95 lines
3 KiB
JavaScript
95 lines
3 KiB
JavaScript
//schedule.js
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var http = require('socks5-http-client');
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var cheerio = require('cheerio');
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var config = require('./configuration');
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var url = require('url');
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//Wrapper function that is being called by express.
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function schedule(req, res, next) {
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get(req.match.url, function (json) {
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req.match.json = json;
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next();
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});
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}
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//Function for getting the page via http.
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function get(url, callback) {
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var options = url.parse(url);
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options.socksPort = config().tor_port;
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options.socksHost = config().tor_host;
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console.log(options);
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http.get(options, function (res) {
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var _download = '';
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res.on('data', function (data) {
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_download += data;
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});
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res.on('end', function () {
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callback(to_json(_download));
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});
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});
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}
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function schedule_types(page) {
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var extract = cheerio('table tr td[valign="bottom"] table tr td b, table tr td[valign="bottom"] table tr td a', page).text().split(/\s\s/);
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var tab = 0;
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var types = [];
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for (element of extract) {
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element != '' ? types.push({
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'letter': element.substr(0, 1),
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'value' : element.match(/.*rooster|t\/m|\d\d\s\w{3}/g).join(' ').slice(1),
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'tab': tab++
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}) : null;
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}
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return types;
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}
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//Function for converting the page into a json dataset.
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function to_json(page) {
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var result = cheerio('td:nth-child(3) table', page);
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var types = schedule_types(page);
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var is_teacher = cheerio(cheerio(page).find('tr.CoreDark').find('td')[3]).find('a').html() == null;
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var amount_of_days = cheerio(result).find('tr.AccentDark').find('td').length - 1;
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var amount_of_hours = config().amount_of_hours;
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var schedule_data = [];
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var offset = is_teacher ? 5 : 6;
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//Looping for amount of days
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for (day = 0; day < amount_of_days; day++) {
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schedule_data[day] = [];
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//Looping for amount of hours
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for (hour = 0; hour < amount_of_hours; hour++) {
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var schedule = cheerio('tr:nth-child('+ (offset + hour) +')', result);
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//Looping for (optional) specialhours
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var amount_of_special_hours = schedule.find('table').eq(day).children().length;
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schedule_data[day][hour] = {teacher: [], chamber: [], course: [], changed: []};
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for (subhour = 0; subhour < amount_of_special_hours; subhour++) {
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var selected_hour = schedule.find('table').eq(day).find('tr').eq(subhour).find('td');
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//Give the value of the schedule hour to the fitting array.
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schedule_data[day][hour].teacher[subhour] = selected_hour.eq(0).text().replace(/\r|\n/g, '');
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schedule_data[day][hour].chamber[subhour] = selected_hour.eq(2).text();
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schedule_data[day][hour].course[subhour] = selected_hour.eq(4).text();
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//Check if the hour is 'changed' by the schedule authors, if so set to true.
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schedule_data[day][hour].changed[subhour] = selected_hour.eq(0).attr().class == 'tableCellNew' ? true : false;
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}
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}
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}
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schedule_data.types = types;
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return schedule_data;
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}
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//Exporting the schedule function.
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module.exports = schedule;
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