Revert "Remove class PreferencesCommand"

This reverts commit ea03ecd.

modules/migrate/application/clicommands/PreferencesCommand.php

@@ -0,0 +1,105 @@
+<?php
+/* Icinga Web 2 | (c) 2021 Icinga GmbH | GPLv2+ */
+
+namespace Icinga\Module\Migrate\Clicommands;
+
+use Icinga\Application\Config;
+use Icinga\Application\Logger;
+use Icinga\Cli\Command;
+use Icinga\Data\ConfigObject;
+use Icinga\Data\ResourceFactory;
+use Icinga\Exception\NotReadableError;
+use Icinga\Exception\NotWritableError;
+use Icinga\User;
+use Icinga\User\Preferences\Store\IniStore;
+use Icinga\User\Preferences\Store\DbStore;
+use Icinga\Util\DirectoryIterator;
+
+class PreferencesCommand extends Command
+{
+    /**
+     * Migrate local INI user preferences to a database
+     *
+     * USAGE
+     *
+     *  icingacli migrate preferences [options]
+     *
+     * OPTIONS:
+     *
+     *  --resource=<resource-name>  The resource to use, if no current database config backend is configured.
+     *  --no-set-config-backend     Do not set the given resource as config backend automatically
+     */
+    public function indexAction()
+    {
+        $resource = Config::app()->get('global', 'config_resource');
+        if (empty($resource)) {
+            $resource = $this->params->getRequired('resource');
+        }
+
+        $resourceConfig = ResourceFactory::getResourceConfig($resource);
+        if ($resourceConfig->db === 'mysql') {
+            $resourceConfig->charset = 'utf8mb4';
+        }
+
+        $connection = ResourceFactory::createResource($resourceConfig);
+
+        $preferencesPath = Config::resolvePath('preferences');
+        if (! file_exists($preferencesPath)) {
+            Logger::info('There are no local user preferences to migrate');
+            return;
+        }
+
+        $rc = 0;
+
+        $preferenceDirs = new DirectoryIterator($preferencesPath);
+        foreach ($preferenceDirs as $preferenceDir) {
+            if (! is_dir($preferenceDir)) {
+                continue;
+            }
+
+            $userName = basename($preferenceDir);
+
+            Logger::info('Migrating INI preferences for user "%s" to database...', $userName);
+
+            $iniStore = new IniStore(new ConfigObject(['location' => $preferencesPath]), new User($userName));
+            $dbStore = new DbStore(new ConfigObject(['connection' => $connection]), new User($userName));
+
+            try {
+                $dbStore->load();
+                $dbStore->save(new User\Preferences($iniStore->load()));
+            } catch (NotReadableError $e) {
+                if ($e->getPrevious() !== null) {
+                    Logger::error('%s: %s', $e->getMessage(), $e->getPrevious()->getMessage());
+                } else {
+                    Logger::error($e->getMessage());
+                }
+
+                $rc = 128;
+            } catch (NotWritableError $e) {
+                Logger::error('%s: %s', $e->getMessage(), $e->getPrevious()->getMessage());
+                $rc = 256;
+            }
+        }
+
+        if ($rc > 0) {
+            Logger::error('Failed to migrate some user preferences');
+            exit($rc);
+        }
+
+        if ($this->params->has('resource') && ! $this->params->has('no-set-config-backend')) {
+            $appConfig = Config::app();
+            $globalConfig = $appConfig->getSection('global');
+            $globalConfig['config_backend'] = 'db';
+            $globalConfig['config_resource'] = $resource;
+
+            try {
+                $appConfig->saveIni();
+            } catch (NotWritableError $e) {
+                Logger::error('Failed to update general configuration: %s', $e->getMessage());
+                exit(256);
+            }
+        }
+
+        Logger::info('Successfully migrated all local user preferences to database');
+    }
+}