#!/usr/bin/env ruby

# Try to load external libs, helpers and constants
begin
  require "rubygems"
  require "optparse"
  require 'daemons'
  require_relative "../lib/pushyd/conf"
rescue LoadError => e
  raise "EXITING: some basic libs were not found (#{e.message})"
end


# Handle configuration
begin
  # Defaults
  cmd_config = nil
  cmd_logfile = nil

  # Init Chamber-based configuration from Gemspec
  Conf.init File.dirname(__FILE__) + "/../"
  Conf.app_env = "production"

  # Parse options and check compliance
  OptionParser.new do |opts|
    opts.banner = "Usage: #{File.basename $PROGRAM_NAME} [options] start|stop"
    opts.on("-l", "--log LOGFILE")           { |path| cmd_logfile = File.expand_path(path)}
    opts.on("-c", "--config CONFIGFILE")     { |path| cmd_config = File.expand_path(path)}
    opts.on("-e", "--environment ENV")       { |env| Conf.app_env = env }
    opts.on("",   "--dev")                   { Conf.app_env = "development" }
  end.order!(ARGV)

  # Load Chamber-based configuration
  Conf.prepare config: cmd_config, logfile: cmd_logfile

  # Override log file
  Conf[:log] ||= {}
  Conf[:log][:file] = cmd_logfile.to_s if cmd_logfile

rescue OptionParser::InvalidOption => e
  abort "EXITING: InvalidOption: #{e.message} \n #{e.backtrace.to_yaml}"
rescue ConfigParseError => e
  abort "EXITING: ConfigParseError: #{e.message} \n #{e.backtrace.to_yaml}"
rescue StandardError => e
  abort "EXITING: StandardError: #{e.message} \n #{e.backtrace.to_yaml}"
else
end

# Display final configuration, quit if config dump requested
puts "--- #{Conf.app_name} #{Conf.app_ver}"
puts "Environment    \t #{Conf.app_env}"
puts "Config files   \t #{Conf.files}"
puts "Started at      \t #{Conf.app_started}"
puts "Loging to file \t #{Conf[:log][:file]}" if Conf[:log].is_a? Enumerable
puts
puts Conf.dump

# Run daemon
run_options = {
  ontop: false,
  :backtrace  => true,
  :multiple   => false
  }
Daemons.run_proc('pushy-daemon', run_options) do
  # Load code
  puts "--- load code"
  require_relative "../lib/pushyd"

  # Start daemon
  puts "--- start daemon"
  PushyDaemon::Daemon.run
end