File Coverage

blib/lib/App/MojoSlides.pm

Criterion	Covered	Total	%
statement	71	82	86.5
branch	12	26	46.1
condition	1	2	50.0
subroutine	15	18	83.3
pod	1	2	50.0
total	100	130	76.9

package App::MojoSlides;

use Mojo::Base 'Mojolicious';

our $VERSION = '0.11';
$VERSION = eval $VERSION;

use App::MojoSlides::Slides;

use Mojo::File;

has slides => sub {
  my $self = shift;
  return App::MojoSlides::Slides->new(
    $self->config->{slides} || ()
  );
};

sub startup {
  my $self = shift;

  $self->plugin( 'InstallablePaths' );

  $self->helper( presentation_file => sub {
    require File::Spec;
    require File::Basename;

    my $file = $ENV{MOJO_SLIDES_PRESENTATION} || 'presentation.pl';
    return $file unless -e $file; # return early if not found

    my $abs = File::Spec->rel2abs($file);
    return File::Basename::fileparse($abs) if wantarray;
    return $abs;
  });

  $self->plugin( Config => {
    file => scalar $self->presentation_file,
    default => {
      slides    => undef,
      ppi       => undef,
      templates => undef,
      static    => undef,
      bootstrap_theme => undef,
      more_tag_helpers => 1,
      extra_css => undef,
      extra_js => undef,
      header_template => 'ms_header',
      footer_template => 'ms_footer',
      finally => sub {},
    },
  });

  # should this be optional?
  $self->include_data_handle_from_file(scalar $self->presentation_file);

  $self->plugin('App::MojoSlides::MoreTagHelpers') if $self->config->{more_tag_helpers};

  if (my $path = $self->config->{templates}) {
    unshift @{ $self->renderer->paths }, ref $path ? @$path : $path;
  }

  if (my $path = $self->config->{static}) {
    unshift @{ $self->static->paths }, ref $path ? @$path : $path;
  }

  if (my $ppi = $self->config->{ppi}) {
    my $args = {};
    $args->{src_folder} = $ppi if -d $ppi;
    $self->plugin(PPI => $args);
  }

  $self->helper( prev_slide => sub {
    my $c = shift;
    return $c->app->slides->prev($c->stash('slide'));
  });

  $self->helper( next_slide => sub {
    my $c = shift;
    return $c->app->slides->next($c->stash('slide'));
  });

  $self->helper( first_slide => sub { shift->app->slides->first } );
  $self->helper( last_slide  => sub { shift->app->slides->last  } );

  $self->helper( row     => sub { shift->tag( 'div', class => 'row', @_ ) } );
  $self->helper( column  => \&_column );
  $self->helper( overlay => sub { shift->tag( 'div', ms_overlay => shift, @_ ) } );
  $self->helper( vspace  => sub { shift->tag( 'div', style => "min-height: @{[shift]};" => '') } );

  my $r = $self->routes;
  $r->any(
    '/:slide',
    { slide => $self->slides->first },
    [ slide => qr/\b\d+\b/ ],
    \&_action,
  );

  my $finally = $self->config->{finally};
  $self->$finally();
}

sub _action {
  my $c = shift;
  my $slides = $c->app->slides;
  my $slide = $slides->template_for($c->stash('slide'))
    or return $c->render_not_found;
  $c->render($slide, layout => 'basic') || $c->render_not_found;
}

sub _column {
  my $c = shift;
  my $cols = ref $_[0] ? shift : [ shift ];
  my $class = join ' ', map { "col-md-$_" } @$cols;
  return $c->tag( div => class => $class, @_ );
}

# hic sunt dracones
sub include_data_handle_from_file {
  my ($self, $file) = @_;
  require Mojo::Util;
  my $string = Mojo::File->new($file)->slurp;
  open my $handle, '<', \$string;
  while (<$handle>) {
    last if /^__DATA__/; # seek to __DATA__
  }

  state $i = 0;
  my $class = 'App::MojoSlides::TextOfFile' . $i++;
  {
    no strict 'refs';
    *{$class.'::DATA'} = $handle;
  }
  unshift @{ $self->renderer->classes }, $class;
}

1;

__END__