#!/usr/bin/ruby

=begin
Usage: atom-show [options] source
    displays a feed human-readably

    'source' can be a path on the local filesystem, the
  URL of an Atom Collection or '-' for stdin.
=end

require 'atom/tools'
include Atom::Tools

def parse_options
  options = { }

  opts = OptionParser.new do |opts|
    opts.banner = <<END
Usage: #{$0} [options] [source]
    displays a feed human-readably

    'source' can be a path on the local filesystem, the
  URL of an Atom Collection or '-' for stdin.
END

    opts.on('-c', '--complete', "Follow previous and next links in the source feed to obtain the entire logical feed") do
     options[:complete] = true
    end

    opts.on('-n', '--content [MAX-LENGTH]', "Display max-length words of each entry's content") do |length|
      options[:content] = length ? length.to_i : 0
    end

    atom_options opts, options
  end

  opts.parse!(ARGV)

  if ARGV.length > 1
    puts opts
    exit
  end

  options
end

if __FILE__ == $0
  require 'optparse'

  options = parse_options

  source = ARGV[0]
  source ||= '-'

  entries = parse_input source, options

  entries.each do |e|
    puts e.title

    if options[:content]
      if options[:content].zero?
        puts e.content.to_s
      else
        puts e.content.to_s.split(' ')[0,options[:content]].join(' ')
      end
    end

    puts
  end
end