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package Crawl::Bot::Mantis;
use Moose;
use autodie;
use File::Spec;
use XML::RAI;
has bot => (
is => 'ro',
isa => 'Crawl::Bot',
required => 1,
weak_ref => 1,
handles => [qw(say_all data_dir)],
);
has rss_feed => (
is => 'ro',
isa => 'Str',
lazy => 1,
default => 'http://crawl.develz.org/mantis/issues_rss.php',
);
has _cache_file => (
is => 'ro',
isa => 'Str',
lazy => 1,
default => 'mantis_issue_cache',
);
sub cache_file {
my $self = shift;
return File::Spec->catfile($self->data_dir, $self->_cache_file);
}
has issues => (
traits => ['Hash'],
isa => 'HashRef',
lazy => 1,
default => sub { { } },
handles => {
has_issue => 'exists',
issues => 'keys',
_add_issue => 'set',
},
);
sub BUILD {
my $self = shift;
my $file = $self->cache_file;
if (-r $file) {
warn "Updating seen issue list from the cache...";
open my $fh, '<', $file;
while (<$fh>) {
chomp;
$self->add_issue($_);
warn " got issue $_";
}
}
else {
warn "Updating seen issue list from a fresh copy of the feed...";
$self->each_issue(sub {
my $issue = shift;
my $link = $issue->identifier;
(my $id = $link) =~ s/.*=(\d+)$/$1/;
$self->add_issue($id);
warn " got issue $id";
});
$self->save_cache;
}
}
sub save_cache {
my $self = shift;
warn "Saving cache state to " . $self->cache_file;
open my $fh, '>', $self->cache_file;
$fh->print("$_\n") for $self->issues;
}
sub add_issue {
my $self = shift;
$self->_add_issue($_[0], 1);
}
sub each_issue {
my $self = shift;
my ($code) = @_;
my $rss = XML::RAI->parse_uri($self->rss_feed);
for my $issue (@{ $rss->items }) {
$code->($issue);
}
}
sub tick {
my $self = shift;
warn "Checking for new issues...";
$self->each_issue(sub {
my $issue = shift;
(my $id = $issue->identifier) =~ s/.*=(\d+)$/$1/;
return if $self->has_issue($id);
warn "New issue! ($id)";
(my $title = $issue->title) =~ s/\d+: //;
my $link = $issue->link;
(my $user = $issue->creator) =~ s/ <.*?>$//;
$self->say_all("$title ($link) by $user");
$self->add_issue($id);
});
$self->save_cache;
}
__PACKAGE__->meta->make_immutable;
no Moose;
1;
|
