#!/usr/bin/env ruby
#
# usage: patchmaster [-v] [-n] [-i] [-w] [-p port] [-d] [pm_file]
#
# Starts PatchMaster and optionally loads pm_file.
#
# -v outputs the version number and exits.
#
# The -n flag tells PatchMaster to not use MIDI. All MIDI errors such as not
# being able to connect to the MIDI instruments specified in pm_file are
# ignored, and no MIDI data is sent/received. That is useful if you want to
# run PatchMaster without actually talking to any MIDI instruments.
#
# To run PatchMaster from within an IRB session use -i. Reads
# ./.patchmasterrc if it exists, $HOME/.patchmasterrc if not. See the
# documentation for details on the commands that are available.
#
# To run PatchMaster using a Web browser GUI use -w and point your browser
# at http://localhost:4567. To change the port, use -p.
#
# The -d flag turns on debug mode. The app becomes slightly more verbose and
# logs everything to `/tmp/pm_debug.txt'.

require 'optparse'

use_midi = true
gui = :curses
port = nil
OptionParser.new do |opts|
  opts.banner = "usage: patchmaster [options] [pm_file]"
  opts.on("-d", "--debug", "Turn on debug mode") { $DEBUG = true }
  opts.on("-n", "--no-midi", "Turn off MIDI processing") { use_midi = false }
  opts.on("-i", "--irb", "Use an IRB console") { gui = :irb }
  opts.on("-w", "--web", "Use a Web browser GUI") { gui = :web }
  opts.on("-p", "--port PORT", "Web browser GUI port number") { |opt| port = opt.to_i }
  opts.on("-v", "--version", "Show version number and exit") do
    version_line = IO.readlines(File.join(File.dirname(__FILE__), '../Rakefile')).grep(/GEM_VERSION\s*=/).first
    version_line =~ /(\d+\.\d+\.\d+)/
    puts "patchmaster #{$1}"
    exit 0
  end
  opts.on_tail("-h", "-?", "--help", "Show this message") do
    puts opts
    exit 0
  end
end.parse!(ARGV)

# Must require patchmaster here, after handling options, because Singleton
# initialize code checks $DEBUG.
require 'patchmaster'

pm = PM::PatchMaster.instance
pm.use_midi = use_midi
pm.load(ARGV[0]) if ARGV[0]
case gui
when :curses
  require 'patchmaster/curses/main'
  pm.gui = PM::Main.instance
  pm.run
when :irb
  require 'patchmaster/irb/irb'
  start_patchmaster_irb(File.join(File.dirname(__FILE__), 'irb_init.rb'))
when :web
  require 'patchmaster/web/sinatra_app'
  app = PM::SinatraApp.instance
  app.port = port if port
  pm.gui = app
  pm.run
end