From f4b777c3d652fccd077d815822f8d6ed6501b66d Mon Sep 17 00:00:00 2001
From: Thomas Citharel <tcit@tcit.fr>
Date: Thu, 8 Oct 2020 08:53:25 +0200
Subject: [PATCH] Make sure event update notification email gets sent to
 anonymous participants

Signed-off-by: Thomas Citharel <tcit@tcit.fr>
---
 lib/mobilizon/events/events.ex        |  7 ++++--
 lib/web/email/event.ex                | 32 ++++++++++++++++++++-------
 test/graphql/resolvers/event_test.exs |  4 ++--
 3 files changed, 31 insertions(+), 12 deletions(-)

diff --git a/lib/mobilizon/events/events.ex b/lib/mobilizon/events/events.ex
index 1975f85a..9810acfa 100644
--- a/lib/mobilizon/events/events.ex
+++ b/lib/mobilizon/events/events.ex
@@ -1572,8 +1572,11 @@ defmodule Mobilizon.Events do
     Participant
     |> join(:inner, [p], a in Actor, on: p.actor_id == a.id and is_nil(a.domain))
     |> join(:left, [_p, a], u in User, on: a.user_id == u.id)
-    |> where([p], p.event_id == ^event_id)
-    |> select([_p, a, u], {a, u})
+    |> where(
+      [p],
+      p.event_id == ^event_id and p.role not in [^:not_approved, ^:not_confirmed, ^:rejected]
+    )
+    |> select([p, a, u], {p, a, u})
   end
 
   @spec list_participations_for_user_query(integer()) :: Ecto.Query.t()
diff --git a/lib/web/email/event.ex b/lib/web/email/event.ex
index 32336bf6..b4cd2e0e 100644
--- a/lib/web/email/event.ex
+++ b/lib/web/email/event.ex
@@ -11,25 +11,26 @@ defmodule Mobilizon.Web.Email.Event do
 
   alias Mobilizon.Actors.Actor
   alias Mobilizon.Events
-  alias Mobilizon.Events.Event
+  alias Mobilizon.Events.{Event, Participant}
   alias Mobilizon.Storage.Repo
   alias Mobilizon.Users.User
 
-  alias Mobilizon.Web.{Email, Gettext}
+  alias Mobilizon.Web.Email
+  alias Mobilizon.Web.Gettext, as: GettextBackend
 
   @important_changes [:title, :begins_on, :ends_on, :status, :physical_address]
 
-  @spec event_updated(User.t(), Actor.t(), Event.t(), Event.t(), MapSet.t(), String.t()) ::
+  @spec event_updated(String.t(), Actor.t(), Event.t(), Event.t(), MapSet.t(), String.t()) ::
           Bamboo.Email.t()
   def event_updated(
-        %User{} = user,
+        email,
         %Actor{} = actor,
         %Event{} = old_event,
         %Event{} = event,
         changes,
         locale \\ "en"
       ) do
-    Gettext.put_locale(locale)
+    GettextBackend.put_locale(locale)
 
     subject =
       gettext(
@@ -37,7 +38,7 @@ defmodule Mobilizon.Web.Email.Event do
         title: old_event.title
       )
 
-    Email.base_email(to: {Actor.display_name(actor), user.email}, subject: subject)
+    Email.base_email(to: {Actor.display_name(actor), email}, subject: subject)
     |> assign(:locale, locale)
     |> assign(:event, event)
     |> assign(:old_event, old_event)
@@ -73,12 +74,27 @@ defmodule Mobilizon.Web.Email.Event do
   end
 
   defp send_notification_for_event_update_to_participant(
-         {%Actor{} = actor, %User{locale: locale} = user},
+         {%Participant{} = _participant, %Actor{} = actor,
+          %User{locale: locale, email: email} = _user},
          %Event{} = old_event,
          %Event{} = event,
          diff
        ) do
-    user
+    email
+    |> Email.Event.event_updated(actor, old_event, event, diff, locale)
+    |> Email.Mailer.deliver_later()
+  end
+
+  defp send_notification_for_event_update_to_participant(
+         {%Participant{metadata: %{email: email}} = _participant, %Actor{} = actor, nil},
+         %Event{} = old_event,
+         %Event{} = event,
+         diff
+       )
+       when not is_nil(email) do
+    locale = Gettext.get_locale()
+
+    email
     |> Email.Event.event_updated(actor, old_event, event, diff, locale)
     |> Email.Mailer.deliver_later()
   end
diff --git a/test/graphql/resolvers/event_test.exs b/test/graphql/resolvers/event_test.exs
index 70e04cc7..d7299de1 100644
--- a/test/graphql/resolvers/event_test.exs
+++ b/test/graphql/resolvers/event_test.exs
@@ -837,7 +837,7 @@ defmodule Mobilizon.Web.Resolvers.EventTest do
 
       assert_delivered_email(
         Email.Event.event_updated(
-          user,
+          user.email,
           actor,
           event,
           new_event,
@@ -847,7 +847,7 @@ defmodule Mobilizon.Web.Resolvers.EventTest do
 
       assert_delivered_email(
         Email.Event.event_updated(
-          participant_user,
+          participant_user.email,
           participant_actor,
           event,
           new_event,