From 4acd83630f04c0982d9b455206b67b4ebeaac2da Mon Sep 17 00:00:00 2001
From: Noah Loomans <noahloomans@gmail.com>
Date: Sun, 15 Apr 2018 16:49:30 +0200
Subject: Add .json endpoint for parsed schedule
---
src/server/lib/schools/hetmml/parseSchedule.js | 100 +++++++++++++++++++++++++
1 file changed, 100 insertions(+)
create mode 100644 src/server/lib/schools/hetmml/parseSchedule.js
(limited to 'src/server/lib/schools/hetmml')
diff --git a/src/server/lib/schools/hetmml/parseSchedule.js b/src/server/lib/schools/hetmml/parseSchedule.js
new file mode 100644
index 0000000..14e861e
--- /dev/null
+++ b/src/server/lib/schools/hetmml/parseSchedule.js
@@ -0,0 +1,100 @@
+const { JSDOM } = require('jsdom');
+
+function fixFirstLargeScheduleItem(trNodeList) {
+ return Array.from(trNodeList).some((trNode, timeOfDay) => {
+ const tdNodeList = trNode.children;
+
+ return Array.from(tdNodeList).some((tdNode, dayOfWeek) => {
+ const height = tdNode.rowSpan / 2;
+ if (height === 1) {
+ return false;
+ }
+
+ tdNode.rowSpan = 2; // eslint-disable-line no-param-reassign
+
+ for (let i = 1; i < height; i += 1) {
+ // Are we at the end of the table?
+ if (dayOfWeek === 4) {
+ // If so, we cannot use insertBefore, because the is no node to insert
+ // it before. Use appendChild instead.
+ trNodeList[timeOfDay + i].appendChild(tdNode.cloneNode(true));
+ } else {
+ trNodeList[timeOfDay + i]
+ .insertBefore(
+ tdNode.cloneNode(true),
+ trNodeList[timeOfDay + i].children[dayOfWeek],
+ );
+ }
+ }
+
+ return true;
+ });
+ });
+}
+
+function parseSchedule(axiosResponse) {
+ const dom = new JSDOM(axiosResponse.data);
+ const { window } = dom;
+ const { document } = window;
+
+ const tableNode = document.querySelector('center > table');
+ const tbodyNode = tableNode.querySelector('tbody');
+ const trNodeList = tbodyNode.children;
+
+ Array.from(trNodeList).forEach((trNode, timeOfDay) => {
+ const tdNodeList = trNode.children;
+
+ if (timeOfDay === 0 || trNode.children.length === 0) {
+ tbodyNode.removeChild(trNode);
+ return;
+ }
+
+ Array.from(tdNodeList).forEach((tdNode, dayOfWeek) => {
+ if (dayOfWeek === 0) {
+ trNode.removeChild(tdNode);
+ }
+ });
+ });
+
+ let shouldContinue = true;
+ while (shouldContinue) {
+ shouldContinue = fixFirstLargeScheduleItem(trNodeList);
+ }
+
+ const scheduleItems = [];
+
+ Array.from(trNodeList).forEach((trNode, timeOfDay) => {
+ const tdNodeList = trNode.children;
+ Array.from(tdNodeList).forEach((tdNode, dayOfWeek) => {
+ if (tdNode.textContent.trim() === '') {
+ return;
+ }
+
+ const childTableNode = tdNode.querySelector('table');
+ const childTrNodeList = childTableNode.querySelectorAll('tr');
+
+ Array.from(childTrNodeList).forEach((childTrNode) => {
+ const subject = childTrNode.children[0].textContent.trim();
+ const attendees = childTrNode.children[1]
+ ? childTrNode.children[1].textContent.trim()
+ : undefined;
+ const location = childTrNode.children[2]
+ ? childTrNode.children[2].textContent.trim()
+ : undefined;
+
+ scheduleItems.push({
+ startTime: timeOfDay,
+ endTime: timeOfDay + 1,
+ dayOfWeek,
+ subject,
+ attendees,
+ location,
+ });
+ });
+ });
+ });
+
+ return scheduleItems;
+}
+
+module.exports = parseSchedule;
--
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