class Google::Auth::UserRefreshCredentials

def self.make_creds options = {} # rubocop:disable Metrics/MethodLength
  json_key_io, scope = options.values_at :json_key_io, :scope
  user_creds = if json_key_io
                 json_key = JSON.parse json_key_io.read
                 if json_key.key? "type"
                   json_key_io.rewind
                 else # Defaults to class credential 'type' if missing.
                   json_key["type"] = CREDENTIAL_TYPE_NAME
                   json_key_io = StringIO.new JSON.generate(json_key)
                 end
                 CredentialsLoader.load_and_verify_json_key_type json_key_io, CREDENTIAL_TYPE_NAME
                 read_json_key json_key_io
               else
                 {
                   "client_id"     => ENV[CredentialsLoader::CLIENT_ID_VAR],
                   "client_secret" => ENV[CredentialsLoader::CLIENT_SECRET_VAR],
                   "refresh_token" => ENV[CredentialsLoader::REFRESH_TOKEN_VAR],
                   "project_id"    => ENV[CredentialsLoader::PROJECT_ID_VAR],
                   "quota_project_id" => nil,
                   "universe_domain" => nil
                 }
               end
  new(token_credential_uri: TOKEN_CRED_URI,
      client_id:            user_creds["client_id"],
      client_secret:        user_creds["client_secret"],
      refresh_token:        user_creds["refresh_token"],
      project_id:           user_creds["project_id"],
      quota_project_id:     user_creds["quota_project_id"],
      scope:                scope,
      universe_domain:      user_creds["universe_domain"] || "googleapis.com")
    .configure_connection(options)
end

def self.read_json_key json_key_io
  json_key = JSON.parse json_key_io.read
  wanted = ["client_id", "client_secret", "refresh_token"]
  wanted.each do |key|
    raise InitializationError, "the json is missing the #{key} field" unless json_key.key? key
  end
  json_key
end

def duplicate options = {}
  options = deep_hash_normalize options
  super(
    {
      project_id: @project_id,
      quota_project_id: @quota_project_id
    }.merge(options)
  )
end

def includes_scope? required_scope
  missing_scope = Google::Auth::ScopeUtil.normalize(required_scope) -
                  Google::Auth::ScopeUtil.normalize(scope)
  missing_scope.empty?
end

def initialize options = {}
  options ||= {}
  options[:token_credential_uri] ||= TOKEN_CRED_URI
  options[:authorization_uri] ||= AUTHORIZATION_URI
  @project_id = options[:project_id]
  @project_id ||= CredentialsLoader.load_gcloud_project_id
  @quota_project_id = options[:quota_project_id]
  super options
end

def principal
  @client_id || :user_refresh
end

def revoke! options = {}
  c = options[:connection] || Faraday.default_connection
  retry_with_error do
    resp = c.post(REVOKE_TOKEN_URI, token: refresh_token || access_token)
    case resp.status
    when 200
      self.access_token = nil
      self.refresh_token = nil
      self.expires_at = 0
    else
      raise AuthorizationError.with_details(
        "Unexpected error code #{resp.status}",
        credential_type_name: self.class.name,
        principal: principal
      )
    end
    resp.body
  end
end

def update! options = {}
  # Normalize all keys to symbols to allow indifferent access.
  options = deep_hash_normalize options
  @project_id = options[:project_id] if options.key? :project_id
  @quota_project_id = options[:quota_project_id] if options.key? :quota_project_id
  super(options)
  self
end