lib/Gruntmaster/Page/Base.pm

   1 package Gruntmaster::Page::Base;
   2
   3 use 5.014000;
   4 use strict;
   5 use warnings;
   6 our $VERSION = '0.001';
   7
   8 use File::Slurp qw/read_file/;
   9 use HTML::Template::Compiled;
  10
  11 ##################################################
  12
  13 sub read_templates {
  14         my $root = 'tmpl';
  15         my $name = shift;
  16
  17         map { m/\.(.+)$/; $1 => scalar read_file $_ } <tmpl/$name.*>;
  18 }
  19
  20 my %header_templates = read_templates 'header';
  21 my %footer_templates = read_templates 'footer';
  22
  23 sub header{
  24   my ($language, $title) = @_;
  25   $header_templates{$language} =~ s/TITLE_GOES_HERE/$title/ger;
  26 }
  27
  28 sub footer{
  29   $footer_templates{$_[0]};
  30 }
  31
  32 ##################################################
  33
  34 use POSIX ();
  35 use Gruntmaster::Data ();
  36 use List::Util ();
  37 use LWP::UserAgent;
  38 use Plack::Request ();
  39 use feature ();
  40
  41 my $ua = LWP::UserAgent->new;
  42 my %templates;
  43
  44 use Carp qw/cluck/;
  45
  46 sub import_to {
  47         my ($self, $caller, $name, $title) = @_;
  48
  49         strict->import;
  50         feature->import(':5.14');
  51         warnings->import;
  52         File::Slurp->export_to_level(1, $caller, qw/read_file/);
  53         Gruntmaster::Data->export_to_level(1, $caller);
  54         List::Util->export_to_level(1, $caller, qw/sum/);
  55
  56         no strict 'refs';
  57         *{"${caller}::ISA"} = [__PACKAGE__];
  58         *{"${caller}::VERSION"} = $VERSION;
  59         *{"${caller}::strftime"} = \&POSIX::strftime;
  60         *{"${caller}::debug"} = sub {
  61                 local $Log::Log4perl::caller_depth = $Log::Log4perl::caller_depth + 1;
  62                 $_[0]->{'psgix.logger'}->({qw/level debug message/ => $_[1]})
  63         };
  64         *{"${caller}::reply"} = sub { [200, ['Content-Type' => 'text/plain', 'Cache-Control' => 'no-cache'], [ @_ ] ] };
  65         *{"${caller}::purge"} = sub {
  66                 return unless $ENV{PURGE_HOST};
  67                 my $req = HTTP::Request->new(PURGE => "http://$ENV{PURGE_HOST}$_[0]");
  68                 $ua->request($req)
  69         };
  70
  71         if ($name) {
  72                 $templates{$caller} = { read_templates $name };
  73                 $templates{$caller}{$_}  = header ($_, $title) . $templates{$caller}{$_} for keys $templates{$caller};
  74                 $templates{$caller}{$_} .= footer  $_  for keys $templates{$caller};
  75         }
  76 }
  77
  78 sub import {
  79         return unless $_[0] eq __PACKAGE__;
  80         splice @_, 1, 0, scalar caller;
  81         goto &import_to
  82 }
  83
  84 ##################################################
  85
  86 sub generate{
  87         my ($self, $lang, @args) = @_;
  88
  89         my $htc = HTML::Template::Compiled->new(scalarref => \$templates{$self}{$lang}, default_escape => 'HTML', use_perl => 1);
  90         $self->_generate($htc, $lang, @args);
  91         my $out = $htc->output;
  92         utf8::downgrade($out);
  93         my $vary = 'Accept-Language, ' . $self->vary;
  94         [200, ['Content-Type' => 'text/html', 'Content-Language' => $_[1], 'Vary' => $vary, 'X-Forever' => 1, 'Cache-Control' => 'max-age=' . $self->max_age], [ $out ] ]
  95 }
  96
  97 sub _generate {}
  98
  99 sub vary { '' }
 100
 101 sub max_age { 60 }
 102
 103 sub variants {
 104         return [] unless exists $templates{$_[0]};
 105         [ map { [ $_, 1, 'text/html', undef, undef, $_, undef ]} keys $templates{$_[0]} ]
 106 }
 107
 108 1