text: # Copyright Tamil s.a.r.l. 2008-2015
  # Copyright Biblibre 2008-2015
  # Copyright The National Library of Finland, University of Helsinki 2016-2017
  #
  # This file is part of Koha.
  #
  # Koha is free software; you can redistribute it and/or modify it
  # under the terms of the GNU General Public License as published by
  # the Free Software Foundation; either version 3 of the License, or
  # (at your option) any later version.
  #
  # Koha is distributed in the hope that it will be useful, but
  # WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with Koha; if not, see <http://www.gnu.org/licenses>.
  
  
  package Koha::OAI::Server::ResumptionToken;
  
  use Modern::Perl;
  use HTTP::OAI;
  
  use base ("HTTP::OAI::ResumptionToken");
  
  
  # Extends HTTP::OAI::ResumptionToken
  # A token is identified by:
  # - metadataPrefix
  # - from
  # - until
  # - offset
  # - deleted
  
  sub new {
      my ($class, %args) = @_;
  
      my $self = $class->SUPER::new(%args);
  
      my ($metadata_prefix, $offset, $from, $until, $set, $deleted, $deleted_count);
      if ( $args{ resumptionToken } ) {
          ($metadata_prefix, $offset, $from, $until, $set, $deleted, $deleted_count)
              = split( '/', $args{resumptionToken} );
      }
      else {
          $metadata_prefix = $args{ metadataPrefix };
          $from = $args{ from } || '1970-01-01';
          $until = $args{ until };
          unless ( $until) {
              my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday) = gmtime( time );
              $until = sprintf( "%.4d-%.2d-%.2d", $year+1900, $mon+1,$mday );
          }
          #Add times to the arguments, when necessary, so they correctly match against the DB timestamps
          $from .= 'T00:00:00Z' if length($from) == 10;
          $until .= 'T23:59:59Z' if length($until) == 10;
          $offset = $args{ offset } || 0;
          $set = $args{ set } || '';
          $deleted = defined $args{ deleted } ? $args{ deleted } : 1;
          $deleted_count = defined $args{ deleted_count } ? $args{ deleted_count } : 0;
      }
  
      $self->{ metadata_prefix } = $metadata_prefix;
      $self->{ offset          } = $offset;
      $self->{ from            } = $from;
      $self->{ until           } = $until;
      $self->{ set             } = $set;
      $self->{ from_arg        } = _strip_UTC_designators($from);
      $self->{ until_arg       } = _strip_UTC_designators($until);
      $self->{ deleted         } = $deleted;
      $self->{ deleted_count   } = $deleted_count;
  
      $self->resumptionToken(
          join( '/', $metadata_prefix, $offset, $from, $until, $set, $deleted, $deleted_count ) );
      $self->cursor( $offset );
  
      return $self;
  }
  
  sub _strip_UTC_designators {
      my ( $timestamp ) = @_;
      $timestamp =~ s/T/ /g;
      $timestamp =~ s/Z//g;
      return $timestamp;
  }
  
  1;
  