#!/usr/bin/env ruby

lib = File.expand_path(File.dirname(__FILE__) + '/../lib')
$LOAD_PATH.unshift(lib) if File.directory?(lib) && !$LOAD_PATH.include?(lib)

require 'rubygems'
require 'optparse'
require 'docify'

# ------------------------------------------------------------------------------
# Default options
# ------------------------------------------------------------------------------

options = {
  :format  => nil,   # Render format
  :output  => nil,   # Output filename
  :use_css => true   # Embedded CSS support
}

# ------------------------------------------------------------------------------
# Setup OptParser
# ------------------------------------------------------------------------------

optparse = OptionParser.new do |opts|
  opts.banner = "Usage: docify [options] FILE"
  opts.on('-l', '--list', 'List of all formats') do
    puts "Formats:"
    Docify::FORMATS.each { |f| puts "- #{f}" }
    exit
  end
  opts.on('-f', '--format FORMAT', 'Render as format') do |f|
    unless Docify.valid_format?(f)
      puts "Invalid format!" ; exit
    end
    options[:format] = f
  end
  opts.on('--no-css', 'Disable css styling') { options[:use_css] = false }
  opts.on('-o', '--output=PATH', 'Output file path') do |path|
    options[:output] = path
  end
  opts.on('-h', '--help', "Show this information") { puts opts.to_s ; exit }
end

# ------------------------------------------------------------------------------
# Execute
# ------------------------------------------------------------------------------

begin
  optparse.parse!
  file = ARGV.shift.to_s.strip
  unless file.empty?
    file = File.expand_path(file)
    
    begin
      options[:format] = Docify.detect_format(file)
      doc = Docify::Document.new(file)
      doc.render(options[:format], options[:use_css])
      if options[:output].nil?
        puts doc.content
      else
        doc.save_to(options[:output])
      end
    rescue ArgumentError => e
      puts "Error: #{e.message}"
      exit
    rescue Exception => e
      puts "Error: #{e.message}"
      exit
    end
  else
    puts optparse.to_s
    exit
  end
rescue
  puts optparse.to_s
  exit
end