feat: migrate facebook env vars to globalConfig (#3369)

Migrate facebook env vars to globalConfig and make it editable from the super admin UI.

app/controllers/api/v1/accounts/callbacks_controller.rb

@@ -74,7 +74,7 @@ class Api::V1::Accounts::CallbacksController < Api::V1::Accounts::BaseController
   end
 
   def long_lived_token(omniauth_token)
-    koala = Koala::Facebook::OAuth.new(ENV['FB_APP_ID'], ENV['FB_APP_SECRET'])
+    koala = Koala::Facebook::OAuth.new(GlobalConfigService.load('FB_APP_ID', ''), GlobalConfigService.load('FB_APP_SECRET', ''))
     koala.exchange_access_token_info(omniauth_token)['access_token']
   rescue StandardError => e
     Rails.logger.info e

app/controllers/dashboard_controller.rb

@@ -26,14 +26,17 @@ class DashboardController < ActionController::Base
       'API_CHANNEL_THUMBNAIL',
       'ANALYTICS_TOKEN',
       'ANALYTICS_HOST'
-    ).merge(
-      APP_VERSION: Chatwoot.config[:version],
-      VAPID_PUBLIC_KEY: VapidService.public_key,
-      ENABLE_ACCOUNT_SIGNUP: GlobalConfigService.load('ENABLE_ACCOUNT_SIGNUP', 'false')
-    )
+    ).merge(app_config)
   end
 
   def ensure_installation_onboarding
     redirect_to '/installation/onboarding' if ::Redis::Alfred.get(::Redis::Alfred::CHATWOOT_INSTALLATION_ONBOARDING)
   end
+
+  def app_config
+    { APP_VERSION: Chatwoot.config[:version],
+      VAPID_PUBLIC_KEY: VapidService.public_key,
+      ENABLE_ACCOUNT_SIGNUP: GlobalConfigService.load('ENABLE_ACCOUNT_SIGNUP', 'false'),
+      FB_APP_ID: GlobalConfigService.load('FB_APP_ID', '') }
+  end
 end

app/controllers/webhooks/instagram_controller.rb

@@ -25,6 +25,6 @@ class Webhooks::InstagramController < ApplicationController
   private
 
   def valid_instagram_token?(token)
-    token == ENV['IG_VERIFY_TOKEN']
+    token == GlobalConfigService.load('IG_VERIFY_TOKEN', '')
   end
 end