projekt kivitendo

sub add_business_duration {

  my ($self, %params) = @_;

  my $abs_days = abs $params{days};

  my $neg      = $params{days} < 0;

  my $bweek    = $params{businessweek} || 5;

  my $weeks    = int ($abs_days / $bweek);

  my $days     = $abs_days % $bweek;

  if ($neg) {

    $self->subtract(weeks => $weeks);

    $self->add(days => 8 - $self->day_of_week) if $self->day_of_week > $bweek;

    $self->subtract(days => $self->day_of_week > $days ? $days : $days + (7 - $bweek));

  } else {

    $self->add(weeks => $weeks);

    $self->subtract(days => $self->day_of_week - $bweek) if $self->day_of_week > $bweek;

    $self->add(days => $self->day_of_week + $days <= $bweek ? $days : $days + (7 - $bweek));

  }

  $self;

}

sub add_businessdays {

  my ($self, %params) = @_;

  $self->add_business_duration(%params);

}

sub subtract_businessdays {

  my ($self, %params) = @_;

  $params{days} *= -1;

  $self->add_business_duration(%params);

}

use Test::More tests => 50;

use lib 't';

use Data::Dumper;

use DateTime;

use_ok 'SL::Helper::DateTime';

sub mon { DateTime->new(year => 2014, month => 6, day => 23) }

sub tue { DateTime->new(year => 2014, month => 6, day => 24) }

sub wed { DateTime->new(year => 2014, month => 6, day => 25) }

sub thu { DateTime->new(year => 2014, month => 6, day => 26) }

sub fri { DateTime->new(year => 2014, month => 6, day => 27) }

sub sat { DateTime->new(year => 2014, month => 6, day => 28) }

sub sun { DateTime->new(year => 2014, month => 6, day => 29) }

is mon->add_businessdays(days => 5)->day_of_week, 1, "mon + 5 => mon";

is mon->add_businessdays(days => 12)->day_of_week, 3, "mon + 12 => wed";

is fri->add_businessdays(days => 2)->day_of_week, 2, "fri + 2 => tue";

is tue->add_businessdays(days => 9)->day_of_week, 1, "tue + 9 => mon";

is tue->add_businessdays(days => 8)->day_of_week, 5, "tue + 8 => fri";

# same with 6day week

is mon->add_businessdays(businessweek => 6, days => 5)->day_of_week, 6, "mon + 5 => sat (6dw)";

is mon->add_businessdays(businessweek => 6, days => 12)->day_of_week, 1, "mon + 12 => mon (6dw)";

is fri->add_businessdays(businessweek => 6, days => 2)->day_of_week, 1, "fri + 2 => mon (6dw)";

is tue->add_businessdays(businessweek => 6, days => 9)->day_of_week, 5, "tue + 9 => fri (6dw)";

is tue->add_businessdays(businessweek => 6, days => 8)->day_of_week, 4, "tue + 8 => thu (6dw)";

# absolute dates

is mon->add_businessdays(days => 5), mon->add(days => 7), "mon + 5 => mon (date)";

is mon->add_businessdays(days => 12), mon->add(days => 16), "mon + 12 => wed (date)";

is fri->add_businessdays(days => 2), fri->add(days => 4), "fri + 2 => tue (date)";

is tue->add_businessdays(days => 9), tue->add(days => 13), "tue + 9 => mon (date)";

is tue->add_businessdays(days => 8), tue->add(days => 10), "tue + 8 => fri (date)";

# same with 6day week

is mon->add_businessdays(businessweek => 6, days => 5), mon->add(days => 5), "mon + 5 => sat (date) (6dw)";

is mon->add_businessdays(businessweek => 6, days => 12), mon->add(days => 14), "mon + 12 => mon (date) (6dw)";

is fri->add_businessdays(businessweek => 6, days => 2), fri->add(days => 3), "fri + 2 => mon (date) (6dw)";

is tue->add_businessdays(businessweek => 6, days => 9), tue->add(days => 10), "tue + 9 => fri (date) (6dw)";

is tue->add_businessdays(businessweek => 6, days => 8), tue->add(days => 9), "tue + 8 => thu (date) (6dw)";

# same with substract

is mon->subtract_businessdays(days => 5)->day_of_week, 1, "mon - 5 => mon";

is mon->subtract_businessdays(days => 12)->day_of_week, 4, "mon - 12 => thu";

is fri->subtract_businessdays(days => 2)->day_of_week, 3, "fri - 2 => wed";

is tue->subtract_businessdays(days => 9)->day_of_week, 3, "tue - 9 => wed";

is tue->subtract_businessdays(days => 8)->day_of_week, 4, "tue - 8 => thu";

# same with 6day week

is mon->subtract_businessdays(businessweek => 6, days => 5)->day_of_week, 2, "mon - 5 => tue (6dw)";

is mon->subtract_businessdays(businessweek => 6, days => 12)->day_of_week, 1, "mon - 12 => mon (6dw)";

is fri->subtract_businessdays(businessweek => 6, days => 4)->day_of_week, 1, "fri - 4 => mon (6dw)";

is tue->subtract_businessdays(businessweek => 6, days => 9)->day_of_week, 5, "tue - 9 => fri (6dw)";

is tue->subtract_businessdays(businessweek => 6, days => 8)->day_of_week, 6, "tue - 8 => sat (6dw)";

# absolute dates

is mon->subtract_businessdays(days => 5), mon->add(days => -7), "mon - 5 => mon (date)";

is mon->subtract_businessdays(days => 12), mon->add(days => -18), "mon - 12 => thu (date)";

is fri->subtract_businessdays(days => 2), fri->add(days => -2), "fri - 2 => wed (date)";

is tue->subtract_businessdays(days => 9), tue->add(days => -13), "tue - 9 => wed (date)";

is tue->subtract_businessdays(days => 8), tue->add(days => -12), "tue - 8 => thu (date)";

# same with 6day week

is mon->subtract_businessdays(businessweek => 6, days => 5), mon->add(days => -6), "mon - 5 => tue (date) (6dw)";

is mon->subtract_businessdays(businessweek => 6, days => 12), mon->add(days => -14), "mon - 12 => mon (date) (6dw)";

is fri->subtract_businessdays(businessweek => 6, days => 4), fri->add(days => -4), "fri - 4 => mon (date) (6dw)";

is tue->subtract_businessdays(businessweek => 6, days => 9), tue->add(days => -11), "tue - 9 => fri (date) (6dw)";

is tue->subtract_businessdays(businessweek => 6, days => 8), tue->add(days => -10), "tue - 8 => sat (date) (6dw)";

# add with negative days?

is mon->add_businessdays(businessweek => 6, days => -5), mon->add(days => -6), "mon - 5 => tue (date) (6dw)";

is mon->add_businessdays(businessweek => 6, days => -12), mon->add(days => -14), "mon - 12 => mon (date) (6dw)";

is fri->add_businessdays(businessweek => 6, days => -4), fri->add(days => -4), "fri - 4 => mon (date) (6dw)";

is tue->add_businessdays(businessweek => 6, days => -9), tue->add(days => -11), "tue - 9 => fri (date) (6dw)";

is tue->add_businessdays(businessweek => 6, days => -8), tue->add(days => -10), "tue - 8 => sat (date) (6dw)";

# what if staring date falls into eekend?

is sun->add_businessdays(days => 1), sun->add(days => 1), "1 day after sun is mon";

is sat->add_businessdays(days => 1), sat->add(days => 2), "1 day after sut is mon";

is sun->add_businessdays(days => -1), sun->add(days => -2), "1 day before sun is fri";

is sat->add_businessdays(days => -1), sat->add(days => -1), "1 day before sut is fri";