module Subtt

# File lib/subtt/converter.rb, line 2
def self.smi2srt(smi_path)
  srt_path = smi_path.gsub(/\.smi/, '.srt')
  puts "converted into #{srt_path}"
  File.open(srt_path, 'w') do |srt|
    smi = SAMI.load smi_path

    duration = 5000
    smi.each_with_index do |e, i|
      from = Duration.new(e[0])
      to = Duration.new(e[0] + duration)

      nextSync = smi.fetch(i+1)
      if !nextSync.nil? and nextSync[0] <= to
        to.set nextSync[0] - 10
      end

      srt.write "#{i+1}\n#{from} --> #{to}\n#{e[1]}\n\n"
    end
  end
end