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/*******************************************************************************
* Copyright (c) 2017 Kumar Rishabh and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution, and is available at
* http://www.apache.org/licenses/LICENSE-2.0
*******************************************************************************/
var express = require('express');
var router = express.Router();
var async = require('async');
var renderer = function(res, err, results) {
//console.log(results);
//console.log(results.length);
if(results.length >= 1)
res.end(JSON.stringify(results));
else
res.end(JSON.stringify({}));
}
var get_tags = function(result, callback) {
db_pool.getConnection(function(err, connection) {
sql_query = 'select tag_name from tag where tag_id in (select tag_id from vnf_tags where vnf_id = ' + result['vnf_id'] + ') and is_vnf_name = 0 limit 5';
// TODO find why it works and not above
connection.query(sql_query, function (error, results, fields) {
//console.log(results);
connection.release();
if (error) {
result['tags'] = false;
//throw error;
} else {
result['tags'] = results;
}
callback(null, result);
});
});
}
var get_images = function(result, callback) {
db_pool.getConnection(function(err, connection) {
sql_query = 'select photo_url from photo where photo_id = ' + result['photo_id'];
// TODO find why it works here and not when declared outside the method
//console.log(sql_query);
connection.query(sql_query, function (error, results, fields) {
//console.log(results[0].photo_url);
//callback(null, result);
connection.release();
if (error) {
result['photo_url'] = false;
//throw error;
} else {
result['photo_url'] = results[0].photo_url;
}
callback(null, result);
});
});
}
var sql_data = function(tags, previous_elements, renderer, res) {
var tag_array = "\'" + tags.map(function (item) { return item; }).join("\',\'") + "\'";
console.log(tag_array);
var condition = '';
db_pool.getConnection(function(err, connection) {
sql_query = 'select tag_id from tag where tag_name in (' + tag_array + ')';
connection.query(sql_query, function (error, results, fields) {
console.log('tag_id');
console.log(results);
condition = 'SELECT * FROM vnf as v';
orig_condition = condition;
for (var i in results) {
condition += (i == 0) ? ' WHERE ' : ' AND ';
condition += 'v.vnf_id IN (SELECT vnf_id from vnf_tags where tag_id = ' + results[i]['tag_id'] + ')';
}
if (condition === orig_condition)
condition += ' WHERE v.vnf_id = -1'
condition += ' limit ' + previous_elements.toString() + ', 5';
console.log(condition);
connection.query(condition, function (error, results, fields) {
//console.log(results);
connection.release();
if (error) {
//throw error;
console.log('connection error occurred');
} else {
async.map(results, get_images, function(error, results) {
async.map(results, get_tags, renderer.bind(null, res));
});
}
});
//connection.release();
//if (error) throw error;
});
});
}
router.post('/', function(req, res) {
console.log(typeof(req.param('tags')));
var tags = req.param('tags');
var previous_elements = (parseInt(req.param('page')) - 1) * 5;
console.log(previous_elements);
if(tags) {
tags = tags.toLowerCase().split(/[ ,]+/);
console.log(tags);
sql_data(tags, previous_elements, renderer, res);
} else {
res.render('search_projects', { title: 'Express', json: false});
}
});
module.exports = router;
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