package main

import (
	"math"
	"time"
)

/*
totally punked from stackoverflow
https://stackoverflow.com/questions/31327124/how-to-calculate-number-of-business-days-in-golang/51607001#51607001
*/
func GetWeekDaysUntil(target time.Time) int {
	start := time.Now()
	offset := -int(start.Weekday())
	start.AddDate(0, 0, offset)

	offset += int(target.Weekday())
	if target.Weekday() == time.Sunday {
		offset++
	}

	diff := target.Sub(start).Truncate(time.Hour * 24)
	weeks := float64(diff.Hours()/24) / 7
	return int(math.Round(weeks)*5) + offset - 1
}