1 package Koha::Calendar;
8 use DateTime::Duration;
14 my ( $classname, %options ) = @_;
16 bless $self, $classname;
17 for my $o_name ( keys %options ) {
19 $self->{$o} = $options{$o_name};
21 if ( !defined $self->{branchcode} ) {
22 croak 'No branchcode argument passed to Koha::Calendar->new';
30 my $branch = $self->{branchcode};
31 my $dbh = C4::Context->dbh();
32 my $weekly_closed_days_sth = $dbh->prepare(
33 'SELECT weekday FROM repeatable_holidays WHERE branchcode = ? AND weekday IS NOT NULL'
35 $weekly_closed_days_sth->execute( $branch );
36 $self->{weekly_closed_days} = [ 0, 0, 0, 0, 0, 0, 0 ];
37 while ( my $tuple = $weekly_closed_days_sth->fetchrow_hashref ) {
38 $self->{weekly_closed_days}->[ $tuple->{weekday} ] = 1;
40 my $day_month_closed_days_sth = $dbh->prepare(
41 'SELECT day, month FROM repeatable_holidays WHERE branchcode = ? AND weekday IS NULL'
43 $day_month_closed_days_sth->execute( $branch );
44 $self->{day_month_closed_days} = {};
45 while ( my $tuple = $day_month_closed_days_sth->fetchrow_hashref ) {
46 $self->{day_month_closed_days}->{ $tuple->{month} }->{ $tuple->{day} } =
50 $self->{days_mode} ||= C4::Context->preference('useDaysMode');
55 sub exception_holidays {
58 my $cache = Koha::Caches->get_instance();
59 my $cached = $cache->get_from_cache('exception_holidays');
60 return $cached if $cached;
62 my $dbh = C4::Context->dbh;
63 my $branch = $self->{branchcode};
64 my $exception_holidays_sth = $dbh->prepare(
65 'SELECT day, month, year FROM special_holidays WHERE branchcode = ? AND isexception = 1'
67 $exception_holidays_sth->execute( $branch );
69 while ( my ( $day, $month, $year ) = $exception_holidays_sth->fetchrow ) {
75 time_zone => "floating",
76 )->truncate( to => 'day' );
78 $self->{exception_holidays} =
79 DateTime::Set->from_datetimes( dates => $dates );
80 $cache->set_in_cache( 'exception_holidays', $self->{exception_holidays} );
81 return $self->{exception_holidays};
85 my ( $self, $date ) = @_;
86 my $branchcode = $self->{branchcode};
87 my $cache = Koha::Caches->get_instance();
88 my $single_holidays = $cache->get_from_cache('single_holidays');
90 # $single_holidays looks like:
99 unless ($single_holidays) {
100 my $dbh = C4::Context->dbh;
101 $single_holidays = {};
103 # push holidays for each branch
105 $dbh->prepare('SELECT distinct(branchcode) FROM special_holidays');
106 $branches_sth->execute();
107 while ( my $br = $branches_sth->fetchrow ) {
108 my $single_holidays_sth = $dbh->prepare(
109 'SELECT day, month, year FROM special_holidays WHERE branchcode = ? AND isexception = 0'
111 $single_holidays_sth->execute($br);
114 while ( my ( $day, $month, $year ) =
115 $single_holidays_sth->fetchrow )
117 my $dt = DateTime->new(
121 time_zone => 'floating',
122 )->truncate( to => 'day' );
123 push @ymd_arr, $dt->ymd('');
125 $single_holidays->{$br} = \@ymd_arr;
127 $cache->set_in_cache( 'single_holidays', $single_holidays,
128 { expiry => 76800 } ) #24 hrs ;
130 my $holidays = ( $single_holidays->{$branchcode} );
131 for my $hols (@$holidays ) {
132 return 1 if ( $date == $hols ) #match ymds;
138 my ( $self, $startdate, $add_duration, $unit ) = @_;
140 # Default to days duration (legacy support I guess)
141 if ( ref $add_duration ne 'DateTime::Duration' ) {
142 $add_duration = DateTime::Duration->new( days => $add_duration );
145 $unit ||= 'days'; # default days ?
148 if ( $unit eq 'hours' ) {
149 # Fixed for legacy support. Should be set as a branch parameter
150 my $return_by_hour = 10;
152 $dt = $self->addHours($startdate, $add_duration, $return_by_hour);
155 $dt = $self->addDays($startdate, $add_duration);
162 my ( $self, $startdate, $hours_duration, $return_by_hour ) = @_;
163 my $base_date = $startdate->clone();
165 $base_date->add_duration($hours_duration);
167 # If we are using the calendar behave for now as if Datedue
168 # was the chosen option (current intended behaviour)
170 if ( $self->{days_mode} ne 'Days' &&
171 $self->is_holiday($base_date) ) {
173 if ( $hours_duration->is_negative() ) {
174 $base_date = $self->prev_open_days($base_date, 1);
176 $base_date = $self->next_open_days($base_date, 1);
179 $base_date->set_hour($return_by_hour);
187 my ( $self, $startdate, $days_duration ) = @_;
188 my $base_date = $startdate->clone();
190 $self->{days_mode} ||= q{};
192 if ( $self->{days_mode} eq 'Calendar' ) {
193 # use the calendar to skip all days the library is closed
195 my $days = abs $days_duration->in_units('days');
197 if ( $days_duration->is_negative() ) {
199 $base_date = $self->prev_open_days($base_date, 1);
204 $base_date = $self->next_open_days($base_date, 1);
209 } else { # Days or Datedue
210 # use straight days, then use calendar to push
211 # the date to the next open day if Datedue
212 $base_date->add_duration($days_duration);
214 if ( $self->{days_mode} eq 'Datedue' ) {
215 # Datedue, then use the calendar to push
216 # the date to the next open day if holiday
217 if ( $self->is_holiday($base_date) ) {
219 if ( $days_duration->is_negative() ) {
220 $base_date = $self->prev_open_day($base_date);
222 $base_date = $self->next_open_day($base_date);
232 my ( $self, $dt ) = @_;
234 my $localdt = $dt->clone();
235 my $day = $localdt->day;
236 my $month = $localdt->month;
238 #Change timezone to "floating" before doing any calculations or comparisons
239 $localdt->set_time_zone("floating");
240 $localdt->truncate( to => 'day' );
243 if ( $self->exception_holidays->contains($localdt) ) {
244 # exceptions are not holidays
248 my $dow = $localdt->day_of_week;
250 # DateTime object dow (1-7) where Monday is 1
251 # Arrays are 0-based where 0 = Sunday, not 7.
256 if ( $self->{weekly_closed_days}->[$dow] == 1 ) {
260 if ( exists $self->{day_month_closed_days}->{$month}->{$day} ) {
264 my $ymd = $localdt->ymd('') ;
265 if ($self->single_holidays( $ymd ) == 1 ) {
269 # damn have to go to work after all
274 my ( $self, $dt, $to_add ) = @_;
275 my $base_date = $dt->clone();
277 $base_date->add(days => $to_add);
279 while ($self->is_holiday($base_date)) {
280 $base_date->add(days => $to_add);
287 my ( $self, $dt, $to_sub ) = @_;
288 my $base_date = $dt->clone();
290 # It feels logical to be passed a positive number, though we're
291 # subtracting, so do the right thing
292 $to_sub = $to_sub > 0 ? 0 - $to_sub : $to_sub;
294 $base_date->add(days => $to_sub);
296 while ($self->is_holiday($base_date)) {
297 $base_date->add(days => $to_sub);
305 my $start_dt = shift;
306 my $num_days = shift;
308 return $start_dt unless $num_days > 0;
310 my $base_dt = $start_dt->clone();
312 while ($num_days--) {
313 $base_dt = $self->next_open_days($base_dt, 1);
321 my $start_dt = shift;
324 # Change time zone for date math and swap if needed
325 $start_dt = $start_dt->clone->set_time_zone('floating');
326 $end_dt = $end_dt->clone->set_time_zone('floating');
327 if( $start_dt->compare($end_dt) > 0 ) {
328 ( $start_dt, $end_dt ) = ( $end_dt, $start_dt );
331 # start and end should not be closed days
332 my $days = $start_dt->delta_days($end_dt)->delta_days;
333 while( $start_dt->compare($end_dt) < 1 ) {
334 $days-- if $self->is_holiday($start_dt);
335 $start_dt->add( days => 1 );
337 return DateTime::Duration->new( days => $days );
341 my ($self, $start_date, $end_date) = @_;
342 my $start_dt = $start_date->clone()->set_time_zone('floating');
343 my $end_dt = $end_date->clone()->set_time_zone('floating');
344 my $duration = $end_dt->delta_ms($start_dt);
345 $start_dt->truncate( to => 'day' );
346 $end_dt->truncate( to => 'day' );
347 # NB this is a kludge in that it assumes all days are 24 hours
348 # However for hourly loans the logic should be expanded to
349 # take into account open/close times then it would be a duration
350 # of library open hours
351 # start and end should not be closed days
352 my $skipped_days = 0;
353 while( $start_dt->compare($end_dt) < 1 ) {
354 $start_dt->add( days => 1 );
355 $skipped_days++ if $self->is_holiday($start_dt);
358 $duration->subtract_duration(DateTime::Duration->new( hours => 24 * $skipped_days));
365 my ( $self, $mode ) = @_;
367 # if not testing this is a no op
368 if ( $self->{test} ) {
369 $self->{days_mode} = $mode;
375 sub clear_weekly_closed_days {
377 $self->{weekly_closed_days} = [ 0, 0, 0, 0, 0, 0, 0 ]; # Sunday only
386 Koha::Calendar - Object containing a branches calendar
392 my $c = Koha::Calendar->new( branchcode => 'MAIN' );
393 my $dt = DateTime->now();
396 $open = $c->is_holiday($dt);
397 # when will item be due if loan period = $dur (a DateTime::Duration object)
398 $duedate = $c->addDate($dt,$dur,'days');
403 Implements those features of C4::Calendar needed for Staffs Rolling Loans
407 =head2 new : Create a calendar object
409 my $calendar = Koha::Calendar->new( branchcode => 'MAIN' );
411 The option branchcode is required
416 my $dt = $calendar->addDate($date, $dur, $unit)
418 C<$date> is a DateTime object representing the starting date of the interval.
420 C<$offset> is a DateTime::Duration to add to it
422 C<$unit> is a string value 'days' or 'hours' toflag granularity of duration
424 Currently unit is only used to invoke Staffs return Monday at 10 am rule this
425 parameter will be removed when issuingrules properly cope with that
430 my $dt = $calendar->addHours($date, $dur, $return_by_hour )
432 C<$date> is a DateTime object representing the starting date of the interval.
434 C<$offset> is a DateTime::Duration to add to it
436 C<$return_by_hour> is an integer value representing the opening hour for the branch
441 my $dt = $calendar->addDays($date, $dur)
443 C<$date> is a DateTime object representing the starting date of the interval.
445 C<$offset> is a DateTime::Duration to add to it
447 C<$unit> is a string value 'days' or 'hours' toflag granularity of duration
449 Currently unit is only used to invoke Staffs return Monday at 10 am rule this
450 parameter will be removed when issuingrules properly cope with that
453 =head2 single_holidays
455 my $rc = $self->single_holidays( $ymd );
457 Passed a $date in Ymd (yyyymmdd) format - returns 1 if date is a single_holiday, or 0 if not.
462 $yesno = $calendar->is_holiday($dt);
464 passed a DateTime object returns 1 if it is a closed day
465 0 if not according to the calendar
469 $duration = $calendar->days_between($start_dt, $end_dt);
471 Passed two dates returns a DateTime::Duration object measuring the length between them
472 ignoring closed days. Always returns a positive number irrespective of the
473 relative order of the parameters
475 =head2 next_open_days
477 $datetime = $calendar->next_open_days($duedate_dt, $to_add)
479 Passed a Datetime and number of days, returns another Datetime representing
480 the next open day after adding the passed number of days. It is intended for
481 use to calculate the due date when useDaysMode syspref is set to either
482 'Datedue', 'Calendar' or 'Dayweek'.
484 =head2 prev_open_days
486 $datetime = $calendar->prev_open_days($duedate_dt, $to_sub)
488 Passed a Datetime and a number of days, returns another Datetime
489 representing the previous open day after subtracting the number of passed
490 days. It is intended for use to calculate the due date when useDaysMode
491 syspref is set to either 'Datedue', 'Calendar' or 'Dayweek'.
495 For testing only allows the calling script to change days mode
497 =head2 clear_weekly_closed_days
499 In test mode changes the testing set of closed days to a new set with
500 no closed days. TODO passing an array of closed days to this would
501 allow testing of more configurations
505 Passed a datetime object this will add it to the calendar's list of
506 closed days. This is for testing so that we can alter the Calenfar object's
507 list of specified dates
511 Will croak if not passed a branchcode in new
513 =head1 BUGS AND LIMITATIONS
515 This only contains a limited subset of the functionality in C4::Calendar
516 Only enough to support Staffs Rolling loans
520 Colin Campbell colin.campbell@ptfs-europe.com
522 =head1 LICENSE AND COPYRIGHT
524 Copyright (c) 2011 PTFS-Europe Ltd All rights reserved
526 This program is free software: you can redistribute it and/or modify
527 it under the terms of the GNU General Public License as published by
528 the Free Software Foundation, either version 2 of the License, or
529 (at your option) any later version.
531 This program is distributed in the hope that it will be useful,
532 but WITHOUT ANY WARRANTY; without even the implied warranty of
533 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
534 GNU General Public License for more details.
536 You should have received a copy of the GNU General Public License
537 along with this program. If not, see <http://www.gnu.org/licenses/>.