Do an easy line-up

lineup.rb

require 'trollop'

opts = Trollop.options do 
    banner <<-EOS
      This programs help you to do a running order. Use it like this:

        ruby lineup.rb -b Band "Best Band Ever" -t 30 75 -e 21 25 -s 20
      
        Band
        Set: 21:25 - 21:55
        Best Band Ever
        Set: 22:15 - 23:30
      
      If every band have the same set duration, just pass it once, and it will works just fine.

      The options are:
    EOS
    opt :bands, 'an array with name of bands', type: :strings
    opt :time, 'an array of set duration in minutes', type: :ints
    opt :beginning, 'Beginning of the shows', type: :ints, :default => [20, 30]
    opt :set, 'Duration of set changes', :default => 15
end

def lineup(band, set_b, delay, h)
  set_end = set_b + h[band] * 60
  puts band
  puts "Set: #{set_b.hour}:#{"%02d" % set_b.min.to_i} - #{set_end.hour}:#{"%02d" % set_end.min.to_i}"
  h.shift
  next_show = set_end + delay * 60
  lineup(h.first.first, next_show, delay, h) if !h.empty?
end

set_time = opts[:time]
bands = opts[:bands]

if set_time.length != bands.length
  (bands.length - 1).times { |nb| set_time.push(set_time.first) }
end

h = Hash[bands.zip(set_time)]
hour = opts[:beginning][0]
minute = opts[:beginning][1]
time = Time.gm(2000,1,1, hour, minute)

lineup(bands.first, time, opts[:set], h)