<?php

/**
 * @file
 * Primarily Drupal hooks.
 */

/**
 * Implementatation of hook_detect_mobile_device().
 */
function mt_browscap_detect_mobile_device() {
  // Assume that the site visitor is using a desktop browser until we can prove
  // otherwise
  $device_information = array(
    'type' => 'desktop',
    'group' => '',
  );

  // Get Browscap information about the current user agent
  #$user_agent = browscap_get_browser();
  
  // added tmp function for quick fix
function tmp_browscap_get_browser($user_agent = NULL) {
  // Determine the current user agent if a user agent was not specified
  if ($user_agent != NULL) {
    $user_agent = check_plain(trim($user_agent));
  }
  elseif ($user_agent == NULL && isset($_SERVER['HTTP_USER_AGENT'])) {
    $user_agent = check_plain(trim($_SERVER['HTTP_USER_AGENT']));
  }
  else {
    $user_agent = 'Default Browser';
  }

  // Check the cache for user agent data
  $cache = cache_get($user_agent, 'cache_browscap');

  // Attempt to find a cached user agent
  // Otherwise store the user agent data in the cache
  if (!empty($cache) && ($cache->created > time() - 60 * 60 * 24)) {
    $user_agent_properties = $cache->data;
  }
  else {
    // Find the user agent's properties
    // The useragent column contains the wildcarded pattern to match against our
    // full-length string while the ORDER BY chooses the most-specific matching
    // pattern
    $user_agent_properties = db_fetch_object(db_query_range("SELECT * from {browscap} WHERE '%s' LIKE useragent ORDER BY LENGTH(useragent) DESC", $user_agent, 0, 1));

    // Store user agent data in the cache
    cache_set($user_agent, $user_agent_properties, 'cache_browscap');
  }

  // Create an array to hold the user agent's properties
  $properties = array();

  // Return an array of user agent properties
  if (isset($user_agent_properties) && isset($user_agent_properties->data)) {
    // Unserialize the user agent data found in the cache or the database
    $properties = unserialize($user_agent_properties->data);

    // Set the user agent name and name pattern
    $properties['useragent'] = $user_agent;
    $properties['browser_name_pattern'] = strtr($user_agent_properties->useragent, '%_', '*?');
  }
  else {
    // Set the user agent name and name pattern to 'unrecognized'
    $properties['useragent'] = 'unrecognized';
    $properties['browser_name_pattern'] = strtr('unrecognized', '%_', '*?');
  }

  return $properties;
}

    // Get Browscap information about the current user agent
    // tmp fix function
  $user_agent = tmp_browscap_get_browser();


  // Check the browscap information to see if the current user agent is flagged
  // as a mobile device
  if (isset($user_agent['ismobiledevice']) && $user_agent['ismobiledevice'] == TRUE) {
    $device_information['type'] = 'mobile';
  }

  // Get the currently defined device groups
  $groups = mt_browscap_device_groups_info();

  // Check if the current user agent name can be found within the list of
  // device groups
  if (isset($user_agent['browser']) && in_array($user_agent['browser'], $groups)) {
    $device_information['group'] = array_search($user_agent['browser'], $groups);
  }

  return $device_information;
}

/**
 * Implementatation of hook_device_groups_info().
 */
function mt_browscap_device_groups_info() {
  return array(
    'android' => 'Android',
    'blackberry' => 'BlackBerry',
    'ipad' => 'iPad',
    'iphone' => 'iPhone',
    'ipod' => 'iPod',
    'opera_mini' => 'Opera Mini',
    'windows_phone' => 'Windows Phone',
  );
}