require 'oauth'
require 'rest-client'
require 'csv'
require 'uuidtools'
require 'json'
require 'active_support'
require 'openssl'

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

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




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

		# wraps the GET method of the RestClient::Resource and manages the response that is returned
		def get(url, oauth_consumer=nil, *args)
			# retrieved the passed options from the SPLAT
			options = (args.length > 0 ? args[0] : Hash.new)
			# if the oauth_consumer is not a proper OAuth::Consumer, then raise the Oeh::Exception::InvalidTokenException
			#  exception to the calling method
			raise OEHClient::Exception::InvalidConsumerException if (!oauth_consumer.nil? && !oauth_consumer.kind_of?(OAuth::Consumer))

			# reset execution processes 
		    RestClient.reset_before_execution_procs
			# if this request has an oauth token, sign the RestClient object
			unless (oauth_consumer.nil?)
		    	# add the oauth signature
		    	RestClient.add_before_execution_proc { |req, params| oauth_consumer.sign! req }
			end

			# force the new hash for the header and params if they are NIL
			header = (options.has_key?(:header) ? options[:header] : OEHClient::Helper::Request.default_JSON_header())
			# merge parameters into the header if they are passed
			header.merge!(:params => options[:params] ) if (options.has_key?(:params))
			puts("URL: #{url} ; Header: #{header}")
			# send the GET request, manage the returned response, and return the body of the response to the
			#   calling method
			RestClient::Request.execute(method: :get, url: url, headers: header, verify_ssl: OpenSSL::SSL::VERIFY_NONE) { | response, request, result | OEHClient::Helper::Response.handle(response)}

		end

		# post wraps the POST method of the access token and manages the response that is returned
		def post(url, oauth_consumer=nil, *args)

			# retrieved the passed options from the SPLAT
			options = (args.length > 0 ? args[0] : Hash.new)
			# if the oauth_consumer is not a proper OAuth::Consumer, then raise the Oeh::Exception::InvalidTokenException
			#  exception to the calling method
			raise OEHClient::Exception::InvalidConsumerException if (!oauth_consumer.nil? && !oauth_consumer.kind_of?(OAuth::Consumer))

			# reset execution processes 
		    RestClient.reset_before_execution_procs
			# if this request has an oauth token, sign the RestClient object
			unless (oauth_consumer.nil?)
		    	# add the oauth signature
		    	RestClient.add_before_execution_proc { |req, params| oauth_consumer.sign! req }
			end

			# force the new hash for the header and params if they are NIL
			header = (options.has_key?(:header) ? options[:header] : OEHClient::Helper::Request.default_JSON_header())
			# merge parameters into the header if they are passed
			header.merge!(:params => options[:params] ) if (options.has_key?(:params))

			# send the POST request, manage the returned response, and return the body of the response to the
			#   calling method
			RestClient.post(url, options[:payload], header) { | response, request, result | OEHClient::Helper::Response.handle(response)}
		end

		# put wraps the PUT method of the access token and manages the response that is returned
		def put(url, oauth_consumer=nil, *args)
			# retrieved the passed options from the SPLAT
			options = (args.length > 0 ? args[0] : Hash.new)
			# if the oauth_consumer is not a proper OAuth::Consumer, then raise the Oeh::Exception::InvalidTokenException
			#  exception to the calling method
			raise OEHClient::Exception::InvalidConsumerException if (!oauth_consumer.nil? && !oauth_consumer.kind_of?(OAuth::Consumer))

			# reset execution processes 
		    RestClient.reset_before_execution_procs
			# if this request has an oauth token, sign the RestClient object
			unless (oauth_consumer.nil?)
		    	# add the oauth signature
		    	RestClient.add_before_execution_proc { |req, params| oauth_consumer.sign! req }
			end

			# force the new hash for the header and params if they are NIL
			header = (options.has_key?(:header) ? options[:header] : OEHClient::Helper::Request.default_JSON_header())
			# merge parameters into the header if they are passed
			header.merge!(:params => options[:params] ) if (options.has_key?(:params))

			# send the POST request, manage the returned response, and return the body of the response to the
			#   calling method
			RestClient.put(url, options[:payload], header) { | response, request, result | OEHClient::Helper::Response.handle(response)}
		end
	
	end

end