show warning on personal settings page

Signed-off-by: Vitor Mattos <vitor@php.rio>

apps/settings/lib/Settings/Personal/PersonalInfo.php

@@ -52,6 +52,7 @@ use OCP\IUser;
 use OCP\IUserManager;
 use OCP\L10N\IFactory;
 use OC\Profile\ProfileManager;
+use OCP\Notification\IManager;
 use OCP\Settings\ISettings;
 
 class PersonalInfo implements ISettings {
@@ -84,6 +85,9 @@ class PersonalInfo implements ISettings {
 	/** @var IInitialState */
 	private $initialStateService;
 
+	/** @var IManager */
+	private $manager;
+
 	public function __construct(
 		IConfig $config,
 		IUserManager $userManager,
@@ -93,7 +97,8 @@ class PersonalInfo implements ISettings {
 		IAppManager $appManager,
 		IFactory $l10nFactory,
 		IL10N $l,
-		IInitialState $initialStateService
+		IInitialState $initialStateService,
+		IManager $manager
 	) {
 		$this->config = $config;
 		$this->userManager = $userManager;
@@ -104,6 +109,7 @@ class PersonalInfo implements ISettings {
 		$this->l10nFactory = $l10nFactory;
 		$this->l = $l;
 		$this->initialStateService = $initialStateService;
+		$this->manager = $manager;
 	}
 
 	public function getForm(): TemplateResponse {
@@ -160,6 +166,7 @@ class PersonalInfo implements ISettings {
 			'twitterScope' => $account->getProperty(IAccountManager::PROPERTY_TWITTER)->getScope(),
 			'twitterVerification' => $account->getProperty(IAccountManager::PROPERTY_TWITTER)->getVerified(),
 			'groups' => $this->getGroups($user),
+			'isFairUseOfFreePushService' => $this->isFairUseOfFreePushService()
 		] + $messageParameters + $languageParameters + $localeParameters;
 
 		$personalInfoParameters = [
@@ -190,6 +197,14 @@ class PersonalInfo implements ISettings {
 		return new TemplateResponse('settings', 'settings/personal/personal.info', $parameters, '');
 	}
 
+	/**
+	 * Check if is fair use of free push service
+	 * @return boolean
+	 */
+	private function isFairUseOfFreePushService(): bool {
+		return $this->manager->isFairUseOfFreePushService();
+	}
+
 	/**
 	 * returns the primary biography in an
 	 * associative array

apps/settings/templates/settings/personal/personal.info.php

@@ -35,6 +35,13 @@ script('settings', [
 	'vue-settings-personal-info',
 ]);
 ?>
+<?php if (!$_['isFairUseOfFreePushService']) : ?>
+	<div class="section">
+		<div class="warning">
+			<?php p($l->t('This community release of Nextcloud is unsupported and instant notifications are unavailable.')); ?>
+		</div>
+	</div>
+<?php endif; ?>
 
 <div id="personal-settings" data-federation-enabled="<?php p($_['federationEnabled'] ? 'true' : 'false') ?>"
 							data-lookup-server-upload-enabled="<?php p($_['lookupServerUploadEnabled'] ? 'true' : 'false') ?>">