# Copyright 2002-2007 Interchange Development Group and others

#

# This program 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 2 of the License, or

# (at your option) any later version. See the LICENSE file for details.

UserTag banner Order category

UserTag banner addAttr

UserTag banner PosNumber 1

UserTag banner Version $Revision: 1.6 $

UserTag banner Routine <<EOR

sub {

my ($place, $opt) = @_;

sub initialize_banner_directory {

my ($dir, $category, $opt) = @_;

mkdir $dir, 0777 if ! -d $dir;

my $t = $opt->{table} || 'banner';

my $c_field;

my $append = '';

if($category) {

$append = ' AND ';

$append .= ($opt->{c_field} || 'category');

$category =~ s/'/''/g;

$append .= " = '$category'";

}

my $db = database_exists_ref($t);

if(! $db) {

my $weight_file = "$dir/total_weight";

return undef if -f $weight_file;

$t = "no banners db $t\n";

Vend::Util::writefile( $weight_file, $t, $opt);

::logError($t);

return undef;

}

my $w_field = $opt->{w_field} || 'weight';

my $b_field = $opt->{b_field} || 'banner';

my $q = "select $w_field, $b_field from $t where $w_field >= 1$append";

my $banners = $db->query({

query => $q,

st => 'db',

});

my $i = 0;

for(@$banners) {

my ($weight, $text) = @$_;

for(1 .. $weight) {

Vend::Util::writefile(">$dir/$i", $text, $opt);

$i++;

}

}

Vend::Util::writefile(">$dir/total_weight", $i, $opt);

}

sub tag_weighted_banner {

my ($category, $opt) = @_;

my $dir = catfile($Vend::Cfg->{ScratchDir}, 'Banners');

mkdir $dir, 0777 if ! -d $dir;

if($category) {

my $c = $category;

$c =~ s/\W//g;

$dir .= "/$c";

}

my $statfile = $Vend::Cfg->{ConfDir};

$statfile .= "/status.$Vend::Cat";

my $start_time;

if($opt->{once}) {

$start_time = 0;

}

elsif(! -f $statfile) {

Vend::Util::writefile( $statfile, "banners initialized " . time() . "\n");

$start_time = time();

}

else {

$start_time = (stat(_))[9];

}

my $weight_file = "$dir/total_weight";

initialize_banner_directory($dir, $category, $opt)

if ( ! -f $weight_file or (stat(_))[9] < $start_time );

my $n = int( rand( readfile($weight_file) ) );

return Vend::Util::readfile("$dir/$n");

}

return tag_weighted_banner($place, $opt) if $opt->{weighted};

my $table = $opt->{table} || 'banner';

my $r_field = $opt->{r_field} || 'rotate';

my $b_field = $opt->{b_field} || 'banner';

my $sep = $opt->{separator} || ':';

my $delim = $opt->{delimiter} || "{or}";

$place = 'default' if ! $place;

my $totrot;

do {

my $banner_data;

$totrot = tag_data($table, $r_field, $place);

if(! length $totrot) {

# No banner present

unless ($place =~ /$sep/ or $place eq 'default') {

$place = 'default';

redo;

}

}

elsif ($totrot) {

my $current = $::Scratch->{"rotate_$place"}++ || 0;

my $data = tag_data($table, $b_field, $place);

my(@banners) = split /\Q$delim/, $data;

return '' unless @banners;

return $banners[$current % scalar(@banners)];

}

else {

return tag_data($table, $b_field, $place);

}

} while $place =~ s/(.*)$sep.*/$1/;

return;

}

EOR