USOS timetable block time calculator

README.md

USOS timetable block time calculator [Userscript]

A script that adds time of block next to it's start / end times in the timetable.

Instructions

1. Install a Userscript browser extension

• Tampermonkey (I use this one)
• Violentmonkey
• etc.

*It should work fine with most extensions (if not, write a comment)
2. Add the script

Tampermonkey

1. Click on the extension icon (in the top right corner of the browser - you may have to click the puzzle icon first to see it)
2. Click Control panel
3. Click Utilities
4. At the bottom in to Import from URL paste in this URL: https://gist.githubusercontent.com/ErykDarnowski/470bbbb14f6beb8de1b2c8ec18b9c906/raw/3f58dbf12dcf9e7caa42161f782c8d939eba52fe/script.js
5. Click Install
6. Click Install again

Violentmonkey

1. Click on the extension icon (in the top right corner of the browser - you may have to click the puzzle icon first to see it)
2. Click the cog icon
3. Click +
4. Click Install from URL
5. Paste in this URL: <>
6. Click Confirm
7. Click Close

*The script should auto update!
*Remember, you can turn the script ON / OFF whenever you like by just flipping the switch next to it's name

script.js

// ==UserScript==
// @name         USOS timetable block time calculator
// @description  A script that adds time of block next to it's start / end times in the timetable.
// @version      1.0.1
// @author       Eryk Darnowski (GH: ErykDarnowski TW: @erykdarnowski)
// @match        *://usosweb.ansb.pl/kontroler.php?_action=home/plan*
// @match        *://usosweb.ansb.pl/kontroler.php?_action=katalog2/przedmioty/*
// @match        *://usosweb.ansb.pl/kontroler.php?_action=katalog2%2Fprzedmioty*
// @run-at       document-idle
// @grant        none
// @namespace    https://gist.github.com/ErykDarnowski/280ec2bedbeed7a19325e7627838b851
// @supportURL   https://gist.github.com/ErykDarnowski/280ec2bedbeed7a19325e7627838b851
// @updateURL    https://gist.githubusercontent.com/ErykDarnowski/280ec2bedbeed7a19325e7627838b851/raw/a0d99c943e319aca41c9c352f58a9aa0db5f9cf5/script.js
// @downloadURL  https://gist.githubusercontent.com/ErykDarnowski/280ec2bedbeed7a19325e7627838b851/raw/a0d99c943e319aca41c9c352f58a9aa0db5f9cf5/script.js
// ==/UserScript==

/* Releases
- 1.0.0 Initial
- 1.0.1 Add `use strict`
*/

(() => {
	"use strict";

	const elArr = [...document.querySelectorAll("table > tbody > tr > td > span")];

	const timeStrToMins = (timeStr) => {
		let hours, minutes;
		[hours, minutes] = timeStr.split(':');
		return +hours * 60 + +minutes;
	};

	elArr.map(x => {
		const timeStr = x.textContent;
		if (timeStr.includes('-')) {
			const timeStrArr = timeStr.split(', ')[0].split('-');
			const mins = timeStrToMins(timeStrArr[1]) - timeStrToMins(timeStrArr[0]);

			x.innerHTML = x.textContent.replace(", ", ` <span style="font-weight: 900; color: darkviolet;">(${new Date(mins * 60 * 1000).toISOString().substr(12, 4)})</span>, `);
		}
	});
})();