From eb5e954eaee67eed131d22f5fc18a0c2efa6b414 Mon Sep 17 00:00:00 2001
From: David Bourgault <david.bourgault@inlibro.com>
Date: Tue, 10 Oct 2017 11:15:59 -0400
Subject: [PATCH] Bug 17983 - Add Minutes math to DiscreteCalendar

---
 Koha/DiscreteCalendar.pm | 94 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)

diff --git a/Koha/DiscreteCalendar.pm b/Koha/DiscreteCalendar.pm
index 8718137..5351847 100644
--- a/Koha/DiscreteCalendar.pm
+++ b/Koha/DiscreteCalendar.pm
@@ -1145,6 +1145,73 @@ sub open_hours_between {
     return ($working_hours_between->next()->get_column('hours_between') - $not_used_hours->next()->get_column('not_used_hours'));
 }
 
+=head2 open_minutes_between
+
+  $minutes = $calendar->open_minutes_between($start_date, $end_date)
+
+Returns the number of minutes between C<$start_date> and C<$end_date>, taking into
+account the opening hours of the library.
+
+=cut
+
+sub open_minutes_between {
+    my ($self, $start_date, $end_date) = @_;
+    my $branchcode = $self->{branchcode};
+    my $schema = Koha::Database->new->schema;
+    my $dtf = $schema->storage->datetime_parser;
+    $start_date = $dtf->format_datetime($start_date);
+    $end_date = $dtf->format_datetime($end_date);
+
+    my $working_minutes_between = $schema->resultset('DiscreteCalendar')->search(
+        {
+            branchcode  => $branchcode,
+            isopened    => 1,
+        },
+        {
+            select  => \['sum(time_to_sec(timediff(closehour, openhour)) / 60)'],
+            as      => [qw /minutes_between/],
+            where   => \['date BETWEEN DATE(?) AND DATE(?)', $start_date, $end_date]
+        }
+    );
+
+    my $loan_day = $schema->resultset('DiscreteCalendar')->search(
+        {
+            branchcode  => $branchcode,
+        },
+        {
+            where       => \['date = DATE(?)', $start_date],
+        }
+    );
+
+    my $return_day = $schema->resultset('DiscreteCalendar')->search(
+        {
+            branchcode  => $branchcode,
+        },
+        {
+            where       => \['date = DATE(?)', $end_date],
+        }
+    );
+
+    #Capture the time portion of the date
+    $start_date =~ /\s(.*)/;
+    my $loan_date_time = $1;
+    $end_date =~ /\s(.*)/;
+    my $return_date_time = $1;
+
+    my $not_used_minutes = $schema->resultset('DiscreteCalendar')->search(
+        {
+            branchcode  => $branchcode,
+            isopened    => 1,
+        },
+        {
+            select  => \[ '(time_to_sec(timediff(?, ?)) + time_to_sec(timediff(?, ?)) ) / 60', $return_day->next()->closehour(), $return_date_time, $loan_date_time, $loan_day->next()->openhour()],
+            as      => [qw /not_used_minutes/],
+        }
+    );
+
+    return DateTime::Duration->new( minutes => $working_minutes_between->next()->get_column('minutes_between') - $not_used_minutes->next()->get_column('not_used_minutes'));
+}
+
 =head2 addDate
 
   my $dt = $calendar->addDate($date, $dur, $unit)
@@ -1171,6 +1238,8 @@ sub addDate {
         my $return_by_hour = 10;
 
         $dt = $self->addHours($startdate, $add_duration, $return_by_hour);
+    } elsif($unit eq 'minutes') {
+        $dt = $self->addMinutes($startdate, $add_duration);
     } else {
         # days
         $dt = $self->addDays($startdate, $add_duration);
@@ -1213,6 +1282,31 @@ sub addHours {
     return $base_date;
 }
 
+=head2 addMinutes
+
+  $end = $calendar->addMinutes($date, $dur)
+
+Add C<$dur> minutes to C<$start> date.
+
+=cut
+
+sub addMinutes {
+    my ( $self, $startdate, $minutes_duration) = @_;
+    my $base_date = $startdate->clone();
+
+    $base_date->add_duration($minutes_duration);
+
+    my $dateInfo = $self->get_date_info($base_date);
+
+    my $close_datetime = dt_from_string($dateInfo->{date} ." ". $dateInfo->{closehour}, 'iso');
+
+    if(DateTime->compare($base_date, $close_datetime) > 0) {
+        return $close_datetime;
+    }
+
+    return $base_date;
+}
+
 =head2 addDays
 
   $date = $calendar->addDays($start, $duration)
-- 
2.7.4