require 'faraday'
require 'faraday/request/multipart'
require 'twitter/client'
require 'twitter/rest/api'
require 'twitter/rest/request'
require 'twitter/rest/request/multipart_with_file'
require 'twitter/rest/response/parse_json'
require 'twitter/rest/response/raise_error'
require 'twitter/rest/utils'

module Twitter
  module REST
    class Client < Twitter::Client
      include Twitter::REST::API
      BASE_URL = 'https://api.twitter.com'.freeze
      URL_PREFIX = BASE_URL
      ENDPOINT = BASE_URL
      attr_accessor :bearer_token

      # @param connection_options [Hash]
      # @return [Hash]
      def connection_options=(connection_options)
        warn "#{Kernel.caller.first}: [DEPRECATION] #{self.class.name}##{__method__} is deprecated and will be removed."
        @connection_options = connection_options
      end

      # @return [Hash]
      def connection_options
        @connection_options ||= {
          builder: middleware,
          headers: {
            accept: 'application/json',
            user_agent: user_agent,
          },
          request: {
            open_timeout: 10,
            timeout: 30,
          },
          proxy: proxy,
        }
      end

      # @params middleware [Faraday::RackBuilder]
      # @return [Faraday::RackBuilder]
      def middleware=(middleware)
        warn "#{Kernel.caller.first}: [DEPRECATION] #{self.class.name}##{__method__} is deprecated and will be removed."
        @middleware = middleware
      end

      # @note Faraday's middleware stack implementation is comparable to that of Rack middleware.  The order of middleware is important: the first middleware on the list wraps all others, while the last middleware is the innermost one.
      # @see https://github.com/technoweenie/faraday#advanced-middleware-usage
      # @see http://mislav.uniqpath.com/2011/07/faraday-advanced-http/
      # @return [Faraday::RackBuilder]
      def middleware
        @middleware ||= Faraday::RackBuilder.new do |faraday|
          # Convert file uploads to Faraday::UploadIO objects
          faraday.request :twitter_multipart_with_file
          # Checks for files in the payload, otherwise leaves everything untouched
          faraday.request :multipart
          # Encodes as "application/x-www-form-urlencoded" if not already encoded
          faraday.request :url_encoded
          # Handle error responses
          faraday.response :twitter_raise_error
          # Parse JSON response bodies
          faraday.response :twitter_parse_json
          # Set default HTTP adapter
          faraday.adapter :net_http
        end
      end

      # Perform an HTTP GET request
      def get(path, options = {})
        warn "#{Kernel.caller.first}: [DEPRECATION] #{self.class.name}##{__method__} is deprecated. Use Twitter::REST::Request#perform instead."
        perform_get(path, options)
      end

      # Perform an HTTP POST request
      def post(path, options = {})
        warn "#{Kernel.caller.first}: [DEPRECATION] #{self.class.name}##{__method__} is deprecated. Use Twitter::REST::Request#perform instead."
        perform_post(path, options)
      end

      # @return [Boolean]
      def bearer_token?
        !!bearer_token
      end

      # @return [Boolean]
      def credentials?
        super || bearer_token?
      end

      # Returns a Faraday::Connection object
      #
      # @return [Faraday::Connection]
      def connection
        @connection ||= Faraday.new(BASE_URL, connection_options)
      end
    end
  end
end