# ---------------------------------------------------------------
# Copyright (C) 2009 David Christensen <david.a.christensen@gmail.com>
-# Copyright (C) 2009 Dan Scott <dscott@laurentian.ca>
+# Copyright (C) 2009-2011 Dan Scott <dscott@laurentian.ca>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# These URLs are always the same for OpenLibrary, so there's no advantage to
# pulling from opensrf.xml; we hardcode them here
-my $base_url = 'http://openlibrary.org/api/books?details=true&bibkeys=ISBN:';
+
+# jscmd=details is unstable but includes goodies such as Table of Contents
+my $base_url_details = 'http://openlibrary.org/api/books?format=json&jscmd=details&bibkeys=ISBN:';
+
+# jscmd=data is stable and contains links to ebooks, excerpts, etc
+my $base_url_data = 'http://openlibrary.org/api/books?format=json&jscmd=data&bibkeys=ISBN:';
+
my $cover_base_url = 'http://covers.openlibrary.org/b/isbn/';
sub new {
sub jacket_small {
my( $self, $key ) = @_;
return $self->send_img(
- $self->fetch_cover_response('-S.jpg', $key));
+ $self->fetch_cover_response('small', $key));
}
sub jacket_medium {
my( $self, $key ) = @_;
return $self->send_img(
- $self->fetch_cover_response('-M.jpg', $key));
+ $self->fetch_cover_response('medium', $key));
}
sub jacket_large {
my( $self, $key ) = @_;
return $self->send_img(
- $self->fetch_cover_response('-L.jpg', $key));
+ $self->fetch_cover_response('large', $key));
}
# --------------------------------------------------------------------------
+sub ebooks_html {
+ my( $self, $key ) = @_;
+ my $book_data_json = $self->fetch_data_response($key)->content();
+
+ $logger->debug("$key: " . $book_data_json);
+
+ my $ebook_html;
+
+ my $book_data = OpenSRF::Utils::JSON->JSON2perl($book_data_json);
+ my $book_key = (keys %$book_data)[0];
+
+ # We didn't find a matching book; short-circuit our response
+ if (!$book_key) {
+ $logger->debug("$key: no found book");
+ return 0;
+ }
+
+ my $ebooks_json = $book_data->{$book_key}->{ebooks};
+
+ # No ebooks are available for this book; short-circuit
+ if (!$ebooks_json or !scalar(@$ebooks_json)) {
+ $logger->debug("$key: no ebooks");
+ return 0;
+ }
+
+ # Check the availability of the ebooks
+ my $available = $ebooks_json->[0]->{'availability'} || '';
+ if (!$available) {
+ $logger->debug("$key: no available ebooks");
+ return 0;
+ }
+
+ # Build a basic list of available ebook types and their URLs
+ # ebooks appears to be an array containing one element - a hash
+
+ # First element of the hash is 'read_url' which is a URL to
+ # Internet Archive online reader
+ my $stream_url = $ebooks_json->[0]->{'read_url'} || '';
+ if ($stream_url) {
+ $ebook_html .= "<li class='ebook_stream'><a href='$stream_url'>Read online</a></li>\n";
+ $logger->debug("$key: stream URL = $stream_url");
+ }
+
+ my $ebook_formats = $ebooks_json->[0]->{'formats'} || '';
+ # Next elements are various ebook formats that are available
+ foreach my $ebook (keys %{$ebook_formats}) {
+ if ($ebook_formats->{$ebook} eq 'read_url') {
+ next;
+ }
+ $ebook_html .= "<li class='ebook_$ebook'><a href='" .
+ $ebook_formats->{$ebook}->{'url'} . "'>" . uc($ebook) . "</a></li>\n";
+ }
+
+ $logger->debug("$key: $ebook_html");
+ $self->send_html("<ul class='ebooks'>$ebook_html</ul>");
+}
+
+sub excerpt_html {
+ my( $self, $key ) = @_;
+ my $book_details_json = $self->fetch_details_response($key)->content();
+
+ $logger->debug("$key: $book_details_json");
+
+ my $excerpt_html;
+
+ my $book_details = OpenSRF::Utils::JSON->JSON2perl($book_details_json);
+ my $book_key = (keys %$book_details)[0];
+
+ # We didn't find a matching book; short-circuit our response
+ if (!$book_key) {
+ $logger->debug("$key: no found book");
+ return 0;
+ }
+
+ my $first_sentence = $book_details->{$book_key}->{first_sentence};
+ if ($first_sentence) {
+ $excerpt_html .= "<div class='sentence1'>$first_sentence</div>\n";
+ }
+
+ my $excerpts_json = $book_details->{$book_key}->{excerpts};
+ if ($excerpts_json && scalar(@$excerpts_json)) {
+ # Load up excerpt text with comments in tooltip
+ foreach my $excerpt (@$excerpts_json) {
+ my $text = $excerpt->{text};
+ my $cmnt = $excerpt->{comment};
+ $excerpt_html .= "<div class='ac_excerpt' title='$text'>$cmnt</div>\n";
+ }
+ }
+
+ if (!$excerpt_html) {
+ return 0;
+ }
+
+ $logger->debug("$key: $excerpt_html");
+ $self->send_html("<div class='ac_excerpts'>$excerpt_html</div>");
+}
+
=head1
OpenLibrary returns a JSON hash of zero or more book responses matching our
sub toc_html {
my( $self, $key ) = @_;
- my $book_details_json = $self->fetch_response($key)->content();
-
-
- # Trim the "var _OlBookInfo = " declaration that makes this
- # invalid JSON
- $book_details_json =~ s/^.+?({.*?});$/$1/s;
+ my $book_details_json = $self->fetch_details_response($key)->content();
$logger->debug("$key: " . $book_details_json);
my $page_number = $chapter->{pagenum} || '';
$toc_html .= '<tr>' .
- "<td style='text-align: right;'>$label</td>" .
- "<td style='text-align: left; padding-right: 2em;'>$title</td>" .
- "<td style='text-align: right;'>$page_number</td>" .
+ "<td class='toc_label'>$label</td>" .
+ "<td class='toc_title'>$title</td>" .
+ "<td class='toc_page'>$page_number</td>" .
"</tr>\n";
}
sub toc_json {
my( $self, $key ) = @_;
my $toc = $self->send_json(
- $self->fetch_response($key)
+ $self->fetch_details_response($key)
);
}
}
# returns the HTTP response object from the URL fetch
-sub fetch_response {
+sub fetch_data_response {
my( $self, $key ) = @_;
- my $url = $base_url . "$key";
+ my $url = $base_url_data . "$key";
+ my $response = $AC->get_url($url);
+ return $response;
+}
+# returns the HTTP response object from the URL fetch
+sub fetch_details_response {
+ my( $self, $key ) = @_;
+ my $url = $base_url_details . "$key";
my $response = $AC->get_url($url);
return $response;
}
# returns the HTTP response object from the URL fetch
sub fetch_cover_response {
my( $self, $size, $key ) = @_;
- my $url = $cover_base_url . "$key$size";
- return $AC->get_url($url);
+
+ my $response = $self->fetch_data_response($key)->content();
+
+ my $book_data = OpenSRF::Utils::JSON->JSON2perl($response);
+ my $book_key = (keys %$book_data)[0];
+
+ # We didn't find a matching book; short-circuit our response
+ if (!$book_key) {
+ $logger->debug("$key: no found book");
+ return 0;
+ }
+
+ my $covers_json = $book_data->{$book_key}->{cover};
+ if (!$covers_json) {
+ $logger->debug("$key: no covers for this book");
+ return 0;
+ }
+
+ $logger->debug("$key: " . $covers_json->{$size});
+ return $AC->get_url($covers_json->{$size}) || 0;
}
projects / evergreen-equinox.git / blobdiff