Use user timezone in emails

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/mobilizon/events/events.ex

@@ -30,7 +30,7 @@ defmodule Mobilizon.Events do
   alias Mobilizon.Service.Workers
   alias Mobilizon.Share
   alias Mobilizon.Storage.{Page, Repo}
-  alias Mobilizon.Users.User
+  alias Mobilizon.Users.{Setting, User}
 
   alias Mobilizon.Web.Email
 
@@ -1587,16 +1587,22 @@ defmodule Mobilizon.Events do
     )
   end
 
+  @doc """
+  List emails for local users (including anonymous ones) participating to an event
+
+  Returns {participation, actor, user, user_settings}
+  """
   @spec list_local_emails_user_participants_for_event_query(String.t()) :: Ecto.Query.t()
   def list_local_emails_user_participants_for_event_query(event_id) 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)
+    |> join(:left, [_p, _a, u], s in Setting, on: s.user_id == u.id)
     |> where(
       [p],
       p.event_id == ^event_id and p.role not in [^:not_approved, ^:not_confirmed, ^:rejected]
     )
-    |> select([p, a, u], {p, a, u})
+    |> select([p, a, u, s], {p, a, u, s})
   end
 
   @spec list_participations_for_user_query(integer()) :: Ecto.Query.t()

lib/web/email/event.ex

@@ -13,7 +13,7 @@ defmodule Mobilizon.Web.Email.Event do
   alias Mobilizon.Events
   alias Mobilizon.Events.{Event, Participant}
   alias Mobilizon.Storage.Repo
-  alias Mobilizon.Users.User
+  alias Mobilizon.Users.{Setting, User}
 
   alias Mobilizon.Web.Email
   alias Mobilizon.Web.Gettext, as: GettextBackend
@@ -28,6 +28,7 @@ defmodule Mobilizon.Web.Email.Event do
         %Event{} = old_event,
         %Event{} = event,
         changes,
+        timezone \\ "Etc/UTC",
         locale \\ "en"
       ) do
     GettextBackend.put_locale(locale)
@@ -44,6 +45,7 @@ defmodule Mobilizon.Web.Email.Event do
     |> assign(:old_event, old_event)
     |> assign(:changes, changes)
     |> assign(:subject, subject)
+    |> assign(:timezone, timezone)
     |> render(:event_updated)
   end
 
@@ -75,18 +77,42 @@ defmodule Mobilizon.Web.Email.Event do
 
   defp send_notification_for_event_update_to_participant(
          {%Participant{} = _participant, %Actor{} = actor,
-          %User{locale: locale, email: email} = _user},
+          %User{locale: locale, email: email} = _user, %Setting{timezone: timezone}},
          %Event{} = old_event,
          %Event{} = event,
          diff
        ) do
-    email
-    |> Email.Event.event_updated(actor, old_event, event, diff, locale)
-    |> Email.Mailer.deliver_later()
+    do_send_notification_for_event_update_to_participant(
+      email,
+      actor,
+      old_event,
+      event,
+      diff,
+      timezone,
+      locale
+    )
   end
 
   defp send_notification_for_event_update_to_participant(
-         {%Participant{metadata: %{email: email}} = _participant, %Actor{} = actor, nil},
+         {%Participant{} = _participant, %Actor{} = actor,
+          %User{locale: locale, email: email} = _user, nil},
+         %Event{} = old_event,
+         %Event{} = event,
+         diff
+       ) do
+    do_send_notification_for_event_update_to_participant(
+      email,
+      actor,
+      old_event,
+      event,
+      diff,
+      "Etc/UTC",
+      locale
+    )
+  end
+
+  defp send_notification_for_event_update_to_participant(
+         {%Participant{metadata: %{email: email}} = _participant, %Actor{} = actor, nil, nil},
          %Event{} = old_event,
          %Event{} = event,
          diff
@@ -94,8 +120,28 @@ defmodule Mobilizon.Web.Email.Event do
        when not is_nil(email) do
     locale = Gettext.get_locale()
 
+    do_send_notification_for_event_update_to_participant(
+      email,
+      actor,
+      old_event,
+      event,
+      diff,
+      "Etc/UTC",
+      locale
+    )
+  end
+
+  defp do_send_notification_for_event_update_to_participant(
+         email,
+         actor,
+         old_event,
+         event,
+         diff,
+         timezone,
+         locale
+       ) do
     email
-    |> Email.Event.event_updated(actor, old_event, event, diff, locale)
+    |> Email.Event.event_updated(actor, old_event, event, diff, timezone, locale)
     |> Email.Mailer.deliver_later()
   end
 end

lib/web/templates/email/event_updated.html.eex

@@ -74,7 +74,7 @@
                   <%= gettext "Start" %>
                 </td>
                 <td bgcolor="#ffffff" align="left">
-                  <b><%= datetime_to_string(@event.begins_on, @locale) %></b>
+                  <b><%= @event.begins_on |> datetime_tz_convert(@timezone) |> datetime_to_string(@locale) %></b>
                 </td>
               </tr>
             <% end %>
@@ -84,7 +84,7 @@
                   <%= gettext "End" %>
                 </td>
                 <td bgcolor="#ffffff" align="left">
-                  <b><%= datetime_to_string(@event.ends_on, @locale) %></b>
+                  <b><%= @event.ends_on |> datetime_tz_convert(@timezone) |> datetime_to_string(@locale) %></b>
                 </td>
               </tr>
             <% end %>

lib/web/templates/email/event_updated.text.eex

@@ -15,10 +15,10 @@
   <%= gettext "New title: %{title}", title: @event.title %>
 <% end %>
 <%= if MapSet.member?(@changes, :begins_on) do %>
-  <%= gettext "Start %{begins_on}", begins_on: datetime_to_string(@event.begins_on, @locale) %>
+  <%= gettext "Start %{begins_on}", begins_on: @event.begins_on |> datetime_tz_convert(@timezone) |> datetime_to_string(@locale) %>
 <% end %>
 <%= if MapSet.member?(@changes, :ends_on) && !is_nil(@event.ends_on) do %>
-  <%= gettext "End %{ends_on}", ends_on: datetime_to_string(@event.ends_on, @locale) %>
+  <%= gettext "End %{ends_on}", ends_on: @event.ends_on |> datetime_tz_convert(@timezone) |> datetime_to_string(@locale) %>
 <% end %>
 <%= gettext "Visit the updated event page: %{link}", link: page_url(Mobilizon.Web.Endpoint, :event, @event.uuid) %>
 <%= ngettext "Would you wish to cancel your attendance, visit the event page through the link above and click the « Attending » button.", "Would you wish to cancel your attendance to one or several events, visit the event pages through the links above and click the « Attending » button.", 1 %>

lib/web/templates/email/notification_each_week.html.eex

@@ -46,7 +46,7 @@
               <%= for participation <- @participations do %>
                 <li>
                   <strong>
-                    <%= participation.event.begins_on |> DateTime.shift_zone!(@timezone) |> datetime_to_string(@locale) %>
+                    <%= participation.event.begins_on |> datetime_tz_convert(@timezone) |> datetime_to_string(@locale) %>
                   </strong>
                   <a href="<%= page_url(Mobilizon.Web.Endpoint, :event, participation.event.uuid) %>" target="_blank">
                     <%= participation.event.title %>
@@ -56,7 +56,7 @@
             </ul>
           <% else %>
             <strong>
-              <%= @participation.event.begins_on |> DateTime.shift_zone!(@timezone) |> datetime_to_string(@locale) %>
+              <%= @participation.event.begins_on |> datetime_tz_convert(@timezone) |> datetime_to_string(@locale) %>
             </strong>
             <a href="<%= page_url(Mobilizon.Web.Endpoint, :event, @participation.event.uuid) %>" target="_blank">
               <%= @participation.event.title %>

lib/web/templates/email/notification_each_week.text.eex

@@ -1,14 +1,11 @@
 <%= gettext "What's up this week?" %>
 ==
-
 <%= ngettext "You have one event this week:", "You have %{total} events this week:", @total, total: @total %>
-
 <%= if @total > 1 do %>
   <%= for participation <- @participations do %>
-  - <%= participation.event.begins_on |> DateTime.shift_zone!(@timezone) |> datetime_to_string(@locale) %> - <%= participation.event.title %> <%= page_url(Mobilizon.Web.Endpoint, :event, participation.event.uuid) %>
+    - <%= participation.event.begins_on |> datetime_tz_convert(@timezone) |> datetime_to_string(@locale) %> - <%= participation.event.title %> <%= page_url(Mobilizon.Web.Endpoint, :event, participation.event.uuid) %>
   <% end %>
 <% else %>
-  <%= DateTime.shift_zone!(@participation.event.begins_on, @timezone) |> datetime_to_string(@locale) %> - <%= @participation.event.title %> <%= page_url(Mobilizon.Web.Endpoint, :event, @participation.event.uuid) %>
+  <%= @participation.event.begins_on |> datetime_tz_convert(@timezone) |> datetime_to_string(@locale) %> - <%= @participation.event.title %> <%= page_url(Mobilizon.Web.Endpoint, :event, @participation.event.uuid) %>
 <% end %>
-
 <%= ngettext "Would you wish to cancel your attendance, visit the event page through the link above and click the « Attending » button.", "Would you wish to cancel your attendance to one or several events, visit the event pages through the links above and click the « Attending » button.", @total %>

lib/web/views/email_view.ex

@@ -16,4 +16,15 @@ defmodule Mobilizon.Web.EmailView do
       string
     end
   end
+
+  @spec datetime_tz_convert(DateTime.t(), String.t()) :: DateTime.t()
+  def datetime_tz_convert(%DateTime{} = datetime, timezone) do
+    case DateTime.shift_zone(datetime, timezone) do
+      {:ok, datetime_with_user_tz} ->
+        datetime_with_user_tz
+
+      _ ->
+        datetime
+    end
+  end
 end