# Grabber for dailymotion.com
#
# (c) 2007 by Ralf Ertzinger <ralf@camperquake.de>
# licensed under GNU GPL v2

package videosite::DailyMotionGrabber;

use videosite::GrabberBase;
@ISA = qw(videosite::GrabberBase);

use LWP::Simple qw(!get);
use HTML::Parser;
use videosite::JSArrayParser;
use Data::Dumper;

use strict;

sub new {
    my $class = shift;
    my $self = $class->SUPER::new();

    $self->{'NAME'} = 'dailymotion';
    $self->{'PATTERNS'} = ['(http://(?:[-a-zA-Z0-9_.]+\.)*dailymotion.com/(?:[^/]+/)*video/([-a-zA-Z0-9_]+))'];

    bless($self, $class);

    $self->_prepare_parameters();

    return $self;
}

sub _parse {
    my $self = shift;
    my $url = shift;
    my $pattern = shift;
    my $content;
    my $metadata = {};
    my $p = HTML::Parser->new(api_version => 3);
    my @accum;
    my @text;
    my $e;

    $url =~ m|$pattern|;
    $url = $1;

    $metadata->{'URL'} = $url;
    $metadata->{'ID'} = $2;
    $metadata->{'TYPE'} = 'video';
    $metadata->{'SOURCE'} = $self->{'NAME'};
    $metadata->{'TITLE'} = undef;
    $metadata->{'DLURL'} = undef;

    unless(defined($content = LWP::Simple::get(sprintf('http://www.dailymotion.com/video/%s', $2)))) {
        $self->error('Could not download %s', $url);
        return undef;
    }

    $p->handler(start => \@accum, "tagname, attr");
    $p->handler(text => \@text, "text");
    $p->report_tags(qw(meta script));
    $p->utf8_mode(1);
    $p->parse($content);

    # Look for the title in the meta tags
    foreach $e (@accum) {
        if ('meta' eq $e->[0]) {
            if ('title' eq $e->[1]->{'name'}) {
                $metadata->{'TITLE'} = $e->[1]->{'content'};
                $metadata->{'TITLE'} =~ s/^Dailymotion\s+-\s+//;
                $metadata->{'TITLE'} =~ s/(?:\s+-\s+.*)?$//;
            }
        }
    }

    # Look for the download URL
    foreach $e (@text) {
        if ($e->[0] =~ m|\.addVariable\("sequence",\s*"([^\"]+)"|) {
            my $sequence = $1;
            my $jsp = videosite::JSArrayParser->new();
            my $main;
            my $s;

            $sequence =~ s/%(..)/chr(hex($1))/ge;
            $self->debug("Found sequence: %s", $sequence);

            $self->debug("Using %s to parse", ref($jsp));
            $sequence = $jsp->parse($sequence);
            $self->debug(Dumper($sequence));

            unless(defined($sequence)) {
                $self->error("Found sequence, but could not parse");
                return undef;
            } else {
                $self->debug("Parsed sequence: %s", Dumper($sequence));

                foreach (@{$sequence}) {
                    if (exists($_->{'name'}) && ($_->{'name'} eq 'main')) {
                        # Found main section
                        $main = $_->{'layerList'};
                    }
                }
                unless(defined($main)) {
                    $self->error("Could not find layerList[main]");
                    return undef;
                }

                foreach (@{$main}) {
                    if (exists($_->{'name'}) && ($_->{'name'} eq 'video')) {
                        # Found video section
                        if (exists($_->{'param'}->{'hdURL'})) {
                            $metadata->{'DLURL'} = $_->{'param'}->{'hdURL'};
                        } elsif (exists($_->{'param'}->{'hqURL'})) {
                            $metadata->{'DLURL'} = $_->{'param'}->{'hqURL'};
                        } elsif (exists($_->{'param'}->{'hqURL'})) {
                            $metadata->{'DLURL'} = $_->{'param'}->{'sdURL'};
                        } else {
                            $self->error("Video section found, but no URLs");
                            return undef;
                        }
                    }
                }
            }
        }
    }

    unless(defined($metadata->{'DLURL'}) && defined($metadata->{'TITLE'})) {
        $self->error('Could not determine download URL');
        return undef;
    }

    return $metadata;
}

1;