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pow lib extensions email_confirmation phoenix controllers controller_callbacks.ex
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lib/extensions/email_confirmation/phoenix/controllers/controller_callbacks.ex

defmodule PowEmailConfirmation.Phoenix.ControllerCallbacks do
@moduledoc false
use Pow.Extension.Phoenix.ControllerCallbacks.Base
alias Plug.Conn
alias Pow.Plug
alias PowEmailConfirmation.Phoenix.{ConfirmationController, Mailer}
def before_process(Pow.Phoenix.RegistrationController, :update, conn, _config) do
user = Plug.current_user(conn)
Conn.put_private(conn, :pow_user_before_update, user)
end
def before_respond(Pow.Phoenix.SessionController, :create, {:ok, conn}, _config) do
conn
|> Plug.current_user()
|> halt_unconfirmed(conn, {:ok, conn})
end
def before_respond(Pow.Phoenix.RegistrationController, :create, {:ok, user, conn}, _config) do
halt_unconfirmed(user, conn, {:ok, user, conn})
end
def before_respond(Pow.Phoenix.RegistrationController, :update, {:ok, user, conn}, _config) do
case should_send_email?(user, conn.private[:pow_user_before_update]) do
true ->
send_confirmation_email(user, conn)
{:ok, user, conn}
false ->
{:ok, user, conn}
end
end
defp should_send_email?(%{unconfirmed_email: new_email}, %{unconfirmed_email: old_email}),
do: new_email != old_email
defp halt_unconfirmed(%{email_confirmed_at: nil, email_confirmation_token: token} = user, conn, _success_response) when not is_nil(token) do
send_confirmation_email(user, conn)
{:ok, conn} = Plug.clear_authenticated_user(conn)
error = ConfirmationController.messages(conn).email_confirmation_required(conn)
path = ConfirmationController.routes(conn).session_path(conn, :new)
conn =
conn
|> Phoenix.Controller.put_flash(:error, error)
|> Phoenix.Controller.redirect(to: path)
{:halt, conn}
end
defp halt_unconfirmed(_user, _conn, success_response), do: success_response
@spec send_confirmation_email(map(), Conn.t()) :: any()
def send_confirmation_email(user, conn) do
token = user.email_confirmation_token
url = ConfirmationController.routes(conn).url_for(conn, ConfirmationController, :show, [token])
email = Mailer.email_confirmation(conn, user, url)
Pow.Phoenix.Mailer.deliver(conn, email)
end
end