#!/usr/bin/perl

# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 3 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with Koha; if not, see <http://www.gnu.org/licenses>.

#This test demonstrates why Koha uses the CSV parser and configuration
#it does.  Specifically, the test is for Unicode compliance in text
#parsing and data.  This test requires other modules that Koha doesn't
#actually use, in order to compare.  Therefore, running this test is not
#necessary to test your Koha installation.

use Modern::Perl;
use open OUT => ':encoding(UTF-8)', ':std';
use utf8;

use Test::More tests => 21;
use Text::CSV;
use Text::CSV_XS;

sub pretty_line {
    my $max = 54;
    (@_) or return "#" x $max . "\n";
    my $phrase = "  " . shift() . "  ";
    my $half   = "#" x ( ( $max - length($phrase) ) / 2 );
    return $half . $phrase . $half . "\n";
}

my ( $csv, $bin, %parsers );

foreach (qw( Text::CSV Text::CSV_XS )) {
    ok( $csv = $_->new(),                  $_ . '->new()' );
    ok( $bin = $_->new( { binary => 1 } ), $_ . '->new({binary=>1})' );
    $csv and $parsers{$_} = $csv;
    $bin and $parsers{ $_ . " (binary)" } = $bin;
}

my $lines = [
    {
        description => "010D: LATIN SMALL LETTER C WITH CARON", character => 'č',
        line        => 'field1,second field,field3,do_we_have_a_č_problem?, f!fth field ,lastfield'
    },
    {
        description => "0117: LATIN SMALL LETTER E WITH DOT ABOVE", character => 'ė',
        line        => 'field1,second field,field3,do_we_have_a_ė_problem?, f!fth field ,lastfield'
    },
];

ok(
    scalar( keys %parsers ) > 0 && scalar(@$lines) > 0,
    sprintf "Testing %d lines with  %d parsers.",
    scalar(@$lines), scalar( keys %parsers )
);

foreach my $key ( sort keys %parsers ) {
    my $parser = $parsers{$key};
    print "Testing parser $key version " . ( $parser->version || '?' ) . "\n";
}

my $i = 0;
foreach my $line (@$lines) {
    print pretty_line( "Line " . ++$i );
    print pretty_line( $line->{description} . ': ' . $line->{character} );
    foreach my $key ( sort keys %parsers ) {
        my $parser = $parsers{$key};
        my ( $status, $count, @fields );
        $status = $parser->parse( $line->{line} );
        if ($status) {
            ok( $status, "parse ($key)" );
            @fields = $parser->fields;
            $count  = scalar(@fields);
            is( $count, 6, "Number of fields ($count of 6)" );
            my $j = 0;
            foreach my $f (@fields) {
                $j++;
                print "\t field $j: $f\n";
            }
        } else {
            ok( !$status, "parse ($key) fails as expected" );    #FIXME We never hit this line
        }
    }
}