C4/Amazon.pm

   1 package C4::Amazon;
   2 # Copyright (C) 2006 LibLime
   3 # <jmf at liblime dot com>
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it under the
   8 # terms of the GNU General Public License as published by the Free Software
   9 # Foundation; either version 2 of the License, or (at your option) any later
  10 # version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  13 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  14 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License along with
  17 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  18 # Suite 330, Boston, MA  02111-1307 USA
  19
  20 use XML::Simple;
  21 use LWP::Simple;
  22 use LWP::UserAgent;
  23 use HTTP::Request::Common;
  24
  25 use strict;
  26
  27 use vars qw($VERSION @ISA @EXPORT);
  28
  29 BEGIN {
  30     require Exporter;
  31     $VERSION = 0.03;
  32     @ISA = qw(Exporter);
  33     @EXPORT = qw(
  34         &get_amazon_details
  35         &check_search_inside
  36     );
  37 }
  38
  39 =head1 NAME
  40
  41 C4::Amazon - Functions for retrieving Amazon.com content in Koha
  42
  43 =head1 FUNCTIONS
  44
  45 This module provides facilities for retrieving Amazon.com content in Koha
  46
  47 =head1 get_amazon_details($isbn);
  48
  49 =head2 $isbn is a isbn string
  50
  51 =cut
  52
  53 sub get_amazon_details {
  54     my ( $isbn ) = @_;
  55     #normalize the ISBN
  56     $isbn =~ /(\d*[X]*)/;
  57     $isbn = $1;
  58
  59     # Determine which content to grab in the request
  60
  61     # Determine correct locale
  62     my $locale_hashref = {
  63         CA => '.ca',
  64         DE => '.de',
  65         FR => '.fr',
  66         JP => '.jp',
  67         UK => '.co.uk',
  68         US => '.com',
  69     };
  70
  71     my $amazon_locale_syspref = C4::Context->preference('AmazonLocale');
  72     my $tld = $locale_hashref->{$amazon_locale_syspref} || '.com'; # default top level domain is .com
  73
  74     # grab the AWSAccessKeyId: mine is '0V5RRRRJZ3HR2RQFNHR2'
  75     my $aws_access_key_id = C4::Context->preference('AWSAccessKeyID');
  76
  77     #grab the associates tag: mine is 'kadabox-20'
  78     my $af_tag=C4::Context->preference('AmazonAssocTag');
  79     my $response_group = "Similarities,EditorialReview,Reviews,ItemAttributes";
  80     my $asin=$isbn;
  81     my $url = "http://ecs.amazonaws$tld/onca/xml?Service=AWSECommerceService&AWSAccessKeyId=$aws_access_key_id&Operation=ItemLookup&AssociateTag=$af_tag&Version=2007-01-15&ItemId=$asin&ResponseGroup=$response_group";
  82     # warn $url;
  83     my $content = get($url);
  84     warn "could not retrieve $url" unless $content;
  85     my $xmlsimple = XML::Simple->new();
  86     my $response = $xmlsimple->XMLin(
  87         $content,
  88         forcearray => [ qw(SimilarProduct EditorialReview Review) ],
  89     );
  90     return $response;
  91 }
  92
  93 sub check_search_inside {
  94         my $isbn = shift;
  95         my $ua = LWP::UserAgent->new(
  96         agent => "Mozilla/4.76 [en] (Win98; U)",
  97         keep_alive => 1,
  98         env_proxy => 1,
  99         );
 100         my $available = 1;
 101         my $uri = "http://www.amazon.com/gp/reader/$isbn/ref=sib_dp_pt/002-7879865-0184864#reader-link";
 102         my $req = HTTP::Request->new(GET => $uri);
 103         $req->header (
 104                 'Accept' => 'image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*',
 105                 'Accept-Charset' => 'iso-8859-1,*,utf-8',
 106                 'Accept-Language' => 'en-US' );
 107         my $res = $ua->request($req);
 108         my $content = $res->content();
 109         if ($content =~ m/This book is temporarily unavailable/) {
 110             undef $available;
 111         }
 112         return $available;
 113 }
 114
 115 1;
 116 __END__
 117
 118 =head1 NOTES
 119
 120 =head1 AUTHOR
 121
 122 Joshua Ferraro <jmf@liblime.com>
 123
 124 =cut