yolanda/trunk/search.pl

158 lines
4.1 KiB
Perl
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require "include.pl";
require "functions.pl";
#initialize session data
CGI::Session->name($session_name);
$query = new CGI;
$session = new CGI::Session;
%page = ();
#if a username is associated with session id, username is nonempty
$page->{'username'} = get_username_from_sid($session->id);
$page->{'locale'} = $locale;
$page->{'stylesheet'} = $stylesheet;
$page->{'xmlns:dc'} = $xmlns_dc;
$page->{'xmlns:cc'} = $xmlns_cc;
$page->{'xmlns:rdf'} = $xmlns_rdf;
#check if query is set
if($query->param('query') or $query->param('orderby'))
{
$page->{results}->{query} = $query->param('query');
$page->{results}->{orderby} = $query->param('orderby');
$page->{results}->{sort} = $query->param('sort');
#connect to db
my $dbh = DBI->connect("DBI:mysql:$database:$dbhost", $dbuser, $dbpass) or die $dbh->errstr;
my @args = ();
#build mysql query
$dbquery = "select v.id, v.title, v.creator, v.description, u.username, from_unixtime( v.timestamp ), v.duration, v.viewcount";
if($query->param('query'))
{
$dbquery .= ", match(v.title, v.description, v.subject) against( ? in boolean mode) as relevance";
$dbquery .= " from videos as v, users as u where u.id = v.userid";
$dbquery .= " and match(v.title, v.description, v.subject) against( ? in boolean mode)";
push @args, $query->param('query'), $query->param('query');
}
else
{
$dbquery .= " from videos as v, users as u where u.id = v.userid";
}
if($query->param('orderby'))
{
if($query->param('orderby') eq 'filesize')
{
$dbquery .= " order by v.filesize";
}
elsif($query->param('orderby') eq 'duration')
{
$dbquery .= " order by v.duration";
}
elsif($query->param('orderby') eq 'viewcount')
{
$dbquery .= " order by v.viewcount";
}
elsif($query->param('orderby') eq 'downloadcount')
{
$dbquery .= " order by v.downloadcount";
}
elsif($query->param('orderby') eq 'timestamp')
{
$dbquery .= " order by v.timestamp";
}
elsif($query->param('orderby') eq 'relevance' and $query->param('query'))
{
$dbquery .= " order by relevance";
}
else
{
$dbquery .= " order by v.id";
}
if($query->param('sort') eq "asc")
{
$dbquery .= " asc"
}
else
{
$dbquery .= " desc"
}
}
#prepare query
my $sth = $dbh->prepare($dbquery) or die $dbh->errstr;
#execute it
$resultcount = $sth->execute(@args) or die $dbquery;
$rowsperpage = 2;
#rediculous but funny round up, will fail with 1000000000000000 results per page
#on 0.00000000000001% of all queries - this is a risk we can handle
$lastpage = int($resultcount/$rowsperpage+0.999999999999999);
$currentpage = $query->param('page') or $currentpage = 1;
$dbquery .= " limit ".($currentpage-1)*$rowsperpage.", ".$rowsperpage;
#prepare query
$sth = $dbh->prepare($dbquery) or die $dbh->errstr;
#execute it
$sth->execute(@args) or die $dbquery;
$page->{'results'}->{'lastpage'} = $lastpage;
$page->{'results'}->{'currentpage'} = $currentpage;
$page->{'results'}->{'resultcount'} = $resultcount;
#get every returned value
while (my ($id, $title, $creator, $description, $username, $timestamp, $duration, $viewcount, $relevance) = $sth->fetchrow_array())
{
#before code cleanup, this was a really obfuscated array/hash creation
push @{ $page->{'results'}->{'result'} },
{
'thumbnail' => "./video-stills/$id",
'duration' => $duration,
'viewcount' => $viewcount,
'rdf:RDF' =>
{
'cc:Work' =>
{
'rdf:about' => "$domain/download/$id",
'dc:title' => [$title],
'dc:creator' => [$creator],
'dc:date' => [$timestamp],
'dc:identifier' => ["$domain/video/$title/$id"],
'dc:publisher' => [$username]
},
'cc:License' =>
{
'rdf:about' => 'http://creativecommons.org/licenses/GPL/2.0/'
}
}
};
}
#finish query
$sth->finish() or die $dbh->errstr;
#close db
$dbh->disconnect() or die $dbh->errstr;
}
else
{
$page->{'message'}->{'type'} = "error";
$page->{'message'}->{'text'} = "error_202c";
}
#print xml http header along with session cookie
print $session->header(-type=>'text/xml', -charset=>'UTF-8');
#print xml
print XMLout($page, KeyAttr => {}, XMLDecl => $XMLDecl, RootName => 'page', AttrIndent => '1');