require './common.rb'
require './module.rb'
require './server.rb'

require 'yaml'

module Vrobot4
   private

   # Loads a bot from its configuration +botinfo+.
   # @param botinfo [Hash] arbitrary bot information
   #  ["type"] The type by name of the bot.
   # @return [Vrobot4::Server] the loaded bot
   def self.load_bot botinfo
      type = botinfo["type"]
      serv = Server::get_server_type(type).new botinfo

      for mod in botinfo["modules"] do
         serv.load_mod mod
      end

      serv
   end

   # Runs all bots in +bots+ in separate threads.
   # @param bots [Array<Vrobot4::Server>] all bots to run
   # @return [void]
   def self.run_bots bots
      threads = []

      bots.each do |server|
         threads << Thread.new do
            server.connect
         end
      end

      threads.each do |thread|
         thread.join
      end
   end

   public

   # Runs the program.
   # @param cfg [IO] configuration file to read
   # @return [void]
   def self.main cfg
      Thread.abort_on_exception = true

      log :INFO, "vrobot version #{Version}"

      begin
         cfg = YAML.load cfg.read
      rescue
         log :ERROR, "error reading bot config: #{$!}"
         return
      end

      Vrobot4.set_debug(cfg["debug"] || 0)

      cfg["load"].each do |mod|
         load mod, true
      end

      begin
         bots = []

         cfg["bots"].each do |botinfo|
            bots << load_bot(botinfo)
         end

         log :DEBUGV, "bots: #{bots.to_s}"
      rescue
         err =  $!.to_s + ?\n + $!.backtrace.first(3).join(?\n)
         log :ERROR, "error loading bot config: #{err}"
         return
      end

      run_bots bots
   end
end

Vrobot4.main open ARGV[0]

## EOF