require 'active_support'
require 'active_support/core_ext'
require 'active_support/concern'
require 'multi_json'
require 'rack/oauth2'
require 'patch/rack/oauth2/util'

module FbGraph2
  mattr_accessor :gem_version, :logger, :debugging, :_http_config_, :object_classes

  DEFAULT_ROOT_URL = 'https://graph.facebook.com'
  DEFAULT_API_VERSION = 'v7.0'
  self.gem_version = File.read(File.join(__dir__, '../VERSION')).strip
  self.logger = Logger.new(STDOUT)
  self.logger.progname = 'FbGraph2'

  class << self
    def root_url
      ::Thread.current['fb_graph2_root_url'] || DEFAULT_ROOT_URL
    end

    def root_url=(value)
      ::Thread.current['fb_graph2_root_url'] = value
    end

    def api_version
      ::Thread.current['fb_graph2_api_version'] || DEFAULT_API_VERSION
    end

    def api_version=(value)
      ::Thread.current['fb_graph2_api_version'] = value
    end

    def object_classes
      FbGraph2::Node.descendants
    end

    def debugging?
      !!self.debugging
    end
    def debug!
      Rack::OAuth2.debug!
      self.debugging = true
    end

    def http_client(access_token = nil)
      _http_client_ = HTTPClient.new(
        agent_name: "FbGraph2 (#{gem_version})"
      )

      # NOTE: httpclient gem seems stopped maintaining root certtificate set, use OS default.
     _http_client_.ssl_config.clear_cert_store
     _http_client_.ssl_config.cert_store.set_default_paths

      _http_client_.request_filter.delete_if do |filter|
        filter.is_a? HTTPClient::WWWAuth
      end
      _http_client_.request_filter << RequestFilter::Authenticator.new(access_token) if access_token.present?
      _http_client_.request_filter << RequestFilter::Debugger.new if self.debugging?
      _http_config_.try(:call, _http_client_)
      _http_client_
    end
    def http_config(&block)
      Rack::OAuth2.http_config &block unless Rack::OAuth2.http_config
      self._http_config_ ||= block
    end
  end
end

require_relative 'fb_graph2/exception'
require_relative 'fb_graph2/attribute_assigner'
require_relative 'fb_graph2/node'
require_relative 'fb_graph2/collection'
require_relative 'fb_graph2/searchable'
require_relative 'fb_graph2/edge'
[
  '',
  'request_filter'
].each do |dir|
  Dir[File.join(__dir__, 'fb_graph2', dir, '*.rb')].each do |file|
    require file
  end
end