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# frozen_string_literal: true
# Redmine - project management software
# Copyright (C) 2006-2023 Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
module Redmine
module Utils
module DateCalculation
# Returns the number of working days between from and to
def working_days(from, to)
days = (to - from).to_i
if days > 0
weeks = days / 7
result = weeks * (7 - non_working_week_days.size)
days_left = days - weeks * 7
start_cwday = from.cwday
days_left.times do |i|
unless non_working_week_days.include?(((start_cwday + i - 1) % 7) + 1)
result += 1
end
end
result
else
0
end
end
# Adds working days to the given date
def add_working_days(date, working_days)
if working_days > 0
weeks = working_days / (7 - non_working_week_days.size)
result = weeks * 7
days_left = working_days - weeks * (7 - non_working_week_days.size)
cwday = date.cwday
while days_left > 0
cwday += 1
unless non_working_week_days.include?(((cwday - 1) % 7) + 1)
days_left -= 1
end
result += 1
end
next_working_date(date + result)
else
date
end
end
# Returns the date of the first day on or after the given date that is a working day
def next_working_date(date)
cwday = date.cwday
days = 0
days += 1 while non_working_week_days.include?(((cwday + days - 1) % 7) + 1)
date + days
end
# Returns the index of non working week days (1=monday, 7=sunday)
def non_working_week_days
@non_working_week_days ||= begin
days = Setting.non_working_week_days
if days.is_a?(Array) && days.size < 7
days.map(&:to_i)
else
[]
end
end
end
end
end
end
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