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 ?
147 if ( $unit eq 'hours' ) {
148 # Fixed for legacy support. Should be set as a branch parameter
149 my $return_by_hour = 10;
151 $dt = $self->addHours($startdate, $add_duration, $return_by_hour);
154 $dt = $self->addDays($startdate, $add_duration);
160 my ( $self, $startdate, $hours_duration, $return_by_hour ) = @_;
161 my $base_date = $startdate->clone();
163 $base_date->add_duration($hours_duration);
165 # If we are using the calendar behave for now as if Datedue
166 # was the chosen option (current intended behaviour)
168 if ( $self->{days_mode} ne 'Days' &&
169 $self->is_holiday($base_date) ) {
171 if ( $hours_duration->is_negative() ) {
172 $base_date = $self->prev_open_days($base_date, 1);
174 $base_date = $self->next_open_days($base_date, 1);
177 $base_date->set_hour($return_by_hour);
185 my ( $self, $startdate, $days_duration ) = @_;
186 my $base_date = $startdate->clone();
188 $self->{days_mode} ||= q{};
190 if ( $self->{days_mode} eq 'Calendar' ) {
191 # use the calendar to skip all days the library is closed
193 my $days = abs $days_duration->in_units('days');
195 if ( $days_duration->is_negative() ) {
197 $base_date = $self->prev_open_days($base_date, 1);
202 $base_date = $self->next_open_days($base_date, 1);
207 } else { # Days, Datedue or Dayweek
208 # use straight days, then use calendar to push
209 # the date to the next open day as appropriate
210 # if Datedue or Dayweek
211 $base_date->add_duration($days_duration);
213 if ( $self->{days_mode} eq 'Datedue' ||
214 $self->{days_mode} eq 'Dayweek') {
215 # Datedue or Dayweek, then use the calendar to push
216 # the date to the next open day if holiday
217 if ( $self->is_holiday($base_date) ) {
218 my $dow = $base_date->day_of_week;
219 my $days = $days_duration->in_units('days');
220 # Is it a period based on weeks
221 my $push_amt = $days_duration % 7 == 0 ?
222 $self->get_push_amt($base_date) : 1;
223 if ( $days_duration->is_negative() ) {
224 $base_date = $self->prev_open_days($base_date, $push_amt);
226 $base_date = $self->next_open_days($base_date, $push_amt);
236 my ( $self, $base_date) = @_;
238 my $dow = $base_date->day_of_week;
240 # We're using Dayweek useDaysMode option
241 $self->{days_mode} eq 'Dayweek' &&
242 # It's not a permanently closed day
243 !$self->{weekly_closed_days}->[$dow] == 1
248 my ( $self, $dt ) = @_;
250 my $localdt = $dt->clone();
251 my $day = $localdt->day;
252 my $month = $localdt->month;
254 #Change timezone to "floating" before doing any calculations or comparisons
255 $localdt->set_time_zone("floating");
256 $localdt->truncate( to => 'day' );
259 if ( $self->exception_holidays->contains($localdt) ) {
260 # exceptions are not holidays
264 my $dow = $localdt->day_of_week;
266 # DateTime object dow (1-7) where Monday is 1
267 # Arrays are 0-based where 0 = Sunday, not 7.
272 if ( $self->{weekly_closed_days}->[$dow] == 1 ) {
276 if ( exists $self->{day_month_closed_days}->{$month}->{$day} ) {
280 my $ymd = $localdt->ymd('') ;
281 if ($self->single_holidays( $ymd ) == 1 ) {
285 # damn have to go to work after all
290 my ( $self, $dt, $to_add ) = @_;
291 my $base_date = $dt->clone();
293 $base_date->add(days => $to_add);
294 while ($self->is_holiday($base_date)) {
295 my $add_next = $self->get_push_amt($base_date);
296 $base_date->add(days => $add_next);
302 my ( $self, $dt, $to_sub ) = @_;
303 my $base_date = $dt->clone();
305 # It feels logical to be passed a positive number, though we're
306 # subtracting, so do the right thing
307 $to_sub = $to_sub > 0 ? 0 - $to_sub : $to_sub;
309 $base_date->add(days => $to_sub);
311 while ($self->is_holiday($base_date)) {
312 my $sub_next = $self->get_push_amt($base_date);
313 $base_date->add(days => $sub_next);
321 my $start_dt = shift;
322 my $num_days = shift;
324 return $start_dt unless $num_days > 0;
326 my $base_dt = $start_dt->clone();
328 while ($num_days--) {
329 $base_dt = $self->next_open_days($base_dt, 1);
337 my $start_dt = shift;
340 # Change time zone for date math and swap if needed
341 $start_dt = $start_dt->clone->set_time_zone('floating');
342 $end_dt = $end_dt->clone->set_time_zone('floating');
343 if( $start_dt->compare($end_dt) > 0 ) {
344 ( $start_dt, $end_dt ) = ( $end_dt, $start_dt );
347 # start and end should not be closed days
348 my $days = $start_dt->delta_days($end_dt)->delta_days;
349 while( $start_dt->compare($end_dt) < 1 ) {
350 $days-- if $self->is_holiday($start_dt);
351 $start_dt->add( days => 1 );
353 return DateTime::Duration->new( days => $days );
357 my ($self, $start_date, $end_date) = @_;
358 my $start_dt = $start_date->clone()->set_time_zone('floating');
359 my $end_dt = $end_date->clone()->set_time_zone('floating');
360 my $duration = $end_dt->delta_ms($start_dt);
361 $start_dt->truncate( to => 'day' );
362 $end_dt->truncate( to => 'day' );
363 # NB this is a kludge in that it assumes all days are 24 hours
364 # However for hourly loans the logic should be expanded to
365 # take into account open/close times then it would be a duration
366 # of library open hours
367 # start and end should not be closed days
368 my $skipped_days = 0;
369 while( $start_dt->compare($end_dt) < 1 ) {
370 $start_dt->add( days => 1 );
371 $skipped_days++ if $self->is_holiday($start_dt);
374 $duration->subtract_duration(DateTime::Duration->new( hours => 24 * $skipped_days));
381 my ( $self, $mode ) = @_;
383 # if not testing this is a no op
384 if ( $self->{test} ) {
385 $self->{days_mode} = $mode;
391 sub clear_weekly_closed_days {
393 $self->{weekly_closed_days} = [ 0, 0, 0, 0, 0, 0, 0 ]; # Sunday only
402 Koha::Calendar - Object containing a branches calendar
408 my $c = Koha::Calendar->new( branchcode => 'MAIN' );
409 my $dt = DateTime->now();
412 $open = $c->is_holiday($dt);
413 # when will item be due if loan period = $dur (a DateTime::Duration object)
414 $duedate = $c->addDate($dt,$dur,'days');
419 Implements those features of C4::Calendar needed for Staffs Rolling Loans
423 =head2 new : Create a calendar object
425 my $calendar = Koha::Calendar->new( branchcode => 'MAIN' );
427 The option branchcode is required
432 my $dt = $calendar->addDate($date, $dur, $unit)
434 C<$date> is a DateTime object representing the starting date of the interval.
436 C<$offset> is a DateTime::Duration to add to it
438 C<$unit> is a string value 'days' or 'hours' toflag granularity of duration
440 Currently unit is only used to invoke Staffs return Monday at 10 am rule this
441 parameter will be removed when issuingrules properly cope with that
446 my $dt = $calendar->addHours($date, $dur, $return_by_hour )
448 C<$date> is a DateTime object representing the starting date of the interval.
450 C<$offset> is a DateTime::Duration to add to it
452 C<$return_by_hour> is an integer value representing the opening hour for the branch
457 my $dt = $calendar->addDays($date, $dur)
459 C<$date> is a DateTime object representing the starting date of the interval.
461 C<$offset> is a DateTime::Duration to add to it
463 C<$unit> is a string value 'days' or 'hours' toflag granularity of duration
465 Currently unit is only used to invoke Staffs return Monday at 10 am rule this
466 parameter will be removed when issuingrules properly cope with that
469 =head2 single_holidays
471 my $rc = $self->single_holidays( $ymd );
473 Passed a $date in Ymd (yyyymmdd) format - returns 1 if date is a single_holiday, or 0 if not.
478 $yesno = $calendar->is_holiday($dt);
480 passed a DateTime object returns 1 if it is a closed day
481 0 if not according to the calendar
485 $duration = $calendar->days_between($start_dt, $end_dt);
487 Passed two dates returns a DateTime::Duration object measuring the length between them
488 ignoring closed days. Always returns a positive number irrespective of the
489 relative order of the parameters
491 =head2 next_open_days
493 $datetime = $calendar->next_open_days($duedate_dt, $to_add)
495 Passed a Datetime and number of days, returns another Datetime representing
496 the next open day after adding the passed number of days. It is intended for
497 use to calculate the due date when useDaysMode syspref is set to either
498 'Datedue', 'Calendar' or 'Dayweek'.
500 =head2 prev_open_days
502 $datetime = $calendar->prev_open_days($duedate_dt, $to_sub)
504 Passed a Datetime and a number of days, returns another Datetime
505 representing the previous open day after subtracting the number of passed
506 days. It is intended for use to calculate the due date when useDaysMode
507 syspref is set to either 'Datedue', 'Calendar' or 'Dayweek'.
511 For testing only allows the calling script to change days mode
513 =head2 clear_weekly_closed_days
515 In test mode changes the testing set of closed days to a new set with
516 no closed days. TODO passing an array of closed days to this would
517 allow testing of more configurations
521 Passed a datetime object this will add it to the calendar's list of
522 closed days. This is for testing so that we can alter the Calenfar object's
523 list of specified dates
527 Will croak if not passed a branchcode in new
529 =head1 BUGS AND LIMITATIONS
531 This only contains a limited subset of the functionality in C4::Calendar
532 Only enough to support Staffs Rolling loans
536 Colin Campbell colin.campbell@ptfs-europe.com
538 =head1 LICENSE AND COPYRIGHT
540 Copyright (c) 2011 PTFS-Europe Ltd All rights reserved
542 This program is free software: you can redistribute it and/or modify
543 it under the terms of the GNU General Public License as published by
544 the Free Software Foundation, either version 2 of the License, or
545 (at your option) any later version.
547 This program is distributed in the hope that it will be useful,
548 but WITHOUT ANY WARRANTY; without even the implied warranty of
549 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
550 GNU General Public License for more details.
552 You should have received a copy of the GNU General Public License
553 along with this program. If not, see <http://www.gnu.org/licenses/>.