feat: Add delivery reports for live chat (#8092)

app/controllers/api/v1/widget/conversations_controller.rb

@@ -28,6 +28,7 @@ class Api::V1::Widget::ConversationsController < Api::V1::Widget::BaseController
 
     conversation.contact_last_seen_at = DateTime.now.utc
     conversation.save!
+    ::Conversations::MarkMessagesAsReadJob.perform_later(conversation)
     head :ok
   end
 

app/javascript/dashboard/components/widgets/conversation/bubble/Actions.vue

@@ -214,6 +214,10 @@ export default {
       if (this.isAWhatsAppChannel || this.isATwilioChannel) {
         return this.sourceId && this.isDelivered;
       }
+      // We will consider messages as delivered for web widget inbox if they are sent
+      if (this.isAWebWidgetInbox) {
+        return this.isSent;
+      }
 
       return false;
     },

app/jobs/conversations/mark_messages_as_read_job.rb

@@ -0,0 +1,13 @@
+class Conversations::MarkMessagesAsReadJob < ApplicationJob
+  queue_as :low
+
+  def perform(conversation)
+    # Mark every message created before the user's viewing time as read.
+    conversation.messages.where(status: %w[sent delivered])
+                .where.not(message_type: 'incoming')
+                .where('created_at <= ?',
+                       conversation.contact_last_seen_at).find_each do |message|
+      message.update!(status: 'read')
+    end
+  end
+end