Separate Web modules related to Federation

lib/mobilizon_web/email/checker.ex

@@ -0,0 +1,14 @@
+defmodule MobilizonWeb.Email.Checker do
+  @moduledoc """
+  Provides a function to test emails against a "not so bad" regex.
+  """
+
+  # TODO: simplify me!
+  @email_regex ~r/^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
+
+  @doc """
+  Returns whether the email is valid.
+  """
+  @spec valid?(String.t()) :: boolean
+  def valid?(email), do: email =~ @email_regex
+end

lib/mobilizon_web/email/event.ex

@@ -9,11 +9,16 @@ defmodule MobilizonWeb.Email.Event do
 
   import MobilizonWeb.Gettext
 
-  alias Mobilizon.Events.Event
   alias Mobilizon.Actors.Actor
+  alias Mobilizon.Events
+  alias Mobilizon.Events.Event
+  alias Mobilizon.Storage.Repo
   alias Mobilizon.Users.User
+
   alias MobilizonWeb.Email
 
+  @important_changes [:title, :begins_on, :ends_on, :status]
+
   @spec event_updated(User.t(), Actor.t(), Event.t(), Event.t(), list(), String.t()) ::
           Bamboo.Email.t()
   def event_updated(
@@ -40,4 +45,41 @@ defmodule MobilizonWeb.Email.Event do
     |> assign(:subject, subject)
     |> render(:event_updated)
   end
+
+  def calculate_event_diff_and_send_notifications(
+        %Event{} = old_event,
+        %Event{id: event_id} = event,
+        changes
+      ) do
+    important = MapSet.new(@important_changes)
+
+    diff =
+      changes
+      |> Map.keys()
+      |> MapSet.new()
+      |> MapSet.intersection(important)
+
+    if MapSet.size(diff) > 0 do
+      Repo.transaction(fn ->
+        event_id
+        |> Events.list_local_emails_user_participants_for_event_query()
+        |> Repo.stream()
+        |> Enum.to_list()
+        |> Enum.each(
+          &send_notification_for_event_update_to_participant(&1, old_event, event, diff)
+        )
+      end)
+    end
+  end
+
+  defp send_notification_for_event_update_to_participant(
+         {%Actor{} = actor, %User{locale: locale} = user},
+         %Event{} = old_event,
+         %Event{} = event,
+         diff
+       ) do
+    user
+    |> Email.Event.event_updated(actor, old_event, event, diff, locale)
+    |> Email.Mailer.deliver_later()
+  end
 end

lib/mobilizon_web/email/user.ex

@@ -9,11 +9,14 @@ defmodule MobilizonWeb.Email.User do
 
   import MobilizonWeb.Gettext
 
-  alias Mobilizon.Config
+  alias Mobilizon.{Config, Crypto, Users}
+  alias Mobilizon.Storage.Repo
   alias Mobilizon.Users.User
 
   alias MobilizonWeb.Email
 
+  require Logger
+
   @spec confirmation_email(User.t(), String.t()) :: Bamboo.Email.t()
   def confirmation_email(
         %User{email: email, confirmation_token: confirmation_token},
@@ -53,4 +56,108 @@ defmodule MobilizonWeb.Email.User do
     |> assign(:subject, subject)
     |> render(:password_reset)
   end
+
+  def check_confirmation_token(token) when is_binary(token) do
+    with %User{} = user <- Users.get_user_by_activation_token(token),
+         {:ok, %User{} = user} <-
+           Users.update_user(user, %{
+             "confirmed_at" => DateTime.utc_now() |> DateTime.truncate(:second),
+             "confirmation_sent_at" => nil,
+             "confirmation_token" => nil
+           }) do
+      Logger.info("User #{user.email} has been confirmed")
+      {:ok, user}
+    else
+      _err ->
+        {:error, :invalid_token}
+    end
+  end
+
+  def resend_confirmation_email(%User{} = user, locale \\ "en") do
+    with :ok <- we_can_send_email(user, :confirmation_sent_at),
+         {:ok, user} <-
+           Users.update_user(user, %{
+             "confirmation_sent_at" => DateTime.utc_now() |> DateTime.truncate(:second)
+           }) do
+      send_confirmation_email(user, locale)
+      Logger.info("Sent confirmation email again to #{user.email}")
+      {:ok, user.email}
+    end
+  end
+
+  def send_confirmation_email(%User{} = user, locale \\ "en") do
+    user
+    |> Email.User.confirmation_email(locale)
+    |> Email.Mailer.deliver_later()
+  end
+
+  @doc """
+  Check that the provided token is correct and update provided password
+  """
+  @spec check_reset_password_token(String.t(), String.t()) :: tuple
+  def check_reset_password_token(password, token) do
+    with %User{} = user <- Users.get_user_by_reset_password_token(token),
+         {:ok, %User{} = user} <-
+           Repo.update(
+             User.password_reset_changeset(user, %{
+               "password" => password,
+               "reset_password_sent_at" => nil,
+               "reset_password_token" => nil
+             })
+           ) do
+      {:ok, user}
+    else
+      {:error, %Ecto.Changeset{errors: [password: {"registration.error.password_too_short", _}]}} ->
+        {:error,
+         "The password you have choosen is too short. Please make sure your password contains at least 6 charaters."}
+
+      _err ->
+        {:error,
+         "The token you provided is invalid. Make sure that the URL is exactly the one provided inside the email you got."}
+    end
+  end
+
+  @doc """
+  Send the email reset password, if it's not too soon since the last send
+  """
+  @spec send_password_reset_email(User.t(), String.t()) :: tuple
+  def send_password_reset_email(%User{} = user, locale \\ "en") do
+    with :ok <- we_can_send_email(user, :reset_password_sent_at),
+         {:ok, %User{} = user_updated} <-
+           Repo.update(
+             User.send_password_reset_changeset(user, %{
+               "reset_password_token" => Crypto.random_string(30),
+               "reset_password_sent_at" => DateTime.utc_now() |> DateTime.truncate(:second)
+             })
+           ) do
+      mail =
+        user_updated
+        |> Email.User.reset_password_email(locale)
+        |> Email.Mailer.deliver_later()
+
+      {:ok, mail}
+    else
+      {:error, reason} -> {:error, reason}
+    end
+  end
+
+  @spec we_can_send_email(User.t(), atom) :: :ok | {:error, :email_too_soon}
+  defp we_can_send_email(%User{} = user, key) do
+    case Map.get(user, key) do
+      nil ->
+        :ok
+
+      _ ->
+        case Timex.before?(
+              Timex.shift(Map.get(user, key), hours: 1),
+              DateTime.utc_now() |> DateTime.truncate(:second)
+            ) do
+          true ->
+            :ok
+
+          false ->
+            {:error, :email_too_soon}
+        end
+    end
+  end
 end