app_store_connect_api_key action calling moved to a separate method, api_key_path used directly

xcode/commonFastfile

@@ -374,11 +374,8 @@ end
 def fill_up_options_using_configuration_type(options, configuration_type)
   configuration = get_configuration_for_type(configuration_type.type)
 
-  api_key_json_path = File.expand_path "../fastlane/#{configuration_type.prefix}_api_key.json"
-  is_api_key_file_exists = File.exists?(api_key_json_path)
-
-  api_key_path = nil
-  api_key = nil
+  api_key_path = File.expand_path "../fastlane/#{configuration_type.prefix}_api_key.json"
+  is_api_key_file_exists = File.exists?(api_key_path)
 
   # Check whether configuration type is required to configure one of api key parameters or not
 
@@ -389,40 +386,38 @@ def fill_up_options_using_configuration_type(options, configuration_type)
     if is_api_key_file_exists
 
       # If exists then fill in all required information through api_key_path parameter
+      # and set a value to an options` parameter respectively 
 
-      api_key_path = "fastlane/#{configuration_type.prefix}_api_key.json"
+      default_options = {:api_key_path => api_key_path}
     else
 
-      require 'json'
-
       # If doesn't exist then build api_key parameter through app_store_connect_api_key action
+      # and set a value to an options` parameter respectively also
 
-      api_key_parameters = JSON.parse(ENV['API_KEY_JSON'])
-
-      api_key = app_store_connect_api_key(
-        key_id: api_key_parameters['key_id'],
-        issuer_id: api_key_parameters['issuer_id'],
-        key_content: api_key_parameters['key'],
-        duration: api_key_parameters['duration'],
-        in_house: api_key_parameters['in_house']
-      )
+      default_options = {:api_key => get_app_store_connect_api_key()}
     end
   end
 
-  # Setting required parameter depending on API key JSON file existence
-
-  if is_api_key_file_exists
-    default_options = {:api_key_path => api_key_path}
-  else
-    default_options = {:api_key => api_key}
-  end
-
   default_options
     .merge(configuration.to_options)
     .merge(get_keychain_options(options))
     .merge(options)
 end
 
+def get_app_store_connect_api_key()
+  require 'json'
+
+  api_key_parameters = JSON.parse(ENV['API_KEY_JSON'])
+
+  return app_store_connect_api_key(
+    key_id: api_key_parameters['key_id'],
+    issuer_id: api_key_parameters['issuer_id'],
+    key_content: api_key_parameters['key'],
+    duration: api_key_parameters['duration'],
+    in_house: api_key_parameters['in_house']
+  )
+end
+
 def get_keychain_options(options)
   keychain_name = options[:keychain_name]
   keychain_password = options[:keychain_password]