require 'rprogram/task'
require 'rdvd-slideshow/slideshow_input'

module RDvdSlideshow

  #
  # ==dvd-slideshow options:
  #
  # <tt>-n</tt>:: <tt>mencoder.name</tt>
  # <tt>-o</tt>:: <tt>mencoder.output_dir</tt>
  # <tt>-b</tt>:: <tt>mencoder.background</tt>
  # <tt>-a</tt>:: <tt>mencoder.audio_file</tt>
  # <tt>-p</tt>:: <tt>mencoder.pal</tt>
  # <tt>-mp2</tt>:: <tt>mencoder.mp2</tt>
  # <tt>-L</tt>:: <tt>mencoder.low_quality</tt>
  # <tt>-H</tt>:: <tt>mencoder.high_quality</tt>
  # <tt>-theme</tt>:: <tt>mencoder.theme</tt>
  # <tt>-border</tt>:: <tt>mencoder.border</tt>
  # <tt>-sharpen</tt>:: <tt>mencoder.sharpen</tt>
  # <tt>-r</tt>:: <tt>mencoder.auto_crop</tt>
  # <tt>-w</tt>:: <tt>mencoder.widescreen</tt>
  # <tt>-smp</tt>:: <tt>mencoder.smp</tt>
  # <tt>-mpeg2enc</tt>:: <tt>mencoder.mpeg2enc</tt>
  # <tt>-vcd</tt>:: <tt>mencoder.vcd</tt>
  # <tt>-flv</tt>:: <tt>mencoder.flv</tt>
  # <tt>-s</tt>:: <tt>mencoder.output_size</tt>
  # <tt>-f</tt>:: <tt>mencoder.input_file</tt>
  #
  # Instead of providing an input file it is possible to programatically define the input with the write_input method
  # 
  class SlideshowTask < RProgram::Task
    
    long_option :flag => '-n', :name => :name
    long_option :flag => '-o', :name => :output_dir
    long_option :flag => '-b', :name => :background
    long_option :flag => '-a', :name => :audio_file
    long_option :flag => '-p', :name => :pal
    long_option :flag => '-mp2', :name => :mp2
    long_option :flag => '-L', :name => :low_quality
    long_option :flag => '-H', :name => :high_quality
    long_option :flag => '-theme'
    long_option :flag => '-border'
    long_option :flag => '-sharpen'
    long_option :flag => '-r', :name => :auto_crop
    long_option :flag => '-w', :name => :widescreen
    long_option :flag => '-smp'
    long_option :flag => '-mpeg2enc'
    long_option :flag => '-vcd'
    long_option :flag => '-flv'
    long_option :flag => '-s', :name => :output_size
    long_option :flag => '-f', :name => :input_file
    
    #
    # Configures the input configuration of the slideshow
    # and generates automatically the corresponding input file.
    # The provided block is used to configure the SlideshowInput object
    #
    def write_input(&block)
      @input = SlideshowInput.new do |input|
        block.call(input) if block
      end
      @options[:input_file] = @input.file_path
    end
    
  end

end