Add email notification to all users on server domain pattern block list update

diff --git a/src/Moderation/DomainPatternBlocklist.php b/src/Moderation/DomainPatternBlocklist.php
index 33bd189d6d56fb6b595dc74d19c724abac153a14..c6063468793bca05ecbdd885366d4598681c1480 100644 (file)
--- a/src/Moderation/DomainPatternBlocklist.php
+++ b/src/Moderation/DomainPatternBlocklist.php
@@ -22,6 +22,7 @@
 namespace Friendica\Moderation;
 
 use Exception;
+use Friendica\App\BaseURL;
 use Friendica\Core\Config\Capability\IManageConfigValues;
 use Friendica\Core\L10n;
 use Friendica\Database\Database;
@@ -32,14 +33,28 @@ class DomainPatternBlocklist
 {
        const DEFAULT_REASON = 'blocked';
 
-       /**
-        * @var IManageConfigValues
-        */
+       /** @var IManageConfigValues */
        private $config;
 
-       public function __construct(IManageConfigValues $config)
+       /** @var Database */
+       private $db;
+
+       /** @var Emailer */
+       private $emailer;
+
+       /** @var L10n */
+       private $l10n;
+
+       /** @var BaseURL */
+       private $baseUrl;
+
+       public function __construct(IManageConfigValues $config, Database $db, Emailer $emailer, L10n $l10n, BaseURL $baseUrl)
        {
-               $this->config = $config;
+               $this->config  = $config;
+               $this->db      = $db;
+               $this->emailer = $emailer;
+               $this->l10n    = $l10n;
+               $this->baseUrl = $baseUrl;
        }
 
        public function get(): array
@@ -49,7 +64,12 @@ class DomainPatternBlocklist
 
        public function set(array $blocklist): bool
        {
-               return $this->config->set('system', 'blocklist', $blocklist);
+               $result = $this->config->set('system', 'blocklist', $blocklist);
+               if ($result) {
+                       $this->notifyAll();
+               }
+
+               return $result;
        }
 
        /**
@@ -177,4 +197,50 @@ class DomainPatternBlocklist
 
                return $blocklist;
        }
+
+       /**
+        * Sends a system email to all the node users about a change in the block list. Sends a single email to each unique
+        * email address among the valid users.
+        *
+        * @return int The number of recipients that were sent an email
+        * @throws HTTPException\InternalServerErrorException
+        * @throws HTTPException\UnprocessableEntityException
+        */
+       public function notifyAll(): int
+       {
+               // Gathering all non-system parent users who verified their email address and aren't blocked or about to be deleted
+               // We sort on language to minimize the number of actual language switches during the email build loop
+               $recipients = $this->db->selectToArray(
+                       'user',
+                       ['username', 'email', 'language'],
+                       ['`uid` > 0 AND `parent-uid` = 0 AND `verified` AND NOT `account_removed` AND NOT `account_expired` AND NOT `blocked`'],
+                       ['group_by' => ['email'], 'order' => ['language']]
+               );
+               if (!$recipients) {
+                       return 0;
+               }
+
+               foreach ($recipients as $recipient) {
+                       $this->l10n->withLang($recipient['language']);
+                       $email = $this->emailer->newSystemMail()
+                               ->withMessage(
+                                       $this->l10n->t('[%s] Notice of remote server domain pattern block list update', $this->emailer->getSiteEmailName()),
+                                       $this->l10n->t(
+                                               'Dear %s,
+
+You are receiving this email because the Friendica node at %s where you are registered as a user updated their remote server domain pattern block list.
+
+Please review the updated list at %s at your earliest convenience.',
+                                               $recipient['username'],
+                                               $this->baseUrl->get(),
+                                               $this->baseUrl . '/friendica'
+                                       )
+                               )
+                               ->withRecipient($recipient['email'])
+                               ->build();
+                       $this->emailer->send($email);
+               }
+
+               return count($recipients);
+       }
 }