<?php
	$infoUrl = "https://hplanning2019.umons.ac.be/Telechargements/ical/Edt__Bloc_compl__MA___Sc__informatiques.ics?version=2019.0.4.0&idICal=FD9359EA644C91D7986857F73C12D3AD&param=643d5b312e2e36325d2666683d3126663d3131303030";
	$copyInfoFile = dirname(__FILE__)."/copyInfo.ics";
	$restUrl = [];
	$restUrl[] = ["https://hplanning2019.umons.ac.be/Telechargements/ical/Edt_OptmLin.ics?version=2019.0.4.0&idICal=64759DF405E76003FE2D93D12CE75CD9&param=643d5b312e2e36325d2666683d3126663d31", "copyOpti.ics", "OptmLin"];
	$restUrl[] = ["https://hplanning2019.umons.ac.be/Telechargements/ical/Edt_GraphOptComb.ics?version=2019.0.4.0&idICal=424A11296D9F258CA2F7CDB93028AAEE&param=643d5b312e2e36325d2666683d3126663d31", "copyGraph.ics", "GraphOptComb"];

	// Download file from UMons
	$content = @file_get_contents($infoUrl, false, stream_context_create([
		'http' => [
			'timeout' => 10
		]
	]));
	if (!$content) {
		// Use copy file if cannot download from the server
		$content = file_get_contents($copyInfoFile);
	} else {
		// Save file
		file_put_contents($copyInfoFile, $content);
	}
	// Remove "END:VCALENDAR" from the string
	$content = substr($content, 0, strpos($content, "END:VCALENDAR"));
	echo $content;
	echo "\n";
	foreach ($restUrl as $item) {
		// Download file
		$download = @file_get_contents($item[0], false, stream_context_create([
			'http' => [
				'timeout' => 10
			]
		]));
		if (!$download) {
			// Use copy file if cannot download from the server
			$download = file_get_contents($item[1]);
		} else {
			// Save file
			file_put_contents($item[1], $download);
		}
		// Remove before first "BEGIN:VEVENT"
		$download = strstr($download, "BEGIN:VEVENT");
		$download = substr($download, 0, strpos($download, "END:VCALENDAR"));
		// print
		$split = explode("\n", $download);
		foreach($split as $line){
			if (substr($line, 0, 24) == "DESCRIPTION;LANGUAGE=fr:") {
				echo "DESCRIPTION;LANGUAGE=fr:Matière : ".$item[2]."\\n".substr($line, 24);
			} else if (substr($line, 0, 20) == "SUMMARY;LANGUAGE=fr:") {
				echo "SUMMARY;LANGUAGE=fr:".$item[2]." - ".substr($line, 20);
			} else
				echo $line."\n";
		}
		//echo $download;
		echo "\n";
	}
	echo "END:VCALENDAR";
?>