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lib/File/Gettext/Storage.pm  view on Meta::CPAN

package File::Gettext::Storage;

use namespace::autoclean;

use File::Basename             qw( basename );
use File::DataClass::Constants qw( EXCEPTION_CLASS FALSE NUL TRUE );
use File::DataClass::Functions qw( is_stale merge_file_data throw );
use File::DataClass::Types     qw( Object );
use File::Gettext;
use Try::Tiny;
use Unexpected::Functions      qw( NothingUpdated Unspecified );
use Moo;

has 'gettext' => is => 'lazy', isa => Object,
   builder    => sub { File::Gettext->new( builder => $_[ 0 ]->schema ) };

has 'schema'  => is => 'ro',   isa => Object,  required => TRUE,
   handles    => [ qw( cache language ) ],     weak_ref => TRUE;

has 'storage' => is => 'ro',   isa => Object,  required => TRUE,
   handles    => [ qw( extn meta_pack meta_unpack
                       read_file txn_do validate_params ) ];

# Private functions
my $_get_attributes = sub {
   my ($condition, $source) = @_;

   return grep { not m{ \A _ }msx
                 and $_ ne 'id' and $_ ne 'name'
                 and $condition->( $_ ) } @{ $source->attributes || [] };
};

# Private methods
my $_extn = sub {
   my ($self, $path) = @_; $path //= NUL;

   my $extn = (split m{ \. }mx, ("${path}" // NUL))[ -1 ];

   return $extn ? ".${extn}" : $self->extn;
};

my $_gettext = sub {
   my ($self, $path) = @_; $path or throw Unspecified, [ 'path name' ];

   my $gettext = $self->gettext; my $extn = $self->$_extn( $path );

   $gettext->set_path( $self->language, basename( "${path}", $extn ) );

   return $gettext;
};

my $_create_or_update = sub {
   my ($self, $path, $result, $updating) = @_;

   my $source    = $result->can( 'result_source' )
                 ? $result->result_source : $result->_resultset->source;
   my $condition = sub { not $source->language_dependent->{ $_[ 0 ] } };
   my $updated   = $self->storage->create_or_update
      ( $path, $result, $updating, $condition );
   my $rs        = $self->$_gettext( $path )->resultset;
   my $element   = $source->name;

   $condition = sub { $source->language_dependent->{ $_[ 0 ] } };

   for my $attr_name ($_get_attributes->( $condition, $source )) {
      my $msgstr = $result->$attr_name() or next;
      my $attrs  = { msgctxt => "${element}.${attr_name}",
                     msgid   => $result->name,
                     msgstr  => [ $msgstr ], };

      $attrs->{name} = $rs->storage->make_key( $attrs ); my $name;

      try {
         $name = $updating ? $rs->create_or_update( $attrs )
                           : $rs->create( $attrs );
      }
      catch { $_->class ne NothingUpdated and throw $_ };

      $updated ||= $name ? TRUE : FALSE;
   }

   $updating and not $updated and throw NothingUpdated, level => 4;
   $updated  and $path->touch;
   return $updated;
};

my $_get_key_and_newest = sub {
   my ($self, $paths) = @_;

   my $gettext = $self->gettext; my $key; my $newest = 0; my $valid = TRUE;

   for my $path (grep { length } map { "${_}" } @{ $paths }) {
      $key .= $key ? "~${path}" : $path;

      my $mtime = $self->cache->get_mtime( $path );

      if ($mtime) { $mtime > $newest and $newest = $mtime }
      else { $valid = FALSE }

      my $file      = basename( "${path}", $self->$_extn( $path ) );
      my $lang_file = $gettext->object_file( $self->language, $file );

      if (defined ($mtime = $self->cache->get_mtime( "${lang_file}" ))) {
         if ($mtime) {
            $key .= $key ? "~${lang_file}" : "${lang_file}";
            $mtime > $newest and $newest = $mtime;
         }
      }
      else {
         if ($lang_file->exists and $lang_file->is_file) {
            $key .= $key ? "~${lang_file}" : "${lang_file}"; $valid = FALSE;
         }
         else { $self->cache->set_mtime( "${lang_file}", 0 ) }
      }
   }

   return ($key, $valid ? $newest : undef);
};

my $_load_gettext = sub {
   my ($self, $data, $path) = @_;

   my $gettext = $self->$_gettext( $path ); $gettext->path->is_file or return;

   my $gettext_data = $gettext->load->{ $gettext->source_name };

   for my $key (keys %{ $gettext_data }) {
      my ($msgctxt, $msgid)     = $gettext->storage->decompose_key( $key );
      my ($element, $attr_name) = split m{ [\.] }msx, $msgctxt, 2;

      ($element and $attr_name and $msgid) or next;

      $data->{ $element }->{ $msgid }->{ $attr_name }
         = $gettext_data->{ $key }->{msgstr}->[ 0 ];
   }

   return $gettext->path->stat->{mtime};
};

# Public methods
sub delete {
   my ($self, $path, $result) = @_;

   my $source    = $result->can( 'result_source' )
                 ? $result->result_source : $result->_resultset->source;
   my $condition = sub { $source->language_dependent->{ $_[ 0 ] } };
   my $deleted   = $self->storage->delete( $path, $result );
   my $rs        = $self->$_gettext( $path )->resultset;
   my $element   = $source->name;

   for my $attr_name ($_get_attributes->( $condition, $source )) {
      my $attrs  = { msgctxt => "${element}.${attr_name}",
                     msgid   => $result->name, };
      my $name   = $rs->storage->make_key( $attrs );

      $name      = $rs->delete( { name => $name, optional => TRUE } );
      $deleted ||= $name ? TRUE : FALSE;
   }

   return $deleted;
}

sub dump {
   my ($self, $path, $data) = @_; $self->validate_params( $path, TRUE );

   my $gettext      = $self->$_gettext( $path );
   my $gettext_data = $gettext->path->exists ? $gettext->load : {};

   for my $source (values %{ $self->schema->source_registrations }) {
      my $element = $source->name; my $element_ref = $data->{ $element };

      for my $msgid (keys %{ $element_ref }) {
         for my $attr_name (keys %{ $source->language_dependent || {} }) {
            my $msgstr = delete $element_ref->{ $msgid }->{ $attr_name }
                      or next;
            my $attrs  = { msgctxt => "${element}.${attr_name}",
                           msgid   => $msgid,
                           msgstr  => [ $msgstr ] };
            my $key    = $gettext->storage->make_key( $attrs );

            $gettext_data->{ $gettext->source_name }->{ $key } = $attrs;
         }
      }
   }

   $gettext->dump( { data => $gettext_data } );

   return $self->storage->dump( $path, $data );
}