-
package C4::Amazon;
-# Copyright 2004-2005 Joshua Ferraro (jmf at kados dot org)
+# Copyright (C) 2006 LibLime
+# <jmf at liblime dot com>
#
# This file is part of Koha.
#
# You should have received a copy of the GNU General Public License along with
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
-#
-# This module dynamically pulls amazon content into Koha. It does not
-# store the data in Koha's database. You'll need to get a developer's key
-# as well as an associate's tag to use it.
-# FIXME: need to write up more docs.
-#
-# To use this module you need to do three things:
-# 1. get a dev key and associate tag from Amazon
-# 2. uncomment the Amazon stuff in opac-detail.pl
-# 3. add the template variables to opac-detail.tmpl
-# here's what's available:
-# ProductDescription
-# ImageUrlMedium
-# ListPrice
-# url
-# loop SimilarProducts (Product)
-# loop Reviews (rating, Summary)
-#
+
use XML::Simple;
use LWP::Simple;
+use LWP::UserAgent;
+use HTTP::Request::Common;
+
use strict;
-require Exporter;
+use warnings;
use vars qw($VERSION @ISA @EXPORT);
-$VERSION = 0.02;
+BEGIN {
+ require Exporter;
+ $VERSION = 0.03;
+ @ISA = qw(Exporter);
+ @EXPORT = qw(
+ &get_amazon_details
+ &check_search_inside
+ );
+}
+
=head1 NAME
C4::Amazon - Functions for retrieving Amazon.com content in Koha
This module provides facilities for retrieving Amazon.com content in Koha
-=cut
+=head2 get_amazon_details
-@ISA = qw(Exporter);
+=over 4
-@EXPORT = qw(
- &get_amazon_details
-);
+my $amazon_details = &get_amazon_details( $xisbn, $record, $marcflavour );
-=head1 get_amazon_details($isbn);
+=back
-=head2 $isbn is a isbn string
+Get editorial reviews, customer reviews, and similar products using Amazon Web Services.
=cut
sub get_amazon_details {
+ my ( $isbn, $record, $marcflavour ) = @_;
+
+ #normalize the ISBN
+ $isbn = _normalize_match_point ($isbn);
+
+ my $upc = _get_amazon_upc($record,$marcflavour);
+ my $ean = _get_amazon_ean($record,$marcflavour);
+
+ # warn "ISBN: $isbn | UPC: $upc | EAN: $ean";
+
+ my ( $id_type, $item_id);
+ if (length($isbn) eq 13) { # if the isbn is 13-digit, search Amazon using EAN
+ $id_type = 'EAN';
+ $item_id = $isbn;
+ }
+ elsif ($isbn) {
+ $id_type = 'ASIN';
+ $item_id = $isbn;
+ }
+ elsif ($upc) {
+ $id_type = 'UPC';
+ $item_id = $upc;
+ }
+ elsif ($ean) {
+ $id_type = 'EAN';
+ $item_id = $upc;
+ }
+ else { # if no ISBN, UPC, or EAN exists, do not even attempt to query Amazon
+ return undef;
+ }
+
+ my $format = substr $record->leader(), 6, 1; # grab the item format to determine Amazon search index
+ my $formats;
+ $formats->{'a'} = 'Books';
+ $formats->{'g'} = 'Video';
+ $formats->{'j'} = 'Music';
+
+ my $search_index = $formats->{$format};
+
+ # Determine which content to grab in the request
+
+ # Determine correct locale
+ my $locale_hashref = {
+ CA => '.ca',
+ DE => '.de',
+ FR => '.fr',
+ JP => '.jp',
+ UK => '.co.uk',
+ US => '.com',
+ };
+
+ my $amazon_locale_syspref = C4::Context->preference('AmazonLocale');
+ my $tld = $locale_hashref->{$amazon_locale_syspref} || '.com'; # default top level domain is .com
+
+ # grab the AWSAccessKeyId: mine is '0V5RRRRJZ3HR2RQFNHR2'
+ my $aws_access_key_id = C4::Context->preference('AWSAccessKeyID');
+
+ #grab the associates tag: mine is 'kadabox-20'
+ my $af_tag=C4::Context->preference('AmazonAssocTag');
+ my $response_group = "Similarities,EditorialReview,Reviews,ItemAttributes,Images";
+ 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=$item_id&IdType=$id_type&ResponseGroup=$response_group";
+ if ($id_type ne 'ASIN') {
+ $url .= "&SearchIndex=$search_index";
+ }
+ # warn $url;
+ my $content = get($url);
+ warn "could not retrieve $url" unless $content;
+ my $xmlsimple = XML::Simple->new();
+ my $response = $xmlsimple->XMLin(
+ $content,
+ forcearray => [ qw(SimilarProduct EditorialReview Review) ],
+ ) unless !$content;
+ return $response;
+}
-my ( $isbn ) = @_;
-
-# insert your dev key here
- $isbn =~ s/(p|-)//g;
-
-# insert your associates tag here
- my $dev_key=C4::Context->preference('AmazonDevKey');
+sub check_search_inside {
+ my $isbn = shift;
+ my $ua = LWP::UserAgent->new(
+ agent => "Mozilla/4.76 [en] (Win98; U)",
+ keep_alive => 1,
+ env_proxy => 1,
+ );
+ my $available = 1;
+ my $uri = "http://www.amazon.com/gp/reader/$isbn/ref=sib_dp_pt/002-7879865-0184864#reader-link";
+ my $req = HTTP::Request->new(GET => $uri);
+ $req->header (
+ 'Accept' => 'image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png, */*',
+ 'Accept-Charset' => 'iso-8859-1,*,utf-8',
+ 'Accept-Language' => 'en-US' );
+ my $res = $ua->request($req);
+ my $content = $res->content();
+ if ($content =~ m/This book is temporarily unavailable/) {
+ undef $available;
+ }
+ return $available;
+}
- #grab the associates tag: mine is '0ZRY7YASKJS280T7YB02'
- my $af_tag=C4::Context->preference('AmazonAssocTag');
+sub _get_amazon_upc {
+ my ($record,$marcflavour) = @_;
+ my (@fields,$upc);
+
+ if ($marcflavour eq 'MARC21') {
+ @fields = $record->field('024');
+ foreach my $field (@fields) {
+ my $indicator = $field->indicator(1);
+ my $upc = _normalize_match_point($field->subfield('a'));
+ if ($indicator == 1 and $upc ne '') {
+ return $upc;
+ }
+ }
+ }
+ else { # assume unimarc if not marc21
+ @fields = $record->field('072');
+ foreach my $field (@fields) {
+ my $upc = _normalize_match_point($field->subfield('a'));
+ if ($upc ne '') {
+ return $upc;
+ }
+ }
+ }
+}
-my $asin=$isbn;
+sub _get_amazon_ean {
+ my ($record,$marcflavour) = @_;
+ my (@fields,$ean);
+
+ if ($marcflavour eq 'MARC21') {
+ @fields = $record->field('024');
+ foreach my $field (@fields) {
+ my $indicator = $field->indicator(1);
+ my $upc = _normalize_match_point($field->subfield('a'));
+ if ($indicator == 3 and $upc ne '') {
+ return $upc;
+ }
+ }
+ }
+ else { # assume unimarc if not marc21
+ @fields = $record->field('073');
+ foreach my $field (@fields) {
+ my $upc = _normalize_match_point($field->subfield('a'));
+ if ($upc ne '') {
+ return $upc;
+ }
+ }
+ }
+}
-# old way from command line: shift @ARGV or die "Usage:perl amazon_http.ol <asin>\n";
+sub _normalize_match_point {
+ my $match_point = shift;
+ (my $normalized_match_point) = $match_point =~ /([\d-]*[X]*)/;
+ $normalized_match_point =~ s/-//g;
-#my $url = "http://xml.amazon.com/onca/xml3?t=" . $af_tag .
-# "&dev-t=" . $dev_key .
-# "&type=heavy&f=xml&" .
-# "AsinSearch=" . $asin;
- my $url = "http://xml.amazon.com/onca/xml3?t=$af_tag&dev-t=$dev_key&type=heavy&f=xml&AsinSearch=" . $asin;
-my $content = get($url);
- warn "could not retrieve $url" unless $content;
-my $xmlsimple = XML::Simple->new();
-my $response = $xmlsimple->XMLin($content,
- forcearray => [ qw(Details Product AvgCustomerRating CustomerReview) ],
-);
-return $response;
+ return $normalized_match_point;
}
+1;
+__END__
+
=head1 NOTES
=head1 AUTHOR
Joshua Ferraro <jmf@liblime.com>
+
=cut
projects / koha_gimpoz / blobdiff