#!/usr/bin/env ruby
# vim:set filetype=ruby:

require "pathname"
require "optparse"

options = { :interactive => false }

parser = OptionParser.new do |opts|
  opts.banner = "Usage: akephalos [--interactive, --use-htmlunit-snapshot] | [--server] <socket_file>"
  opts.on("-s", "--server", "Run in server mode (default)")
  opts.on("-i", "--interactive", "Run in interactive mode") { options[:interactive] = true }
  opts.on("--use-htmlunit-snapshot", "Use the snapshot of htmlunit") { options[:use_htmlunit_snapshot] = true }

  opts.on_tail("-h", "--help", "Show this message") { puts opts; exit }
end
parser.parse!

root = Pathname(__FILE__).expand_path.dirname.parent
lib = root + 'lib'
src = root + 'src'

case
when options[:use_htmlunit_snapshot]
  require "fileutils"

  FileUtils.mkdir_p("vendor/htmlunit")
  Dir["vendor/htmlunit/*.jar"].each { |jar| File.unlink(jar) }

  Dir.chdir("vendor") do
    $stdout.print "Downloading latest snapshot... "
    $stdout.flush
    %x[curl -O http://build.canoo.com/htmlunit/artifacts/htmlunit-2.8-SNAPSHOT-with-dependencies.zip &> /dev/null]
    puts "done"

    $stdout.print "Extracting dependencies... "
    $stdout.flush
    %x[unzip -j -d htmlunit htmlunit-2.8-SNAPSHOT-with-dependencies.zip htmlunit-2.8-SNAPSHOT/lib htmlunit-2.8-SNAPSHOT/lib/* &> /dev/null]
    puts "done"

    File.unlink "htmlunit-2.8-SNAPSHOT-with-dependencies.zip"
  end

  $stdout.puts "="*40
  $stdout.puts "The latest HtmlUnit snapshot has been extracted to vendor/htmlunit!"
when options[:interactive]
  $:.unshift('vendor', lib, src)
  require 'rubygems'
  require 'akephalos'
  require 'akephalos/console'
  Akephalos::Console.start
else
  unless socket_file = ARGV[0]
    puts parser.help
    exit
  end

  if RUBY_PLATFORM == "java"
    $:.unshift("vendor", lib, src)
    require 'akephalos/server'
    Akephalos::Server.start!(socket_file)
  else
    require 'rubygems'
    require 'jruby-jars'

    jruby = JRubyJars.core_jar_path
    jruby_stdlib = JRubyJars.stdlib_jar_path

    java_args = [
      "-Xmx128M",
      "-cp", [JRubyJars.core_jar_path, JRubyJars.stdlib_jar_path].join(":"),
      "org.jruby.Main"
    ]
    ruby_args = [
      "-I", "vendor:#{lib}:#{src}",
      "-r", "akephalos/server",
      "-e", "Akephalos::Server.start!(#{socket_file.inspect})"
    ]

    # Bundler sets ENV["RUBYOPT"] to automatically load bundler/setup.rb, but
    # since the akephalos server doesn't have any gem dependencies and is
    # always executed with the same context, we clear RUBYOPT before running
    # exec.
    ENV["RUBYOPT"] = ""
    exec("java", *(java_args + ruby_args))
  end
end