#!/usr/bin/env ruby            
require 'optparse'
require 'ostruct'
require 'fileutils'

require File.expand_path( File.join(File.dirname(__FILE__), '..', 'lib', 'ziya') )
    
# TODO - Use main
module Ziya
  class Ziyafy  
    # Copy necessary ZiYa components to a ruby web application
    def initialize( argv=ARGV ) 
      option_parser = default_option_parser 
      option_parser.parse!(argv)
      copy_artifacts
    end                  
          
    # copies ziya artifacts to public app directory
    def copy_artifacts
      %w[charts gauges maps].each do |s|
        if options.send( s ) 
          dest_dir = File.join( options.public_dir )
          src_dir  = File.expand_path( File.join( File.dirname(__FILE__), %w[.. resources], s ) )
          puts "Installing ZiYa artifacts in `#{dest_dir}"        
          FileUtils.cp_r( src_dir, dest_dir )
         end
      end          
    end
    
    # access the options
    def options  #:nodoc:
      if not @options then      
        @options = OpenStruct.new 
        # Unless specified copy artifacts to the public directory
        @options.public_dir = File.join( Dir.pwd, %w[public] )
        @options.charts     = false
        @options.gauges     = false
        @options.maps       = false
      end
      return @options
    end

    # sets up cmd line args
    def default_option_parser #:nodoc:
      OptionParser.new do |op|
        op.separator ""
        op.separator "ziyafy options:"

        op.on( "-c", "--charts", "Copy ZiYa charts artifacts only" ) do |dir|
          options.charts = true
        end

        op.on( "-g", "--gauges", "Copy ZiYa gauges artifacts only" ) do |dir|
          options.gauges = true
        end

        op.on( "-m", "--maps", "Copy ZiYa maps artifacts only" ) do |dir|
          options.maps = true
        end

        op.on( "-a", "--all", "Copy all ZiYa artifacts" ) do |dir|
          options.charts = true
          options.gauges = true
          options.maps   = true
        end

        op.on( "-p", "--public_dir FILE", "The location of the public app directory." ) do |dir|
          options.public_dir = dir
        end
        op.separator ""
      end
    end   
  end
end  

Ziya::Ziyafy.new(ARGV)