IRB

.irbrc

IRB.conf[:SAVE_HISTORY] = 2000
IRB.conf[:HISTORY_FILE] = '~/.irb-history'

def app_prompt
  rails_klass = Rails.application.class

  app_name =
    if rails_klass.respond_to? :module_parent
      rails_klass.module_parent
    else
      rails_klass.parent
    end

  "\033[1;34m#{app_name.name}\033[0m"
end

# target log path for irb history
def log_path
  rails_root = Rails.root
  "#{rails_root}/log/.irb-save-history"
end

def env_prompt
  case Rails.env
  when "development"
    "\033[0;32mdevelopment\033[0m"
  when "production"
    "\033[0;31mproduction\033[0m"
  else
    "\033[0;33m#{Rails.env}\033[0m"
  end
end

if defined?(Rails)
  IRB.conf[:HISTORY_FILE] = FileUtils.touch(log_path).join
  IRB.conf[:PROMPT] ||= {}

  prompt = "#{app_prompt}[#{env_prompt}]:%03n "

  IRB.conf[:PROMPT][:RAILS_EMOJI] = {
    :PROMPT_I => "#{prompt}\u{1F601} > ",
    :PROMPT_N => "#{prompt}\u{1F609} > ",
    :PROMPT_S => "#{prompt}\u{1F606} > ",
    :PROMPT_C => "#{prompt}\u{1F605} > ",
    :RETURN   => "  => %s\n"
  }

  IRB.conf[:PROMPT_MODE] = :RAILS_EMOJI
end