<?php

/**
 * @file
 * Exposes global functionality for video.js fields.
 */

use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\file\Entity\File;
use Drupal\field\FieldStorageConfigInterface;
use Drupal\field\FieldConfigInterface;

/**
 * Implements hook_theme().
 */
function videojs_theme() {
  return array(
    'videojs' => array(
      'variables' => array('items' => NULL, 'player_attributes' => NULL)
    ),
  );
}

/**
 * Return the version of Video.js installed.
 *
 * @param $path
 *   The path to check for a Video.js installation. This can be a local path
 *   like sites/all/libraries/video-js or a remote path like
 *   http://mycdn.com/videojs. Do not add a trailing slash.
 *   Defaults to videojs_directory when using the local file path location
 *   or whatever location the Libraries API determines.
 *
 * @return
 *   The version found or NULL if no version found.
 */
function videojs_get_version($path = NULL) {
  $version = NULL;
  $config = \Drupal::config('videojs.settings');
  
  if (!isset($path)) {
    $path = $config->get('videojs_directory');
  };

  // When admins specify a protocol-relative URL, add http because file_get_contents doesn't understand it.
  if (strncmp('//', $path, 2) === 0) {
    $path = 'http:' . $path;
  }

  // Don't use file_exists() because it doesn't work with URLs.
  // Now admins can also refer to directories like http://mycdn.com/videojs.
  $contents = @file_get_contents($path . '/video.js', FALSE, NULL, 0, 400);
  if (!empty($contents)) {
    $matches = array();
    if (preg_match('/([\d.]{3,})/i', $contents, $matches)) {
      $version = $matches[1];
    }
  }
  return $version;
}