Class: Courseware::Composer

Inherits:
Object
  • Object
show all
Defined in:
lib/courseware/composer.rb

Instance Method Summary collapse

Constructor Details

#initialize(config, repository = nil) ⇒ Composer

Returns a new instance of Composer.



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# File 'lib/courseware/composer.rb', line 2

def initialize(config, repository=nil)
  @config     = config
  @repository = repository || Courseware::Repository.new(config)

  if File.exists?(@config[:presfile])
    @showoff    = JSON.parse(File.read(@config[:presfile]))
    @coursename = @showoff['name']
    @prefix     = @showoff['name'].gsub(' ', '_')
    @sections   = @showoff['sections']
  end
end

Instance Method Details

#build(subject) ⇒ Object 



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# File 'lib/courseware/composer.rb', line 14

def build(subject)
  courselevel!

  if subject.nil?
    display_tags
    raise "Please re-run this task with a list of tags to include."
  end

  subject.each do |tag|
    key = "tag:#{tag}"
    @showoff['sections'].each do |section|
      raise 'All sections must be represented as Hashes to customize.' unless section.is_a? Hash

      if section.include? key
        raise "A section in showoff.json refers to #{section[key]}, which does not exist." unless File.exist? section[key]
        section['include'] = section[key]
      end
    end
  end

  # normalize the output and trim unused tags
  @showoff['sections'].each do |section|
    section.select! { |k,v| k == 'include' }
  end
  @showoff['sections'].reject! { |section| section.empty? }

  name = Courseware.question('What would you like to call this variant?', 'custom').gsub(/\W+/, '_')
  desc = Courseware.question("Enter a customized description if you'd like:")

  @showoff['description'] = desc if desc

  File.write("#{name}.json", JSON.pretty_generate(@showoff))
  puts "Run your presentation with `showoff serve -f #{name}.json` or `rake present`"
end

#package(subject) ⇒ Object 



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# File 'lib/courseware/composer.rb', line 49

def package(subject)
  courselevel!
  on_release!
  pristine!

  subject ||= Courseware.choose_variant
  subject   = subject.to_s
  content   = Courseware.parse_showoff(subject)
  variant   = File.basename(subject, '.json')
  current   = @repository.current(@coursename)

  if variant == 'showoff'
    variant = @prefix
    output  = @prefix
  else
    output  = "#{@prefix}-#{variant}"
  end

  FileUtils.rm_rf "build/#{variant}"
  FileUtils.mkdir_p "build/#{variant}"
  FileUtils.cp subject, "build/#{variant}/showoff.json"

  content['sections'].each do |section|
    if section.is_a? Hash
      path = section['include']
    else
      path = section
    end

    dir   = File.dirname path
    FileUtils.mkdir_p "build/#{variant}/#{dir}"
    FileUtils.cp path, "build/#{variant}/#{path}"

    next unless section.is_a? Hash

    files = JSON.parse(File.read(path))
    files.each do |file|
      FileUtils.cp "#{dir}/#{file}", "build/#{variant}/#{dir}/#{file}"
    end
  end

  # support is special
  FileUtils.cp_r '../_support', "build/#{variant}/_support"
  FileUtils.rm_f "build/#{variant}/_support/*.pem"
  FileUtils.rm_f "build/#{variant}/_support/*.pub"
  FileUtils.rm_f "build/#{variant}/_support/aws_credentials"

  # duplicate from cwd to build/variant everything not already copied
  Dir.glob('*').each do |thing|
    next if thing == 'build'
    next if File.extname(thing) == '.json'
    next if File.exist? "build/#{variant}/#{thing}"
    FileUtils.ln_s "../../#{thing}", "build/#{variant}/#{thing}"
  end

  system("tar -C build --dereference -czf build/#{output}-#{current}.tar.gz  #{variant}")
  if Courseware.confirm("Would you like to clean up the output build directory?")
    FileUtils.rm_rf "build/#{variant}"
  end

end