module Flaun

# File lib/flaun.rb, line 22
def config_load(text, filename)
  dsl = Flaun::DSL.new
  dsl.instance_eval text, filename
  dsl.config
end

# File lib/flaun.rb, line 9
def run(*argv)
  Thread.abort_on_exception = true
  thread = Thread.new do
    start *argv
  end

  loop do
    puts 'quit? (y/N)'
    break if $stdin.gets.chomp == 'y'
  end
  thread.kill
end

# File lib/flaun.rb, line 28
def start(target_name = nil, config_file = nil)
  config_file ||= default_config_file
  unless File.exist? config_file
    not_found_config_file
    exit 1
  end
  config = config_load(open(config_file).read, config_file)

  if target_name.nil?
    not_target_name config
    exit 1
  end

  target = config[target_name.to_sym]

  ssh_forward_and_launch target
end

# File lib/flaun.rb, line 48
def default_config_file
  Pathname.new("~/.flaun").expand_path.to_s
end

# File lib/flaun.rb, line 52
def not_found_config_file
  $stderr.puts 'Plaese, create file ~/.flaun'
end

# File lib/flaun.rb, line 56
def not_target_name(config)
  $stderr.puts 'select target:'
  puts config.targets.keys
end

# File lib/flaun.rb, line 61
def ssh_forward_and_launch(target)
  Net::SSH.start(target.host, target.user ) do |ssh|
    ssh.forward.local(
      target.forward_port,
      target.forward_host,
      target.forward_host_port)

    Launchy.open( target.access_url )

    ssh.loop { true }
  end
end