Contents

# frozen_string_literal: true

require 'rubygems'
require 'active_support/all'

module Timely
  class TimeDifference
    private_class_method :new

    TIME_COMPONENTS = %i[years months weeks days hours minutes seconds].freeze

    def self.between(start_time, end_time)
      new(start_time, end_time)
    end

    def in_years
      in_component(:years)
    end

    def in_months
      (@time_diff / (1.day * 30.42)).round(2)
    end

    def in_weeks
      in_component(:weeks)
    end

    def in_days
      in_component(:days)
    end

    def in_hours
      in_component(:hours)
    end

    def in_minutes
      in_component(:minutes)
    end

    def in_seconds
      @time_diff
    end

    def in_each_component
      Hash[TIME_COMPONENTS.map do |time_component|
        [time_component, public_send("in_#{time_component}")]
      end]
    end

    def in_general
      remaining = @time_diff
      Hash[TIME_COMPONENTS.map do |time_component|
        if remaining > 0
          rounded_time_component = (remaining / 1.send(time_component).seconds).round(2).floor
          remaining -= rounded_time_component.send(time_component)
          [time_component, rounded_time_component]
        else
          [time_component, 0]
        end
      end]
    end

    def humanize
      diff_parts = []
      in_general.each do |part, quantity|
        next if quantity <= 0

        part = part.to_s.humanize

        part = part.singularize if quantity <= 1

        diff_parts << "#{quantity} #{part}"
      end

      last_part = diff_parts.pop
      if diff_parts.empty?
        last_part
      else
        [diff_parts.join(', '), last_part].join(' and ')
      end
    end

    private

    def initialize(start_time, end_time)
      start_time = time_in_seconds(start_time)
      end_time = time_in_seconds(end_time)

      @time_diff = (end_time - start_time).abs
    end

    def time_in_seconds(time)
      time.to_time.to_f
    end

    def in_component(component)
      (@time_diff / 1.send(component)).round(2)
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
timely-0.7.0	lib/timely/rails/time_difference.rb