#!/usr/bin/env ruby

# This is the main skynet starter script.
# It can be used to start the skynet_tuplespace_server as well as all skynet workers.
# It is important that this script has access to your code. If you want to run
# skynet within your code you'll want to read about bin/skynet_install[link:files/bin/skynet_install.html]
#
# Usage: skynet [options]
#     -w, --workers WORKERS            Number of workers to start.  The default is 4 and is stored in Skynet::CONFIG[:NUMBER_OF_WORKERS]
#     -i, --increment-worker-version   Increment Worker Version
#     -a, --add-workers WORKERS        Number of workers to add.
#     -k, --remove-workers WORKERS     Number of workers to remove.
#     -r, --required LIBRARY           Require the specified libraries
#         --restart-all-workers        Restart All Workers                                      
#         --restart-workers            Restart Workers                                      
#
# If you have chosen to use the TupleSpace message queue adapter this script will see if there is an available TS first
# and start one if there is not.  You can also start the bin/skynet_tuplespace_server[link:files/bin/skynet_tuplespace_server.html] manually.  
#
# Running skynet starts a Skynet::Manager which in turn spawns the Skynet::Worker processes with the appropriate options.
# You only need to run skynet once per machine.  If you want to add more workers, use the appropriate flags above to do so.
# Only one manager should be running per machine.  The Skynet::Manager does not dole out tasks
#
# You should set all of your Skynet::CONFIG (or Skynet.configure()) options here (or in one of your environment files.)
# See Skynet::Config for more information on configuration options.

require 'rubygems'
require File.expand_path(File.dirname(__FILE__)) + '/../lib/skynet.rb'


if config_arg = ARGV.detect {|i| i =~ /--help/ }
  Skynet.start
  exit
end

conf_file = nil
if config_arg = ARGV.detect {|i| i =~ /--config/i }
  conf_file = config_arg.split('=').last
  ARGV.delete_if {|i| i =~ /--config/ }  
else
  ['config/skynet_config.rb', 'skynet_config.rb', "../config/skynet_config.rb" , "#{ENV['HOME']}/.skynet/config.rb"].each do |path|
    if File.exists?(path)
      conf_file = path
      break
    end
  end
end

if conf_file
  Skynet::CONFIG[:CONFIG_FILE]      = File.expand_path(conf_file)
  Skynet::CONFIG[:APP_ROOT]         = File.dirname(Skynet::CONFIG[:CONFIG_FILE])
  Skynet::CONFIG[:SKYNET_LOG_DIR]   = File.expand_path(Skynet::CONFIG[:APP_ROOT]+ "/../log")
  Skynet::CONFIG[:SKYNET_PID_DIR]   = File.expand_path(Skynet::CONFIG[:APP_ROOT] + "/../log")
  begin
    require conf_file
  rescue MissingSourceFile => e
    puts "Specified config file #{conf_file} is missing."
    exit
  end
  puts "using config file: #{File.expand_path(conf_file)}" unless conf_file == 'config/skynet_config.rb'
else
  puts "No configuration file found.\nTry running skynet_install to create a config/skynet_config.rb or starting skynet with --config=CONFIG_FILE_LOCATION.  Exiting."
  exit
end

Skynet::CONFIG[:WORKER_CHECK_DELAY]     ||= 4
Skynet::CONFIG[:LAUNCHER_PATH]          = File.expand_path(__FILE__)

Skynet::CONFIG[:SYSTEM_RUNNER] = true

Skynet.start