/**
* Get the singleton object
* @return BP_Members_With_Avatar_Helper object
*/
public static function get_instance()
{
if (!isset(self::$instance)) {
self::$instance = new self();
}
return self::$instance;
}
function get_game($seconds, $num_choices, $check_gravatars)
{
if (!is_user_logged_in()) {
return new WP_Error('user-not-logged-in', 'You must be logged in to play the Do You Know game!');
}
$game_start = get_user_meta(get_current_user_id(), '_dyk_game_start', true);
$current_user = get_user_meta(get_current_user_id(), '_dyk_current_user', true);
$answers = get_user_meta(get_current_user_id(), '_dyk_current_answers', true);
$result = get_user_meta(get_current_user_id(), '_dyk_current_result', true);
if ($result === '') {
$result = null;
} else {
$result = (bool) $result;
}
$action = 'dyk_game_' . $game_start;
// answer was submitted
if ('POST' === $_SERVER['REQUEST_METHOD'] && isset($_POST['_dyk_answer']) && is_null($result) && wp_verify_nonce($_REQUEST['_wpnonce'], $action)) {
$result = $answers[$_POST['_dyk_answer']] == $current_user ? '1' : '0';
add_user_meta(get_current_user_id(), '_dyk_current_result', $result, true);
$result = (bool) $result;
if ($result) {
do_action('dyk_correct_answer');
} else {
do_action('dyk_wrong_answer');
}
} else {
if (!$game_start || time() - $game_start > $seconds) {
$game_start = time();
$current_user = null;
$result = null;
// set current user
$current_user = BP_Members_With_Avatar_Helper::get_instance()->get_random_user_with_avatar(get_current_user_id(), $check_gravatars);
if (!$current_user) {
return new WP_Error('no-avatar', 'No other user with an avatar could be found! You need at least one user with an avatar apart from the currently logged in user.');
}
$current_user = $current_user->ID;
// set answers
$answers = BP_Members_With_Avatar_Helper::get_instance()->get_random_users($num_choices - 1, array(get_current_user_id(), $current_user));
// set random correct position
if (count($answers) < $num_choices - 1) {
return new WP_Error('not-enough-users', sprintf("Not enough users to play the game! You need at least %s users.", $num_choices + 1));
}
$correct = rand(0, $num_choices - 1);
array_splice($answers, $correct, 0, $current_user);
update_user_meta(get_current_user_id(), '_dyk_game_start', $game_start);
delete_user_meta(get_current_user_id(), '_dyk_current_result');
update_user_meta(get_current_user_id(), '_dyk_current_user', $current_user);
update_user_meta(get_current_user_id(), '_dyk_current_answers', $answers);
}
}
return array('start' => $game_start, 'user' => $current_user, 'answers' => $answers, 'result' => $result, 'next' => $seconds - (time() - $game_start));
}
