<?php
session_start();
$baseUrl = 'https://kyleavalani.com/red/';
$toOutput = '';
if (isset($_GET['sessionCookie'])) {
	$_SESSION['sessionCookie'] = $_GET['sessionCookie'];
}
else if (!isset($_SESSION['sessionCookie'])) {
	$_SESSION['sessionCookie'] = '';
	$toOutput = '<b>WARNING:</b> No sessionCookie has been set.<br>';
}
if (!isset($_GET['url']) || $_GET['url'] == '') {
        echo 'No URL.';
}
else {
	//Get base url
	$index = 0;
	if (substr($_GET['url'], 0, 4) == 'http') {
			$index = 2;
	}
	$basename = explode('/', $_GET['url'])[$index];

	//Set cookies
	$opts = array(
		'http'=>array(
		'method'=>"GET",
		'header'=>"Accept-language: en\r\n" .
				"Cookie: reddit_session=".$_SESSION['sessionCookie']
		)
	);
	$context = stream_context_create($opts);
	//Make request
	$page = file_get_contents($_GET['url'], false, $context);
	if ($basename == 'i.imgur.com') {
		// Output just the image
		header("Content-type: image/png");
	}
	else {
		//We only want to alter the <Body>
		$pageArr = explode('</head>', $page);
		//Set all links to my page
		$pageArr[1] = str_replace('href="', 'href="'.$baseUrl.'?url=', $pageArr[1]);
		if ($basename == 'reddit.com') {
			//Replace /r/ with my_page/r/
			$pageArr[1] = str_replace('?url=/r/', '?url=https://reddit.com/r/', $pageArr[1]);
		}
		$page = implode($pageArr);
	}
	echo $toOutput.$page;
}