maga-ivago.php

<?php
/**
 * Script to Make Afvalophalingskalender Great Again for Ivago (the municipal
 * waste management company for Ghent, Belgium):
 * - make events last all day (so they appear on top of the calendar on
 *   Google Calendar, for instance)
 * - do not use ALL CAPS for event summaries
 *
 * 1. Go to https://www.ivago.be/nl/particulier/afval/ophaling
 * 2. Download the ICS for your street.
 * 3. Run it through this script.
 */

$summaryReplacements = [
	'GLAS' => 'Glas',
	'PAPIER' => 'Papier & karton',
	'GROFVUIL' => 'Grofvuil (op afroep)',
	'RESTAFVAL' => 'Restafval',
	'KERSTBOMEN' => 'Kerstbomen',
];

if (empty($_SERVER['argv'][1])) {
	die("Specify the ICS file downloaded from https://www.ivago.be/nl/particulier/afval/ophaling" . PHP_EOL);
}

$inputFilename = $_SERVER['argv'][1];
$inputHandle = fopen($inputFilename, 'r') or die("Input file not found: $inputFilename" . PHP_EOL);

$outputFilename = basename($inputFilename, '.ics') . '-new.ics';
$outputHandle = fopen($outputFilename, 'wb') or die("Could not open output file: $outputFilename" . PHP_EOL);

while (($line = fgets($inputHandle))) {
	$line = trim($line);

	if (preg_match('/^DTSTART:(.*)/', $line, $matches)) {
		$date = new \DateTime($matches[1]);
		$date->setTimezone(new \DateTimeZone('Europe/Brussels'));
		$line = 'DTSTART:' . $date->add(new \DateInterval('PT7H'))->format('Ymd');
		// Use this if you want the events to start at 07:00 instead.
		//$date->setTimezone(new \DateTimeZone('UTC'));
		//$line = 'DTSTART:' . $date->add(new \DateInterval('PT7H'))->format('Ymd\THis\Z');
	} else if (preg_match('/^DTEND:/', $line)) {
		continue;
	} else if (preg_match('/^SUMMARY:(.*)/', $line, $matches)) {
		$summary = $matches[1];
		$summary = $summaryReplacements[$summary] ?? $summary;
		$line = "SUMMARY:$summary";
	}

	fputs($outputHandle, "$line\r\n");
}