app.js

/**
 * Module dependencies.
 */
var express = require('express')
, jsdom = require('jsdom')
, request = require('request')
, url = require('url')
, querystring = require('querystring')
, feedparser = require('feedparser');

var app = express();

function getParameterByName(name, url)
{
  name = name.replace(/[\[]/, "\\\[").replace(/[\]]/, "\\\]");
  var regexS = "[\\?&]" + name + "=([^&#]*)";
  var regex = new RegExp(regexS);
  var results = regex.exec(url);
  if(results === null)
    return "";
  else
    return decodeURIComponent(results[1].replace(/\+/g, " "));
}

app.get('/', function (req, res){
    res.end('Hi!');
});

app.get('/search', function (req, res) {
    var searchQuery = req.query["query"];
    var searchType = req.query["queryType"];
    var accessCode = req.query["accessCode"];
    var pagination = req.query["page"];
    var scanStart = req.query["scanStart"]; //where the next page should start
    var alephCookie = req.query["alephCookie"];
    var uriBase = 'http://apps.appl.cuny.edu:83/F/';
    var whichLibrary = req.query["school"];
    var barcode = req.query["barcode"];

    console.log(req.searchQuery);
    if (searchType == 'All Fields' || accessCode || barcode){
        if (accessCode){
            var func = '?func=find-acc&acc_sequence=' + accessCode + '&local_base=' + (whichLibrary || 'Hunter');
        }
        else if (barcode){
            func = '?func=find-c&ccl_term=BAR%3D' + barcode;
        }
        else{
            func = '?func=find-e&adjacent=N&find_scan_code=FIND_WRD&request=' + searchQuery.replace(' ', '+') + '&Search=+Search+&local_base=' + (whichLibrary || 'Hunter');
        };
        if (pagination > 1 && alephCookie){
            uriBase = uriBase + (alephCookie);
            var page = 1 + (20 * (pagination - 1 ));
            func = '?func=short-jump&jump=' + page;
        }
        var options = {uri: uriBase + func};
        request(options, function(error, response, body) {
        //  debugger;
            if (error && response.statusCode !== 200) {
                console.log(error);
            }
            jsdom.env({
                html: body,
                scripts: [
                    'https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js'
                ]
                }, function (err, window) {
                // load jquery
                var $ = window.jQuery;

                var cookieTable = $('table')[2];
                var mine = $(cookieTable).find('td')[2];
                var cookieSource = $($(mine).find('form')).attr('action') || '/ ';
                var cookie = cookieSource.substr(cookieSource.lastIndexOf("/") + 1);

                var resultsTable = $('table')[4];
                var rows = $(resultsTable).children('tr');

                allBooks = [];

                rows.each(function (i, item) {
                    var image = $(item).children('td')[2];
                    $($(image).children('script')).remove();
                    //Get rid of follow-on requests
                    var imageSrc = $(image).find('img');
                    if ($(imageSrc).attr('src') == 'src') $(imageSrc).removeAttr('src');

                    var author = $(item).children('td')[3];

                    var title = $(item).children('td')[4];
                    $($(title).children('script')).remove();

                    var year = $(item).children('td')[5];
                    var resourceType = $(item).children('td')[6];

                    var holdingsAndLink = $(item).children('td')[7];
                    var holdingLibrary = $(holdingsAndLink).find('a');
                    var everyLibrary = [];
                    holdingLibrary.each(function (i, item) { //Getting all the different sublibraries that have an item
                        var newLink =  $(item).attr('href');
                        var holdUrlObj = url.parse(newLink, true);
                        var subLibrary = {
                            libraryCode : holdUrlObj.query['sub_library'],
                            docNumber : holdUrlObj.query['doc_number']
                        };
                        everyLibrary.push(subLibrary);
                    });
                    var link = $(holdingLibrary).attr('href');


                    allBooks[i] = {
                        "title": $(title).text().trim(),
                        "author": $(author).text().trim(),
                        "year": $(year).text().trim(),
                        "resourceType": $(resourceType).text().trim(),
                        "library": $(holdingLibrary).text().trim()
                        };
                        if (image !== undefined)
                            allBooks[i].thumbnail = $(imageSrc).attr('src');
                        if (whichLibrary != 'U-CUN01' && link !== undefined){
                            var urlObj = url.parse(link, true);
                            allBooks[i].docNumber = urlObj.query['doc_number'];
                            allBooks[i].libraryCode = urlObj.query['sub_library'];
                            // allBooks[i].url = link;
                        };
                        whichLibrary == 'U-CUN01' ? allBooks[i].holdingLibraries = everyLibrary : allBooks[i].holdingLibraries = undefined;

                });
                res.cookie('AlephSession', cookie, { maxAge: 900000, httpOnly: false});
                res.writeHead(200, {
                    'Content-Type': 'text/plain',
                    'Access-Control-Allow-Origin' : '*'
                });
                allBooks.shift();
                finalJSON = {
                    alephCookie: cookie,
                    allBooks: allBooks
                };
                res.end(JSON.stringify(finalJSON, null, 2));
            });
        });
    }
        else{
            if (scanStart){ //If we want the next page
                var func = '?func=scan&scan_start='+ scanStart +'&scan_code=TTL&scan_op=CONT';
            }else{
                var func = '?func=find-e&adjacent=N&find_scan_code=SCAN_'+ searchType +'&request=' + searchQuery + '&Search=+Search+&local_base=' + (whichLibrary || 'Hunter');
            }
            var options = {uri: uriBase + func};

            request(options, function(error, response, body) {
            //  debugger;
                console.log(options.uri);
                if (error && response.statusCode !== 200) {
                    console.log(error);
                }
                jsdom.env({
                    html: body,
                    scripts: [
                        'https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js'
                    ]
                }, function (err, window) {
                    // load jquery
                    var $ = window.jQuery;

                    var cookieTable = $('table')[2];
                    var mine = $(cookieTable).find('a')[1];
                    var theUrl = $(mine).attr('href');
                    // Getting the number for the next page
                    var nextScanStart = getParameterByName('scan_start', theUrl);

                    var resultsTable = $('table')[3];
                    var rows = $(resultsTable).children('tr');
                    allChoices = [];
                    rows.each(function (i, item) {
                        var callNumber = $(item).children('td')[0];
                        console.log($(callNumber).text());
                        var name = $(item).children('td')[1];
                        var link = $(name).find('a').attr('href');
                        allChoices[i] = {
                            callNumber: $(callNumber).text().trim(),
                            name: $(name).text().trim()
                        };
                        if (link !== undefined){
                                    var urlObj = url.parse(link, true);
                                    allChoices[i].docNumber = urlObj.query['doc_number'];
                                    allChoices[i].accessCode = urlObj.query['acc_sequence'];
                                    // allChoices[i].url = link;
                                }
                    });
                res.writeHead(200, {
                    'Content-Type': 'text/plain',
                    'Access-Control-Allow-Origin' : '*'
                });
                allChoices.shift();
                finalJSON = {
                    scanStart: nextScanStart,
                    allBooks: allChoices
                };
                res.end(JSON.stringify(finalJSON, null, 2));
            });
        });
    }
});

app.get('/marc', function (req, res){
    var docNumber = req.query["docNumber"];
    var verbose = req.query["verbose"];
    var uriBase = 'http://apps.appl.cuny.edu:83/F/';
    verbose == '1' ? format = '001' : format = '002'

    var options = {
        uri: uriBase + '?func=direct&doc_number=' + docNumber + '&format=' + format
    };
    request(options, function(error, response, body) {
    //  debugger;
        console.log(options.uri);
        if (error && response.statusCode !== 200) {
            console.log(error);
        }

        jsdom.env({
                html: body,
                scripts: [
                    'https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js'
                ]
            }, function (err, window) {
            // load jquery
            var $ = window.jQuery;
            $('img[src]').each(function(i,el){
                $(el).removeAttr('src');
            });

            var wholeMarc = {};

            var resultsTable = $('table')[4];
            console.log($(resultsTable).html());

            var rows = $(resultsTable).children('tr');
            rows.each(function (i, item) {
                var marcLabel = $(item).children('td')[0];
                var marcValue = $(item).children('td')[1];
                var name = $(marcLabel).text().trim();
                var value = $(marcValue).text().trim();
                wholeMarc[name] = value;
            });
            // allRecords.shift();
            res.writeHead(200, {
                'Content-Type': 'text/plain',
                'Access-Control-Allow-Origin' : '*'
            });
            // console.log(wholeMarc);
            res.end(JSON.stringify(wholeMarc, null, 2));
        });
    });
});

app.get('/details', function (req, res) {
    var docNumber = req.query["docNumber"];
    var library = req.query["library"];
    if (library == 'none' || library===undefined){
        var options = {
        uri: 'http://apps.appl.cuny.edu:83/F/?func=item-global&doc_library=CUN01&doc_number=' + docNumber
        };
    }
    else {
        var options = {
            uri: 'http://apps.appl.cuny.edu:83/F/?func=item-global&doc_library=CUN01&doc_number=' + docNumber + '&year=&volume=&sub_library=' + library
        };
    };
    request(options, function(error, response, body) {
    //  debugger;
        console.log(options.uri);
        if (error && response.statusCode !== 200) {
            console.log(error);
        }

        jsdom.env({
                html: body,
                scripts: [
                    'https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js'
                ]
            }, function (err, window) {
            // load jquery
            var $ = window.jQuery;
            $('img[src]').each(function(i,el){
                $(el).removeAttr('src');
            });

            var allRecords = [];

            var resultsTable = $('table')[7];
            var citation = $('table')[2];

            var rows = $(resultsTable).children('tr');
            rows.each(function (i, item) {

                var expLibrary = $(item).children('td')[1];
                var expLocation = $(item).children('td')[2];
                var callNumber = $(item).children('td')[3];
                var description = $(item).children('td')[4];
                var status = $(item).children('td')[5];
                var dueDate = $(item).children('td')[6];
                var dueHour = $(item).children('td')[7];
                // var requestUrl = 'http://apps.appl.cuny.edu:83/F/?func=title-request-form&bib_doc_number=' + docNumber;


                allRecords[i] = {
                    "citation": $(citation).html().trim(),
                    "library": $(expLibrary).html(),
                    "location": $(expLocation).html(),
                    "callNumber": $(callNumber).html(),
                    "description": $(description).html(),
                    "status": $(status).html(),
                    "dueDate": $(dueDate).html(),
                    "dueHour": $(dueHour).html(),
                    // "requestUrl": requestUrl,
                    "docNumber": docNumber
                };

                if (allRecords[i].location){
                    if (allRecords[i].location == 'WEB Resource' || allRecords[i].location.indexOf("WEB") != -1 ){
                        var newTable = $('table')[3];
                        var rows = $(newTable).children('tr');
                        rows.each(function (j,item){
                            var test = $(item).children('td')[1];
                            if ($(test).html().indexOf("Hunter") != -1 || $(test).html().indexOf("CUNY") != -1
                            || $(test).html().indexOf("for all") != -1 || $(test).html().indexOf("Free") != -1){
                                var href = $(test).find('a').attr('href');
                                if (href === undefined) {
                                    var nextRow = $(newTable).children('tr')[1];
                                    var nextTd = $(nextRow).children('td')[1];
                                    href = $(nextTd).find('a').attr('href');
                                }
                                var start = 'javascript.open_window('.length;
                                var linky = href.substring(start, href.length - 2);
                                var composed = '<a href='+ linky +'>Access online</a>';
                                allRecords[i].location = composed;
                            };
                        });
                    };
                };
            });
            allRecords.shift();
            res.writeHead(200, {
                'Content-Type': 'text/plain',
                'Access-Control-Allow-Origin' : '*'
            });
            // console.log(allRecords);
            res.end(JSON.stringify(allRecords, null, 2));
        });
    });
});


app.get('/feed', function (req, res) {
    var allNews = new Array();
    var news = feedparser.parseUrl('http://feeds2.feedburner.com/HunterCollegeLibrariesBlog')
        .on('article', function (article) {
            var paper = JSON.stringify(article)
            allNews.push(paper)
        })
        .on('complete', function callback (meta, articles){
            res.writeHead(200, {
                    'Content-Type': 'text/plain',
                    'Access-Control-Allow-Origin' : '*'
                });
            res.end(JSON.stringify(articles))
        });
});

app.get('/hours', function (req, res) {
    var options = {
        uri: 'http://library.hunter.cuny.edu/about/hours',
    };

    request(options, function(error, response, body) {
    //  debugger;
        console.log(options.uri)
        if (error && response.statusCode !== 200) {
            console.log(error);
        }

        jsdom.env({
                html: body,
                scripts: [
                    'https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js'
                ]
            }, function (err, window) {
                // load jquery
            var $ = window.jQuery;

            var hoursTable = $('table')[0];

            res.writeHead(200, {
                'Content-Type': 'text/plain',
                'Access-Control-Allow-Origin' : '*'
            });
            res.end($(hoursTable).html());
        });
    });
});

var port = process.env.PORT || 3002;
app.listen(port, '0.0.0.0');

console.log('Server running at http://127.0.0.1:' + (port || '3002'));