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147 lines
4.4 KiB
147 lines
4.4 KiB
package C4::External::BakerTaylor;
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# Copyright (C) 2008 LibLime
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# <jmf at liblime dot com>
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#
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# This file is part of Koha.
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#
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# Koha is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# Koha is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Koha; if not, see <http://www.gnu.org/licenses>.
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use XML::Simple;
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use LWP::Simple qw( get );
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use C4::Context;
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use Modern::Perl;
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use vars qw(%EXPORT_TAGS $VERSION);
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our (@ISA, @EXPORT_OK);
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BEGIN {
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require Exporter;
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@ISA = qw(Exporter);
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$VERSION = 3.07.00.049;
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@EXPORT_OK = qw(availability content_cafe_url image_url link_url http_jacket_link);
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}
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# These variables are plack safe: they are initialized each time
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my ( $user, $pass, $agent, $image_url, $link_url );
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sub _initialize {
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$user = (@_ ? shift : C4::Context->preference('BakerTaylorUsername') ) || ''; # LL17984
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$pass = (@_ ? shift : C4::Context->preference('BakerTaylorPassword') ) || ''; # CC82349
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$link_url = (@_ ? shift : C4::Context->preference('BakerTaylorBookstoreURL'));
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$image_url = "https://contentcafe2.btol.com/ContentCafe/Jacket.aspx?UserID=$user&Password=$pass&Options=Y&Return=T&Type=S&Value=";
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$agent = "Koha/$VERSION [en] (Linux)";
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#"Mozilla/4.76 [en] (Win98; U)", # if for some reason you want to go stealth, you might prefer this
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}
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sub image_url {
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_initialize();
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($user and $pass) or return;
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my $isbn = (@_ ? shift : '');
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$isbn =~ s/(p|-)//g; # sanitize
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return $image_url . $isbn;
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}
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sub link_url {
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_initialize();
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my $isbn = (@_ ? shift : '');
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$isbn =~ s/(p|-)//g; # sanitize
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$link_url or return;
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return $link_url . $isbn;
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}
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sub content_cafe_url {
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_initialize();
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($user and $pass) or return;
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my $isbn = (@_ ? shift : '');
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$isbn =~ s/(p|-)//g; # sanitize
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return "https://contentcafe2.btol.com/ContentCafeClient/ContentCafe.aspx?UserID=$user&Password=$pass&Options=Y&ItemKey=$isbn";
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}
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sub http_jacket_link {
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_initialize();
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my $isbn = shift or return;
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$isbn =~ s/(p|-)//g; # sanitize
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my $image = availability($isbn);
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my $alt = "Buy this book";
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$image and $image = qq(<img class="btjacket" alt="$alt" src="$image" />);
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my $link = &link_url($isbn);
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unless ($link) {return $image || '';}
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return sprintf qq(<a class="btlink" href="%s">%s</a>),$link,($image||$alt);
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}
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sub availability {
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_initialize();
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my $isbn = shift or return;
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($user and $pass) or return;
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$isbn =~ s/(p|-)//g; # sanitize
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my $url = "https://contentcafe2.btol.com/ContentCafe/InventoryAvailability.asmx/CheckInventory?UserID=$user&Password=$pass&Value=$isbn";
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my $content = get($url);
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warn "could not retrieve $url" unless $content;
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my $xmlsimple = XML::Simple->new();
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my $result = $xmlsimple->XMLin($content);
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if ($result->{Error}) {
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warn "Error returned to " . __PACKAGE__ . " : " . $result->{Error};
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}
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my $avail = $result->{Availability};
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return ($avail and $avail !~ /^false$/i) ? &image_url($isbn) : 0;
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}
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1;
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__END__
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=head1 NAME
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C4::External::BakerTaylor
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=head1 DESCRIPTION
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Functions for retrieving content from Baker and Taylor, inventory availability and "Content Cafe".
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The settings for this module are controlled by System Preferences:
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These can be overridden for testing purposes using the initialize function.
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=head1 FUNCTIONS
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=head2 availability($isbn);
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$isbn is a isbn string
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=head1 NOTES
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A request with failed authentication might see this back from Baker + Taylor:
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<?xml version="1.0" encoding="utf-8"?>
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<InventoryAvailability xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" DateTime="2008-03-07T22:01:25.6520429-05:00" xmlns="http://ContentCafe2.btol.com">
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<Key Type="Undefined">string</Key>
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<Availability>false</Availability>
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<Error>Invalid UserID</Error>
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</InventoryAvailability>
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Such response will trigger a warning for each request (potentially many). Point being, do not leave this module configured with incorrect username and password in production.
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=head1 SEE ALSO
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LWP::UserAgent
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=head1 AUTHOR
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Joe Atzberger
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atz AT liblime DOT com
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=cut
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