class UserTokensHooks

class UserTokensHooks {
    
    /**
     * Implements hook_token_info().
     */
    public function tokenInfo() {
        $types['user'] = [
            'name' => t('Users'),
            'description' => t('Tokens related to individual user accounts.'),
            'needs-data' => 'user',
        ];
        $types['current-user'] = [
            'name' => t('Current user'),
            'description' => t('Tokens related to the currently logged in user.'),
            'type' => 'user',
        ];
        $user['uid'] = [
            'name' => t('User ID'),
            'description' => t("The unique ID of the user account."),
        ];
        $user['uuid'] = [
            'name' => t('UUID'),
            'description' => t("The UUID of the user account."),
        ];
        $user['name'] = [
            'name' => t("Deprecated: User Name"),
            'description' => t("Deprecated: Use account-name or display-name instead."),
        ];
        $user['account-name'] = [
            'name' => t("Account Name"),
            'description' => t("The login name of the user account."),
        ];
        $user['display-name'] = [
            'name' => t("Display Name"),
            'description' => t("The display name of the user account."),
        ];
        $user['mail'] = [
            'name' => t("Email"),
            'description' => t("The email address of the user account."),
        ];
        $user['url'] = [
            'name' => t("URL"),
            'description' => t("The URL of the account profile page."),
        ];
        $user['edit-url'] = [
            'name' => t("Edit URL"),
            'description' => t("The URL of the account edit page."),
        ];
        $user['last-login'] = [
            'name' => t("Last login"),
            'description' => t("The date the user last logged in to the site."),
            'type' => 'date',
        ];
        $user['created'] = [
            'name' => t("Created"),
            'description' => t("The date the user account was created."),
            'type' => 'date',
        ];
        return [
            'types' => $types,
            'tokens' => [
                'user' => $user,
            ],
        ];
    }
    
    /**
     * Implements hook_tokens().
     */
    public function tokens($type, $tokens, array $data, array $options, BubbleableMetadata $bubbleable_metadata) {
        $token_service = \Drupal::token();
        $url_options = [
            'absolute' => TRUE,
        ];
        if (isset($options['langcode'])) {
            $url_options['language'] = \Drupal::languageManager()->getLanguage($options['langcode']);
            $langcode = $options['langcode'];
        }
        else {
            $langcode = NULL;
        }
        $replacements = [];
        if ($type == 'user' && !empty($data['user'])) {
            
            /** @var \Drupal\user\UserInterface $account */
            $account = $data['user'];
            foreach ($tokens as $name => $original) {
                switch ($name) {
                    // Basic user account information.
                    case 'uid':
                        // In the case of hook user_presave uid is not set yet.
                        $replacements[$original] = $account->id() ?: t('not yet assigned');
                        break;
                    case 'uuid':
                        $replacements[$original] = $account->uuid();
                        break;
                    case 'display-name':
                        $replacements[$original] = $account->getDisplayName();
                        if ($account->isAnonymous()) {
                            $bubbleable_metadata->addCacheableDependency(\Drupal::config('user.settings'));
                        }
                        break;
                    case 'name':
                    case 'account-name':
                        $display_name = $account->getAccountName();
                        $replacements[$original] = $display_name;
                        if ($account->isAnonymous()) {
                            $bubbleable_metadata->addCacheableDependency(\Drupal::config('user.settings'));
                        }
                        break;
                    case 'mail':
                        $replacements[$original] = $account->getEmail();
                        break;
                    case 'url':
                        $replacements[$original] = $account->id() ? $account->toUrl('canonical', $url_options)
                            ->toString() : t('not yet assigned');
                        break;
                    case 'edit-url':
                        $replacements[$original] = $account->id() ? $account->toUrl('edit-form', $url_options)
                            ->toString() : t('not yet assigned');
                        break;
                    // These tokens are default variations on the chained tokens handled below.
                    case 'last-login':
                        $date_format = DateFormat::load('medium');
                        $bubbleable_metadata->addCacheableDependency($date_format);
                        $replacements[$original] = $account->getLastLoginTime() ? \Drupal::service('date.formatter')->format($account->getLastLoginTime(), 'medium', '', NULL, $langcode) : t('never');
                        break;
                    case 'created':
                        $date_format = DateFormat::load('medium');
                        $bubbleable_metadata->addCacheableDependency($date_format);
                        // In the case of user_presave the created date may not yet be set.
                        $replacements[$original] = $account->getCreatedTime() ? \Drupal::service('date.formatter')->format($account->getCreatedTime(), 'medium', '', NULL, $langcode) : t('not yet created');
                        break;
                }
            }
            if ($login_tokens = $token_service->findWithPrefix($tokens, 'last-login')) {
                $replacements += $token_service->generate('date', $login_tokens, [
                    'date' => $account->getLastLoginTime(),
                ], $options, $bubbleable_metadata);
            }
            if ($registered_tokens = $token_service->findWithPrefix($tokens, 'created')) {
                $replacements += $token_service->generate('date', $registered_tokens, [
                    'date' => $account->getCreatedTime(),
                ], $options, $bubbleable_metadata);
            }
        }
        if ($type == 'current-user') {
            $account = User::load(\Drupal::currentUser()->id());
            $bubbleable_metadata->addCacheContexts([
                'user',
            ]);
            $replacements += $token_service->generate('user', $tokens, [
                'user' => $account,
            ], $options, $bubbleable_metadata);
        }
        return $replacements;
    }

}