#!/usr/bin/env ruby

$:.unshift File.join(File.dirname(__FILE__), '..', 'lib')

require 'shining'
require 'stringex'
include Shining::FileMethods

ACTIONS   = {
  :new_on!        => ['build'],
  :new_slide!     => ['slide'],
  :help_and_exit! => ['help', '-h', '--help'],
  :play           => ['play', 'go'],
  :deploy         => ['deploy'],
  :remove         => ['remove', 'delete', 'rm'],
  :version        => ['version', '-v'],
  :start          => ['go', 'start']
}

def bail! reason
  Shining.error reason
  exit -2
end

def figure_what_to_do!
  help_and_exit! if ARGV.empty?
  if ACTIONS.values.flatten.include? ARGV.first
    action = ACTIONS.select { |action, args| args.include? ARGV.first }.flatten.first
    send action, *ARGV[1..(ARGV.length - 1)]
  else
    new_on! ARGV.first
  end
end

def help_and_exit!
  STDERR.puts <<-HELP
Shine - Generates a new Shining presentation.
  Usage:
    shine <directory>
  Example:
    shine mycoolpreso
  Other commands you can run:
    help        shows this menu
    version     shows the current version of Shining you have installed
  Commands you can run from inside a presentation directory:
    slide       takes 1 argument with the slide name and optionally the format,
                as in:
                  $ shine slide pretty
                The above will create a HTML slide called "pretty".
    deploy      deploys the presentation to Heroku
    remove      takes a slide name as argument. Removes the slide. Example:
                  $ shine remove pretty
  HELP
  exit -1
end

def new_on! dir
  Shining::Preso.new dir
end

def new_slide! name, format = 'html'
  preso = Shining::Preso.open Dir.pwd
  name, extension = name_and_extension(name)
  extension = format if extension.blank?
  preso.new_slide "#{name}.#{extension}", :with => ['styles', 'script']
end

def play
  preso   = Shining::Preso.open Dir.pwd
  player  = Shining::Player.new preso
  player.go!
end

def deploy name = nil
  preso   = Shining::Preso.open(Dir.pwd)
  heroku  = Shining::Heroku.new preso
  name ||= preso.name.to_url
  heroku.deploy name
end

def remove slide
  preso = Shining::Preso.open Dir.pwd
  preso.remove_slide slide
end

def version
  Shining.say Shining::VERSION
end

def start port = 4567
  preso = Shining::Preso.open Dir.pwd
  raise "Cannot find the rackup command in your path. Make sure Rack is installed!" if `which rackup`.empty?
  puts "Shining started on port #{port}."
  `rackup -p #{port}` 
end

figure_what_to_do!