Add previews for NotifcationMailer

spec/mailers/previews/notification_mailer_preview.rb

@@ -0,0 +1,98 @@
+class NotificationMailerPreview < ActionMailer::Preview
+  def daily_summary
+    NotificationMailer.daily_summary(
+      user, [
+        notification('embargo_expiring'),
+        notification('expire_embargo'),
+        notification('overdue'),
+        notification('response'),
+        notification('very_overdue'),
+        batch_notification('embargo_expiring'),
+        batch_notification('expire_embargo'),
+        batch_notification('overdue'),
+        batch_notification('response'),
+        batch_notification('very_overdue')
+      ]
+    )
+  end
+
+  def response_notification
+    NotificationMailer.response_notification(notification)
+  end
+
+  def embargo_expiring_notification
+    NotificationMailer.embargo_expiring_notification(notification)
+  end
+
+  def expire_embargo_notification
+    NotificationMailer.expire_embargo_notification(notification)
+  end
+
+  def overdue_notification
+    NotificationMailer.overdue_notification(notification)
+  end
+
+  def very_overdue_notification
+    NotificationMailer.very_overdue_notification(notification)
+  end
+
+  private
+
+  def notification(type = 'response')
+    Notification.new(
+      user: user,
+      info_request_event: InfoRequestEvent.new(
+        event_type: type,
+        info_request: info_request,
+        incoming_message: incoming_message
+      )
+    )
+  end
+
+  def info_request
+    InfoRequest.new(
+      title: 'A request',
+      url_title: 'a_request',
+      user: User.first,
+      public_body: PublicBody.first,
+      described_state: 'successful'
+    )
+  end
+
+  def user
+    info_request.user
+  end
+
+  def incoming_message
+    IncomingMessage.new(
+      id: 123,
+      info_request: info_request,
+      raw_email: RawEmail.new,
+      last_parsed: Time.now,
+      sent_at: Time.now
+    )
+  end
+
+  def batch_notification(type = 'response')
+    Notification.new(
+      user: user,
+      info_request_event: InfoRequestEvent.new(
+        event_type: type,
+        info_request: batched_info_request,
+        incoming_message: incoming_message
+      )
+    )
+  end
+
+  def batched_info_request
+    info_request.tap do |info_request|
+      info_request.title = 'Batch request'
+      info_request.url_title = 'batched_request'
+      info_request.info_request_batch_id = 456
+      info_request.info_request_batch = InfoRequestBatch.new(
+        id: 456,
+        title: 'Batch request'
+      )
+    end
+  end
+end