Module: Weeksago

Defined in:
lib/weeksago.rb,
lib/weeksago/version.rb

Constant Summary collapse

VERSION = 
"0.1.0"

Class Method Summary collapse

Class Method Details

.weeksago(input_d: '', base_d: Date.today, wstrt_d: 'mon') ⇒ Object 



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# File 'lib/weeksago.rb', line 6

def self.weeksago(input_d: '', base_d: Date.today, wstrt_d: 'mon')
=begin
Weekago is a method to find out how many weeks ago the date entered is from the base date.
 input_d : Requested day.
 base_d  : option. Based day. Default is today.
 wstrt_d : option. Start day of the week. Default is Monday.
=end
# set base day
if base_d.is_a?(String)
  bs_day = Date.parse(base_d)
else
  bs_day = Date.today
end
# set input day
i_date = Date.parse(input_d)
# set day of the week by wday method
day = bs_day.wday
# Absorbs the difference due to the difference in start day of the week
unless wstrt_d == "mon"
  bs_day = bs_day - 1
end
# ask for base day
case day
when 0 then
  if wstrt_d == "mon"
    wst_day = bs_day - 6
  else
    wst_day = bs_day + 1
  end
when 1 then
  wst_day = bs_day
when 2 then
  wst_day = bs_day - 1
when 3 then
  wst_day = bs_day - 2
when 4 then
  wst_day = bs_day - 3
when 5 then
  wst_day = bs_day - 4
when 6 then
  wst_day = bs_day - 5
end
# ask for week ago
if i_date < wst_day
  wkag = (wst_day - i_date).div(7) + 1
else
  wkag = 0
end
return wkag
end