+    |> Mailer.deliver_later()
   end
 
   @doc """
   Deliver instructions to update a user email.
   """
   def deliver_update_email_instructions(user, url) do
-    deliver(user.email, """
+    user
+    |> UserEmail.compose("Change Your E-mail", """
 
     ==============================
 
@@ -69,5 +65,6 @@ defmodule Bones73k.Accounts.UserNotifier do
 
     ==============================
     """)
+    |> Mailer.deliver_later()
   end
 end

lib/bones73k/mailer.ex

@@ -0,0 +1,3 @@
+defmodule Bones73k.Mailer do
+  use Bamboo.Mailer, otp_app: :bones73k
+end

lib/bones73k/mailer/user_email.ex

@@ -0,0 +1,17 @@
+defmodule Bones73k.Mailer.UserEmail do
+  import Bamboo.Email
+
+  @mailer_vars Application.get_env(:bones73k, :app_global_vars,
+                 mailer_reply_to: "admin@example.com",
+                 mailer_from: {"Bones73k", "bones73k@example.com"}
+               )
+
+  def compose(user, subject, body_text) do
+    new_email()
+    |> from(@mailer_vars[:mailer_from])
+    |> to(user.email)
+    |> put_header("Reply-To", @mailer_vars[:mailer_reply_to])
+    |> subject(subject)
+    |> text_body(body_text)
+  end
+end

lib/bones73k_web/controllers/user_registration_controller.ex

@@ -13,7 +13,7 @@ defmodule Bones73kWeb.UserRegistrationController do
   def create(conn, %{"user" => user_params}) do
     case Accounts.register_user(user_params) do
       {:ok, user} ->
-        {:ok, _} =
+        %Bamboo.Email{} =
           Accounts.deliver_user_confirmation_instructions(
             user,
             &Routes.user_confirmation_url(conn, :confirm, &1)