feat: ajout notification Discord en prod + mail priority HIGH pour le rapport DNS

src/Command/CheckDnsCommand.php:
- Injection de HttpClientInterface et kernel.environment dans le constructeur
- Constante DISCORD_WEBHOOK avec l'URL du webhook Discord
- sendReport(): appel sendEmail avec priority=1 (HIGH) pour que le mail
  soit marque comme urgent dans tous les clients mail
- sendDiscordNotification(): envoie un embed Discord avec:
  - Titre "Esy-Infra : ALERTE DNS" (rouge), "DNS avertissements" (jaune)
    ou "DNS Configuration OK" (vert)
  - Description avec le nombre de succes/erreurs/warnings
  - Les 5 premieres erreurs en citation markdown
  - Footer "Esy-Infra - Monitoring DNS" avec timestamp
- La notification Discord est envoyee UNIQUEMENT en environnement prod
  (condition sur kernel.environment == 'prod')

src/Service/MailerService.php:
- Ajout du parametre $priority (int, defaut 3 = normal) a sendEmail()
- Appel de ->priority($priority) sur l'objet Email Symfony
- Priority 1 = highest, 2 = high, 3 = normal, 4 = low, 5 = lowest

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/Command/CheckDnsCommand.php

@@ -12,6 +12,8 @@ use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Contracts\HttpClient\HttpClientInterface;
 use Twig\Environment;
 
 #[AsCommand(
@@ -28,6 +30,7 @@ class CheckDnsCommand extends Command
     ];
 
     private const MONITOR_EMAIL = 'monitor@siteconseil.fr';
+    private const DISCORD_WEBHOOK = 'https://discord.com/api/webhooks/1419573620602044518/ikAdxWxsrrTqMTb5Gh_8ylcoJHlOnq7aJZvR5udoS_fCK56Jk3qpEnJHVKdD8fwuNJF3';
 
     public function __construct(
         private DnsCheckService $dnsCheck,
@@ -36,6 +39,8 @@ class CheckDnsCommand extends Command
         private MailcowService $mailcow,
         private MailerService $mailer,
         private Environment $twig,
+        private HttpClientInterface $httpClient,
+        #[Autowire('%kernel.environment%')] private string $appEnv,
     ) {
         parent::__construct();
     }
@@ -394,6 +399,65 @@ class CheckDnsCommand extends Command
             null,
             null,
             false,
+            null,
+            1, // Priority HIGH
         );
+
+        // Notification Discord uniquement en prod
+        if ('prod' === $this->appEnv) {
+            $this->sendDiscordNotification($errors, $warnings, $successes);
+        }
+    }
+
+    /**
+     * @param list<string> $errors
+     * @param list<string> $warnings
+     * @param list<string> $successes
+     */
+    private function sendDiscordNotification(array $errors, array $warnings, array $successes): void
+    {
+        $hasErrors = [] !== $errors;
+        $hasWarnings = [] !== $warnings;
+
+        if ($hasErrors) {
+            $color = 0xDC2626; // rouge
+            $title = 'ALERTE DNS - '.\count($errors).' erreur(s)';
+        } elseif ($hasWarnings) {
+            $color = 0xF59E0B; // jaune
+            $title = 'DNS - '.\count($warnings).' avertissement(s)';
+        } else {
+            $color = 0x16A34A; // vert
+            $title = 'DNS - Configuration OK';
+        }
+
+        $description = "Domaines: **".implode(', ', self::DOMAINS)."**\n\n";
+        $description .= "**".\count($successes)."** verification(s) OK\n";
+        if ($hasErrors) {
+            $description .= "**".\count($errors)."** erreur(s)\n";
+            foreach (array_slice($errors, 0, 5) as $e) {
+                $description .= "> $e\n";
+            }
+            if (\count($errors) > 5) {
+                $description .= "> ... et ".(\count($errors) - 5)." autres\n";
+            }
+        }
+        if ($hasWarnings) {
+            $description .= "**".\count($warnings)."** avertissement(s)\n";
+        }
+
+        try {
+            $this->httpClient->request('POST', self::DISCORD_WEBHOOK, [
+                'json' => [
+                    'embeds' => [[
+                        'title' => 'Esy-Infra : '.$title,
+                        'description' => $description,
+                        'color' => $color,
+                        'footer' => ['text' => 'Esy-Infra - Monitoring DNS'],
+                        'timestamp' => (new \DateTimeImmutable())->format('c'),
+                    ]],
+                ],
+            ]);
+        } catch (\Throwable) {
+        }
     }
 }

src/Service/MailerService.php

@@ -58,7 +58,7 @@ class MailerService
     /**
      * @param array<array{path: string, name?: string}>|null $attachments
      */
-    public function sendEmail(string $to, string $subject, string $content, ?string $from = null, ?string $replyTo = null, bool $withUnsubscribe = true, ?array $attachments = null): void
+    public function sendEmail(string $to, string $subject, string $content, ?string $from = null, ?string $replyTo = null, bool $withUnsubscribe = true, ?array $attachments = null, int $priority = 3): void
     {
         $from ??= $this->getAdminFrom();
         $canUnsubscribe = $withUnsubscribe && !$this->isWhitelisted($to);
@@ -71,7 +71,8 @@ class MailerService
             ->from($from)
             ->to($to)
             ->subject($subject)
-            ->html($content);
+            ->html($content)
+            ->priority($priority);
 
         if ($replyTo) {
             $email->replyTo($replyTo);