#!/usr/bin/env ruby

require 'optparse'

options = {
  :border => 3,
  :margin => 1,
  :character => '='
}

parser = OptionParser.new do |opt|
  opt.banner = "Usage: box [OPTIONS] WORDS"

  opt.on("-c", "--border-character", :REQUIRED, "Border character (default: =)") do |c|
    options[:character] = c
  end
  opt.on("-b", "--border-width", :REQUIRED, "Left and right border width (default: 3)") do |b|
    options[:border] = b.to_i
  end
  opt.on("-m", "--margin-width", :REQUIRED, "Left and right margin width (default: 1)") do |m|
    options[:margin] = m.to_i
  end
  opt.on("-h", "--help", "Print usage") do
    puts opt.banner
    puts opt.summarize
    exit 0
  end
end

parser.parse!

if ARGV.length <= 0 then
  exit
end

input = ARGV.join(' ').chomp

len = input.length + 2 * options[:border] + 2 * options[:margin]

puts options[:character] * len
puts options[:character] * options[:border] +
      " " * options[:margin] +
      input +
      " " * options[:margin] +
      options[:character] * options[:border]
puts options[:character] * len