refactor: move update_channel

app/controllers/microsoft/callbacks_controller.rb

@@ -5,14 +5,8 @@ class Microsoft::CallbacksController < OauthCallbackController
     'microsoft'
   end
 
-  def handle_response
-    inbox, already_exists = find_or_create_inbox
-
-    if already_exists
-      redirect_to app_email_inbox_settings_url(account_id: account.id, inbox_id: inbox.id)
-    else
-      redirect_to app_email_inbox_agents_url(account_id: account.id, inbox_id: inbox.id)
-    end
+  def imap_address
+    'outlook.office365.com'
   end
 
   def oauth_client
@@ -26,17 +20,4 @@ class Microsoft::CallbacksController < OauthCallbackController
                            token_url: 'https://login.microsoftonline.com/common/oauth2/v2.0/token'
                          })
   end
-
-  def update_channel(channel_email)
-    channel_email.update!({
-                            imap_login: users_data['email'], imap_address: 'outlook.office365.com',
-                            imap_port: '993', imap_enabled: true,
-                            provider: 'microsoft',
-                            provider_config: {
-                              access_token: parsed_body['access_token'],
-                              refresh_token: parsed_body['refresh_token'],
-                              expires_on: (Time.current.utc + 1.hour).to_s
-                            }
-                          })
-  end
 end