proximity.rb

class Date
  def to_words
    today = Date.today
    
    case self
    when today
      "Today"
    when today - 1
      "Yesterday"
    when today + 1
      "Tomorrow"
    when (today - 7)..(today - 1)
      "Last #{strftime("%A")}"
    when (today + 1)..(today + 7)
      "Next #{strftime("%A")}"
    when (today + 8)..(today + 14)
      "Two #{strftime("%A")}s away"
    when (today - 14)..(today - 8)
      "Two #{strftime("%A")}s ago"
    when (today + 15)..(today + 21)
      "Three #{strftime("%A")}s away"
    when (today - 21)..(today - 15)
      "Three #{strftime("%A")}s ago"
    when (today + 22)..(today + 29)
      "Four #{strftime("%A")}s away"
    when (today - 29)..(today - 22)
      "Four #{strftime("%A")}s ago"
    else
      if today - 30 > self
        "More than a month ago"
      else
        "More than a month in the future"
      end
    end 
  end
end