[4][cli] schema update check

libraries/src/Application/ConsoleApplication.php

@@ -584,4 +584,52 @@ protected function getDefaultInputDefinition(): InputDefinition
             ]
         );
     }
+
+    /**
+     * Gets a user state.
+     *
+     * @param   string  $key      The path of the state.
+     * @param   mixed   $default  Optional default value, returned if the internal value is null.
+     *
+     * @return  mixed  The user state or null.
+     *
+     * @since   __DEPLOY_VERSION__
+     */
+    public function getUserState($key, $default = null)
+    {
+        $registry = $this->getSession()->get('registry');
+
+        if ($registry !== null) {
+            return $registry->get($key, $default);
+        }
+
+        return $default;
+    }
+
+    /**
+     * Gets the value of a user state variable.
+     *
+     * @param   string  $key      The key of the user state variable.
+     * @param   string  $request  The name of the variable passed in a request.
+     * @param   string  $default  The default value for the variable if not found. Optional.
+     * @param   string  $type     Filter for the variable, for valid values see {@link InputFilter::clean()}. Optional.
+     *
+     * @return  mixed  The request user state.
+     *
+     * @since   __DEPLOY_VERSION__
+     */
+    public function getUserStateFromRequest($key, $request, $default = null, $type = 'none')
+    {
+        $cur_state = $this->getUserState($key, $default);
+        $new_state = $this->input->get($request, null, $type);
+
+        if ($new_state === null) {
+            return $cur_state;
+        }
+
+        // Save the new value only if it was set in this request.
+        $this->setUserState($key, $new_state);
+
+        return $new_state;
+    }
 }

libraries/src/Console/UpdateCoreCommand.php

@@ -10,6 +10,7 @@
 namespace Joomla\CMS\Console;
 
 use Joomla\Application\Cli\CliInput;
+use Joomla\CMS\Extension\ExtensionHelper;
 use Joomla\CMS\Filesystem\File;
 use Joomla\CMS\Filesystem\Folder;
 use Joomla\CMS\Installer\InstallerHelper;
@@ -165,6 +166,19 @@ public function doExecute(InputInterface $input, OutputInterface $output): int
             return self::ERR_CHECKS_FAILED;
         }
 
+        $this->progressBar->advance();
+        $this->progressBar->setMessage('Check Database Table Structure...');
+
+        $errors = $this->checkSchema();
+
+        if ($errors > 0) {
+            $this->ioStyle->error('Database Table Structure not Up to Date');
+            $this->progressBar->finish();
+            $this->ioStyle->info('There were ' . $errors . ' errors');
+
+            return self::ERR_CHECKS_FAILED;
+        }
+
         $this->progressBar->advance();
         $this->progressBar->setMessage('Starting Joomla! update ...');
 
@@ -386,4 +400,32 @@ public function copyFileTo($file, $dir): void
     {
         Folder::copy($file, $dir, '', true);
     }
+
+    /**
+     * Check Database Table Structure
+     *
+     * @return  integer the number of errors
+     *
+     * @since __DEPLOY_VERSION__
+     */
+    public function checkSchema(): int
+    {
+        $app = $this->getApplication();
+        $app->getLanguage()->load('com_installer', JPATH_ADMINISTRATOR);
+        $coreExtensionInfo = ExtensionHelper::getExtensionRecord('joomla', 'file');
+
+        $dbmodel = $app->bootComponent('com_installer')->getMVCFactory($app)->createModel('Database', 'Administrator');
+
+        // Ensure we only get information for core
+        $dbmodel->setState('filter.extension_id', $coreExtensionInfo->extension_id);
+
+        // We're filtering by a single extension which must always exist - so can safely access this through element 0 of the array
+        $changeInformation = $dbmodel->getItems()[0];
+
+        foreach ($changeInformation['errorsMessage'] as $msg) {
+            $this->ioStyle->info($msg);
+        }
+
+        return $changeInformation['errorsCount'];
+    }
 }