# Some use case of OpenClass feature; Added color methods to String class

openclass_use_case.rb

# Some use case of OpenClass feature
def red(string)
  color_code = 31
  "\e[#{color_code}m#{string}\e[0m"
end

def blue(string)
  color_code = 34
  "\e[#{color_code}m#{string}\e[0m"
end

def pink(string)
  color_code = 35
  "\e[#{color_code}m#{string}\e[0m"
end

def log(message, type: 'info')
  if type == 'error'
    puts red(message) 
  elsif type == 'warning'
    puts pink(message)
  elsif type == 'info'
    puts blue(message)
  end
end

log("Something bad happened", type: 'error')
log("Something bad might happened", type: 'warning')
log("Something good just happened!")
  
# ----------------------------------------------------------------------------------------
# Problem in this code is, this is not so Object oriented
#  and its not that easy to use otherwise it could be.

class String
  def red
    color_code = 31
    "\e[#{color_code}m#{self}\e[0m"
  end

  def blue
    color_code = 34
    "\e[#{color_code}m#{self}\e[0m"
  end

  def pink
    color_code = 35
    "\e[#{color_code}m#{self}\e[0m"
  end
end

class MyLogger
  def log(message, type: 'info')
    if type == 'error'
      $stderr.puts message.red
    elsif type == 'warning'
      $stdout.puts message.pink
    elsif type == 'info'
      $stdout.puts message.blue
    end
  end
end

logger = MyLogger.new
logger.log("Something bad happened", type: 'error')
logger.log("Something bad might happened", type: 'warning')
logger.log("Something good just happened!")