require 'socket'
require 'yaml/store'

config = YAML::Store.new "config.store"
config.transaction do
  $name = config["name"]
  $password = config["password"]
  $host = config["host"]
  $port = config["port"]
end

def connect(host, port)
  $sock = TCPSocket.new(host, port)
  # join($name,$password)
  while line = $sock.gets
    puts line
    parse(line)
  end
end

def join(name, password)
  send("join", name, password)
end

def parse(message)
  parts = message.split('|')
  case parts[0].strip
  when "error"
    puts "error occured " + parts[1]

  when "game"
    $gameW = parts[1].to_i
    $gameH = parts[2].to_i
    $id = parts[3].to_i
    initmap()
  when "pos"
    $map[parts[2].to_i][parts[3].to_i] = parts[1].to_i
    # puts $map
    if parts[1].to_i === $id
      # store our position
      $myX = parts[2].to_i
      $myY = parts[3].to_i
    end
  when "tick"
    decide()
  when "die"
    parts.drop(1).each { |player| cleanup(player) }
  when "message"

  when "win", "lose"
    reset()
  when "motd"
    join($name, $password)
  end

end

def cleanup(player)
  id = player.to_i
  puts "Removing tiles from player ##{id}"
  $dead.append(id)
  # $map.each { |row| row.each { |element| if element == id then element = -1 end}}

end

$tries = 0
def check_front

  # puts "#{$direction} at #{$myX},#{$myY} - try: #{$tries}"
  case $direction
  when "up"
    value = $map[overflow($myX, $gameW)][overflow($myY - 1, $gameH)]
  when "down"
    value = $map[overflow($myX, $gameW)][overflow($myY + 1, $gameH)]
  when "left"
    value = $map[overflow($myX - 1, $gameW)][overflow($myY, $gameH)]
  when "right"
    value = $map[overflow($myX + 1, $gameW)][overflow($myY, $gameH)]
  end
  $tries = $tries + 1
  puts "check_front: #{value}"
  return value
end

def overflow(new, max)
  if new >= max
    return 0
  end
  if new < 0
    return max - 1
  end
  new
end

def new_direction
  case $direction
  when "up"
    "right"
  when "down"
    "left"
  when "left"
    "up"
  when "right"
    "down"
  end
end

def decide()

  $tries = 0
  while check_front > -1 && !$dead.include?(check_front)
    $direction = new_direction()
    if $tries > 4
      break
    end
  end

  send("move", $direction)
end

def chat(message)
  send("chat", message)
end

def reset() end

def send(msg, *param)

  if param.length > 0
    snd = "#{msg}|#{param.join("|")}"
  else
    snd = msg
  end
  $sock.puts(snd)
  puts(snd)
end

def initmap()
  $map = Array.new($gameH) { Array.new($gameW) { -1 } }
  $direction = "up"
  $dead = Array.new(0)

  chat("Rock and Stone!")
end



connect($host, $port)