package CMTD::Helpers;

use strict;
use warnings;
use utf8;

use Mojo::Base 'Mojolicious::Plugin';
use Mojo::Util qw(b64_encode);

sub register {
  my ($self, $app) = @_;

  $app->helper(referrer => sub {
    my ($c) = @_;
    my $url = $c->req->headers->referrer ||
              $c->req->param('url');
    return $url;
  });

  $app->helper(pageid => sub {
    my ($c, $url) = @_;
    return unless $url;

    my $u = Mojo::URL->new($url);
    my $site = $u->host;
    my $path = $u->path;
    $path =~ s{^/+}{}o;
    $path =~ s{/+$}{}o;
    $path =~ y{/.}{-}s;
    $path =~ s<\.[a-z0-9]{2,4}$><>io;
    my $md5 = md5_sum($path);

    return {site => $site, pid => $md5, path => $path};
  });

  $app->helper(maintenance => sub {
    my ($c) = @_;
    eval {
      my $table = $c->app->config->{captcha}->{table};
      my $tries = $c->app->config->{captcha}->{tries};
      my $limit = $c->app->config->{captcha}->{limit};

      $c->app->db->delete($table, {tries => {'>=' => $tries}});
      my $count = $c->app->db->select($table, 'count(id)')->list;
      if ($count < $limit) {
        $c->app->db->begin;
        foreach my $n ($count + 1 .. $limit) {
          $c->app->log->info("generating captcha's: $n of $limit");
          my ($code, $data) = $c->app->captcha->create;
          next unless $code and $data;
          my $b64 = 'data:image/jpeg;base64,' . b64_encode($data, '');
          $c->app->db->insert($table, { code => $code, data => $b64 });
        }
        $c->app->db->commit;
      } 1;
    } or do {
      chomp $@;
      $c->app->log->error($@);
    };
  });
}

1;