Koha/SharedContent.pm

   1 package Koha::SharedContent;
   2
   3 # Copyright 2016 BibLibre Morgane Alonso
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20 use Modern::Perl;
  21 use JSON;
  22 use HTTP::Request;
  23 use LWP::UserAgent;
  24
  25 use Koha::Serials;
  26 use Koha::Reports;
  27 use C4::Context;
  28
  29 =head1 NAME
  30
  31 Koha::SharedContent - Set of methods for querying Mana KB server
  32
  33 =head1 DESCRIPTION
  34
  35 Package for accessing shared content via Mana KB. Methods here are intended
  36 to build and process queries for requesting from Mana KB server.
  37
  38 =cut
  39
  40 =head2 process_request
  41
  42 Koha::SharedContent::process_request($request);
  43
  44 Send a request to Mana KB server. URL is defined in koha-conf.xml in mana_config
  45 tag. $request parameter must be a HTTP::Request object. See build_request method.
  46
  47 =cut
  48
  49 sub process_request {
  50     my $mana_request = shift;
  51     my $result;
  52     $mana_request->content_type('application/json');
  53     my $userAgent = LWP::UserAgent->new;
  54     if ( $mana_request->method eq "POST" ){
  55         my $content;
  56         if ($mana_request->content) {$content = from_json( $mana_request->content )};
  57         $content->{securitytoken} = C4::Context->preference("ManaToken");
  58         $mana_request->content( to_json($content) );
  59     }
  60
  61     my $response = $userAgent->simple_request($mana_request);
  62     eval { $result = from_json( $response->decoded_content, { utf8 => 1} ); };
  63     $result->{code} = $response->code;
  64     if ( $@ ){
  65         $result->{msg} = $@;
  66     }
  67     if ($response->is_error){
  68         $result->{msg} = "An error occurred, mana server returned: " . $response->message;
  69     }
  70     return $result ;
  71 }
  72
  73 =head2 increment_entity_value
  74
  75 Koha::SharedContent::increment_entity_value($entity_type, $mana_entity_id, $field);
  76
  77 Increment by 1 the field $field of a Mana entity. I.e, this is used to count the number
  78 of Koha instances using a specific entity.
  79
  80 =cut
  81
  82 sub increment_entity_value {
  83     return process_request(build_request('increment', @_));
  84 }
  85
  86 =head2 send_entity
  87
  88 my $result = Koha::SharedContent::send_entity($language, $borrowernumber, $mana_entity_id, $entity_type);
  89
  90 Share a Koha entity (i.e subscription or report) to Mana KB.
  91
  92 =cut
  93
  94 sub send_entity {
  95     my ($lang, $loggedinuser, $resourceid, $resourcetype) = @_;
  96
  97     my $content = prepare_entity_data($lang, $loggedinuser, $resourceid, $resourcetype);
  98
  99     my $result = process_request(build_request('post', $resourcetype, $content));
 100
 101     if ( $result and ($result->{code} eq "200" or $result->{code} eq "201") ) {
 102         my $packages = "Koha::".ucfirst($resourcetype)."s";
 103         my $resource = $packages->find($resourceid);
 104         eval { $resource->set( { mana_id => $result->{id} } )->store };
 105     }
 106     return $result;
 107 }
 108
 109 =head3 comment_entity
 110
 111 my $result = Koha::SharedContent::comment_entity($resource_id, $resource_type, $comment);
 112
 113 Send a comment about a Mana entity.
 114
 115 =cut
 116
 117 sub comment_entity {
 118     my ($resourceid, $resourcetype, $comment) = @_;
 119
 120     my $result = process_request(build_request('post', 'resource_comment',
 121             { resource_id => $resourceid, resource_type => $resourcetype, message => $comment }));
 122
 123     return $result;
 124 }
 125
 126 =head2 prepare_entity_data
 127
 128 $data = prepare_entity_data($language, $borrowernumber, $mana_entity_id, $entity_type);
 129
 130 Prepare Koha entity data to be sent to Mana KB.
 131
 132 =cut
 133
 134 sub prepare_entity_data {
 135     my ($lang, $loggedinuser, $ressourceid, $ressourcetype) = @_;
 136     $lang ||= C4::Context->preference('language');
 137
 138     my $mana_email;
 139     if ( $loggedinuser ne 0 ) {
 140         my $borrower = Koha::Patrons->find($loggedinuser);
 141         $mana_email = $borrower->first_valid_email_address
 142             || Koha::Libraries->find( C4::Context->userenv->{'branch'} )->branchemail
 143     }
 144     $mana_email = C4::Context->preference('KohaAdminEmailAddress')
 145       if ( ( not defined($mana_email) ) or ( $mana_email eq '' ) );
 146
 147     my %versions = C4::Context::get_versions();
 148
 149     my $mana_info = {
 150         language    => $lang,
 151         kohaversion => $versions{'kohaVersion'},
 152         exportemail => $mana_email
 153     };
 154
 155     my $ressource_mana_info;
 156     my $packages = "Koha::".ucfirst($ressourcetype)."s";
 157     my $package = "Koha::".ucfirst($ressourcetype);
 158     $ressource_mana_info = $package->get_sharable_info($ressourceid);
 159     $ressource_mana_info = { %$ressource_mana_info, %$mana_info };
 160
 161     return $ressource_mana_info;
 162 }
 163
 164 =head2 get_entity_by_id
 165
 166 my $entity = Koha::SharedContent::get_entity_by_id($entity_type, $mana_entity_id, [{usecomments => 1}]);
 167
 168 Retrieve a Mana entity to be imported into Koha. Add {usecomments => 1} to tell Mana to
 169 embed all user reviews.
 170
 171 =cut
 172
 173 sub get_entity_by_id {
 174     return process_request(build_request('getwithid', @_));
 175 }
 176
 177 =head2 search_entities
 178
 179 my $result = Koha::SharedContent::search_entities( $entity_type, $search_params );
 180 my $entities = $result->{data};
 181
 182 Search entities on ManaKB.
 183
 184 =cut
 185
 186 sub search_entities {
 187     return process_request(build_request('get', @_));
 188 }
 189
 190 =head2 build_request
 191
 192 $request = build_request($mana_method, [$param1, $param2, ...]);
 193
 194 Create a HTTP::Request object to be passed to process_request.
 195
 196 =cut
 197
 198 sub build_request {
 199     my $type = shift;
 200     my $resource = shift;
 201     my $mana_url = get_sharing_url();
 202
 203     if ( $type eq 'get' ) {
 204         my $params = shift;
 205         $params = join '&',
 206             map { defined $params->{$_} && $params->{$_} ne '' ? $_ . "=" . $params->{$_} : () }
 207             keys %$params;
 208         my $url = "$mana_url/$resource.json?$params";
 209         return HTTP::Request->new( GET => $url );
 210     }
 211
 212     if ( $type eq 'getwithid' ) {
 213         my $id = shift;
 214         my $params = shift;
 215         $params = join '&',
 216             map { defined $params->{$_} && $params->{$_} ne '' ? $_ . "=" . $params->{$_} : () }
 217             keys %$params;
 218
 219         my $url = "$mana_url/$resource/$id.json?$params";
 220         return HTTP::Request->new( GET => $url );
 221     }
 222
 223     if ( $type eq 'post' ) {
 224         my $content  = shift;
 225
 226         my $url = "$mana_url/$resource.json";
 227         my $request = HTTP::Request->new( POST => $url );
 228
 229         my $json = to_json( $content, { utf8 => 1 } );
 230         $request->content($json);
 231
 232         return $request;
 233     }
 234
 235     if ( $type eq 'increment' ) {
 236         my $id       = shift;
 237         my $field    = shift;
 238         my $step     = shift;
 239         my $param;
 240
 241         $param->{step} = $step || 1;
 242         $param->{id} = $id;
 243         $param->{resource} = $resource;
 244         $param = join '&',
 245            map { defined $param->{$_} ? $_ . "=" . $param->{$_} : () }
 246                keys %$param;
 247         my $url = "$mana_url/$resource/$id.json/increment/$field?$param";
 248         my $request = HTTP::Request->new( POST => $url );
 249
 250     }
 251 }
 252
 253 =head2 get_sharing_url
 254
 255 my $mana_url = get_sharing_url();
 256
 257 Get the Mana KB server URL set in koha config file.
 258
 259 =cut
 260
 261 sub get_sharing_url {
 262     return C4::Context->config('mana_config');
 263 }
 264
 265 1;