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[gruta.git] / Gruta.pm

package Gruta;

use strict;
use warnings;

use Gruta::Data;

$Gruta::VERSION = '2.0.0-rc1';

sub sources { return @{$_[0]->{sources}}; }
sub template { return $_[0]->{template}; }
sub cgi { return $_[0]->{cgi}; }

sub version { return $Gruta::VERSION; }

sub log {
        my $self        = shift;
        my $msg         = shift;

        print STDERR $self->{id}, ' ', scalar(localtime), ': ', $msg, "\n";
}


sub _call {
        my $self        = shift;
        my $method      = shift;
        my $short       = shift;

        my @r = ();

        foreach my $s ($self->sources()) {
                if (my $m = $s->can($method)) {
                        my @pr = $m->($s, @_);

                        if (@pr && $pr[0]) {
                                @r = (@r, @pr);

                                last if $short;
                        }
                }
        }

        return wantarray ? @r : $r[0];
}

sub topic { my $self = shift; return $self->_call('topic', 1, @_); }
sub topics { my $self = shift; return $self->_call('topics', 0); }

sub user { my $self = shift; return $self->_call('user', 1, @_); }
sub users { my $self = shift; return $self->_call('users', 0); }

sub story {
        my $self        = shift;
        my $topic_id    = shift;
        my $id          = shift;

        if (! $topic_id || ! $id) {
                return undef;
        }

        my $story = undef;
        my $ck = $topic_id . '/' . $id;

        if ($story = $self->{story_cache}->{$ck}) {
                return $story;
        }

        if (not $story = $self->_call('story', 1, $topic_id, $id)) {
                return undef;
        }

        my $format = $story->get('format') || 'grutatxt';

        if (my $rndr = $self->{renderers_h}->{$format}) {
                $rndr->story($story);
        }

        return $self->{story_cache}->{$ck} = $story;
}


sub stories { my $self = shift; return $self->_call('stories', 0, @_); }
sub stories_by_date { my $self = shift; return $self->_call('stories_by_date', 1, @_); }

sub search_stories {
        my $self        = shift;
        my $topic_id    = shift;

        my @l = $self->_call('search_stories', 1, $topic_id, @_);

        return sort { $self->story($topic_id, $a)->get('title') cmp
                        $self->story($topic_id, $b)->get('title') } @l;
}

sub stories_top_ten {
        my $self = shift;

        my @l = $self->_call('stories_top_ten', 0, @_);

        return sort { $b->[0] cmp $a->[0] } @l;
}

sub search_stories_by_tag {
        my $self = shift;

        my @l = $self->_call('search_stories_by_tag', 0, @_);

        return sort { $self->story($a->[0], $a->[1])->get('title') cmp
                        $self->story($b->[0], $b->[1])->get('title') } @l;
}

sub tags {
        my $self = shift;

        my @l = $self->_call('tags', 0, @_);

        return sort { $a->[0] cmp $b->[0] } @l;
}

sub insert_topic { my $self = shift; return $self->_call('insert_topic', 1, @_); }
sub insert_user { my $self = shift; return $self->_call('insert_user', 1, @_); }
sub insert_story { my $self = shift; return $self->_call('insert_story', 1, @_); }


sub auth {
        my $self        = shift;

        if (@_) { $self->{auth} = shift; }      # Gruta::Data::User

        return $self->{auth};
}


sub auth_from_sid {
        my $self        = shift;
        my $sid         = shift;

        my $u = undef;

        if ($sid) {
                $self->_call('purge_old_sessions', 0);

                if (my $session = $self->_call('session', 1, $sid)) {
                        $u = $session->source->user( $session->get('user_id') );
                        $u->set('sid', $sid);
                        $self->auth($u);
                }
        }

        return $u;
}


sub login {
        my $self        = shift;
        my $user_id     = shift;
        my $passwd      = shift;

        my $sid = undef;

        if (my $u = $self->user( $user_id )) {

                # account expired? go!
                if (my $xdate = $u->get('xdate')) {
                        if (Gruta::Data::today() > $xdate) {
                                return undef;
                        }
                }

                my $p = $u->get('password');

                if (crypt($passwd, $p) eq $p) {
                        # create new sid
                        $sid = time() . $$;

                        my $session = Gruta::Data::Session->new(
                                id      => $sid,
                                time    => time(),
                                user_id => $user_id
                        );

                        $u->source->insert_session( $session );

                        $u->set('sid', $sid);
                        $self->auth($u);
                }
        }

        return $sid;
}


sub logout {
        my $self        = shift;

        if (my $auth = $self->auth()) {
                if( my $sid = $auth->get('sid')) {
                        if (my $session = $auth->source->session( $sid )) {
                                $session->delete() if $session->can('delete');
                        }
                }
        }

        $self->auth( undef );
        return $self;
}


sub _link_to_topic {
        my $self        = shift;
        my $topic_id    = shift;

        my $ret = undef;

        if (my $t = $self->topic($topic_id)) {
                $ret = "<a href='?t=TOPIC;topic=$topic_id'>" .
                        $t->get('name') . '</a>';
        }
        else {
                $ret = "Bad topic $topic_id";
        }

        return $ret;
}


sub _link_to_story {
        my $self        = shift;
        my $topic_id    = shift;
        my $story_id    = shift;

        my $ret = undef;

        if (my $s = $self->story($topic_id, $story_id)) {
                $ret = "<a href='?t=STORY;topic=$topic_id;id=$story_id'>" .
                        $s->get('title') . '</a>';
        }
        else {
                $ret = "Bad story '$topic_id/$story_id'";
        }

        return $ret;
}


sub special_uris {
        my $self        = shift;
        my $string      = shift;

        $string =~ s!topic://([\w\d_]+)!$self->_link_to_topic($1)!ge;
        $string =~ s!story://([\w\d_]+)/([\w\d_]+)!$self->_link_to_story($1,$2)!ge;

        return $string;
}


sub transfer_to_source {
        my $self        = shift;
        my $dst         = shift;

        foreach my $id ($self->users()) {
                my $u = $self->user($id);
                $dst->insert_user($u);
        }

        foreach my $topic_id (sort $self->topics()) {
                my $t = $self->topic($topic_id);

                my $nti = $topic_id;

                # is it an archive?
                if ($nti =~ /-arch$/) {
                        # don't insert topic, just rename
                        $nti =~ s/-arch$//;
                }
                else {
                        $dst->insert_topic($t);
                }

                foreach my $id ($self->stories($topic_id)) {

                        # get story and its tags
                        my $s = $self->story($topic_id, $id);
                        my @tags = $s->tags();

                        # set new topic
                        $s->set('topic_id', $nti);

                        my $ns = $dst->insert_story($s);

                        if (@tags) {
                                $ns->tags(@tags);
                        }
                }
        }

        return $self;
}


sub flush_story_cache {
        my $self        = shift;

        $self->{story_cache} = {};
}


sub new {
        my $class       = shift;

        my $g = bless( { @_ } , $class);

        $g->{id} ||= 'Gruta';
        $g->{story_cache} = {};
        $g->{renderers_h} = {};

        if (ref($g->{sources}) ne 'ARRAY') {
                $g->{sources} = [ $g->{sources} ];
        }

        if ($g->{renderers}) {
                if (ref($g->{renderers}) ne 'ARRAY') {
                        $g->{renderers} = [ $g->{renderers} ];
                }

                foreach my $r (@{$g->{renderers}}) {
                        $g->{renderers_h}->{$r->{renderer_id}} = $r;
                }
        }

        $g->template->data($g)  if $g->{template};
        $g->cgi->data($g)       if $g->{cgi};

        return $g;
}

sub run {
        my $self        = shift;

        if ($self->{cgi}) {
                $self->cgi->run();
        }
}

1;