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package Koha::SharedContent;
# Copyright 2016 BibLibre Morgane Alonso
#
# 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>.
use Modern::Perl;
use JSON qw( from_json to_json );
use HTTP::Request;
use LWP::UserAgent;
use Koha::Serials;
use Koha::Reports;
use C4::Context;
=head1 NAME
Koha::SharedContent - Set of methods for querying Mana KB server
=head1 DESCRIPTION
Package for accessing shared content via Mana KB. Methods here are intended
to build and process queries for requesting from Mana KB server.
=cut
=head2 process_request
Koha::SharedContent::process_request($request);
Send a request to Mana KB server. URL is defined in koha-conf.xml in mana_config
tag. $request parameter must be a HTTP::Request object. See build_request method.
=cut
sub process_request {
my $mana_request = shift;
my $result;
$mana_request->content_type('application/json');
my $userAgent = LWP::UserAgent->new;
if ( $mana_request->method eq "POST" ){
my $content;
if ($mana_request->content) {$content = from_json( $mana_request->content )};
$content->{securitytoken} = C4::Context->preference("ManaToken");
$mana_request->content( to_json($content) );
}
my $response = $userAgent->simple_request($mana_request);
eval { $result = from_json( $response->decoded_content, { utf8 => 1} ); };
$result->{code} = $response->code;
if ( $@ ){
$result->{msg} = $@;
}
if ($response->is_error){
$result->{msg} = "An error occurred, mana server returned: " . $response->message;
}
return $result ;
}
=head2 increment_entity_value
Koha::SharedContent::increment_entity_value($entity_type, $mana_entity_id, $field);
Increment by 1 the field $field of a Mana entity. I.e, this is used to count the number
of Koha instances using a specific entity.
=cut
sub increment_entity_value {
return process_request(build_request('increment', @_));
}
=head2 send_entity
my $result = Koha::SharedContent::send_entity($language, $borrowernumber, $mana_entity_id, $entity_type);
Share a Koha entity (i.e subscription or report) to Mana KB.
=cut
sub send_entity {
my ($lang, $loggedinuser, $resourceid, $resourcetype) = @_;
my $content = prepare_entity_data($lang, $loggedinuser, $resourceid, $resourcetype);
my $result = process_request(build_request('post', $resourcetype, $content));
if ( $result and ($result->{code} eq "200" or $result->{code} eq "201") ) {
my $packages = "Koha::".ucfirst($resourcetype)."s";
my $resource = $packages->find($resourceid);
eval { $resource->set( { mana_id => $result->{id} } )->store };
}
return $result;
}
=head3 comment_entity
my $result = Koha::SharedContent::comment_entity($resource_id, $resource_type, $comment);
Send a comment about a Mana entity.
=cut
sub comment_entity {
my ($resourceid, $resourcetype, $comment) = @_;
my $result = process_request(build_request('post', 'resource_comment',
{ resource_id => $resourceid, resource_type => $resourcetype, message => $comment }));
return $result;
}
=head2 prepare_entity_data
$data = prepare_entity_data($language, $borrowernumber, $mana_entity_id, $entity_type);
Prepare Koha entity data to be sent to Mana KB.
=cut
sub prepare_entity_data {
my ($lang, $loggedinuser, $ressourceid, $ressourcetype) = @_;
$lang ||= C4::Context->preference('language');
my $mana_email;
if ( $loggedinuser ne 0 ) {
my $borrower = Koha::Patrons->find($loggedinuser);
$mana_email = $borrower->first_valid_email_address
|| Koha::Libraries->find( C4::Context->userenv->{'branch'} )->branchemail
}
$mana_email = C4::Context->preference('KohaAdminEmailAddress')
if ( ( not defined($mana_email) ) or ( $mana_email eq '' ) );
my %versions = C4::Context::get_versions();
my $mana_info = {
language => $lang,
kohaversion => $versions{'kohaVersion'},
exportemail => $mana_email
};
my $ressource_mana_info;
my $packages = "Koha::".ucfirst($ressourcetype)."s";
my $package = "Koha::".ucfirst($ressourcetype);
$ressource_mana_info = $package->get_sharable_info($ressourceid);
$ressource_mana_info = { %$ressource_mana_info, %$mana_info };
return $ressource_mana_info;
}
=head2 get_entity_by_id
my $entity = Koha::SharedContent::get_entity_by_id($entity_type, $mana_entity_id, [{usecomments => 1}]);
Retrieve a Mana entity to be imported into Koha. Add {usecomments => 1} to tell Mana to
embed all user reviews.
=cut
sub get_entity_by_id {
return process_request(build_request('getwithid', @_));
}
=head2 search_entities
my $result = Koha::SharedContent::search_entities( $entity_type, $search_params );
my $entities = $result->{data};
Search entities on ManaKB.
=cut
sub search_entities {
return process_request(build_request('get', @_));
}
=head2 build_request
$request = build_request($mana_method, [$param1, $param2, ...]);
Create a HTTP::Request object to be passed to process_request.
=cut
sub build_request {
my $type = shift;
my $resource = shift;
my $mana_url = get_sharing_url();
if ( $type eq 'get' ) {
my $params = shift;
$params = join '&',
map { defined $params->{$_} && $params->{$_} ne '' ? $_ . "=" . $params->{$_} : () }
keys %$params;
my $url = "$mana_url/$resource.json?$params";
return HTTP::Request->new( GET => $url );
}
if ( $type eq 'getwithid' ) {
my $id = shift;
my $params = shift;
$params = join '&',
map { defined $params->{$_} && $params->{$_} ne '' ? $_ . "=" . $params->{$_} : () }
keys %$params;
my $url = "$mana_url/$resource/$id.json?$params";
return HTTP::Request->new( GET => $url );
}
if ( $type eq 'post' ) {
my $content = shift;
my $url = "$mana_url/$resource.json";
my $request = HTTP::Request->new( POST => $url );
my $json = to_json( $content, { utf8 => 1 } );
$request->content($json);
return $request;
}
if ( $type eq 'increment' ) {
my $id = shift;
my $field = shift;
my $step = shift;
my $param;
$param->{step} = $step || 1;
$param->{id} = $id;
$param->{resource} = $resource;
$param = join '&',
map { defined $param->{$_} ? $_ . "=" . $param->{$_} : () }
keys %$param;
my $url = "$mana_url/$resource/$id.json/increment/$field?$param";
my $request = HTTP::Request->new( POST => $url );
}
}
=head2 get_sharing_url
my $mana_url = get_sharing_url();
Get the Mana KB server URL set in koha config file.
=cut
sub get_sharing_url {
return C4::Context->config('mana_config');
}
1;