#!/usr/bin/env perl

use strict;
use warnings;
use DateTime;
use Test::More tests => 21;
use Koha::DateUtils;

BEGIN {
    use_ok('Koha::Calendar');

    # This was the only test C4 had
    # Remove when no longer used
    use_ok('C4::Calendar');
}

my $cal = Koha::Calendar->new( TEST_MODE => 1 );

isa_ok( $cal, 'Koha::Calendar', 'Calendar class returned' );

my $saturday = DateTime->new(
    year      => 2011,
    month     => 6,
    day       => 25,
    time_zone => 'Europe/London',
);
my $sunday = DateTime->new(
    year      => 2011,
    month     => 6,
    day       => 26,
    time_zone => 'Europe/London',
);
my $monday = DateTime->new(
    year      => 2011,
    month     => 6,
    day       => 27,
    time_zone => 'Europe/London',
);
my $bloomsday = DateTime->new(
    year      => 2011,
    month     => 6,
    day       => 16,
    time_zone => 'Europe/London',
);    # should be a holiday
my $special = DateTime->new(
    year      => 2011,
    month     => 6,
    day       => 1,
    time_zone => 'Europe/London',
);    # should be a holiday
my $notspecial = DateTime->new(
    year      => 2011,
    month     => 6,
    day       => 2,
    time_zone => 'Europe/London',
);    # should NOT be a holiday

is( $cal->is_holiday($sunday), 1, 'Sunday is a closed day' );   # wee free test;
is( $cal->is_holiday($monday),     0, 'Monday is not a closed day' );    # alas
is( $cal->is_holiday($bloomsday),  1, 'month/day closed day test' );
is( $cal->is_holiday($special),    1, 'special closed day test' );
is( $cal->is_holiday($notspecial), 0, 'open day test' );

my $dt = $cal->addDate( $saturday, 1, 'days' );
is( $dt->day_of_week, 1, 'addDate skips closed Sunday' );

$dt = $cal->addDate( $bloomsday, -1 );
is( $dt->ymd(), '2011-06-15', 'Negative call to addDate' );

my $test_dt = DateTime->new(    # Monday
    year      => 2012,
    month     => 7,
    day       => 23,
    hour      => 11,
    minute    => 53,
    time_zone => 'Europe/London',
);

my $later_dt = DateTime->new(    # Monday
    year      => 2012,
    month     => 9,
    day       => 17,
    hour      => 17,
    minute    => 30,
    time_zone => 'Europe/London',
);

my $daycount = $cal->days_between( $test_dt, $later_dt );
cmp_ok( $daycount->in_units('days'),
    '==', 48, 'days_between calculates correctly' );

my $ret = $cal->addDate( $test_dt, 1, 'days' );

cmp_ok( $ret->ymd(), 'eq', '2012-07-24', 'Simple Single Day Add (Calendar)' );

$ret = $cal->addDate( $test_dt, 7, 'days' );
cmp_ok( $ret->ymd(), 'eq', '2012-07-31', 'Add 7 days Calendar mode' );
$cal->set_daysmode('Datedue');
$ret = $cal->addDate( $test_dt, 7, 'days' );
cmp_ok( $ret->ymd(), 'eq', '2012-07-30', 'Add 7 days Datedue mode' );
$cal->set_daysmode('Days');
$ret = $cal->addDate( $test_dt, 7, 'days' );
cmp_ok( $ret->ymd(), 'eq', '2012-07-30', 'Add 7 days Days mode' );
$cal->set_daysmode('Calendar');

# example tests for bug report
$cal->clear_weekly_closed_days();

$daycount = $cal->days_between( dt_from_string('2012-01-10','iso'),
    dt_from_string("2012-05-05",'iso') )->in_units('days');
cmp_ok( $daycount, '==', 116, 'test larger intervals' );
$daycount = $cal->days_between( dt_from_string("2012-01-01",'iso'),
    dt_from_string("2012-05-05",'iso') )->in_units('days');
cmp_ok( $daycount, '==', 125, 'test positive intervals' );
my $daycount2 = $cal->days_between( dt_from_string("2012-05-05",'iso'),
    dt_from_string("2012-01-01",'iso') )->in_units('days');
cmp_ok( $daycount2, '==', $daycount, 'test parameter order not relevant' );
$daycount = $cal->days_between( dt_from_string("2012-07-01",'iso'),
    dt_from_string("2012-07-15",'iso') )->in_units('days');
cmp_ok( $daycount, '==', 14, 'days_between calculates correctly' );
$cal->add_holiday( dt_from_string('2012-07-06','iso') );
$daycount = $cal->days_between( dt_from_string("2012-07-01",'iso'),
    dt_from_string("2012-07-15",'iso') )->in_units('days');
cmp_ok( $daycount, '==', 13, 'holiday correctly recognized' );

$cal->add_holiday( dt_from_string('2012-07-07','iso') );
$daycount = $cal->days_between( dt_from_string("2012-07-01",'iso'),
    dt_from_string("2012-07-15",'iso') )->in_units('days');
cmp_ok( $daycount, '==', 12, 'multiple holidays correctly recognized' );