/**
* Validates the given participant.
*
* @param \wcf\data\user\UserProfile $user
* @param string $field
*/
public static function validateParticipant(UserProfile $user, $field = 'participants')
{
// check participant's settings and permissions
if (!$user->getPermission('user.conversation.canUseConversation')) {
throw new UserInputException($field, 'canNotUseConversation');
}
if (!WCF::getSession()->getPermission('user.profile.cannotBeIgnored')) {
// check if user wants to receive any conversations
if ($user->canSendConversation == 2) {
throw new UserInputException($field, 'doesNotAcceptConversation');
}
// check if user only wants to receive conversations by
// users they are following and if the active user is followed
// by the relevant user
if ($user->canSendConversation == 1 && !$user->isFollowing(WCF::getUser()->userID)) {
throw new UserInputException($field, 'doesNotAcceptConversation');
}
// active user is ignored by participant
if ($user->isIgnoredUser(WCF::getUser()->userID)) {
throw new UserInputException($field, 'ignoresYou');
}
// check participant's mailbox quota
if (ConversationHandler::getInstance()->getConversationCount($user->userID) >= $user->getPermission('user.conversation.maxConversations')) {
throw new UserInputException($field, 'mailboxIsFull');
}
}
}
