require 'rubygems' unless defined?(Gem)

module Vmpooler
  require 'date'
  require 'json'
  require 'open-uri'
  require 'rbvmomi'
  require 'redis'
  require 'sinatra/base'
  require 'time'
  require 'timeout'
  require 'yaml'

  %w( api graphite logger pool_manager vsphere_helper ).each do |lib|
    begin
      require "vmpooler/#{lib}"
    rescue LoadError
      require File.expand_path(File.join(File.dirname(__FILE__), 'vmpooler', lib))
    end
  end

  def self.config(filepath='vmpooler.yaml')
    # Load the configuration file
    config_file = File.expand_path(filepath)
    parsed_config = YAML.load_file(config_file)

    # Set some defaults
    parsed_config[:redis]             ||= {}
    parsed_config[:redis]['server']   ||= 'localhost'
    parsed_config[:redis]['data_ttl'] ||= 168

    parsed_config[:config]['task_limit']   ||= 10
    parsed_config[:config]['vm_checktime'] ||= 15
    parsed_config[:config]['vm_lifetime']  ||= 24

    if parsed_config[:graphite]['server']
      parsed_config[:graphite]['prefix'] ||= 'vmpooler'
    end

    parsed_config[:uptime] = Time.now

    parsed_config
  end

  def self.new_redis(host='localhost')
    Redis.new(host: host)
  end

  def self.new_logger(logfile)
    Vmpooler::Logger.new logfile
  end

  def self.new_graphite(server)
    if server.nil? or server.empty? or server.length == 0
      nil
    else
      Vmpooler::Graphite.new server
    end
  end

  def self.pools(conf)
    conf[:pools]
  end
end