require 'uri'
require 'net/http'
require 'openssl'
require 'nokogiri'
require "json"
require 'active_support/all'

token = "05fcc54b-f553-47e9-b532-57b890134b24"
crss = ["station_code_1", "station_code_2"]
numRows = "8"

SCHEDULER.every "3m", :first_in => 0 do |job|

	crss.each do |crs|

		url = URI("https://lite.realtime.nationalrail.co.uk/OpenLDBWS/ldb6.asmx")

		http = Net::HTTP.new(url.host, url.port)
		http.use_ssl = true
		# http.verify_mode = OpenSSL::SSL::VERIFY_NONE

		request = Net::HTTP::Post.new(url)
		request["content-type"] = 'text/xml'
		request["cache-control"] = 'no-cache'
		request.body = "<?xml version=\"1.0\"?>\r\n<SOAP-ENV:Envelope xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:ns1=\"http://thalesgroup.com/RTTI/2014-02-20/ldb/\" xmlns:ns2=\"http://thalesgroup.com/RTTI/2010-11-01/ldb/commontypes\">\r\n  <SOAP-ENV:Header>\r\n    <ns2:AccessToken>\r\n      <ns2:TokenValue>#{token}</ns2:TokenValue>\r\n    </ns2:AccessToken>\r\n  </SOAP-ENV:Header>\r\n  <SOAP-ENV:Body>\r\n    <ns1:GetDepartureBoardRequest>\r\n      <ns1:numRows>#{numRows}</ns1:numRows>\r\n      <ns1:crs>#{crs}</ns1:crs>\r\n    </ns1:GetDepartureBoardRequest>\r\n  </SOAP-ENV:Body>\r\n</SOAP-ENV:Envelope>"

		response = http.request(request)

		parsed_json = Hash.from_xml(response.read_body).to_json 
		data = JSON.parse(parsed_json)

		stationMessage = data.dig("Envelope", "Body", "GetDepartureBoardResponse", "GetStationBoardResult", "nrccMessages")
		
		trains = []
		digResult = data.dig("Envelope", "Body", "GetDepartureBoardResponse", "GetStationBoardResult", "trainServices","service")

		if(digResult != nil)

			services = data['Envelope']['Body']['GetDepartureBoardResponse']['GetStationBoardResult']['trainServices']['service']

			if(services.kind_of?(Array))
			
				data['Envelope']['Body']['GetDepartureBoardResponse']['GetStationBoardResult']['trainServices']['service'].each do |child|
					
					
					isValidTime = Time.parse(child['etd']) rescue nil

					if isValidTime 
						timeDiff = "- #{time_diff(child['std'].to_time.to_i , child['etd'].to_time.to_i )} min"
					end
					
					
					item = {
						label: "#{child['destination']['location']['locationName']}",
						value: "#{child['std']} (#{child['etd']}) #{timeDiff}",
					}
					
					trains.push(item)
				
				end
			
				if(stationMessage == nil)
					send_event "NationalRail_#{crs}", { items: trains, message: ""}
				else
				
					message = stationMessage['message']
					indexOf = stationMessage['message'].index "<A"
					message.insert (indexOf.to_i + 2), " target='_blank'"
					message = "Notice: #{message}"
					send_event "NationalRail_#{crs}", { items: trains, message: message}
				end
			else
			
				send_event "NationalRail_#{crs}", { items: [{label: "No more trains today",  value: ":("}] }

			end
			
		else
			send_event "NationalRail_#{crs}", { items: [{label: "No more trains today",  value: ":("}] }
		
		end

	end

end

def time_diff(start_time, end_time)
  seconds_diff = (start_time - end_time).to_i.abs

  hours = seconds_diff / 3600
  seconds_diff -= hours * 3600

  minutes = seconds_diff / 60
end