# encoding: utf-8
require 'piet'
require 'easy_html_generator/generator/base'

# this generator minifies image files from src folder and copies them
# to the dist folder
class EasyHtmlGenerator::Generator::Minimize::Images <
  EasyHtmlGenerator::Generator::Base

  def initialize(project, config)
    super(project, config)

    @config.src  = project.config.paths.src.images
    @config.dest = project.config.paths.dist.images
  end

  def do_file(src, target, *args)
    return unless File.exist?(src) && File.file?(src)
    log "-> do_file #{src}"

    FileUtils.mkdir_p File.dirname(target)

    args.push target

    FileUtils.copy(src, target)

    Piet.optimize(target, @config.options)

    EasyHtmlGenerator::Checksum.store_file(src)
  rescue StandardError
    log '-> you have to install "optipng" and "jpegoptim"'.red
  end
end