From 600128bda0390f2051ad20ee42930f036c79323c Mon Sep 17 00:00:00 2001
From: Noah Loomans <noahloomans@gmail.com>
Date: Tue, 5 Sep 2017 20:28:32 +0200
Subject: Clear cache automaticly

---
 lib/getMeetingpointData.js | 91 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 lib/getMeetingpointData.js

(limited to 'lib/getMeetingpointData.js')

diff --git a/lib/getMeetingpointData.js b/lib/getMeetingpointData.js
new file mode 100644
index 0000000..fb4c6e4
--- /dev/null
+++ b/lib/getMeetingpointData.js
@@ -0,0 +1,91 @@
+'use strict'
+
+const Promise = require('bluebird')
+const cheerio = require('cheerio')
+const _ = require('lodash')
+const request = Promise.promisify(require('request'))
+
+let meetingpointData
+let lastUpdate
+
+function getUsers (page) {
+  const script = page('script').eq(1).text()
+
+  const regexs = [/var classes = \[(.+)\];/, /var teachers = \[(.+)\];/, /var rooms = \[(.+)\];/, /var students = \[(.+)\];/]
+  const items = regexs.map(function (regex) {
+    return script.match(regex)[1].split(',').map(function (item) {
+      return item.replace(/"/g, '')
+    })
+  })
+
+  return []
+  .concat(items[0].map(function (item, index) {
+    return {
+      type: 'c',
+      value: item,
+      index: index
+    }
+  }))
+  .concat(items[1].map(function (item, index) {
+    return {
+      type: 't',
+      value: item,
+      index: index
+    }
+  }))
+  .concat(items[2].map(function (item, index) {
+    return {
+      type: 'r',
+      value: item,
+      index: index
+    }
+  }))
+  .concat(items[3].map(function (item, index) {
+    return {
+      type: 's',
+      value: item,
+      index: index
+    }
+  }))
+}
+
+function getValidWeekNumbers(page) {
+  const weekSelector = page('select[name="week"]');
+  const weekNumbers = _.map(weekSelector.children(), option => parseInt(option.attribs.value))
+
+  return weekNumbers;
+}
+
+function requestData() {
+  lastUpdate = new Date()
+
+  return request(`http://www.meetingpointmco.nl/Roosters-AL/doc/dagroosters/frames/navbar.htm`).then((response) => {
+    const page = cheerio.load(response.body)
+    const users = getUsers(page)
+    const validWeekNumbers = getValidWeekNumbers(page)
+
+    meetingpointData = { users, validWeekNumbers }
+
+    return meetingpointData
+  })
+}
+
+function getMeetingpointData () {
+  if (lastUpdate == null) {
+    return requestData()
+  } else if (!meetingpointData) {
+    // The first request hasn't resolved yet, throw an error.
+    return Promise.reject()
+  } else if (new Date() - lastUpdate > 10 * 60 * 1000) { // 10 minutes
+    return requestData().catch(function () {
+      console.warn('Unable to update userIndex, using cached.')
+
+      return meetingpointData
+    })
+  }
+   else {
+    return Promise.resolve(meetingpointData)
+  }
+}
+
+module.exports = getMeetingpointData
-- 
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