112 lines
3.4 KiB
JavaScript
112 lines
3.4 KiB
JavaScript
var express = require('express');
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var router = express.Router();
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var paginate = require('../util/paginate');
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var HashMap = require('hashmap').HashMap;
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/* All books */
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router.get('/', function(req, res) {
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var books = new HashMap();
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req.paginate = new paginate(req);
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var qparams = new Array();
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var query = 'SELECT books.id as id,title,series_index,name as series_name,series.id AS series_id'+
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' FROM books' +
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' LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book' +
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' LEFT OUTER JOIN series ON series.id = books_series_link.series';
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query = req.paginate.appendInitialQuery(query,'books.sort',qparams,true);
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query+= ' ORDER BY books.sort LIMIT ? OFFSET ?';
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qparams.push(req.paginate.perpage + 1);
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qparams.push(req.paginate.offset);
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req.db.each(query, qparams,
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function (err, book) {
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if (books.count() < req.paginate.perpage) {
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books.set(''+book.id, book);
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} else
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req.paginate.hasNext = true; /* more than perpage */
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},
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function(err) {
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if (err) console.log(err);
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res.links(req.paginate.links());
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/* query books authors */
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var qAuthors = 'SELECT books_authors_link.book as book,authors.id as id,name FROM authors, books_authors_link WHERE books_authors_link.author = authors.id AND books_authors_link.book IN (';
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for (var i=0;i<books.count()-1;i++) qAuthors+='?,';
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qAuthors+='?)';
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req.db.each(qAuthors, books.keys(),
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function(err, author) {
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var book = books.get(''+author.book);
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if (!book.authors) book.authors = new Array();
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book.authors.push(author);
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},
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function(err) {
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if (err) console.log(err);
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res.json(books.values());
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}
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);
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}
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);
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});
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/* Single book */
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router.get('/:id', function(req, res) {
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var book, authors, tags;
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var queries = 3;
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var callback = function() {
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if (queries == 0) {
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book.authors = authors;
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book.tags = tags;
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res.format({
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html: function(){
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res.render('book', book);
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},
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json: function(){
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res.json(book);
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}
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});
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}
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};
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// book
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req.db.get('SELECT books.id AS id,title,timestamp,pubdate,series_index,isbn,lccn,path,uuid,has_cover,' +
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'languages.lang_code,format,uncompressed_size,data.name AS data_name,series.name AS series_name,' +
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'series.id AS series_id FROM books ' +
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' LEFT OUTER JOIN books_languages_link ON books_languages_link.book = books.id ' +
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' LEFT OUTER JOIN languages ON languages.id = books_languages_link.lang_code ' +
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' LEFT OUTER JOIN data ON data.book = books.id ' +
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' LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book ' +
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' LEFT OUTER JOIN series ON series.id = books_series_link.series ' +
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' WHERE books.id = ?', req.params.id,
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function(err, row) {
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if (err) console.log('ERR book: '+err);
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book = row;
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queries--;
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callback();
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}
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);
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// authors
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authors = new Array();
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req.db.each('SELECT authors.id as id,name FROM authors, books_authors_link WHERE books_authors_link.author = authors.id AND books_authors_link.book = ?', req.params.id,
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function(err, author) {
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authors.push(author);
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},
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function(err) {
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if (err) console.log('ERR authors: '+err);
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queries--;
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callback();
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}
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);
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// tags
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tags = new Array();
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req.db.each('SELECT tags.id as id,name FROM tags, books_tags_link WHERE books_tags_link.tag = tags.id AND books_tags_link.book = ?', req.params.id,
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function(err, tag) {
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tags.push(tag);
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},
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function(err) {
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if (err) console.log('ERR tags: '+err);
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queries--;
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callback();
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}
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);
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});
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module.exports = router;
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