polar_rrrecord2txt

#!/usr/bin/env ruby
# Converts RAW Polar RR recording result data files in txt file format (same format as Polar Flow export)

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

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

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

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

def output_txt(parsed)
  result = parsed[:result]
  rr = parsed[:rr]

  start_time = DateTime.new(result.start_time.date.year, result.start_time.date.month, result.start_time.date.day, result.start_time.time.hour, result.start_time.time.minute, result.start_time.time.seconds, "%+i" % (result.start_time.time_zone_offset / 60)).to_time
  end_time = DateTime.new(result.end_time.date.year, result.end_time.date.month, result.end_time.date.day, result.end_time.time.hour, result.end_time.time.minute, result.end_time.time.seconds, "%+i" % (result.end_time.time_zone_offset / 60)).to_time

  puts "Started       : #{start_time}"
  puts "Ended         : #{end_time}"
  puts "Heart rate min: #{result.hr_min}"
  puts "Heart rate avg: #{result.hr_avg}"
  puts "Heart rate max: #{result.hr_max}"
  time = 0.0
  result = "0.000 #{(rr.rr_intervals.first.to_f / 1000).round(3)}\n"
  rr.rr_intervals.each do |i|
    i = i.to_f / 1000
    time += i
    result << "#{time.round(3)} #{i.round(3)}\n"
  end
  result
end

puts "Converting Polar RR recording result in '#{dir}' to TXT format as '#{output_file}'..."
parsed = PolarDataParser.parse_rr_recording_result(dir)
if parsed.key?(:result) && parsed.key?(:rr)
  File.open(output_file, 'w') do |f|
    f << output_txt(parsed)
  end
  puts "Done"
else
  puts "Error: couldn't find RR recording result"
end