feat: Facebook delivery reports (#8136)

lib/integrations/facebook/delivery_status.rb

@@ -1,32 +1,37 @@
 # frozen_string_literal: true
 
 class Integrations::Facebook::DeliveryStatus
-  def initialize(params)
-    @params = params
-  end
+  pattr_initialize [:params!]
 
   def perform
-    update_message_status
+    return if facebook_channel.blank?
+    return unless conversation
+
+    process_delivery_status if params.delivery_watermark
+    process_read_status if params.read_watermark
   end
 
   private
 
-  def sender_id
-    @params.sender['id']
+  def process_delivery_status
+    timestamp = Time.zone.at(params.delivery_watermark.to_i).to_datetime.utc
+    ::Conversations::UpdateMessageStatusJob.perform_later(conversation.id, timestamp, :delivered)
+  end
+
+  def process_read_status
+    timestamp = Time.zone.at(params.read_watermark.to_i).to_datetime.utc
+    ::Conversations::UpdateMessageStatusJob.perform_later(conversation.id, timestamp, :read)
   end
 
   def contact
-    ::ContactInbox.find_by(source_id: sender_id)&.contact
+    ::ContactInbox.find_by(source_id: params.sender_id)&.contact
   end
 
   def conversation
     @conversation ||= ::Conversation.find_by(contact_id: contact.id) if contact.present?
   end
 
-  def update_message_status
-    return unless conversation
-
-    conversation.contact_last_seen_at = @params.at
-    conversation.save!
+  def facebook_channel
+    @facebook_channel ||= Channel::FacebookPage.find_by(page_id: params.recipient_id)
   end
 end

lib/integrations/facebook/message_parser.rb

@@ -34,6 +34,22 @@ class Integrations::Facebook::MessageParser
     @messaging.dig('message', 'mid')
   end
 
+  def delivery
+    @messaging['delivery']
+  end
+
+  def read
+    @messaging['read']
+  end
+
+  def read_watermark
+    read&.dig('watermark')
+  end
+
+  def delivery_watermark
+    delivery&.dig('watermark')
+  end
+
   def echo?
     @messaging.dig('message', 'is_echo')
   end