Bug: Fix Facebook v7.0 API issues (#863)

* Fix v7.0 API issues

Co-authored-by: Sojan <sojan@pepalo.com>

app/models/channel/facebook_page.rb

@@ -28,13 +28,26 @@ class Channel::FacebookPage < ApplicationRecord
 
   has_one :inbox, as: :channel, dependent: :destroy
 
+  after_create_commit :subscribe
   before_destroy :unsubscribe
 
-  private
+  def subscribe
+    # ref https://developers.facebook.com/docs/messenger-platform/reference/webhook-events
+    response = Facebook::Messenger::Subscriptions.subscribe(
+      access_token: page_access_token,
+      subscribed_fields: %w[
+        messages message_deliveries message_echoes message_reads
+      ]
+    )
+  rescue => e
+    Rails.logger.debug "Rescued: #{e.inspect}"
+    true
+  end
 
   def unsubscribe
     Facebook::Messenger::Subscriptions.unsubscribe(access_token: page_access_token)
   rescue => e
+    Rails.logger.debug "Rescued: #{e.inspect}"
     true
   end
 end

app/models/inbox.rb

@@ -41,7 +41,6 @@ class Inbox < ApplicationRecord
   has_one :agent_bot, through: :agent_bot_inbox
   has_many :webhooks, dependent: :destroy
 
-  after_create :subscribe_webhook, if: :facebook?
   after_destroy :delete_round_robin_agents
 
   def add_member(user_id)
@@ -83,16 +82,4 @@ class Inbox < ApplicationRecord
   def round_robin_key
     format(Constants::RedisKeys::ROUND_ROBIN_AGENTS, inbox_id: id)
   end
-
-  def subscribe_webhook
-    Facebook::Messenger::Subscriptions.subscribe(
-      access_token: channel.page_access_token,
-      subscribed_fields: %w[
-        messages messaging_postbacks messaging_optins message_deliveries
-        message_reads messaging_payments messaging_pre_checkouts messaging_checkout_updates
-        messaging_account_linking messaging_referrals message_echoes messaging_game_plays
-        standby messaging_handovers messaging_policy_enforcement message_reactions
-      ]
-    )
-  end
 end