/**
* Anonymize user account by updating username to a random string
* and setting other user object fields (besides id) to their default values.
* User comments are preserved. Catalog accounts, due date reminders,
* saved searches and lists are deleted.
*
* @return boolean True on success
*/
public function anonymizeAccount()
{
$conn = $this->getDatabaseConnection();
$res = $conn->query("START TRANSACTION");
try {
// Delete catalog accounts
$account = new User_account();
$account->user_id = $this->id;
if ($account->find(false)) {
while ($account->fetch()) {
$account->delete();
}
}
// Delete due date reminders
$reminder = new Due_date_reminder();
$reminder->user_id = $this->id;
if ($reminder->find(false)) {
while ($reminder->fetch()) {
$reminder->delete();
}
}
// Delete lists (linked user_resource objects cascade)
$list = new User_list();
$list->user_id = $this->id;
if ($list->find(false)) {
while ($list->fetch()) {
$list->delete();
}
}
// Delete saved searches
$search = new SearchEntry();
$search->user_id = $this->id;
if ($search->find(false)) {
while ($search->fetch()) {
$search->delete();
}
}
// Anonymize user object
$this->username = '******' . uniqid();
$this->password = '';
$this->firstname = '';
$this->lastname = '';
$this->email = '';
$this->cat_username = '******';
$this->cat_password = '******';
$this->college = '';
$this->major = '';
$this->home_library = '';
$this->language = '';
$this->due_date_notification = 0;
$this->due_date_reminder = 0;
$this->authMethod = 'null';
$this->update();
} catch (Exception $e) {
$conn->query("ROLLBACK");
throw $e;
return false;
}
$conn->query("COMMIT");
return true;
}
