#!/usr/bin/env ruby

require File.dirname(__FILE__) + '/../lib/nanoc.rb'

require 'getoptlong'

try_require 'rubygems'

# Define some texts
version_text = "nanoc #{Nanoc::VERSION} (c) 2007 Denis Defreyne."
usage_text   = "Usage: nanoc [options] [command] [parameters]"
help_text    = <<EOT
Usage: nanoc [-chv]
       nanoc create_site <name>
       nanoc create_page <name> [-t template]
       nanoc create_template <name>
       nanoc compile

Options:
    -h, --help        Show this help message and quit.
    -v, --version     Show the nanoc version number and quit.
    -t, --template    Template that should be used when creating a page.
                      (can only be used with create_page)

Description:
    The 'nanoc' command is used for creating nanoc-powered sites, as well as
    managing them: creating pages and templates and compiling the site.

    Read more about nanoc on the site: <http://nanoc.stoneship.org/>
EOT

# Parse options
opts = GetoptLong.new(
  [ '--help',       '-h', GetoptLong::NO_ARGUMENT ],
  [ '--template',   '-t', GetoptLong::REQUIRED_ARGUMENT ],
  [ '--version',    '-v', GetoptLong::NO_ARGUMENT ]
)
unprocessed_opts = {}
begin
  opts.each do |opt, arg|
    case opt
    when '--help'
      $stderr.puts help_text
      exit
    when '--version'
      puts version_text
      exit
    else
      unprocessed_opts[opt] = arg
    end
  end
rescue GetoptLong::InvalidOption
  $stderr.puts usage_text
  exit
end

# Make sure we have at least one argument
if ARGV.size == 0
  $stderr.puts usage_text
  exit
end

# Handle command
command = ARGV[0]
case command
  # Create site
  when 'create_site', 'cs'
    if ARGV.size != 2
      $stderr.puts 'Usage: nanoc create_site [site_name]'
      exit
    end
    $nanoc_creator.create_site(ARGV[1])

  # Create page
  when 'create_page', 'cp'
    if ARGV.size != 2
      $stderr.puts 'Usage: nanoc create_page [page_name]'
      exit
    end
    $nanoc_creator.create_page(ARGV[1], :template => unprocessed_opts['--template'])

  # Create template
  when 'create_template', 'ct'
    if ARGV.size != 2
      $stderr.puts 'Usage: nanoc create_template [template_name]'
      exit
    end
    $nanoc_creator.create_template(ARGV[1])

  # Process site and generate output
  when 'compile', 'compile_site', 'co'
    if ARGV.size != 1
      $stderr.puts 'Usage: nanoc compile'
      exit
    end
    $nanoc_compiler.run

  else
    puts 'Unrecognised command \'' + command + '\''
end