polar_fav2xml

#!/usr/bin/env ruby
# Converts RAW Polar training session data files in Garmin GPX file format.

require 'time'
require 'nokogiri'
require "#{File.dirname(__FILE__)}/lib/polar_data_parser"

def usage
  puts "Usage:"
  puts "  #{__FILE__} <directory> [<xml file>]"
end

dir = ARGV[0]
unless dir
  usage
  exit -2
end

output_file = ARGV[1] || File.join(dir, 'output.xml')

def output_gpx(parsed)
  fav_id = parsed[:fav_id]
  created = fav_id.created
  modified = fav_id.last_modified

  created_date = DateTime.new(created.date.year, created.date.month, created.date.day, created.time.hour, created.time.minute, created.time.seconds)
  modified_date = DateTime.new(modified.date.year, modified.date.month, modified.date.day, modified.time.hour, modified.time.minute, modified.time.seconds)

  fav_tst = parsed[:fav_tst]
  exc_target = fav_tst.exercise_target[0]
  route = exc_target.route
  segment = exc_target.strava_segment_target
  kom = segment.strava_segment_targets.kom_qom
  pr = segment.strava_segment_targets.own_best
  
  builder = Nokogiri::XML::Builder.new(:encoding => 'UTF-8') do |xml|
    xml.gpx('version' => "1.1",
            'xmlns' => "http://www.topografix.com/GPX/1/1",
            'xmlns:xsi' => "http://www.w3.org/2001/XMLSchema-instance",
            'xmlns:gpxtpx' => "http://www.garmin.com/xmlschemas/TrackPointExtension/v1",
            'creator' => 'https://github.com/cmaion/polar') {
      xml.metadata {
        xml.author {
          xml.name 'https://github.com/cmaion/polar'
        }		
      }
	  xml.idbpb{
	    xml.id fav_id.ecosystem_id
	    xml.created_date created_date.iso8601
	    xml.modified_date modified_date.iso8601
	  }
	  xml.name fav_tst.name.text
	  xml.sport fav_tst.sport_id.value
	  xml.pid fav_tst.training_program_id.value
	  xml.target_type exc_target.target_type
	  xml.route_id route.value
	  xml.segment{
	    xml.type segment.strava_segment_type
		xml.pr "%s:%s.%s" % [pr.minutes, pr.seconds, pr.millis]
		xml.kom "%s:%s.%s" % [kom.minutes, kom.seconds, kom.millis]
	  }
    }
  end
  builder.to_xml
end

puts "Converting Polar favorite in '#{dir}' to XML format as '#{output_file}'..."
parsed = PolarDataParser.parse_fav(dir)
if parsed.key?(:fav_id) && parsed.key?(:fav_tst)
  File.open(output_file, 'w') do |f|
    f << output_gpx(parsed)
  end
  puts "Done"
else
  puts "Error: couldn't find favorite"
end