src/controllers/FileController.php
<?php namespace crocodicstudio\crudbooster\controllers;
use File;
use Image;
use Request;
use Response;
use Storage;
class FileController extends Controller
{
public function getPreview($one, $two = null, $three = null, $four = null, $five = null)
{
if ($two) {
$fullFilePath = 'uploads'.DIRECTORY_SEPARATOR.$one.DIRECTORY_SEPARATOR.$two;
$filename = $two;
if ($three) {
$fullFilePath = 'uploads'.DIRECTORY_SEPARATOR.$one.DIRECTORY_SEPARATOR.$two.DIRECTORY_SEPARATOR.$three;
$filename = $three;
if ($four) {
$fullFilePath = 'uploads'.DIRECTORY_SEPARATOR.$one.DIRECTORY_SEPARATOR.$two.DIRECTORY_SEPARATOR.$three.DIRECTORY_SEPARATOR.$four;
$filename = $four;
if ($five) {
$fullFilePath = 'uploads'.DIRECTORY_SEPARATOR.$one.DIRECTORY_SEPARATOR.$two.DIRECTORY_SEPARATOR.$three.DIRECTORY_SEPARATOR.$four.DIRECTORY_SEPARATOR.$five;
$filename = $five;
}
}
}
} else {
$fullFilePath = 'uploads'.DIRECTORY_SEPARATOR.$one;
$filename = $one;
}
$fullStoragePath = storage_path('app/'.$fullFilePath);
$lifetime = 31556926; // One year in seconds
if (! Storage::exists($fullFilePath)) {
abort(404);
}
$handler = new \Symfony\Component\HttpFoundation\File\File(storage_path('app/'.$fullFilePath));
$extension = strtolower(File::extension($fullStoragePath));
$images_ext = config('crudbooster.IMAGE_EXTENSIONS', 'jpg,png,gif,bmp');
$images_ext = explode(',', $images_ext);
$imageFileSize = 0;
if (in_array($extension, $images_ext)) {
$defaultThumbnail = config('crudbooster.DEFAULT_THUMBNAIL_WIDTH');
if ($defaultThumbnail != 0) {
$w = Request::get('w') ?: $defaultThumbnail;
$h = Request::get('h') ?: $w;
} else {
$w = Request::get('w');
$h = Request::get('h') ?: $w;
}
$imgRaw = Image::cache(function ($image) use ($fullStoragePath, $w, $h) {
$im = $image->make($fullStoragePath);
if ($w) {
if (! $h) {
$im->fit($w);
} else {
$im->fit($w, $h);
}
}
return $im;
});
$imageFileSize = mb_strlen($imgRaw, '8bit') ?: 0;
}
/**
* Prepare some header variables
*/
$file_time = $handler->getMTime(); // Get the last modified time for the file (Unix timestamp)
$header_content_type = $handler->getMimeType();
$header_content_length = ($imageFileSize) ?: $handler->getSize();
$header_etag = md5($file_time.$fullFilePath);
$header_last_modified = gmdate('r', $file_time);
$header_expires = gmdate('r', $file_time + $lifetime);
$headers = [
'Content-Disposition' => 'inline; filename="'.$filename.'"',
'Last-Modified' => $header_last_modified,
'Cache-Control' => 'must-revalidate',
'Expires' => $header_expires,
'Pragma' => 'public',
'Etag' => $header_etag,
];
/**
* Is the resource cached?
*/
$h1 = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) && $_SERVER['HTTP_IF_MODIFIED_SINCE'] == $header_last_modified;
$h2 = isset($_SERVER['HTTP_IF_NONE_MATCH']) && str_replace('"', '', stripslashes($_SERVER['HTTP_IF_NONE_MATCH'])) == $header_etag;
$headers = array_merge($headers, [
'Content-Type' => $header_content_type,
'Content-Length' => $header_content_length,
]);
if (in_array($extension, $images_ext)) {
if ($h1 || $h2) {
return Response::make('', 304, $headers); // File (image) is cached by the browser, so we don't have to send it again
} else {
return Response::make($imgRaw, 200, $headers);
}
} else {
if (Request::get('download')) {
return Response::download(storage_path('app/'.$fullFilePath), $filename, $headers);
} else {
return Response::file(storage_path('app/'.$fullFilePath), $headers);
}
}
}
}