module Banjo

# File lib/banjo.rb, line 34
def self.hush_all
  Banjo::Channel.channels.each do |channel|
    channel.new.hush
  end
end

# File lib/banjo.rb, line 23
def self.load_channels
  load_channels!
rescue Exception
end

# File lib/banjo.rb, line 28
def self.load_channels!
  Dir['./channels/*.rb'].each do |file|
    load file
  end
end

# File lib/banjo.rb, line 40
def self.play
  Banjo.measures_per_loop ||= 1
  Banjo.ticks_per_period    = Banjo.ticks_per_beat * Banjo.beats_per_measure * Banjo.measures_per_loop
  poll_rate                 = (60.0 / Banjo.tempo / Banjo.ticks_per_beat)
  p "Tick every: #{poll_rate} seconds"

  EventMachine.run do
    Banjo.tick      = 0
    self.loop_count = 0

    # Display available channels
    p Banjo::Channel.channels

    # Shut down all channels
    hush_all

    EM.add_periodic_timer(poll_rate) do
      #puts Time.now if (Banjo.tick % 4 == 0)
      p Banjo.tick

      Banjo.load_channels if Banjo.tick == 0

      Banjo::Channel.channels.each do |klass|
        channel = klass.new
        channel.perform
      end

      Banjo.tick = update_counters(Banjo.tick)
    end

    puts "Banjo Reactor started..."
  end
end

# File lib/banjo.rb, line 74
def self.update_counters(tick)
  if tick < (ticks_per_period - 1)
    tick += 1
  else
    puts "Loop: #{self.loop_count += 1}"
    tick = 0
  end
  tick
end