Restructure omni services and add Chatwoot research snapshot

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

@@ -0,0 +1,116 @@
+class Api::V1::Accounts::CallbacksController < Api::V1::Accounts::BaseController
+  before_action :inbox, only: [:reauthorize_page]
+
+  def register_facebook_page
+    user_access_token = params[:user_access_token]
+    page_access_token = params[:page_access_token]
+    page_id = params[:page_id]
+    inbox_name = params[:inbox_name]
+    ActiveRecord::Base.transaction do
+      facebook_channel = Current.account.facebook_pages.create!(
+        page_id: page_id, user_access_token: user_access_token,
+        page_access_token: page_access_token
+      )
+      @facebook_inbox = Current.account.inboxes.create!(name: inbox_name, channel: facebook_channel)
+      set_instagram_id(page_access_token, facebook_channel)
+      set_avatar(@facebook_inbox, page_id)
+    end
+  rescue StandardError => e
+    ChatwootExceptionTracker.new(e).capture_exception
+    Rails.logger.error "Error in register_facebook_page: #{e.message}"
+    # Additional log statements
+    log_additional_info
+  end
+
+  def log_additional_info
+    Rails.logger.debug do
+      "user_access_token: #{params[:user_access_token]} , page_access_token: #{params[:page_access_token]} ,
+      page_id: #{params[:page_id]}, inbox_name: #{params[:inbox_name]}"
+    end
+  end
+
+  def facebook_pages
+    pages = []
+    fb_pages = fb_object.get_connections('me', 'accounts')
+    pages.concat(fb_pages)
+    while fb_pages.respond_to?(:next_page) && (next_page = fb_pages.next_page)
+      fb_pages = next_page
+      pages.concat(fb_pages)
+    end
+    @page_details = mark_already_existing_facebook_pages(pages)
+  end
+
+  def set_instagram_id(page_access_token, facebook_channel)
+    fb_object = Koala::Facebook::API.new(page_access_token)
+    response = fb_object.get_connections('me', '', { fields: 'instagram_business_account' })
+    return if response['instagram_business_account'].blank?
+
+    instagram_id = response['instagram_business_account']['id']
+    facebook_channel.update(instagram_id: instagram_id)
+  rescue StandardError => e
+    Rails.logger.error "Error in set_instagram_id: #{e.message}"
+  end
+
+  # get params[:inbox_id], current_account. params[:omniauth_token]
+  def reauthorize_page
+    if @inbox&.facebook?
+      fb_page_id = @inbox.channel.page_id
+      page_details = fb_object.get_connections('me', 'accounts')
+
+      if (page_detail = (page_details || []).detect { |page| fb_page_id == page['id'] })
+        update_fb_page(fb_page_id, page_detail['access_token'])
+        render and return
+      end
+    end
+
+    head :unprocessable_entity
+  end
+
+  private
+
+  def inbox
+    @inbox = Current.account.inboxes.find_by(id: params[:inbox_id])
+  end
+
+  def update_fb_page(fb_page_id, access_token)
+    fb_page = get_fb_page(fb_page_id)
+    ActiveRecord::Base.transaction do
+      fb_page&.update!(user_access_token: @user_access_token, page_access_token: access_token)
+      set_instagram_id(access_token, fb_page)
+      fb_page&.reauthorized!
+    rescue StandardError => e
+      ChatwootExceptionTracker.new(e).capture_exception
+      Rails.logger.error "Error in update_fb_page: #{e.message}"
+    end
+  end
+
+  def get_fb_page(fb_page_id)
+    Current.account.facebook_pages.find_by(page_id: fb_page_id)
+  end
+
+  def fb_object
+    @user_access_token = long_lived_token(params[:omniauth_token])
+    Koala::Facebook::API.new(@user_access_token)
+  end
+
+  def long_lived_token(omniauth_token)
+    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.error "Error in long_lived_token: #{e.message}"
+  end
+
+  def mark_already_existing_facebook_pages(data)
+    return [] if data.empty?
+
+    data.inject([]) do |result, page_detail|
+      page_detail[:exists] = Current.account.facebook_pages.exists?(page_id: page_detail['id'])
+      result << page_detail
+    end
+  end
+
+  def set_avatar(facebook_inbox, page_id)
+    avatar_url = "https://graph.facebook.com/#{page_id}/picture?type=large"
+    Avatar::AvatarFromUrlJob.perform_later(facebook_inbox, avatar_url)
+  end
+end