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

require 'stringio'
require 'yaml'
require 'liars'

conf = OpenStruct.new(:host => '0.0.0.0', :port => 2008, :db => Liars::DbEngine.db_name)

if conf.rc and File.exists?( conf.rc )
  YAML.load_file(conf.rc).each do |k,v|
    conf.send("#{k}=", v)
  end 
end

opts = OptionParser.new do |opts|
  opts.banner = "Liars, a tiny MVC web framework. "
  # opts.define_head "Ruby #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}) [#{RUBY_PLATFORM}]"
  opts.separator "usage: liars -s test.rb && liars test.rb"
  opts.separator "see http://github.com/luonet/liars for more details"
  opts.separator ""
  opts.separator "options:"

  opts.on("-h", "--host HOSTNAME", "web server host name(default #{conf.host})") { |conf.host| }
  opts.on("-p", "--port NUM", "Web server binding port(default #{conf.port})") { |conf.port| }
  opts.on("-d", "--database FILE", "database file (default #{conf.db})") { |conf.db| }
  opts.on("-c", "--console", "running in irb mode") { conf.server = :console }
  opts.on("-s", "--scaffold FILE", "generates a scaffold file") do |conf.scaffold|
    conf.scaffold =~ /^(\w+)(\.rb)?$/
    File.open("#{Dir.pwd}/#{$1}.rb", 'w') do |f|
      class_name = $1.singularize.camelize
      f.puts <<-EOF
module Liars
  # Model ======================================================================
  class #{class_name} < M
  end

  # Controller =================================================================
  class #{class_name}C < C
    route_of :index, '/'
    def index
      render
    end
  end

  # View =======================================================================
  class #{class_name}V < V
    def layout
      html do
    	head { title 'Liars never tell lies!' }
    	body do
          yield
    	end
      end
    end  
    
    def index
      h1 { a '#{class_name}', :href => "/" }
    end
  end
end
      EOF
    end
    puts "template #{$1}.rb generated"
    exit
  end

  opts.separator ""
  opts.separator "other options:"
  
  opts.on_tail("-?", "--help", "show help messages") do
    puts opts
    exit
  end
  
  opts.on_tail("-v", "--version", "show version") do
    class << Gem; attr_accessor :loaded_specs; end
    puts Gem.loaded_specs['liars'].version
    exit
  end
end

opts.parse! ARGV
if ARGV.length < 1
  puts opts
  exit
else
  ARGV.each {|f| require "#{Dir.pwd}/#{f}" }
end

if conf.server == :console
  ARGV.clear
  require 'irb' 
  require 'irb/completion' 
  ENV['IRBRC'] = ".irbrc" if File.exists? ".irbrc"
  IRB.start 
else
  Liars::DbEngine.db_name = conf.db
  Liars::DbEngine.create_db

  # Mount the root
  s = WEBrick::HTTPServer.new(:BindAddress => conf.host, :Port => conf.port)
  s.mount "/", Liars::LiarsHandler, Liars::C

  # Server up
  trap(:INT) do
    s.shutdown
    Liars::DbEngine.write_db
  end
  s.start
end