module DistanceReturn

# File lib/distance_return.rb, line 15
def expand_route(text)
  text = text.to_s.strip
  return { error: usage_message } if text.empty?

  home_token, via = text.split(/\s+/, 2)
  return { error: usage_message } if via.to_s.strip.empty?

  home = HOME_ALIASES[home_token.to_s.downcase]
  return { error: usage_message } unless home

  { route_text: "#{home} to #{home} via #{via.strip}" }
end

# File lib/distance_return.rb, line 11
def usage_message
  'Usage: !return <home> <via> — e.g. !return blackbut kilkoy'
end