HummingBirdAnimeClient/public/js.php

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<?php
/**
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* Hummingbird Anime Client
*
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* An API client for Hummingbird to manage anime and manga watch lists
*
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* @package HummingbirdAnimeClient
* @author Timothy J. Warren
* @copyright Copyright (c) 2015 - 2016
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* @link https://github.com/timw4mail/HummingBirdAnimeClient
* @license MIT
*/
// --------------------------------------------------------------------------
use GuzzleHttp\Client;
use GuzzleHttp\Psr7\Request;
//Get config files
require_once('../app/config/minify_config.php');
//Include the js groups
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$groups_file = '../app/config/minify_js_groups.php';
$groups = require_once($groups_file);
// Include guzzle
require_once('../vendor/autoload.php');
//The name of this file
$this_file = __FILE__;
// --------------------------------------------------------------------------
/**
* Get Files
*
* Concatenates the javascript files for the current
* group as a string
* @return string
*/
function get_files()
{
global $groups, $js_root;
$js = '';
foreach($groups[$_GET['g']] as $file)
{
$new_file = realpath($js_root.$file);
$js .= file_get_contents($new_file) . "\n\n";
}
return $js;
}
// --------------------------------------------------------------------------
/**
* Google Min
*
* Minifies javascript using google's closure compiler
* @param string $new_file
* @return string
*/
function google_min($new_file)
{
$options = [
'output_info' => 'errors',
'output_format' => 'json',
'compilation_level' => 'SIMPLE_OPTIMIZATIONS',
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//'compilation_level' => 'ADVANCED_OPTIMIZATIONS',
'js_code' => $new_file,
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'language' => 'ECMASCRIPT6_STRICT',
'language_out' => 'ECMASCRIPT5_STRICT'
];
// First check for errors
$error_client = new Client();
$error_res = $error_client->post('http://closure-compiler.appspot.com/compile', [
'headers' => [
'Accept-Encoding' => 'gzip',
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'Content-type' => 'application/x-www-form-urlencoded'
],
'form_params' => $options
]);
$error_json = $error_res->getBody();
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$error_obj = json_decode($error_json) ?: (object)[];
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// Show error if exists
if ( ! empty($error_obj->errors))
{
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$error_json = json_encode($error_obj, JSON_PRETTY_PRINT);
echo "console.error(${error_json});";
die();
}
// Now actually retrieve the compiled code
$options['output_info'] = 'compiled_code';
$client = new Client();
$res = $client->post('http://closure-compiler.appspot.com/compile', [
'headers' => [
'Accept-Encoding' => 'gzip',
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'Content-type' => 'application/x-www-form-urlencoded'
],
'form_params' => $options
]);
$json = $res->getBody();
$obj = json_decode($json);
return $obj->compiledCode;
}
// --------------------------------------------------------------------------
//Creative rewriting of /g/groupname to ?g=groupname
$pi = $_SERVER['PATH_INFO'];
$pia = explode('/', $pi);
$pia_len = count($pia);
$i = 1;
while($i < $pia_len)
{
$j = $i+1;
$j = (isset($pia[$j])) ? $j : $i;
$_GET[$pia[$i]] = $pia[$j];
$i = $j + 1;
};
// --------------------------------------------------------------------------
$js = '';
$modified = array();
// --------------------------------------------------------------------------
//Aggregate the last modified times of the files
if(isset($groups[$_GET['g']]))
{
if ( ! is_dir($js_root . 'cache'))
{
mkdir($js_root . 'cache');
}
$cache_file = $js_root.'cache/'.$_GET['g'];
foreach($groups[$_GET['g']] as $file)
{
$new_file = realpath($js_root.$file);
$modified[] = filemtime($new_file);
}
//Add this page too, as well as the groups file
$modified[] = filemtime($this_file);
$modified[] = filemtime($groups_file);
$cache_modified = 0;
//Add the cache file
if(is_file($cache_file))
{
$cache_modified = filemtime($cache_file);
}
}
else //Nothing to display? Just exit
{
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die('You must specify a group that exists');
}
// --------------------------------------------------------------------------
//Get the latest modified date
rsort($modified);
$last_modified = $modified[0];
$requested_time=(isset($_SERVER['HTTP_IF_MODIFIED_SINCE']))
? strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE'])
: time();
// If the browser's cached version is up to date,
// don't resend the file
if($last_modified === $requested_time)
{
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header('HTTP/1.1 304 Not Modified');
exit();
}
// --------------------------------------------------------------------------
//Determine what to do: rebuild cache, send files as is, or send cache.
// If debug is set, just concatenate
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if(array_key_exists('debug', $_GET))
{
$js = get_files();
}
else if($cache_modified < $last_modified)
{
$js = google_min(get_files());
//Make sure cache file gets created/updated
if(file_put_contents($cache_file, $js) === FALSE)
{
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die('Cache file was not created. Make sure you have the correct folder permissions.');
}
}
// Otherwise, send the cached file
else
{
$js = file_get_contents($cache_file);
}
// --------------------------------------------------------------------------
//This GZIPs the js for transmission to the user
//making file size smaller and transfer rate quicker
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ob_start('ob_gzhandler');
// Set important caching headers
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header('Content-Type: application/javascript; charset=utf8');
header('Cache-control: public, max-age=691200, must-revalidate');
header('Last-Modified: '.gmdate('D, d M Y H:i:s', $last_modified).' GMT');
header('Expires: '.gmdate('D, d M Y H:i:s', (filemtime($this_file) + 691200)).' GMT');
echo $js;
ob_end_flush();
//end of js.php