boot.php

<?php

if (!rex::isBackend() && rex_get('replace_vars', 'boolean', false)) {
    // Web frontend
    $user_email = rex_get('email', 'string');
    if('' === $user_email) {
        if(FriendsOfRedaxo\MultiNewsletter\User::initByMail($user_email) instanceof FriendsOfRedaxo\MultiNewsletter\User) {
            rex_extension::register('OUTPUT_FILTER', static function (rex_extension_point $ep) {
                $user_email = rex_get('email', 'string');
                $multinewsletter_user = FriendsOfRedaxo\MultiNewsletter\User::initByMail($user_email);
                if($multinewsletter_user instanceof FriendsOfRedaxo\MultiNewsletter\User) {
                    return FriendsOfRedaxo\MultiNewsletter\Newsletter::replaceVars((string) $ep->getSubject(), $multinewsletter_user, rex_article::getCurrent());
                }
                else {
                    return $ep->getSubject();
                }
            });
        }
    }
} elseif (rex::isBackend() && rex::getUser() instanceof rex_user) {
    $multinewsletter = rex_addon::get('multinewsletter');
    rex_view::addJsFile($multinewsletter->getAssetsUrl('multinewsletter.js'));
    rex_view::addCssFile($multinewsletter->getAssetsUrl('general.css'));
    rex_perm::register('multinewsletter[]', rex_i18n::msg('multinewsletter_addon_short_title'));

    if ('multinewsletter/user' === rex_get('page', 'string')) {
        rex_extension::register('REX_FORM_SAVED', static function ($ep) {

            if (FriendsOfRedaxo\MultiNewsletter\Mailchimp::isActive()) {
                $user_id = rex_get('entry_id', 'int');
                $user = new FriendsOfRedaxo\MultiNewsletter\User($user_id);
                $user->save();
            }
            return $ep->getSubject();
        });
    }

    /**
     * Deletes language specific configurations and objects.
     * @param rex_extension_point<string> $ep Redaxo extension point
     * @return array<string> Warning message as array
     */
    rex_extension::register('CLANG_DELETED', static function (rex_extension_point $ep) {
        $warning = $ep->getSubject();
        $params = $ep->getParams();
        $clang_id = (int) $params['id'];

        // Update users
        $sql = rex_sql::factory();
        $sql->setTable(rex::getTablePrefix() . '375_user');
        $sql->setValue('clang_id', rex_clang::getStartId());
        $sql->setWhere('clang_id = :clang_id', ['clang_id' => $clang_id]);
        $sql->update();

        // Delete Archives
        $sql = rex_sql::factory();
        $sql->setTable(rex::getTablePrefix() . '375_archive');
        $sql->setWhere('clang_id = :clang_id', ['clang_id' => $clang_id]);
        $sql->delete();

        // Delete language settings
        if ((int) rex_config::get('multinewsletter', 'default_test_sprache') === $clang_id) {
            rex_config::set('multinewsletter', 'default_test_sprache', rex_clang::getStartId());
        }
        return $warning;
    });

    rex_extension::register('REX_YFORM_SAVED', static function ($ep) {
        $sql = $ep->getSubject();

        if (!($sql instanceof Exception)) {
            $action = $ep->getParam('action');

            if ($ep->getParam('table') === rex::getTablePrefix() . '375_user') {
                $user = new FriendsOfRedaxo\MultiNewsletter\User((int) $ep->getParam('id'));

                if ('update' !== $action) {
                    $user->subscriptiontype = 'backend';
                }
                $user->save();
            }
        }
        return $sql;
    });

    /**
     * Checks if article is used by this addon.
     * @param rex_extension_point<string> $ep Redaxo extension point
     * @throws rex_api_exception If article is used
     * @return string Warning message as array
     */
    rex_extension::register('ART_PRE_DELETED', static function ($ep) {
        $warning = [];
        $params = $ep->getParams();
        $article_id = $params['id'];

        // Groups
        $sql_groups = \rex_sql::factory();
        $sql_groups->setQuery('SELECT id, name FROM `' . \rex::getTablePrefix() . '375_group` '
            .'WHERE default_article_id = '. $article_id .' '
            .'GROUP BY id');

        // Prepare warnings
        // Groups
        for ($i = 0; $i < $sql_groups->getRows(); ++$i) {
            $message = '<a href="javascript:openPage(\'index.php?page=multinewsletter/groups&func=edit&entry_id='.
                $sql_groups->getValue('id') .'\')">'. rex_i18n::msg('multinewsletter_addon_short_title') .' - '. rex_i18n::msg('multinewsletter_menu_groups') .': '. $sql_groups->getValue('name') .'</a>';
            if (!in_array($message, $warning, true)) {
                $warning[] = $message;
            }
        }

        // Settings
        $addon = rex_addon::get('multinewsletter');
        if ($addon->hasConfig('default_test_article') && (int) $addon->getConfig('default_test_article') === $article_id) {
            $message = '<a href="index.php?page=multinewsletter/settings">'.
                 rex_i18n::msg('multinewsletter_addon_short_title') .' - '. rex_i18n::msg('multinewsletter_menu_config') . '</a>';
            if (!in_array($message, $warning, true)) {
                $warning[] = $message;
            }
        }

        if (count($warning) > 0) {
            throw new rex_api_exception(rex_i18n::msg('d2u_helper_rex_article_cannot_delete').'<ul><li>'. implode('</li><li>', $warning) .'</li></ul>');
        }

        return '';

    });
}