Add summary with amount of updates

Signed-off-by: Tobia De Koninck <LEDfan@users.noreply.github.com>

apps/updatenotification/lib/Command/Check.php

@@ -62,10 +62,13 @@ class Check extends Command {
 	}
 
 	protected function execute(InputInterface $input, OutputInterface $output) {
+		$updatesAvailableCount = 0;
+
 		// Server
 		$r = $this->updateChecker->getUpdateState();
 		if (isset($r['updateAvailable']) && $r['updateAvailable']) {
 			$output->writeln($r['updateVersion'] . ' is available. Get more information on how to update at '. $r['updateLink'] . '.');
+			$updatesAvailableCount += 1;
 		}
 
 
@@ -75,9 +78,19 @@ class Check extends Command {
 			$update = $this->installer->isUpdateAvailable($app);
 			if ($update !== false) {
 				$output->writeln('Update for ' . $app . ' to version ' . $update . ' is available.');
+				$updatesAvailableCount += 1;
 			}
 		}
 
+		// Report summary
+		if ($updatesAvailableCount === 0) {
+			$output->writeln('<info>Everything up to date</info>');
+		} else if ($updatesAvailableCount === 1) {
+			$output->writeln('<comment>1 update available</comment>');
+		} else {
+			$output->writeln('<comment>' . $updatesAvailableCount . ' updates available</comment>');
+		}
+
 		return 0;
 	}
 }