#!/usr/bin/perl
#
# Note: This file assumes good dates, SL behaviour with bad dates is undefined
#

use strict;
use warnings;
use Test::More;
use Math::BigFloat;

use LedgerSMB::Sysconfig;
use LedgerSMB;
use LedgerSMB::Form;
use LedgerSMB::Locale;
use LedgerSMB::App_State;
use Log::Log4perl;
Log::Log4perl::init(\$LedgerSMB::Sysconfig::log4perl_config);


$ENV{REQUEST_METHOD} = 'GET';
     # Suppress warnings from LedgerSMB::_process_cookies


my $form = Form->new;
my $locale_en = LedgerSMB::Locale->get_handle('en_CA');
my $locale_es = LedgerSMB::Locale->get_handle('es');
my %myconfig;
ok(defined $form);
isa_ok($form, 'Form');
my $lsmb = LedgerSMB->new;
ok(defined $lsmb);
isa_ok($lsmb, 'LedgerSMB');

my @formats = ( ['mm-dd-yy', '-', 2, '02-29-00', '03-01-00'],
                ['mm/dd/yy', '/', 2, '02/29/00', '03/01/00'],
                ['dd-mm-yy', '-', 2, '29-02-00', '01-03-00'],
                ['dd/mm/yy', '/', 2, '29/02/00', '01/03/00'],
                ['dd.mm.yy', '.', 2, '29.02.00', '01.03.00'],
#               ['yyyymmdd', '', 4, '20000229', '20000301'],
                ['yyyy-mm-dd', '-', 4, '2000-02-29', '2000-03-01']);

my @months = ('January', 'February', 'March', 'April', 'May ', 'June',
        'July', 'August', 'September', 'October', 'November', 'December');

my @mon = ('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
        'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec');

my %month_num = ('01' => '31', '02' => '28', '03' => '31', '04' => '30',
                 '05' => '31', '06' => '30', '07' => '31', '08' => '31',
                 '09' => '30', '10' => '31', '11' => '30', '12' => '31');

my $today = `date +\%F`;
chomp $today;
my %today_parts;
$today_parts{'yyyy'} = `date +\%Y`;
$today_parts{'yy'} = $today_parts{'yyyy'};
$today_parts{'yy'} =~ s/^..//;
$today_parts{'mm'} = `date +\%m`;
$today_parts{'dd'} = `date +\%d`;
chomp $today_parts{'yyyy'};
chomp $today_parts{'yy'};
chomp $today_parts{'mm'};
chomp $today_parts{'dd'};

# $locale->date checks
# Note that $locale->date assumes the year range 2000-2099
# Note that $locale->date does not perform language-specific long forms
# Note that $locale->date also takes in yyyymmdd
foreach my $format (0 .. $#formats) {
        %myconfig = (dateformat => $formats[$format][0]);
        my $fmt = $formats[$format][0];
        my $sep = $formats[$format][1];
        my $yearcount = $formats[$format][2];
        my $result = $formats[$format][3];
        $result =~ s/^(.*)(20)?00(.*)$/${1}2000${3}/ if $yearcount == 2;
        cmp_ok($locale_en->date(\%myconfig), 'eq',
                '', "date, $fmt: empty string");
        cmp_ok($locale_en->date(\%myconfig, $formats[$format][3]), 'eq',
                $result, "date, $fmt: short");
        cmp_ok($locale_en->date(\%myconfig, '20000229'), 'eq',
                $result, "date, $fmt: chopped");
        for my $mm (1 .. 12) {
                my $start = $fmt;
                my $temp = sprintf('%02d', $mm);
                my $month_en = $locale_en->maketext($months[$mm - 1]);
                my $month_en_2 = $locale_en->maketext($mon[$mm - 1]);
                my $month_es = $locale_es->maketext($months[$mm - 1]);
                $start =~ s/dd/29/;
                $start =~ s/yyyy/2000/;
                $start =~ s/yy/00/;
                $start =~ s/mm/$temp/;
                cmp_ok($locale_es->date(\%myconfig, $start, 1), 'eq',
                        "$month_es 29 2000", "date, $start, $fmt: long, es");
                cmp_ok($locale_en->date(\%myconfig, $start, 1), 'eq',
                        "$month_en 29 2000", "date, $start, $fmt: long, en");
                cmp_ok($locale_en->date(\%myconfig, $start, ''), 'eq',
                        "$month_en_2 29 2000", "date, $start, $fmt: '', en") if
                        $start !~ /^\d{4}\D/; # Ack... special case
        }
        cmp_ok($locale_en->date(\%myconfig, '2007-05-18', ''), 'eq',
                "2007-05-18", "date, 2007-05-18, $fmt: '', en");
}

foreach my $format (0 .. $#formats) {
        %myconfig = (dateformat => $formats[$format][0]);
        my $fmt = $formats[$format][0];
        my $sep = $formats[$format][1];
        my $yearcount = $formats[$format][2];
        cmp_ok($form->datetonum(\%myconfig, $formats[$format][3]), 'eq',
                '20000229', "form: datetonum, $fmt");
}
cmp_ok($form->datetonum(\%myconfig), 'eq', '', "form: datetonum, empty string");
cmp_ok($form->datetonum(\%myconfig, '1234'), 'eq', '1234',
        "form: datetonum, 1234");

# $form->split_date checks
# Note that $form->split_date assumes the year range 2000-2099
# Note that $form->split_date only outputs two digit years
# Note that $form->split_date if a date provided without non-digit, identity
foreach my $format (0 .. $#formats) {
        %myconfig = (dateformat => $formats[$format][0]);
        my $fmt = $formats[$format][0];
        my $sep = $formats[$format][1];
        my $yearcount = $formats[$format][2];
        my @output = $form->split_date($fmt, $formats[$format][3]);
        my $rv = $fmt;
        $rv =~ s/\Q$sep\E//g;
        $rv =~ s/(yy)?yy/$output[1]/;
        $rv =~ s/mm/$output[2]/;
        $rv =~ s/dd/$output[3]/;
        cmp_ok($output[1], 'eq', '00', "split_date specified, year");
        cmp_ok($output[2], 'eq', '02', "split_date specified, month");
        cmp_ok($output[3], 'eq', '29', "split_date specified, day");
        cmp_ok($output[0], 'eq', $rv, "split_date specified, unit");
        @output = $form->split_date($fmt);
        $rv = $fmt;
        $rv =~ s/\Q$sep\E//g;
        $rv =~ s/(yy)?yy/$output[1]/;
        $rv =~ s/mm/$output[2]/;
        $rv =~ s/dd/$output[3]/;
        my $tv = $fmt;
        $tv =~ s/\Q$sep\E//g;
        $tv =~ s/(yy)?yy/$today_parts{'yy'}/;
        $tv =~ s/mm/$today_parts{'mm'}/;
        $tv =~ s/dd/$today_parts{'dd'}/;
        cmp_ok($output[1], 'eq', $today_parts{'yy'},
                "split_date unspecified, year");
        cmp_ok($output[2], 'eq', $today_parts{'mm'},
                "split_date unspecified, month");
        cmp_ok($output[3], 'eq', $today_parts{'dd'},
                "split_date unspecified, day");
        @output = $form->split_date($fmt, '12345');
        cmp_ok($output[0], 'eq', '12345',
                'split_date, 12345');
}

# $form->format_date checks
# Note that $form->format_date always outputs four digit years
foreach my $format (0 .. $#formats) {
        $form->{db_dateformat} = $formats[$format][0];
        my $fmt = $formats[$format][0];
        my $sep = $formats[$format][1];
        my $yearcount = $formats[$format][2];
        my $results = $fmt;
        $results =~ s/(yy)?yy/2000/;
        $results =~ s/mm/02/;
        $results =~ s/dd/29/;
        cmp_ok($form->format_date('2000-02-29'), 'eq',
                $results, "format_date, $fmt, ISO");
        cmp_ok($form->format_date($formats[$format][3]), 'eq',
                $formats[$format][3], "format_date, $fmt, non-ISO");
}

# $form->from_to checks
# Note that $form->from_to requires $form->format_date
# Note that $form->from_to outputs four digit years
# Note that $form->from_to outputs 1999-12-31 (formatted) if no input given
# Note that $form->from_to outputs the last day of the previous year if only year given
# Note that $form->from_to outputs the last day of the chosen month if month given
# Note that $form->from_to $interval of 0 is current day
# Note that $form->from_to $interval is an integral quantity of months
# Note that $form->from_to will fail if ($interval + $month) > 22
# (2 + 23), 25 - 12, 13 - 1, 12
foreach my $format (0 .. $#formats) {
        $form->{db_dateformat} = $formats[$format][0];
        my $fmt = 'yyyy-mm-dd';
        my $sep = '-';
        my $yearcount = $formats[$format][2];
        my $results = $fmt;
        $results =~ s/(yy)?yy/1999/;
        $results =~ s/mm/12/;
        $results =~ s/dd/31/;
        cmp_ok($form->from_to(), 'eq',
                $results, "from_to, $fmt, unspecified");
        $results =~ s/1999/2006/;
        cmp_ok($form->from_to('07'), 'eq',
                $results, "from_to, $fmt, 07");
        cmp_ok($form->from_to('2007'), 'eq',
                $results, "from_to, $fmt, 2007");
        $results =~ s/2006/2007/;
        $results =~ s/12/05/;
        cmp_ok($form->from_to('07', '05'), 'eq',
                $results, "from_to, $fmt, 07-05");
        cmp_ok($form->from_to('2007', '05'), 'eq',
                $results, "from_to, $fmt, 2007-05");
        $results =~ s/05/02/;
        $results =~ s/31/28/;
        cmp_ok($form->from_to('07', '02'), 'eq',
                $results, "from_to, $fmt, 07-02");
        cmp_ok($form->from_to('2007', '02'), 'eq',
                $results, "from_to, $fmt, 2007-02");
        $results =~ s/2007/2000/;
        $results =~ s/28/29/;
        cmp_ok($form->from_to('00', '02'), 'eq',
                $results, "from_to, $fmt, 00-02 leap day");
        cmp_ok($form->from_to('2000', '02'), 'eq',
                $results, "from_to, $fmt, 2000-02 leap day");
        $results =~ s/29/31/;
        $results =~ s/02/01/;
        cmp_ok($form->from_to('00', '01'), 'eq',
                $results, "from_to, $fmt, 00-01 year edge");
        cmp_ok($form->from_to('2000', '01'), 'eq',
                $results, "from_to, $fmt, 2000-01 year edge");
        $results =~ s/01/12/;
        cmp_ok($form->from_to('00', '12'), 'eq',
                $results, "from_to, $fmt, 00-12 year edge");
        cmp_ok($form->from_to('2000', '12'), 'eq',
                $results, "from_to, $fmt, 2000-12 year edge");
        $results =~ s/12/02/;
        $results =~ s/31/29/;
        cmp_ok($form->from_to('00', '02', '1'), 'eq',
                $results, "from_to, $fmt, 00-02, 1 interval");
        cmp_ok($form->from_to('2000', '02', '1'), 'eq',
                $results, "from_to, $fmt, 2000-02, 1 interval");
        $results =~ s/29/28/;
        my $month;
        my $lastmonth;
        for (2 .. 11) {
                $month = sprintf '%02d', $_ + 1;
                $lastmonth = sprintf '%02d', $_;
                $results =~ s/$lastmonth/$month/;
                $results =~ s/$month_num{$lastmonth}/$month_num{$month}/;
                cmp_ok($form->from_to('00', '02', $_), 'eq',
                        $results, "from_to, $fmt, 00-02, $_ interval");
                cmp_ok($form->from_to('2000', '02', $_), 'eq',
                        $results, "from_to, $fmt, 2000-02, $_ interval");
        }
        $results =~ s/2000/2001/;
        for (0 .. 10) {
                $month = sprintf '%02d', $_ + 1;
                $lastmonth = sprintf '%02d', $_;
                $lastmonth = '12' if $lastmonth eq '00';
                $results =~ s/([^0])$lastmonth/${1}$month/;
                $results =~ s/^$lastmonth/$month/;
                $results =~ s/$month_num{$lastmonth}/$month_num{$month}/;
                cmp_ok($form->from_to('00', '02', $_ + 12), 'eq',
                        $results, "from_to, $fmt, 00-02, $_ + 12 interval");
                cmp_ok($form->from_to('2000', '02', $_ + 12), 'eq',
                        $results, "from_to, $fmt, 2000-02, $_ + 12 interval");
        }
        $results =~ s/11/$today_parts{'mm'}/;
        $results =~ s/30/$today_parts{'dd'}/;
        $results =~ s/2001/$today_parts{'yyyy'}/;
        cmp_ok($form->from_to('00', '02', '0'), 'eq',
                $results, "from_to, $fmt, 00-02, 0 interval (today)");
        cmp_ok($form->from_to('2000', '02', '0'), 'eq',
                $results, "from_to, $fmt, 2000-02, 0 interval (today)");
}

# $form->add_date checks
# returns undef if no date passed
# valid units: days, weeks, months, years
# all uses in LSMB use days unit
# has no error handling capabilities
foreach my $format (0 .. $#formats) {
        $form->{db_dateformat} = $formats[$format][0];
        %myconfig = (dateformat => $formats[$format][0]);
        my $fmt = $formats[$format][0];
        my $sep = $formats[$format][1];
        my $yearcount = $formats[$format][2];
        my $start = $fmt;
        $start =~ s/(yy)?yy/2000/;
        $start =~ s/mm/01/;
        $start =~ s/dd/29/;
        my $results = $start;
        $results =~ s/29/30/;
        cmp_ok($form->add_date(\%myconfig, $start, 1, 'days'), 'eq',
                $results, "add_date, $fmt, 1 days, 2000-01-29");
        $results =~ s/30/31/;
        cmp_ok($form->add_date(\%myconfig, $start, 2, 'days'), 'eq',
                $results, "add_date, $fmt, 2 days, 2000-01-29");
        $results =~ s/31/05/;
        $results =~ s/01/02/;
        cmp_ok($form->add_date(\%myconfig, $start, 1, 'weeks'), 'eq',
                $results, "add_date, $fmt, 1 weeks, 2000-01-29");
        $results =~ s/05/12/;
        cmp_ok($form->add_date(\%myconfig, $start, 2, 'weeks'), 'eq',
                $results, "add_date, $fmt, 2 weeks, 2000-01-29");
        $results =~ s/12/29/;
        cmp_ok($form->add_date(\%myconfig, $start, 1, 'months'), 'eq',
                $results, "add_date, $fmt, 1 months, 2000-01-29");
        $results =~ s/02/03/;
        cmp_ok($form->add_date(\%myconfig, $start, 2, 'months'), 'eq',
                $results, "add_date, $fmt, 2 months, 2000-01-29");
        $results = $start;
        $results =~ s/01/11/;
        cmp_ok($form->add_date(\%myconfig, $start, 10, 'months'), 'eq',
                $results, "add_date, $fmt, 10 months, 2000-01-29");
        $results = $start;
        $results =~ s/01/12/;
        cmp_ok($form->add_date(\%myconfig, $start, 11, 'months'), 'eq',
                $results, "add_date, $fmt, 11 months, 2000-01-29");
        $results = $start;
        $results =~ s/2000/2001/;
        cmp_ok($form->add_date(\%myconfig, $start, 12, 'months'), 'eq',
                $results, "add_date, $fmt, 12 months, 2000-01-29");
        cmp_ok($form->add_date(\%myconfig, $start, 1, 'years'), 'eq',
                $results, "add_date, $fmt, 1 years, 2000-01-29");
        $results =~ s/2001/2002/;
        cmp_ok($form->add_date(\%myconfig, $start, 2, 'years'), 'eq',
                $results, "add_date, $fmt, 2 years, 2000-01-29");
}
cmp_ok($form->add_date(\%myconfig, '20000129', 2, 'years'), 'eq',
        '20020129', 'add_date, yyyymmdd, 2 years, 20000129');
ok(!defined $form->add_date(\%myconfig),
        'add_date, undef if no date');


use LedgerSMB::PGDate;

# there are 4 requirements to PGDate that we can verify here:
is(LedgerSMB::PGDate->from_input('')->to_output, '',
   'round-tripping empty string returns empty string');
is(LedgerSMB::PGDate->from_input(undef)->to_output, '',
   'round-tripping "undef" returns an empty string (for easy concatenation)');
is(LedgerSMB::PGDate->from_input('2016-01-01')->to_output, '2016-01-01',
   'round-tripping valid ISO-8601 date returns that date');

foreach my $test (
    {
        format => 'dd/mm/yyyy',
        date => '29/10/2016',
    },
    {
        format => 'dd.mm.yyyy',
        date => '29.10.2016',
    },
    {
        format => 'dd-mm-yyyy',
        date => '29-10-2016',
    },
    {
        format => 'ddmmyyyy',
        date => '29102016',
    },
    {
        format => 'ddmmyy',
        date => '291016',
    },
    {
        format => 'mm/dd/yyyy',
        date => '10/29/2016',
    },
    {
        format => 'mm.dd.yyyy',
        date => '10.29.2016',
    },
    {
        format => 'mm-dd-yyyy',
        date => '10-29-2016',
    },
    {
        format => 'mmddyyyy',
        date => '10292016',
    },
    {
        format => 'mmddyy',
        date => '102916',
    },
    {
        format => 'yyyymmdd',
        date => '20161029',
    },
    {
        format => 'yymmdd',
        date => '161029',
    },
) {
   $LedgerSMB::App_State::User = { dateformat => $test->{format} };
   is(eval { LedgerSMB::PGDate->from_input($test->{date})->to_output },
      $test->{date},
      "round-tripping valid '$test->{format}' date returns that date");
}


done_testing;
