Task

Write a function or program which:

   takes a positive integer representing a duration in seconds as input (e.g., 100), and
   returns a string which shows the same duration decomposed into:
   weeks,
   days, 
   hours, 
   minutes,   and 
   seconds.
This is detailed below (e.g., "2 hr, 59 sec").



Demonstrate that it passes the following three test-cases:

Test Cases


 input number

 output string


 7259

 2 hr, 59 sec


 86400

 1 d


 6000000

 9 wk, 6 d, 10 hr, 40 min

Details
The following five units should be used:



 unit

 suffix used in output

 conversion


 week

 wk

 1 week = 7 days


 day

 d

 1 day = 24 hours


 hour

 hr

 1 hour = 60 minutes


 minute

 min

 1 minute = 60 seconds


 second

 sec



However, only include quantities with non-zero values in the output (e.g., return "1 d" and not "0 wk, 1 d, 0 hr, 0 min, 0 sec").

Give larger units precedence over smaller ones as much as possible (e.g., return 2 min, 10 sec and not 1 min, 70 sec or 130 sec)

Mimic the formatting shown in the test-cases (quantities sorted from largest unit to smallest and separated by comma+space; value and unit of each quantity separated by space).




duration(n){
	sec:=1, min:=60*sec, hr:=60*min, day:=24*hr, wk:=7*day
	w	:=n//wk		, n:=Mod(n,wk)
	d	:=n//day	, n:=Mod(n,day)
	h	:=n//hr		, n:=Mod(n,hr)
	m	:=n//min	, n:=Mod(n,min)
	s	:=n
	return trim((w?w " wk, ":"") (d?d " d, ":"") (h?h " hr, ":"") (m?m " min, ":"") (s?s " sec":""),", ")
}