#!/usr/bin/env ruby

require 'less'

compress = false
yuicompress = false

options = {
  :paths => [],
  :strictImports => false,
  :silent => false,
  :optimization => 1
}

output = nil

require 'optparse'

opts = OptionParser.new do |opts|
  opts.summary_width = 37

  opts.banner = 'Usage: lessc [options] [INPUT]'
  
  opts.on('-h', '--help', 'print this help') do
    puts opts
    exit
  end
  
  opts.on('-v', '--version', 'print version') do
    puts("lessc #{Less['version'].join('.')} (LESS Compiler) [Ruby] #{Less::VERSION}")
    exit(0)
  end

  opts.on('-s', '--silent') do
    options[:silent] = true
  end

  opts.on('--strict-imports') do
    options[:strictImports] = true
  end

  opts.on('-x', '--compress') do
    compress = true
  end

  opts.on('--yui-compress') do
    yuicompress = true
  end

  opts.on('--no-color') do
    options[:color] = false
  end

  require 'rbconfig'
  is_windows = (RbConfig::CONFIG['host_os'] =~ /mswin|mingw|cygwin/)
  separator = is_windows ? ';' : ':'
  opts.on('--paths PATHS', '--include-path PATHS',
    "paths to include separated by '#{separator}'") do |paths|
    paths = paths.split(separator).map do |path|
      path.empty? ? nil : File.expand_path(path)
    end
    options[:paths] = paths.compact
  end
     
  # NOTE: not present in JS version, has: --00, --01 and --02
  opts.on('--optimization [0, 1 or 2]', "default: 1") do |num|
    options[:optimization] = (num || 1).to_i
  end
  
  [0, 1, 2].each do |num| # --00 --01 --02
    opts.on("--0#{num}", "optimization: #{num}") do
      options[:optimization] = num
    end
  end
  
  # NOTE: not present in JS version, does [INPUT] [OUTPUT]
  #opts.on('--output file', "specify an output path") do |path|
  #  output = File.expand_path(path)
  #end
  
end

opts.parse! ARGV

if ARGV.empty?
  puts("lessc: no input files")
  exit(1)
end

if ARGV.size == 1
  options[:filename] = ARGV.first
end

ARGV.each do |path|
  options[:paths].unshift File.dirname(path)
end
options[:paths].uniq!

parser = Less::Parser.new(options)
tree = parser.parse(ARGF.read)
css = tree.to_css(:compress => compress, :yuicompress => yuicompress)

puts css # we do not support [INPUT] [OUTPUT] as the JS version does