require 'rbconfig'

class InstallWebsiteGenerator < RubiGen::Base

  DEFAULT_SHEBANG = File.join(Config::CONFIG['bindir'],
                              Config::CONFIG['ruby_install_name'])
  
  default_options :shebang => DEFAULT_SHEBANG,
                  :author  => "TODO",
                  :email   => "TODO",
                  :theme   => 'plain_theme'
  
  attr_reader :gem_name, :module_name
  attr_reader :author, :email, :theme
  
  def initialize(runtime_args, runtime_options = {})
    super
    @destination_root = File.expand_path(destination_root)
    @gem_name = base_name
    
    @module_name  = @gem_name.camelcase
    extract_options
  end

  def manifest
    script_options     = { :chmod => 0755, :shebang => options[:shebang] == DEFAULT_SHEBANG ? nil : options[:shebang] }
    windows            = (RUBY_PLATFORM =~ /dos|win32|cygwin/i) || (RUBY_PLATFORM =~ /(:?mswin|mingw)/)

    record do |m|
      # Ensure appropriate folder(s) exists
      m.directory 'website/javascripts'
      m.directory 'website/stylesheets'
      m.directory 'script'
      m.directory 'tasks'

      # Website
      m.template_copy_each %w( index.txt index.html ), "website"
      
      %w( txt2html ).each do |file|
        m.template "script/#{file}",        "script/#{file}", script_options
        m.template "script/win_script.cmd", "script/#{file}.cmd", 
          :assigns => { :filename => file } if windows
      end
      
      m.file_copy_each %w[ website.rake ], "tasks"
      
      m.dependency theme, [], :destination => destination_root
    end
  end

  protected
    def banner
      <<-EOS
Adds a website to a RubyGem (or any other project I guess.)

USAGE: #{$0} [options]
EOS
    end

    def add_options!(opts)
      opts.separator ''
      opts.separator 'Options:'
      # For each option below, place the default
      # at the top of the file next to "default_options"
      opts.on("-a", "--author=\"Your Name\"", String,
              "You. The author of this RubyGem. You name goes in in the website.",
              "Default: 'TODO'") { |x| options[:author] = x }
      opts.on("-e", "--email=your@email.com", String,
              "Your email for people to contact you.",
              "Default: nil") { |x| options[:author] = x }
      opts.on("-T", "--theme=theme_name", String,
              "Theme generator to use",
              "Default: plain_theme") { |x| options[:theme] = x }
    end
    
    def extract_options
      # for each option, extract it into a local variable (and create an "attr_reader :author" at the top)
      # Templates can access these value via the attr_reader-generated methods, but not the
      # raw instance variable value.
      @author = options[:author]
      @email  = options[:email]
      @theme  = options[:theme]
    end
end