require 'oauth'
require 'csv'
require 'uuidtools'
require 'json'
require 'active_support'

require File.dirname(__FILE__) + '/oehclient/helper'
require File.dirname(__FILE__) + '/oehclient/exception'
require File.dirname(__FILE__) + '/oehclient/config'

require File.dirname(__FILE__) + '/oehclient/interaction'
require File.dirname(__FILE__) + '/oehclient/data'



module OEHClient

	class << self

		attr_accessor :spaces, :space_mgr

		# configure provides the basic interface for passing tenancy configuration to the gem
		def configure_space

			# if space_mgr attribute is NIL then return a new instance of the OEHClient::Config::SpaceManager
			#  singleton class
			@space_mgr ||= OEHClient::Config::SpaceManager.instance
			# yield control to the block passed in the configuration
			yield(@space_mgr)

		end

		# get wraps the GET method of the access token and manages the response that is returned
		def get(token, url, header={})

			# force the new hash.  Testing in RSPEC uncovered issue with the default not being followed
			header ||= Hash.new

			# if the token is not a proper OAuth::AccessToken, then raise the Oeh::Exception::InvalidTokenException
			#  exception to the calling method
			raise OEHClient::Exception::InvalidTokenException unless (token.kind_of?(OAuth::AccessToken))
			# send the GET request, manage the returned response, and return the body of the response to the
			#   calling method
			token.get(url, header.empty? ? OEHClient::Helper::Request.default_JSON_header() : header)

		end

		# post wraps the POST method of the access token and manages the response that is returned
		def post(token, url, header={}, body)

			# force the new hash.  Testing in RSPEC uncovered issue with the default not being followed
			header ||= Hash.new

			# if the token is not a proper OAuth::AccessToken, then raise the Oeh::Exception::InvalidTokenException
			#  exception to the calling method
			raise OEHClient::Exception::InvalidTokenException unless (token.kind_of?(OAuth::AccessToken))
			# send the POST request, manage the returned response, and return the body of the response to the
			#   calling method
			token.post(url, ActiveSupport::JSON.encode(body), header.empty? ? OEHClient::Helper::Request.default_JSON_header() : header)


		end

		# put wraps the PUT method of the access token and manages the response that is returned
		def put(token, url, header={}, body)

			# force the new hash.  Testing in RSPEC uncovered issue with the default not being followed
			header ||= Hash.new

			# if the token is not a proper OAuth::AccessToken, then raise the Oeh::Exception::InvalidTokenException
			#  exception to the calling method
			raise OEHClient::Exception::InvalidTokenException unless (token.kind_of?(OAuth::AccessToken))
			# send the PUT request, manage the returned response, and return the body of the response to the
			#   calling method
			token.put(url, ActiveSupport::JSON.encode(body), header.empty? ? OEHClient::Helper::Request.default_JSON_header() : header)

		end
	
	end

end