Rakefile

require 'yaml'
require 'erb'
require 'pathname'
require 'rake/clean'

PROJECT_NAME = Pathname.new(Dir.pwd).basename.freeze
USERNAME = `whoami`.strip.freeze

SLIDEMAKER_PATH = Pathname.new('../../slidemaker').freeze
PUBLIC_PATH = Pathname.new("../slides/#{PROJECT_NAME}").freeze

task default: :work

desc 'Launch the project in Google Chrome, Sublime Text and Guard'
task work: [:sublime, :chrome, :guard]

desc 'Launch the slides in Google Chrome in print-pdf mode'
task pdf: :host do |t|
  sh "open #{url}?print-pdf"
end

namespace :static do
  desc 'Extract static assets into a public project'
  task extract: [PUBLIC_PATH, 'config.yml'] do
    if PUBLIC_PATH.empty?
      title = YAML.load_file('config.yml')['title']
      unknown_file = PUBLIC_PATH.join('slides')

      cp_r 'slides/.', PUBLIC_PATH
      rm unknown_file if unknown_file.exist?
      render_erb(SLIDEMAKER_PATH.join('erb', 'README.md.erb'), PUBLIC_PATH.join('README.md'), title)
      open(PUBLIC_PATH.parent.join('README.md'), 'a') do |readme|
        readme << "* [#{title}](https://rastamhadi.github.io/slides/#{PROJECT_NAME})\n"
      end
    end
  end
  CLOBBER.include(PUBLIC_PATH)

  desc 'Launch extracted static assets project in gitsh'
  task gitsh: PUBLIC_PATH do
    cd PUBLIC_PATH do
      sh 'gitsh'
    end
  end

  desc 'Launch extracted static assets project in Sublime Text'
  task sublime: PUBLIC_PATH do
    cd PUBLIC_PATH do
      sh 'sublime .'
    end
  end
end

namespace :host do
  desc 'Host the slides locally and print the URL'
  task url: :host do
    puts url
  end
end

desc 'Host the slides locally'
task host: "/Users/#{USERNAME}/Sites/#{PROJECT_NAME}"

desc 'Launch the slides in Google Chrome'
task chrome: 'slides/index.html' do |t|
  sh "open #{t.source}"
end

desc 'Guard the project'
task guard: :init do
  sh 'rbenv exec bundle exec guard'
end

desc 'Launch gitsh'
task gitsh: '.git/refs/remotes' do
  sh 'gitsh'
end

desc 'Launch the project in Sublime Text'
task sublime: :init do
  sh 'sublime .'
end

desc 'Generate a new reveal-ck project'
task init: ['Gemfile.lock', 'Guardfile', 'slides/index.html']

file '.git/refs/remotes' => '.git' do
  puts 'What is your Bitbucket username?'
  username = $stdin.gets.chomp
  sh "git remote add origin git@bitbucket.org:#{username}/#{PROJECT_NAME}.git"
end

file '.git' do
  sh 'git init'
end

SYM_LINK_PATH = "/Users/#{USERNAME}/Sites/#{PROJECT_NAME}".freeze
file SYM_LINK_PATH => 'slides/index.html' do |t|
  sh "ln -s #{Pathname.new(t.source).parent.realpath} #{t.name}"
end
CLOBBER.include(SYM_LINK_PATH)

file 'slides/index.html' => 'slides.md' do
  sh 'reveal-ck generate'
end
CLOBBER.include('slides')

file 'slides.md' => [SLIDEMAKER_PATH.join('erb', 'slides.md.erb'), 'config.yml'] do |t|
  title = YAML.load_file(t.sources.last)['title']
  render_erb(t.source, t.name, title)
end
CLOBBER.include('slides.md')

file 'config.yml' => SLIDEMAKER_PATH.join('erb', 'config.yml.erb') do |t|
  puts 'What is the title of your slides?'
  title = $stdin.gets.chomp
  render_erb(t.source, t.name, title)
end
CLOBBER.include('config.yml')

file 'Gemfile.lock' => ['Gemfile', '.ruby-version'] do
  sh 'rbenv exec bundle install'
end
CLOBBER.include('Gemfile.lock')

Rake::FileList.new(SLIDEMAKER_PATH.join('templates', '*')).each do |template|
  file template.pathmap('%f') => template do |t|
    cp t.source, t.name
  end
  CLOBBER.include(template.pathmap('%f'))
end

file '.ruby-version' do
  sh "rbenv versions | tail -n1 | awk '{$1=$1};1' > .ruby-version"
end
CLOBBER.include('.ruby-version')

directory PUBLIC_PATH

def url
  "http://#{`ipconfig getifaddr en0`.strip}/~#{USERNAME}/#{PROJECT_NAME}"
end

def render_erb(erb_path, out_path, title)
  erb = ERB.new(File.read(erb_path)).result(binding)
  open(out_path, "w+") { |f| f.write(erb) }
end