1 files changed, 89 insertions, 0 deletions
diff --git a/src/sync/scrapeScheduleData.js b/src/sync/scrapeScheduleData.js
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+++ b/src/sync/scrapeScheduleData.js
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+/**
+ * Copyright (C) 2018 Noah Loomans
+ *
+ * This file is part of rooster.hetmml.nl.
+ *
+ * rooster.hetmml.nl is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * rooster.hetmml.nl is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with rooster.hetmml.nl.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+const cheerio = require('cheerio');
+const _ = require('lodash');
+
+/**
+ * Scrape all the valid users from a meetingpoint navbar.
+ * @param {string} html The html of a meetingpoint navbar.
+ * @returns {*}
+ * [
+ *   { type: 't', value: 'akh', index: 0 },
+ *   ...
+ *   { type: 's', value: '18561', index: 245 },
+ *   ...
+ *   { type: 'r', value: '008-mk', index: 2 },
+ *   ...
+ *   { type: 'c', value: '6-5H2', index: 23 },
+ *   ...
+ * ]
+ */
+function scrapeUsers(html) {
+  const page = cheerio.load(html);
+  const script = page('script').eq(1).text();
+
+  const regexs = [/var classes = \[(.+)\];/, /var teachers = \[(.+)\];/, /var rooms = \[(.+)\];/, /var students = \[(.+)\];/];
+  const items = regexs.map(regex => script.match(regex)[1].split(',').map(item => item.replace(/"/g, '')));
+
+  const classes = items[0].map((name, index) => ({
+    key: `c/${name}`,
+    type: 'class',
+    name,
+    index,
+  }));
+
+  const teachers = items[1].map((name, index) => ({
+    key: `t/${name}`,
+    type: 'teacher',
+    name,
+    index,
+  }));
+
+  const rooms = items[2].map((name, index) => ({
+    key: `r/${name}`,
+    type: 'room',
+    name,
+    index,
+  }));
+
+  const students = items[3].map((name, index) => ({
+    key: `s/${name}`,
+    type: 'student',
+    name,
+    index,
+  }));
+
+  return _.flatten([classes, teachers, rooms, students]);
+}
+
+/**
+ * scrape the alt text (the text next to the short code) from a
+ * specific meetingpoint schedule.
+ * @param {string} html The html of a specific meetingpoint schedule.
+ * @returns {string}
+ */
+function scrapeAltName(html) {
+  const page = cheerio.load(html);
+  return page('center > font').eq(2).text().trim() || undefined;
+}
+
+module.exports.scrapeUsers = scrapeUsers;
+module.exports.scrapeAltName = scrapeAltName;