chore(smtp): add mailcatcher configuration

config/env.example

@@ -90,11 +90,17 @@ SENDINBLUE_BALANCING="disabled"
 SENDINBLUE_BALANCING_VALUE="50"
 
 # Alternate SMTP Provider: Mailtrap (mail catcher for staging environments)
-# When enabled, all emails will be sent using this provided
+# When enabled, all emails will be sent using this provider
 MAILTRAP_ENABLED="disabled"
 MAILTRAP_USERNAME=""
 MAILTRAP_PASSWORD=""
 
+# Alternative SMTP Provider: Mailcatcher (Catches mail and serves it through a dream.)
+# When enabled, all emails will be sent using this provider
+MAILCATCHER_ENABLED="disabled"
+MAILCATCHER_HOST=""
+MAILCATCHER_PORT=""
+
 # External service: live chat for admins (specific to démarches-simplifiées.fr)
 CRISP_ENABLED="disabled"
 CRISP_CLIENT_KEY=""

config/environments/production.rb

@@ -89,7 +89,8 @@ Rails.application.configure do
 
   elsif ENV['SENDINBLUE_ENABLED'] == 'enabled'
     config.action_mailer.delivery_method = :sendinblue
-
+  elsif ENV['MAILCATCHER_ENABLED'] == 'enabled'
+    config.action_mailer.delivery_method = :mailcatcher
   else
     config.action_mailer.delivery_method = :mailjet
   end

config/initializers/mailcatcher.rb

@@ -0,0 +1,13 @@
+if ENV.fetch('MAILCATCHER_ENABLED') == 'enabled'
+  ActiveSupport.on_load(:action_mailer) do
+    module Mailcatcher
+      class SMTP < ::Mail::SMTP; end
+    end
+
+    ActionMailer::Base.add_delivery_method :mailcatcher, Mailcatcher::SMTP
+    ActionMailer::Base.mailcatcher_settings = {
+      address: ENV.fetch("MAILCATCHER_HOST"),
+      port: ENV.fetch("MAILCATCHER_PORT")
+    }
+  end
+end