[#70113] Missing notification when restoring a cancelled occurrence

modules/meeting/app/controllers/recurring_meetings_controller.rb

@@ -57,12 +57,16 @@ def new
     @recurring_meeting = RecurringMeeting.new(project: @project)
   end
 
-  def init
+  def init # rubocop:disable Metrics/AbcSize
+    scheduled_meeting = @recurring_meeting.scheduled_meetings.find_by(start_time: params[:start_time])
+    is_restoration = scheduled_meeting&.cancelled?
+
     call = ::RecurringMeetings::InitOccurrenceService
       .new(user: current_user, recurring_meeting: @recurring_meeting)
       .call(start_time: DateTime.iso8601(params[:start_time]))
 
     if call.success?
+      send_restoration_notifications(call.result) if is_restoration
       redirect_to project_meeting_path(call.result.project, call.result), status: :see_other
     else
       flash[:error] = call.message
@@ -269,6 +273,22 @@ def deliver_invitation_mails
     end
   end
 
+  def send_restoration_notifications(meeting)
+    return unless meeting.notify?
+
+    meeting
+      .participants
+      .invited
+      .find_each do |participant|
+      MeetingMailer
+        .invited(
+          meeting,
+          participant.user,
+          User.current
+        ).deliver_later
+    end
+  end
+
   def upcoming_meetings(count:)
     opened = @recurring_meeting
       .upcoming_instantiated_meetings

modules/meeting/spec/features/recurring_meetings/recurring_meeting_crud_spec.rb

@@ -147,6 +147,28 @@
     show_page.expect_cancelled_meeting date: "01/07/2025 01:30 PM"
   end
 
+  it "sends an email notification when restoring a cancelled planned occurrence" do
+    meeting.template.update(notify: true)
+    show_page.visit!
+
+    show_page.cancel_occurrence date: "01/07/2025 01:30 PM"
+    show_page.within_modal "Cancel meeting occurrence" do
+      click_on "Cancel occurrence"
+    end
+
+    expect_flash(type: :success, message: "Successful cancellation.")
+    show_page.expect_cancelled_meeting date: "01/07/2025 01:30 PM"
+
+    show_page.restore date: "01/07/2025 01:30 PM"
+    wait_for_reload
+
+    ActionMailer::Base.deliveries.clear
+
+    perform_enqueued_jobs
+    expect(ActionMailer::Base.deliveries.size).to eq 1
+    expect(ActionMailer::Base.deliveries.last.subject).to eq("[#{project.name}] #{meeting.template.title}")
+  end
+
   it "can edit the details of a recurring meeting" do
     show_page.visit!
 
@@ -188,6 +210,28 @@
     show_page.expect_cancelled_actions date: "12/31/2024 01:30 PM"
   end
 
+  it "sends restoration notification when restoring a cancelled open occurrence" do
+    meeting.template.update(notify: true)
+    show_page.visit!
+
+    show_page.cancel_occurrence date: "12/31/2024 01:30 PM"
+    show_page.within_modal "Cancel meeting occurrence" do
+      click_on "Cancel occurrence"
+    end
+
+    expect_flash(type: :success, message: "Successful cancellation.")
+    show_page.expect_cancelled_meeting date: "12/31/2024 01:30 PM"
+
+    show_page.restore date: "12/31/2024 01:30 PM"
+    wait_for_reload
+
+    ActionMailer::Base.deliveries.clear
+
+    perform_enqueued_jobs
+    expect(ActionMailer::Base.deliveries.size).to eq 1
+    expect(ActionMailer::Base.deliveries.last.subject).to eq("[#{project.name}] #{meeting.template.title}")
+  end
+
   it "can edit the meeting series interval when created with working days (Regression #62089)" do
     meeting.update!(frequency: "working_days")
 

modules/meeting/spec/support/pages/recurring_meeting/show.rb

@@ -92,6 +92,13 @@ def open(date:)
       end
     end
 
+    def restore(date:)
+      within("li", text: date) do
+        click_on "more-button"
+        click_on "Restore this occurrence"
+      end
+    end
+
     def cancel_occurrence(date:)
       within("li", text: date) do
         click_on "more-button"