module Platformx

  #
  # Date helpers module
  # @author Tim Mushen
  #
  module DateHelpers

    # Get the time in words
    # @param date [String] a string representation of the date
    # @return [String] time in words
    def x_time_in_words(date: "")
        date = date.to_date
        date = Date.parse(date, true) unless /Date.*/ =~ date.class.to_s
        days = (date - Date.today).to_i
        return 'Today' if days >= 0 and days < 1
        return 'Tomorrow' if days >= 1 and days < 2
        return 'Yesterday' if days >= -1 and days < 0
        return "In #{days} days" if days.abs < 60 and days > 0
        return "#{days.abs} days ago" if days.abs < 60 and days < 0
        return date.strftime('%A, %B %e, %Y') if days.abs < 182
        return date.strftime('%A, %B %e, %Y')
    end

    # Returns relative time in words referencing the given date
    # @param from_time [Time] the from time
    # @return [String] a 'time ago' representation for the given time
    # @example
    #   relative_time_ago(Time.now) # => 'about a minute ago'
    def x_relative_time_ago(from_time: "")
      distance_in_minutes = (((Time.now - from_time.to_time).abs)/60).round

      case distance_in_minutes
      when 0..1 then 'A minute ago'
      when 2..44 then "#{distance_in_minutes} minutes ago"
      when 45..89 then '1 hour ago'
      when 90..1439 then "#{(distance_in_minutes.to_f / 60.0).round} hours ago"
      when 1440..2439 then '1 day ago'
      when 2440..2879 then '2 days ago'
      when 2880..43199 then "#{(distance_in_minutes / 1440).round} days ago"
      when 43200..86399 then 'About 1 month ago'
      when 86400..525599 then "#{(distance_in_minutes / 43200).round} months ago"
      when 525600..1051199 then 'About 1 year ago'
      else "Over #{(distance_in_minutes / 525600).round} years ago"
      end
    end

    # Formats the date
    # @param date [Time] date representation in the format %A, %B %d, %Y
    # @param show_time [Boolean] if the timme should be incldued
    # @param show_month [Boolean] if teh month should be included
    # @return [String] formated representation of the given date
    def x_format_date(date: "", show_time: false, show_month: true, format: "long")    
      if date.nil?
        return ""
      else


        if format == "mdy"
          time = date.strftime("%m-%d-%Y")
        elsif format == "d-m-y"
          time = date.strftime("%d-%m-%Y")
        elsif format == "m/d/y"
          time = date.strftime("%D")
        else
          # Long format
          time = date.strftime("%A, %B %d, %Y") 
        end 
        
        # Show time
        if show_time == true
          time = time + date.strftime(" %l:%M %p")
        end

        # Return time
        return time
      end
    end

    # Format date time
    # @param date [Time] the date-time to be formatted
    # @return [String] the formatted date
    def x_format_datetime(date: "") 
      if date.nil?
        return ""
      else
        time = date.strftime("%A, %B %d, %Y %l:%M %p")
        return time
      end
    end

    # Format time
    # @param time [Time] the time to be formatted
    # @return [String] formatted time
    def x_format_time(time: "")
      if time.nil?
        return ""
      else
        time = time.strftime("%l:%M %p")
        return time
      end
    end

    # Short date with format %A, %-m-%d-%y
    # @param datevar [Time | Date] date or time to be formatted
    # @return [String] formatted date/time
    def x_short_date(datevar: "")
      return datevar.strftime("%A, %-m-%d-%y") unless datevar.nil?
    end

  end
end