<?php
/**
 * Copyright 2007 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
namespace google\appengine\runtime;

use org\bovigo\vfs\vfsStream;

/**
 * Handle direct file uploads by placing contents in virtual file system.
 *
 * The PHP runtime has been modified (in rfc1867.c) to place the file contents
 * in the 'contents' key of each $_FILES entry. The handle() method moves the
 * contents into a virtual file system accessed via stream wrapper (vfsStream)
 * and alters the tmp_name to point to vfs://.
 */
final class DirectUploadHandler {
  public static function handle() {
    // Initialize vfsStream wrapper with uploads directory.
    require_once 'third_party/vfsstream/vendor/autoload.php';
    vfsStream::setup('uploads');

    foreach ($_FILES as &$file) {
      if ($file['error'] == UPLOAD_ERR_OK && isset($file['contents'])) {
        // Example: tmp_name = vfs://uploads/1; name = 1.
        $name = ltrim(parse_url($file['tmp_name'], PHP_URL_PATH), '/');
        vfsStream::create([$name => $file['contents']]); // Does not copy.
      }
      unset($file['contents']);
    }
  }
}