<?php

$markets = bing_get_markets();

// ---

function bing_get_markets() {
	/*
	$cont = curl_request("http://www.bing.com/account/worldwide");

	preg_match_all('@setmkt=(.*)&@smU', $cont, $m);

	$m[1][] = 'en-ww'; // Worldwide - Does contain the "ROW" wallpapers (Rest of World)

	return $m[1];
	*/
	$markets = array();
	$markets[] = 'en-ww'; // Worldwide - Does contain the "ROW" wallpapers (Rest of World). In bingdesktop.EXE it is called "Standard"
	$markets[] = 'en-US';
	$markets[] = 'en-GB';
	$markets[] = 'zh-CN';
	$markets[] = 'ja-JP';
	$markets[] = 'de-DE';
	$markets[] = 'fr-FR';
	$markets[] = 'en-CA';
	$markets[] = 'en-AU';
	$markets[] = 'pt-BR'; // not in bingdesktop.EXE file, reported by Carlos Rodrigues
	$markets[] = 'es-ES';
	$markets[] = 'es-MX';
	return $markets;
}

// ---

# TODO: warum alles doppelt? json und xml gleiche infos?
function bing_get_all_pictures() {
	$out = array();
	global $markets;
	foreach ($markets as &$market) {
		$a = bing_get_pictures($market);
		$out = array_merge($out, $a);
	}
	return $out;
}

function bing_get_pictures($market='en-ww') {
	$out = array();

	$rnd = rand();

	# idx=-1 allows to reveal the picture of tomorrow! Thanks to Carlos Rodrigues pointing this out.
	$url = "http://www.bing.com/HPImageArchive.aspx?format=js&idx=-1&n=100&video=1&nc=$rnd&mkt=$market"; // TODO: can it handle different markets?
	$ajax = curl_request($url, true);
	sleep(1);

	if (!$ajax) return [];

	$json = json_decode($ajax,true);
	$pics = [];
	foreach ($json['images'] as $img) {
		// Attention: "rf" seems to be something completely different!!
		// rf is "LaDigue_1920x1080.jpg" but image is actually chinese wall
		/*
		$url_components = parse_url($img['url']);
		parse_str($url_components['query'], $params);
		$friendlyName = 'http://www.bing.com/'.$params['rf'];
		*/

		$tmp = str_replace('/th?id=OHR.', '', $img['url']);
		$tmp = explode('&', $tmp)[0];
		$friendlyName = $tmp;

		$pics['https://www.bing.com'.$img['url']] = $friendlyName;
	}

	return $pics;
}

// ---

/*
function bing_get_pictures($market='en-ww', $format=4) {
	$out = array();

	# idx=-1 allows to reveal the picture of tomorrow! Thanks to Carlos Rodrigues pointing this out.
	sleep(60);
	$url = "http://www.bing.com/hpimagearchive.aspx?format=xml&idx=-1&n=100&mbl=1&mkt=$market&video=1";
	$xml = curl_request($url); // TODO: funktioniert das mit den VIDEOS auch?
	sleep(1);
	$images = @simplexml_load_string($xml);

	if (!$images) {
		echo "bing_get_pictures(): No valid XML given by $url\n";
		return [];
	}

	foreach ($images->image as $x) {
		$urlBase = $x->urlBase;

		$web_file   = "http://www.bing.com{$urlBase}_1366x768.jpg";     // Web Resolution (without Logo)
		$bg_file    = "http://www.bing.com{$urlBase}_1920x1200.jpg";    // Wallpaper Format
		$bg_cn_file = "http://www.bing.com{$urlBase}_ZH_1920x1200.jpg"; // Wallpaper Format for China

		if ($format == 0) {
			$out[] = $web_file;
		} elseif ($format == 1) {
			$out[] = $bg_file;
		} elseif ($format == 2) {
			$out[] = $bg_cn_file;
		} elseif ($format == 3) {
			$out[] = $web_file;
			$out[] = $bg_file;
			$out[] = $bg_cn_file;
		} elseif ($format == 4) {
			# TODO: find available resolutions in another way?
			$bla = file(__DIR__ . '/test_resolution/output');
			foreach ($bla as &$bla_x) {
				$bla_x = trim($bla_x);
				if ($bla_x == '') continue;
				if ($bla_x[0] == '#') continue;

				$out[] = "http://www.bing.com{$urlBase}_{$bla_x}.jpg";
			}
		}
	}

	// DEBUG
	echo "bing_get_pictures($market, $format) = \n";
	print_r($out);

	return $out;
}
*/

# ---

function jpeg_is_ok($file) {
	$ext = strtolower(pathinfo($file, PATHINFO_EXTENSION));
	if (($ext == 'jpg') || ($ext == 'jpeg')) {
		# Only check if EOI is there
		$x = file_get_contents($file);
		$eoi = substr($x, -2);
		return ($eoi == chr(0xff).chr(0xd9));
	} else {
		// TODO: video files are not checked yet
	}
}

function curl_request($url, $fail = true) {
	$params  = '';

	$params .= "-s "; // silent
	$params .= "-S "; // but shows errors
	$params .= "-L "; // follow location
	$params .= "-k "; // allow all HTTPS connections, also untrusted ones
	$params .= "-A 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36' ";

	if ($fail) $params .= "-f ";

	$out = [];
	exec("curl $params ".escapeshellarg($url)." 2>/dev/null", $out, $code);
	if (trim(implode('',$out)) == 'OK') $code = 999;

	if ($code != 0) {
		// Bing seems to have blocked ViaThinkSoft Server!
		// lynx "https://www.bing.com/hpimagearchive.aspx?format=xml&idx=0&n=100&mbl=1&mkt=en-ww"
		// Outputs: "OK" instead of an XML file. But works for some TOR connections!
		//exec("vtor -- curl $params ".escapeshellarg($url)." 2>/dev/null", $out, $code);
		$url = 'http://marschall.my-router.de/proxy.php?url='.urlencode($url);;

		$out = [];
		exec("curl $params ".escapeshellarg($url)." 2>/dev/null", $out, $code);
		if (trim(implode('',$out)) == 'OK') $code = 999;
	}

	if (($fail) && ($code != 0)) return false;

	return implode("\n", $out);
}